A metal powder having a composition including the following elements, expressed in content by weight: 12%≤Mo≤18%, 3%≤P≤7%, 0.5%≤C≤3%, 0.5%≤B≤5%, Si≤1%, the balance being Fe and unavoidable impurities resulting from the elaboration, the microstructure of the metal powder including at least 95 wt % of an amorphous phase, the remainder being made of crystalline phases.
C22C 45/02 - Amorphous alloys with iron as the major constituent
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
B22F 1/08 - Metallic powder characterised by particles having an amorphous microstructure
B22F 9/00 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor
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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
A High Manganese hot rolled steel having a composition including of the following elements 0.8%≤Carbon≤1.3%, 9.5%≤Manganese≤22%, 0.01%≤Silicon≤3%, 0.01%≤Aluminum≤3%, 0.03%≤Phosphorus≤0.1%, 0.03%≤Sulfur≤0.1%, 0%≤Nitrogen≤0.01%, 0%≤Niobium≤0.03%, 0%≤Titanium≤0.2%, 0%≤Chromium≤1.5%, 0%≤Molybdenum≤0.5%, 0%≤Calcium≤0.005%, 0.01%≤Copper≤2%, 0.01%≤Nickel≤3%, 0%≤Boron≤0.01%, 0%≤Magnesium≤0.005%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel consisting in, in area fraction, 95% or more of Austenite, 0% to 5% Carbides wherein the grain size of the grains of Austenite is 15 microns or more.
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
An apparatus for the production of iron through reduction of iron ore by an electrolysis reaction, the electrolysis reaction emitting a gas, the apparatus including a casing including a gas-permeable anode plate being made of a cellular material, a cathode plate, both facing each other and being separated by an electrolyte chamber, the gas-permeable anode plate being made of a cellular material including a plurality of cells, each cell being delimited by a circumferential wall and being open on the two opposite sides of the gas-permeable anode plate, the circumferential wall being made from a plurality of metallic sheets which are interlocked together with interlocking means.
A direct reduction method to manufacture a direct reduced iron product 12 having a carbon content less than 1.8% by weight and a shaft furnace exit temperature lower than 65° C. A carbon-containing cooling gas 30 is introduced into the cooling zone 3 of the shaft furnace 1 with a flow rate higher than 800 Nm3/ton of Direct Reduced Iron produced.
A method to define a microstructure of a steel during the hot rolling, including at least three passes, including the steps of a) defining a representative grain size value of the steel before a first rolling pass, b) defining, at the end of a first inter-pass, a proportion of recrystallised and of non-recrystallised grains, representative grain size and dislocation density for the recrystallised and said non-recrystallised grains, c) defining, at the end of a second inter-pass, the proportion of the different types of grains, representative grain sizes and dislocation densities of the grains, d) defining, before a third rolling pass, a proportion of the representative recrystallised and non-recrystallised grain, a representative recrystallised grain and a representative non-recrystallised grain defined.
A method of making a high strength base-hardened tee rail and the tee rail produced by the method. The method includes the steps of providing a carbon steel tee rail, the steel tee rail provided at a temperature between 70° and 800° C.; and cooling the steel tee rail at a cooling rate that the temperature in ° C. of the surface of the base of the steel tee rail, is maintained in a region between: an upper cooling rate boundary plot defined by an upper line connecting xy-coordinates (0 s, 800° C.), (80 s, 675° C.), (110 s, 650° C.) and (140 s, 635° C.); and a lower cooling rate boundary plot defined by a lower line connecting xy-coordinates (0 s, 700° C.), (80 s, 575° C.), (110 s, 550° C.) and (140 s, 535° C.).
A steel section has a web central portion connected on each side to a flange portion having a thickness of at least 100 mm. The steel section microstructure includes at least one kind of vanadium precipitates possibly comprising also one or more metal chosen among chromium, manganese and iron, the precipitates being chosen among nitrides, carbides, carbo-nitrides or any combination of them, more than 70% of such precipitates having a mean diameter below 6 nm. It also deals with a manufacturing method thereof.
A cold rolled, annealed and tempered steel sheet is provided, made of a steel having a composition including, by weight percent C: 0.03-0.18%, Mn: 4.5-10.0%, B: 0.0005-0.005%, Ti 0.010-0.050%, Si 0.1-1.20%, S≤0.010%, P≤0.020%, N≤0.010%, and including optionally one or more of the following elements, in weight percentage Al≤2.5%, Mo≤0.4%, Nb≤0.050%, Cr≤0.5%, V≤0.2%, a remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 0% to 30% of ferrite, from 3% to 30% of retained austenite, with a manganese content in austenite [Mn]γ, expressed in weight percent, such that Fγ×([Mn]γ-1.3×% Mn)2>1.00, a balance being tempered martensite.
A method for manufacturing pig iron in a smelting furnace including a vessel, the method including the following successive steps: loading DRI product in the vessel melting the DRI product to form a pig iron layer topped by a slag layer and injecting a desulphurizing reagent directly in the pig iron layer. It also deals with the manufacturing of steel from the-pig iron and the associated electrical smelting furnace.
A method for determining a temperature TST of a steel beam (2) after the beam has been water-cooled in a cooling machine, the method comprising: - acquiring cooling configuration data specifying which faces of the beam are impinged by water jets, and acquiring the corresponding water flow values, - for the different faces (W1, W2, F1 – F6) of the beam, determining, from the cooling configuration data, what cooling regime undergoes the face of the beam considered, the cooling regime being selected among, at least: direct water-cooling; powered cooling when the face has no water projected thereon, by any of the jets, but another face, which adjoins laterally the face considered, has water projected thereon; air-cooling; - computing cooling powers for the different faces of the beam, depending on the corresponding cooling regimes, and, when appropriate, depending on the associated water flow value.
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 11/00 - Process control or regulation for heