The method for controlling the stirring within a vessel (22) of a steelmaking furnace (20), comprising a metal bath (1) comprising molten metal (3) and a layer of slag (5), the method (100) comprising: - measuring at least two parameters representative of the metal bath (1) contained within the vessel (22) during stirring; - detecting, based on the measurement of the at least two parameters, the formation of an open-eye (8) in the slag layer (5); - adapting the stirring based on the detection of the formation of an open-eye (8); wherein the at least two parameters comprise a visual parameter measured on images of the slag layer (5) captured during stirring and a mechanical parameter representative of mechanical waves generated within the vessel (22) during stirring.
Method for manufacturing a hot stamped part and hot stamped, wherein the hot stamped part is manufactured by hot stamping a steel sheet comprising C : 0.10 - 0.4 %, Mn : 1.0 – 11 %, Si : 0.2 – 2.0 %, Cr ≤ 2.0%, Mo ≤ 0.5 %, Nb ≤ 0.1 %, Al ≤ 0.10 %, Ti : 0.01 - 0.1 %, B : 0.0005 - 0.005 %, P ≤ 0.02 %, S ≤ 0.04 %, N ≤ 0.01 %, Ni ≤ 1.0%, Cu ≤ 1.0%, heating said steel sheet above Ac3, stamping said steel sheet above MS-start, the temperature at which martensite starts to form for said steel sheet, applying to said sheet a deformation, expressed in equivalent plastic strain, which does not exceed 1.0 and which locally at least is greater than or equal to 0.4.
A method to manufacture a press hardening part comprising the following steps: A) Providing a coated steel sheet (4), comprising a base steel for heat treatment (1), coated with an aluminium based metallic coating (2), B) Applying a surface treatment (3) on the coated steel sheet (4) with an aqueous solution to form a wet film having a thickness from 0.5 to 6.0 pm, said aqueous solution having a mass concentration in chromium from 1.0 to 30.0 g/L and a mass concentration in phosphorous from 0.8 to 26.0 g/L, C) Drying said wet film to obtain a treated coated steel sheet (5), D) Trimming or cutting said treated steel sheet (5) into a blank, E) Heating said blank in a furnace at a temperature set from 850 to 950°C, F) Transferring said hot blank into a press tool, G) Forming said hot blank into a part and press hardening said part into a press-hardened part.
C23C 22/07 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing phosphates
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
The method for controlling the stirring within a vessel (22) of a steelmaking furnace (20), comprising a metal bath (1) comprising molten metal (3) and a layer of slag (5), the method (100) comprising: - measuring at least two parameters representative of the metal bath (1) contained within the vessel (22) during stirring; - detecting, based on the measurement of the at least two parameters, the formation of an open-eye (8) in the slag layer (5); - adapting the stirring based on the detection of the formation of an open-eye (8); wherein the at least two parameters comprise a visual parameter measured on images of the slag layer (5) captured during stirring and a mechanical parameter representative of mechanical waves generated within the vessel (22) during stirring.
A device for heat transfer comprising: - a chamber including a fluidized bed of solid particles, the solid particles exchanging heat with a metal semi-product, the solid particles circulating along a circulation direction, - a gas injector to inject gas within the chamber, - a heat exchanger having a circulating transfer medium, the heat exchanger being in contact with the fluidized bed so that the solid particles exchange heat with the transfer medium, - means for gathering scale particles released from said metal semi-product into said chamber, - means for removing scale particles from said chamber. The invention also relates to a method of removing scale from a device for heat transfer related to the invention.
A method to manufacture a press hardening part comprising the following steps: A) Providing a coated steel sheet (4), comprising a base steel for heat treatment (1), coated with an aluminium based metallic coating (2), B) Applying a surface treatment (3) on the coated steel sheet (4) with an aqueous solution to form a wet film having a thickness from 0.5 to 6.0 µm, said aqueous solution having a mass concentration in chromium from 1.0 to 30.0 g/L and a mass concentration in phosphorous from 0.8 to 26.0 g/L, C) Drying said wet film to obtain a treated coated steel sheet (5), D) Trimming or cutting said treated steel sheet (5) into a blank, E) Heating said blank in a furnace at a temperature set from 850 to 950°C, F) Transferring said hot blank into a press tool, G) Forming said hot blank into a part and press hardening said part into a press-hardened part.
C23C 22/07 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing phosphates
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
8.
METHOD FOR MANUFACTURING A HOT STAMPED PART AND ASSOCIATED HOT STAMPED PART
Method for manufacturing a hot stamped part and hot stamped, wherein the hot stamped part is manufactured by hot stamping a steel sheet comprising C : 0.10 - 0.4 %, Mn : 1.0 – 11 %, Si : 0.2 – 2.0 %, Cr : 0.15% - 2.0%, Mo ≤ 0.5 %, Nb ≤ 0.1 %, Al ≤ 0.10 %, Ti : 0.01 - 0.1 %, B : 0.0005 - 0.005 %, P ≤ 0.02 %, S ≤ 0.04 %, N ≤ 0.01 %, Ni ≤ 1.0%, Cu ≤ 1.0%, heating said steel sheet above Ac3, stamping said steel sheet above MS-start, the temperature at which martensite starts to form for said steel sheet, applying to said sheet a deformation, expressed in equivalent plastic strain, which does not exceed 1.0 and which locally at least is greater than or equal to 0.4.
The invention relates to a taphole (14) for discharging a metallurgical vessel (12) of an electric arc furnace (10), the taphole (14) comprising a central conduit extending along a longitudinal axis (X) between a top end (32) opening into the vessel (12) and a bottom end (34) for discharging molten steel outside the vessel (12) into an enclosure (24), such as a ladle. The central conduit comprises successively an upstream portion and a downstream portion, and a throttle arranged between the upstream and the downstream portions. The throttle has a constricted cross-section compared to a cross-section of the upstream and downstream portions, so as to generate a Venturi effect when discharging the vessel (12) through the taphole (14).
F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
F27B 3/19 - Arrangement of devices for discharging
F27D 3/15 - Tapping equipmentEquipment for removing slag
F27D 3/16 - Introducing a fluid jet or current into the charge
11.
A TAPHOLE FOR DISCHARGING A METALLURGICAL VESSEL OF AN ELECTRIC ARC FURNACE AND ASSOCIATED FURNACE AND DISCHARGING METHOD
A taphole for discharging a metallurgical vessel of an electric arc furnace and associated furnace and discharging method The invention relates to a taphole (14) for discharging a metallurgical vessel (12) of an electric arc furnace (10), the taphole (14) comprising a central conduit extending along a longitudinal axis (X) between a top end (32) opening into the vessel (12) and a bottom end (34) for discharging molten steel outside the vessel (12) into an enclosure (24), such as a ladle. The central conduit comprises successively an upstream portion and a downstream portion, and a throttle arranged between the upstream and the downstream portions. The throttle has a constricted cross-section compared to a cross-section of the upstream and downstream portions, so as to generate a Venturi effect when discharging the vessel (12) through the taphole (14).
F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
F27B 3/19 - Arrangement of devices for discharging
F27D 3/15 - Tapping equipmentEquipment for removing slag
F27D 3/16 - Introducing a fluid jet or current into the charge
12.
STEEL PART HAVING HIGH STRENGTH AND HIGH BENDABILITY
Steel part having a chemical composition comprising, by weight %, 0.18 ≤ C ≤ 0.27, 0.18 ≤ Si ≤ 0.30, 1.0 ≤ Mn ≤ 1.5, 0.14 ≤ Cr ≤ 0.25, 0.02 ≤ Al ≤ 0.06, 0.02 ≤ Ti ≤ 0.06, 0.0020 ≤ B ≤ 0.0040, 0 ≤ S ≤ 0.008, 0.008 ≤ N ≤ 0.020, the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, having a microstructure comprising, in surface fraction, 95% or more of martensite, wherein the surface fraction of TiN particles in the skin portion is equal to or greater than 200*10-6 inclusions / mm² and the average equivalent diameter of said TiN particles in the skin portion is equal to or smaller than 2.0 microns.
A method for erecting a portion of a transportation structure including a first assembly of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including: (a) erecting a substructure including a first plurality of girders forming a first transportation pathway and a plurality of platforms forming a service pathway, the erecting step including conveying with vehicle(s) the girders and platforms along the first transportation pathway, positioning them and having the vehicle(s) return along the service pathway, (b) conveying, with vehicle(s), the tube segments along the first transportation pathway, positioning them and having the vehicle(s) return along the service pathway. A portion of a transportation structure is also provided.
2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending angle normalized to 1.5 mm and measured in the transverse direction strictly greater than 48°.
A portion of transportation structure including: 1) a substructure including a plurality of piers, a first plurality of girders positioned on at least some of the piers and forming a first transportation pathway, 2) a first assembly of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the first assembly of tube segments been positioned on the first transportation pathway and each tube segment comprising: a) a main tube with legs distributed along the length of the main tube and suitable for the main tube to rest on the substructure on its legs, b) shims positioned in-between the substructure and at least part of the legs, the thickness of each shim been adapted so that the deflection of the substructure between piers is offset.
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.15% ≤ Manganese ≤ 0.25%, 3.2% ≤ Silicon ≤ 3.8%, 0.7% ≤ Aluminum ≤ 1.3 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%,0.001% ≤ Nickel ≤ 0.01, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less than 33 % when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.630T to 1.65T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.05% ≤ Manganese ≤ 0.15%, 2.5% ≤ Silicon ≤ 3.1%, 0.26% ≤ Aluminum ≤ 0.7 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 35% to 45% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.15% ≤ Manganese ≤ 0.3%, 3.2% ≤ Silicon ≤ 3.8%, 0.8% ≤ Aluminum ≤ 1.1%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0.001% ≤ Nickel ≤ 0.01, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less than 30% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.66T to 1.69T.
C22C 38/16 - Ferrous alloys, e.g. steel alloys containing copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.15% ≤ Manganese ≤ 0.2%, 3% ≤ Silicon ≤ 3.6%, 0.7% ≤ Aluminum ≤ 1.3 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and eddy current loss in total iron loss of 35 to 55% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.635T to 1.670T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.005 %, 0.2% ≤ Manganese ≤ 0.3% 3.1% ≤ Silicon ≤ 3.6%, 0.6% ≤ Aluminum ≤ 1 % 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 % 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 30% to 35% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.09% ≤ Manganese ≤ 0.15%, 2.5% ≤ Silicon ≤ 3%, 0.1% ≤ Aluminum ≤ 0.5 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 35% to 45% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
Method of producing steel with using steel scrap in electric arc furnace The method of producing steel using an Electrical Arc Furnace (EAF) comprising successively loading a load (L) in the EAF, the load (L) containing steel scrap (SC), energizing the electrodes of the EAF for melting the load (L) and generating a melt (M); introducing a desulphurizing slagging agent in the EAF for generating a desulphurizing slag (S1) above the melt (M) and then removing the desulphurizing slag (S1) from the EAF, and injecting oxygen in the EAF for decarburizing the melt (M).
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.18% ≤ Manganese ≤ 0.5% 3.1% ≤ Silicon ≤ 3.8% 0.7% ≤ Aluminum ≤ 1.3 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin ≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 34 % when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.60T to 1.65T.
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.15% ≤ Manganese ≤ 0.25% 2.9% ≤ Silicon ≤ 3.4% 0.8% ≤ Aluminum ≤ 1.1 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006 % Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 25% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.625T to 1.690T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.2% ≤ Manganese ≤ 0.24% 3.1% ≤ Silicon ≤ 3.5% 0.8% ≤ Aluminum ≤ 1.1% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0.001% ≤ Nickel ≤ 0.01 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less from 30% to 35% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.645T to 1.660T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.05% ≤ Manganese ≤ 0.15% 2.5% ≤ Silicon ≤ 3.1% 0.26% ≤ Aluminum ≤ 0.7 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.17% ≤ Manganese ≤ 0.4% 3% ≤ Silicon ≤ 3.6% 0.7% ≤ Aluminum ≤ 1.3 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 25% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.15% ≤ Manganese ≤ 0.3% 3.2% ≤ Silicon ≤ 3.8% 0.8% ≤ Aluminum ≤ 1.1% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0.001% ≤ Nickel ≤ 0.01 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 30% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.66T to 1.69T.
C22C 38/16 - Ferrous alloys, e.g. steel alloys containing copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.30% ≤ Manganese ≤ 0.7% 3% ≤ Silicon ≤ 3.6% 0.4% ≤ Aluminum ≤ 0.8 % 0.05% ≤ Tin≤ 0.15% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 25% to 35% when calculated in accordance of Bertotti method.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.21% ≤ Manganese ≤ 0.7% 3% ≤ Silicon ≤ 3.6% 0.7% ≤ Aluminum ≤ 1.3 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.63T to 1.66T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.15% ≤ Manganese ≤ 0.25% 3.2% ≤ Silicon ≤ 3.8% 0.7% ≤ Aluminum ≤ 1.3 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006 % Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0.001% ≤ Nickel ≤ 0.01 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 33 % when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.630T to 1.65T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.1% ≤ Manganese ≤ 0.2% 3.1% ≤ Silicon ≤ 3.6% 0.8% ≤ Aluminum ≤ 1.1% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0.001% ≤ Nickel ≤ 0.01 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, is from 35% to 45% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.64T to 1.66T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
A method for erecting a portion of a transportation structure including a plurality of piers, a plurality of platforms forming a service pathway, a first plurality of girders forming a first assembly of tube segments and a first rooftop transportation pathway, a second plurality of girders forming a second assembly of tube segments and a second rooftop transportation pathway, both assemblies being capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including conveying with vehicle(s) the girders and platforms along the first and/or second rooftop transportation pathway, positioning them and having the vehicle(s) return along the service pathway. A portion of a transportation structure is also provided.
E01D 18/00 - Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
E01D 21/06 - Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
A method for erecting a portion of a transportation structure including two assemblies of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including: (a) erecting a substructure including a first plurality of girders forming a first transportation pathway and a second plurality of girders forming a second transportation pathway, the erecting step including conveying with vehicle(s) the girders along one single transportation pathway, positioning them and having the vehicle(s) return along the other transportation pathway, (b) conveying, with vehicle(s), the tube segments along one single transportation pathway, positioning them and having the vehicle(s) return along the other transportation pathway. A portion of a transportation structure is also provided.
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.18% ≤ Manganese ≤ 0.5%, 3.1% ≤ Silicon ≤ 3.8%, 0.7% ≤ Aluminum ≤ 1.3 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09%, with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less than 34 % when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.60T to 1.65T.
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.009 %, 0.25% ≤ Manganese ≤ 0.6%, 1% ≤ Silicon ≤ 2.5%, 0.15% ≤ Aluminum ≤ 0.3 %, 0.05% ≤ Tin≤ 0.15%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 35% to 50% when calculated in accordance of Bertotti method.
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.15% ≤ Manganese ≤ 0.25%, 2.9% ≤ Silicon ≤ 3.4%, 0.8% ≤ Aluminum ≤ 1.1 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09%,with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less than 25% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.625T to 1.690T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.15% ≤ Manganese ≤ 0.7%, 3% ≤ Silicon ≤ 3.6%, 0.7% ≤ Aluminum ≤ 1.3 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 30 to 40% when calculated in accordance with Bertotti method.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.2% ≤ Manganese ≤ 0.24%, 3.1% ≤ Silicon ≤ 3.5%, 0.8% ≤ Aluminum ≤ 1.1%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0.001% ≤ Nickel ≤ 0.01, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less from 30% to 35% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.645T to 1.660T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.17% ≤ Manganese ≤ 0.4%, 3% ≤ Silicon ≤ 3.6%, 0.7% ≤ Aluminum ≤ 1.3 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09%, with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non- recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less than 25% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.15% ≤ Manganese ≤ 0.25%, 2.9% ≤ Silicon ≤ 3.4%, 0.7% ≤ Aluminum ≤ 1.3 %,0.05% ≤ Nickel ≤ 1%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09%, with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss less than 35% when calculated in accordance of Bertotti method.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.1% ≤ Manganese ≤ 0.2%, 3.1% ≤ Silicon ≤ 3.6%, 0.8% ≤ Aluminum ≤ 1.1%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0.001% ≤ Nickel ≤ 0.01, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss is from 35% to 45% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.64T to 1.66T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.30% ≤ Manganese ≤ 0.7%, 3% ≤ Silicon ≤ 3.6%, 0.4%, ≤ Aluminum ≤ 0.8 %, 0.05% ≤ Tin≤ 0.15%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 25% to 35% when calculated in accordance of Bertotti method.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.21% ≤ Manganese ≤ 0.7%, 3% ≤ Silicon ≤ 3.6%, 0.7% ≤ Aluminum ≤ 1.3 %, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09%, with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0% ≤ Nickel ≤ 1%, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss from 35% to 45% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.63T to 1.66T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 %, 0.1% ≤ Manganese ≤ 0.3%, 3.1% ≤ Silicon ≤ 3.8%, 0.6% ≤ Aluminum ≤ 0.8%, 0 % ≤ Phosphorus ≤ 0.15 %, 0 % ≤ Sulfur ≤ 0.006 %, 0 % ≤ Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1%, 0% ≤ Titanium ≤ 0.1%, 0% ≤ Vanadium ≤ 0.1%, 0% ≤ Chromium ≤ 1%, 0% ≤ Molybdenum ≤ 0.5%, 0% ≤ Tungsten≤ 0.1%, 0% ≤ Cobalt ≤ 1%, 0% ≤ Arsenic ≤ 0.05%, 0.001% ≤ Calcium ≤ 0.01%, 0% ≤ Copper ≤ 1%, 0.001% ≤ Nickel ≤ 0.01, 0 % ≤ Boron ≤ 0.05%, 0 % ≤ Lead ≤ 0.2%, 0% ≤ Tin≤ 0.2%, 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current loss in total iron loss of 40 to 50% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.66T to 1.7T.
C22C 38/20 - Ferrous alloys, e.g. steel alloys containing chromium with copper
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.009 % 0.25% ≤ Manganese ≤ 0.6% 1% ≤ Silicon ≤ 2.5% 0.15% ≤ Aluminum ≤ 0.3 % 0.05% ≤ Tin≤ 0.15% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 50% when calculated in accordance of Bertotti method.
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001 % ≤ Carbon ≤ 0.007 % 0.09% ≤ Manganese ≤ 0.15% 2.5% ≤ Silicon ≤ 3% 0.1 % ≤ Aluminum ≤ 0.5 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1 % 0% ≤ Titanium ≤ 0.1 % 0% ≤ Vanadium ≤ 0.1 % 0% ≤ Chromium ≤ 1 % 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1 % 0% ≤ Cobalt ≤ 1 % 0% ≤ Arsenic ≤ 0.05% 0.001 % ≤ Calcium ≤ 0.01 % 0% ≤ Copper ≤ 1 % 0% ≤ Nickel ≤ 1 % 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.15% ≤ Manganese ≤ 0.7% 3% ≤ Silicon ≤ 3.6% 0.7% ≤ Aluminum ≤ 1.3 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 30 to 40% when calculated in accordance with Bertotti method.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001 % ≤ Carbon ≤ 0.007 % 0.15% ≤ Manganese ≤ 0.2% 3% ≤ Silicon ≤ 3.6% 0.7% ≤ Aluminum ≤ 1.3 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% with 3.85% ≤ Si+AI+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1 % 0% ≤ Titanium ≤ 0.1 % 0% ≤ Vanadium ≤ 0.1 % 0% ≤ Chromium ≤ 1 % 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten ≤ 0.1 % 0% ≤ Cobalt ≤ 1 % 0% ≤ Arsenic ≤ 0.05% 0.001 % ≤ Calcium ≤ 0.01 % 0% ≤ Copper ≤ 1 % 0% ≤ Nickel ≤ 1 % 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 35 to 55% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.635T to 1.670T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.15% ≤ Manganese ≤ 0.25% 2.9% ≤ Silicon ≤ 3.4% 0.7% ≤ Aluminum ≤ 1.3 % 0.05% ≤ Nickel ≤ 1% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% with 3.85% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 35% when calculated in accordance of Bertotti method.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.005 % 0.2% ≤ Manganese ≤ 0.3% 3.1% ≤ Silicon ≤ 3.6% 0.6% ≤ Aluminum ≤ 1 % Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0% ≤ Nickel ≤ 1% 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of 18 recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 30% to 35% when calculated in accordance of Bertotti method.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The invention deals with a double cold rolled non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001% ≤ Carbon ≤ 0.007 % 0.1% ≤ Manganese ≤ 0.3% 3.1% ≤ Silicon ≤ 3.8% 0.6% ≤ Aluminum ≤ 0.8% Phosphorus ≤ 0.15 % Sulfur ≤ 0.006% Nitrogen ≤ 0.09% and can contain one or more of the following optional elements 0% ≤ Niobium ≤ 0.1% 0% ≤ Titanium ≤ 0.1% 0% ≤ Vanadium ≤ 0.1% 0% ≤ Chromium ≤ 1% 0% ≤ Molybdenum ≤ 0.5% 0% ≤ Tungsten≤ 0.1% 0% ≤ Cobalt ≤ 1% 0% ≤ Arsenic ≤ 0.05% 0.001% ≤ Calcium ≤ 0.01% 0% ≤ Copper ≤ 1% 0.001% ≤ Nickel ≤ 0.01 0 % ≤ Boron ≤ 0.05% 0 % ≤ Lead ≤ 0.2% 0% ≤ Tin≤ 0.2% 0% ≤Antimony ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet being made of ferrite and comprising in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 40 to 50% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.66T to 1.7T.
C22C 38/20 - Ferrous alloys, e.g. steel alloys containing chromium with copper
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The method of producing steel using an Electrical Arc Furnace (EAF) comprising successively loading a load (L) in the EAF, the load (L) containing steel scrap (SC), energizing the electrodes of the EAF for melting the load (L) and generating a melt (M); introducing a desulphurizing slagging agent in the EAF in the melt (M) for collecting sulphur in a slag (S1) above the melt (M) and then removing the slag (S1) from the EAF, and injecting oxygen in the EAF for decarburizing the melt (M).
The invention relates to an entry airlock for a vacuum chamber (4) of a facility for the vacuum processing of a moving strip (2), the airlock being of the type comprising at least one liquid tank (5) containing a liquid (11), the liquid tank comprising an upstream compartment (6) and a downstream compartment (7) separated by a vertical partition (8), which creates, in the lower portion of the tank, an unobstructed passage (9) between the two compartments, in which a guide roller (10) for guiding a strip is arranged. The airlock comprises a downstream pumping chamber (13) extending from the downstream compartment (7) and connected to a pumping means (15), in which a liquid extraction means (17) is arranged, wherein the downstream pumping chamber comprises an outlet slot (17) for a strip, and wherein the airlock comprises a means (12) for cooling the liquid (11) contained in the liquid container.
A method for erecting a portion of a transportation structure including two assemblies of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including: (a) erecting a substructure including a first plurality of girders forming a first transportation pathway, a second plurality of girders forming a second transportation pathway and a plurality of platforms forming a service pathway, the erecting step including conveying with vehicle(s) the girders and platforms along the first and/or second transportation pathway, positioning them and having the vehicle(s) return along the service pathway, (b) conveying, with vehicle(s), the tube segments along the first and/or second transportation pathway, positioning them and having the vehicle(s) return along the service pathway. A portion of a transportation structure is also provided.
E01D 18/00 - Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
A method for erecting a portion of a transportation structure including a plurality of piers, a first plurality of girders forming a first assembly of tube segments and a first rooftop transportation pathway, a second plurality of girders forming a second assembly of tube segments and a second rooftop transportation pathway, both assemblies being capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including conveying with vehicle(s) the girders along one single rooftop transportation pathway, positioning them and having the vehicle(s) return along the other rooftop transportation pathway. A portion of a transportation structure is also provided.
E01D 18/00 - Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
A method of continuous casting of a composite metallic product having a distinct shell and bulk of different compositions, said shell having a constant thickness, said method comprising the steps of: A. pouring an initial stream of liquid metal from a tundish into a mold with an initial flow rate FRini using a continuous casting nozzle, B. injecting raw material into at least one of said mixing chambers to be mixed with liquid metal flowing into said mixing chamber to modify its composition, C. injecting gas below said dome with a defined gas flowrate GFR, D. regulating the initial flow rate FRini, the gas flowrate GFR, the outlets immersion depths D1 and D2 and the casting speed Vc to obtain a composite metallic product.
iii) arranged along a belt (2) of the conveyor, below the belt, - determining a temperature rise slope from at least some of the wind boxes temperatures, the temperature rise slope representing the slope of the temperature as a function of a position along the belt of the conveyor, upstream of a maximum temperature position, - controlling a speed of the belt of the conveyor depending on the temperature rise slope.
The invention relates to a method of continuous casting of a composite metallic product having a shell of a defined thickness, comprising the steps of: A. pouring a stream of liquid metal from a tundish into a mold with a flow rate FR using a nozzle comprising: − a dome − two chambers created by an internal wall − means for injecting raw material − means for injecting gas − channels connected to the chambers and opening into the mold at two different immersion depths D1 and D2, B. injecting raw material into one chamber to be mixed with liquid to modify its composition, creating two pools of liquid metal having different compositions, separated by an interface at a depth Li C. injecting gas below said dome D. regulating FR, D1, D2 and the casting speed to regulate Li to obtain a composite metallic product with a defined shell thickness.
A leak-proof gas injected upper tundish nozzle including a protective can, and a ceramic inner portion disposed within the protective can. The ceramic inner portion may has gas flow pathways therein which have been formed using a sacrificial mold when producing the ceramic inner portion. A gas flow seal is formed on the interior surfaces of the gas flow pathways within the ceramic inner portion. The gas flow seal blocks gas leakage from the gas flow pathways into any cracks in the ceramic inner portion. The gas flow seal is formed of nickel or an alloy of nickel.
A steel sheet having a chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk is topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN/Ti(C,N) inclusions in the skin being smaller than 240 particles/mm2 and the clustering index of MnS inclusions in the skin being lower than 110 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending angle normalized to 1.5 mm and measured in the transverse direction strictly greater than 48°.
A steel sheet having a chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk is topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN/Ti(C,N) inclusions in the skin being smaller than 240 particles/mm2 and the clustering index of MnS inclusions in the skin being lower than 110 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending angle normalized to 1.5 mm and measured in the transverse direction strictly greater than 48°.
A hot dip coating equipment able to coat a steel strip (1) running along a given path, comprising a liquid metal bath, having a bath level (2), provided with one sink roll (3) and at least one stabilizing roll (4), a pair of gas knives (5), wherein said equipment is fitted with at least one drain channel (6) forming a chute starting at the bath level (2), pumping means (7) being connected to the drain channel (6), and wherein said drain channel does not include any portion crossing an extraction line (12) formed by an intersection of the bath level (2) with the steel strip (1) at the point where the strip leaves the bath.
An installation for continuously hot dip coating a steel strip (1) comprising: - a liquid metal bath (2), - gas wiping nozzles equipped with lips (3) and with a lip cleaning tool (4) able to be moved along the nozzle lips, - confinement boxes (5) enclosing the atmosphere around the steel strip path above the wiping nozzles, - a lip cleaning space (6) being provided between said gas wiping nozzles and said confinement boxes, - means for feeding non-oxidizing gas into the confinement boxes (5), - means for feeding gas into said cleaning space (6).
C23C 2/00 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor
B05C 11/06 - Apparatus for spreading or distributing liquids or other fluent materials already applied to a surfaceControl of the thickness of a coating with a blast of gas or vapour
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 2/16 - Removing excess of molten coatingsControlling or regulating the coating thickness using fluids under pressure, e.g. air knives
C23C 2/18 - Removing excess of molten coatings from elongated material
A steel sheet hasa chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk includes an inclusion population in which the sum of clustering indexes of MnS and TiN/Ti(C,N) inclusions is less than or equal to 300 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending anisotropy equal to or lower than 7°.
A hot dip coating equipment able to coat a steel strip (1) running along a given path, comprising a liquid metal bath, having a bath level (2), provided with one sink roll (3) and at least one stabilizing roll (4), a pair of gas knives (5), wherein said equipment is fitted with at least one drain channel (6) forming a chute starting at the bath level (2), pumping means (7) being connected to the drain channel (6), and wherein said drain channel does not include any portion crossing an extraction line (12) formed by an intersection of the bath level (2) with the steel strip (1) at the point where the strip leaves the bath.
An installation for continuously hot dip coating a steel strip (1) comprising: - a liquid metal bath (2), - gas wiping nozzles equipped with lips (3) and with a lip cleaning tool (4) able to be moved along the nozzle lips, - confinement boxes (5) enclosing the atmosphere around the steel strip path above the wiping nozzles, - a lip cleaning space (6) being provided between said gas wiping nozzles and said confinement boxes, - means for feeding non-oxidizing gas into the confinement boxes (5), - means for feeding gas into said cleaning space (6).
C23C 2/00 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor
B05C 11/06 - Apparatus for spreading or distributing liquids or other fluent materials already applied to a surfaceControl of the thickness of a coating with a blast of gas or vapour
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 2/16 - Removing excess of molten coatingsControlling or regulating the coating thickness using fluids under pressure, e.g. air knives
C23C 2/18 - Removing excess of molten coatings from elongated material
A method for the treatment of ferrous scrap 1 including magnetic and non-magnetic materials, the method including at least a friction step 110 wherein the ferrous scrap is subjected to a mechanical friction to obtain cleaned scrap 11 and a magnetic sorting step 120 wherein the cleaned scrap 11 is separated into a non-magnetic coarse fraction 12A and a magnetic coarse fraction 12B. An associated steelmaking method and plant is also provided.
Dash panel reinforcement ring (1) designed to reinforce a dash panel assembly (3) of an automotive vehicle (2) in the case when said vehicle comprises an Heating Ventilation and Air Conditioning unit inserted into said dash panel assembly
A steel sheet hasa chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk includes an inclusion population in which the sum of clustering indexes of MnS and TiN/Ti(C,N) inclusions is less than or equal to 300 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending anisotropy equal to or lower than 7°.
Dash panel reinforcement ring (1) designed to reinforce a dash panel assembly (3) of an automotive vehicle (2) in the case when said vehicle comprises an Heating Ventilation and Air Conditioning unit inserted into said dash panel assembly
A method is for producing a high strength coated steel sheet having a yield stress YS>550 MPa, a tensile strength TS>980 MPa, and improved formability and ductility. The steel contains: 0.15%≤C≤0.25%, 1.2%≤Si≤1.8%, 2%≤Mn≤2.4%, 0.1%≤Cr≤0.25%, Al≤0.5%, the balance being Fe and unavoidable impurities. The sheet is annealed at a temperature between TA1=Ac3−0.45*(Ms−QT) and TA2=830° C. for at least 30 s then quenched by cooling it to a quenching temperature QT between 180° C. and 300° C., then heated to a partitioning temperature PT between 380° C. and 480° C. and maintained at this temperature for a partitioning time Pt between 10 s and 300 s, then either hot dip coated and cooled to the room temperature with a cooling rate of at least 25° C./s below 300° C., or directly cooled to the room temperature with a cooling rate of at least 25° C./s and further electro-galvanized, or cooled to the room temperature with a cooling rate of at least 25° C./s without coating. The steel contains 5% to 25% of intercritical ferrite, at least 50% of partitioned martensite, at least 10% of residual austenite, less than 10% of fresh martensite, and bainite, the sum of partitioned martensite and bainite being at least 60%. It also relates to the obtained coated or non coated sheet.
C23F 17/00 - Multi-step processes for surface treatment of metallic material involving at least one process provided for in class and at least one process covered by subclass or or class
C25D 3/22 - ElectroplatingBaths therefor from solutions of zinc
C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys
73.
CRACK-CONTAINING HOT-STAMPED COATED STEEL PART WITH EXCELLENT SPOT-WELDABILITY AND EXCELLENT PAINTING ADHESION
A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
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A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
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A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
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The hot-stamped coated steel part comprises an undeformed portion having a thickness ePflat from 0.6 mm to 3.5 mm, and at least one deformed portion. A lineic density of cracks dC in the coating in the undeformed portion is higher than or equal to a minimum lineic density of cracks dCmin(ePflat) defined as:
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A cooling system of a battery pack including a metallic coated steel sheet wherein the metallic coating is based on aluminum and includes optionally silicon and unavoidable impurities.
The invention relates to a pickling installation comprising: - a pickling tank, - a concentration tank wherein said concentration tank is connected to said pickling tank, - a crossflow filtration device, able to produce a permeate and a retentate, comprising an entry side, an permeate exit side and a retentate exit side wherein - said entry side 5e is connected to said concentration tank, - said retentate exit side is connected to said entry side and to said concentration tank.
The steel production device (1) comprising an electric arc furnace (2), wherein a metallic material is melted, and a ladle (4), wherein the melted metallic material is poured from an outlet (12) of the electric arc furnace (2). The steel production device further comprises a sleeve (22) extending between the outlet (12) of the electric arc furnace (2) and the ladle (4), the melted metallic material being poured into said sleeve (22) from the electric arc furnace outlet (12) to the ladle (4), said sleeve (22) being arranged to isolate the melted metallic material stream (20) flowing through said sleeve (22) from ambient air.
C21C 5/52 - Manufacture of steel in electric furnaces
F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
F27B 3/19 - Arrangement of devices for discharging
F27D 3/14 - Charging or discharging liquid or molten material
B22D 2/00 - Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 41/12 - Travelling ladles or similar containersCars for ladles
B22D 41/58 - Pouring-nozzles with gas injecting means
The invention relates to a pickling installation for a pickling solution to pickle electrical steel comprising: - a pickling tank, - a concentration tank wherein said concentration tank is connected to said pickling tank, - a crossflow filtration device, able to produce a permeate and a retentate, comprising an entry side, an permeate exit side and a retentate exit side wherein - said entry side is connected to said concentration tank, - said retentate exit side is connected to said entry side and to said concentration tank.
A direct reduction shaft furnace having at least one probe disposed vertically within the reduction zone thereof. The probe preferably extends from the top to the bottom of the reduction zone. The probe allows for gas sampling along the length thereof and transmittal of the gas to at least one type of gas analysis device. The probe may also allow for the measurement of the temperature and pressure of the gas sample as it is taken.
F27B 1/28 - Arrangements of monitoring devices, of indicators, of alarm devices
C21B 13/02 - Making spongy iron or liquid steel, by direct processes in shaft furnaces
F27D 21/00 - Arrangement of monitoring devicesArrangement of safety devices
G01K 13/024 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
H01J 49/04 - Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locksArrangements for external adjustment of electron- or ion-optical components
e2242e4.22O + 2 HCl, so as to obtain a reaction mixture comprising hydrochloric acid and hydrated forms of iron sulphate, wherein said reactants comprises from 5 to 40 weight percent of sulphuric acid and ii. distilling said reaction mixture to obtain a distillate and a concentrate, iii. mixing said concentrate with water such that the weight ratio between the concentrate and the water is from 0.1 to 10, to obtain an aqueous solution, iv. setting said aqueous solution to a temperature from -10 to 50°C to obtain a liquid phase and a solid phase, v. separating said liquid phase and said solid phase obtained in step iv.
The patent relates to a method of production of a non-oriented electrical steel sheet comprising a step of warm rolling said hot rolled steel sheet, wherein said warm rolling at least three rolling passes, wherein - the first rolling pass is performed with an entry temperature of the steel sheet from 70°C to 140°C, - the second rolling pass is performed with an entry temperature of the steel sheet from 90°C to 210°C and being greater that the entry temperature of said first rolling pass, - the third rolling pass is performed with an entry temperature of the steel sheet from 190°C to 250°C and being greater that the entry temperature of said second rolling pass, - the remaining rolling passes are performed with an entry temperature of the steel sheet from 50°C to 100°C.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
H01F 1/147 - Alloys characterised by their composition
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
82.
A METHOD OF MANUFACTURING NON-ORIENTED ELECTRICAL STEEL
The patent relates to a method of production of a non-oriented electrical steel sheet comprising a step of warm rolling, wherein said warm rolling comprises five to eight rolling passes, wherein - the first rolling pass is performed with an entry temperature of the steel sheet from 70 to 120°C, - the second rolling pass is performed with an entry temperature of the steel sheet from 90 to 175°C and greater than the entry temperature of the first rolling pass, - the remaining rolling passes are performed with an entry temperature of the steel sheet from 190 to 250°C.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
H01F 1/147 - Alloys characterised by their composition
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
83.
A METHOD OF MANUFACTURING NON-ORIENTED ELECTRICAL STEEL
The patent relates to a method of production of a non-oriented electrical steel sheet comprising a step of warm rolling said hot rolled steel sheet, wherein said warm rolling at least three rolling passes, wherein - the first rolling pass is performed with an entry temperature of the steel sheet from 70°C to 140°C, - the second rolling pass is performed with an entry temperature of the steel sheet from 90°C to 210°C and being greater that the entry temperature of said first rolling pass, - the third rolling pass is performed with an entry temperature of the steel sheet from 190°C to 250°C and being greater that the entry temperature of said second rolling pass, - the remaining rolling passes are performed with an entry temperature of the steel sheet from 50°C to 100°C.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
H01F 1/147 - Alloys characterised by their composition
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
84.
A METHOD OF MANUFACTURING NON-ORIENTED ELECTRICAL STEEL
The patent relates to a method of production of a non-oriented electrical steel sheet comprising a step of warm rolling, wherein said warm rolling comprises five to eight rolling passes, wherein - the first rolling pass is performed with an entry temperature of the steel sheet from 70 to 120°C, - the second rolling pass is performed with an entry temperature of the steel sheet from 90 to 175°C and greater than the entry temperature of the first rolling pass, - the remaining rolling passes are performed with an entry temperature of the steel sheet from 190 to 250°C.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
H01F 1/147 - Alloys characterised by their composition
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
85.
METHOD FOR DETERMINING AN OPTIMIZED SILICON CONTENT IN LIQUID STEEL
A method to calculate an optimized amount of silicon to be added in a liquid steel produced using copper-containing scrap. The invention is also related to a method of hot rolling a steel semi-product resulting from the casting of a liquid steel produced using copper-containing scrap.
A ferrous alloy powder for additive manufacturing, obtained by atomization with a gas made of at least 95% in volume of nitrogen, the alloy including carbon up to 0.5 wt. %, titanium up to 11.0 wt. %, boron up to 5 wt. %, manganese up to 30 wt. %, aluminium up to 15 wt. %, silicon up to 1.5 wt. %, vanadium up to 0.5 wt. %, copper up to 2 wt. %, niobium up to 2 wt. %, the remainder being iron and residual elements, the powder including endogenous nitrides and/or carbonitrides of at least one element chosen among a group consisting of titanium, aluminium, boron, vanadium, silicon, and niobium, the nitrogen content of such ferrous alloy powder being above the solubility limit of nitrogen in such alloy, at the atomization temperature. A manufacturing method of such powder is also provided.
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
B33Y 70/00 - Materials specially adapted for additive manufacturing
A martensitic steel sheet comprising the following elements, 0.07% ≦ C ≦ 0.12%; 1.9% ≦ Mn ≦ 2.5 %; 0.2% ≦ Si ≦ 0.6%; 0.01% ≦ Al ≦ 0.1%; 0.1% ≦ Cr ≦ 0.5%; 0.2% ≦ Mo ≦ 0.6%; 0.001% ≦ Nb ≦ 0.1%; 0.001% ≦ Ti ≦ 0.1%; 0.0005% ≦ B ≦ 0.005%; 0% ≦ S ≦ 0.09%; 0% ≦ P ≦ 0.09%; 0% ≦ N ≦ 0.09%; 0% ≦ V≦ 0.1%; 0% ≦ Ni ≦ 1%; 0% ≦ Cu ≦ 1%; 0% ≦Sn≦ 0.1%; 0% ≦ Pb≦ 0.1%; 0% ≦ Sb≦ 0.1%; 0.001% ≦ Ca≦ 0.01%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel consisting of, by area percentage, martensite from 50% to 70%, ferrite from 10% to 30% and Bainite from 10% to 35%.
The patent relates to a method of production of a non-oriented electrical steel sheet comprising a step of warm rolling said hot rolled steel sheet, wherein said warm rolling comprises five to eight rolling passes, wherein - the warm rolling comprises a peak temperature rolling pass being the fourth or fifth rolling passes, having an entry temperature of the steel sheet from 210°C to 250°C and being the warm rolling pass having the greatest entry temperature, - the rolling passes prior said peak rolling temperature rolling pass are performed with an entry temperature of the steel sheet from 170°C to 230°C, - the entry temperature of the steel sheet for the warm rolling passes after said peak temperature rolling is from 10°C to 30°C lower than the previous rolling pass.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
H01F 1/147 - Alloys characterised by their composition
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
89.
METHOD FOR DETERMINING AN OPTIMIZED SILICON CONTENT IN LIQUID STEEL
A method to calculate an optimized amount of silicon to be added in a liquid steel produced using copper-containing scrap. The invention is also related to a method of hot rolling a steel semi-product resulting from the casting of a liquid steel produced using copper-containing scrap.
A method for hot rolling a steel semi product comprising the estimation of the composition of the liquid steel to be cast, said liquid steel being produced using copper-containing scrap, and the calculation of the melting temperature of the copper phase formed on the semi-product during casting to reheat the semi-product at an optimised reheating temperature.
A method for hot rolling a steel semi-product, comprising the steps of producing a liquid steel, said production step comprising the melting of steel scrap comprising copper, estimating the amounts of copper %Cuest, tin %Snest, antimony %Sbest, sulphur %Sest, in said produced liquid steel, casting the liquid steel to produce a semi-product, reheating the semi product to a reheating temperature TR and hot rolling the reheated semi-product. The method further comprises the calculation of optimized amounts of tin, antimony, and sulfur.
The instant technology relates in particular to a method for determining beam-to-region assignment data for a powder-bed beam fusion device, the method comprising: - s2) for an ensemble of hatch-lines to be gradually solidified using beam irradiation, partitioning the ensemble of hatch-lines into a plurality of distinct subsets, each gathering some of the hatch-lines and forming a region (R1 – R8) to be processed by one of one or more beams of the device, said partitioning comprising, for at least some of the regions, grouping some of the hatch-lines, each untruncated, the hatch-lines being located one aside the other and being distributed one after the other successively along a given direction perpendicular to the hatch-lines, - s3) Determining the beam-to-region assignment data.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
The invention deals with a cold-rolled and heat-treated steel sheet, made of a steel having a composition comprising, by weight percent: C : 0.03 - 0.25 % Mn : 3.0 - 8.0 % Si : 0.1 - 2.0 % Al: 0.03 - 3.0% Mo : 0.01 - 0.5 % S < 0.010 % P < 0.020 % N < 0.02 % and comprising optionally one or more of the following elements, in weight percentage: B< 0.004 % Ti < 0.04 % Nb < 0.1 % Cr < 0.80 % the remainder of the composition being iron and unavoidable impurities resulting from the smelting, said steel sheet having a microstructure comprising, in surface fraction, - from 5% to 50% of retained austenite, - the rest being ferrite.
The instant technology relates in particular to a method for determining beam-to-region assignment data for a powder-bed beam fusion device, the method comprising: - s2) for an ensemble of hatch-lines to be gradually solidified using beam irradiation, partitioning the ensemble of hatch-lines into a plurality of distinct subsets, each gathering some of the hatch-lines and forming a region (R1 – R8) to be processed by one of one or more beams of the device, said partitioning comprising, for at least some of the regions, grouping some of the hatch-lines, each untruncated, the hatch-lines being located one aside the other and being distributed one after the other successively along a given direction perpendicular to the hatch-lines, - s3) Determining the beam-to-region assignment data.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
22424.22O + 2 HCl, so as to obtain a reaction mixture comprising hydrochloric acid and hydrated forms of iron sulphate, wherein said reactants comprises from 5 to 40 weight percent of sulphuric acid and ii. distilling said reaction mixture to obtain a distillate and a concentrate, iii. mixing said concentrate with water such that the weight ratio between the concentrate and the water is from 0.1 to 10, to obtain an aqueous solution, iv. setting said aqueous solution to a temperature from -10 to 50°C to obtain a liquid phase and a solid phase, v. separating said liquid phase and said solid phase obtained in step iv.
The invention deals with a cold-rolled and heat-treated steel sheet, made of a steel having a composition comprising, by weight percent: C : 0.03 - 0.25 %, Mn : 3.5 – 7.0 %, Si : 0.1 – 2.0 %, Al: 0.5 – 3.0%, Mo : 0.01 – 0.5 %, S ≤ 0.010 %, P ≤ 0.020 %, N ≤ 0.02 %, and comprising optionally one or more of the following elements, in weight percentage: B≤ 0.004 %, Ti ≤ 0.04 %, Nb ≤ 0.1 %, Cr ≤ 0.80 %, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, said steel sheet having a microstructure comprising, in surface fraction, - from 5% to 50% of retained austenite, - the rest being ferrite.
A method for hot rolling a steel semi product comprising the estimation of the composition of the liquid steel to be cast, said liquid steel being produced using copper-containing scrap, and the calculation of the melting temperature of the copper phase formed on the semi-product during casting to reheat the semi-product at an optimised reheating temperature.
A method for hot rolling a steel semi-product, comprising the steps of producing a liquid steel, said production step comprising the melting of steel scrap comprising copper, estimating the amount of copper %Cuest, and optionally of tin %Snest, antimony %Sbest, sulphur %Sest, in said produced liquid steel, casting the liquid steel to produce a semi-product, reheating the semi product to a reheating temperature TR and hot rolling the reheated semi-product. The method further comprises the calculation of optimized amounts of tin, antimony, and sulfur.
06 - Common metals and ores; objects made of metal
Goods & Services
Common metals and their alloys; iron, unprocessed or semi-processed steel products; stainless steel, carbon steel, tinplate, hardened steel, in the form of billets, blooms, slabs, sheets, strips, foils, ribbons, blanks, cylinders, coils, strips, profiles, bars, beams, piles, balls, rods, logs, ingots; tubes, pipes, sections, plates, rings, springs, piles, girders, foils, hoops, joists and other shapes; non-electric metallic cables and wires, including metal welding wires and barbed wires; clad steel, coated steel as notably galvanized steel, chromium-plated steel, aluminium-coated steel; coated steel sheets or plates; prelacquered steel; pre-painted steel; metal building materials; metal tanks and metal containers; metal parts for vehicles, not included in other classes; metal materials for railway tracks; metal street furniture.
100.
STEEL SHEET FOR TOP COVER OF BATTERY PACK AND ITS MANUFACTURING METHOD
A top cover of battery pack including a metallic coated steel sheet wherein the metallic coating is based on aluminum and includes optionally silicon and unavoidable impurities.
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
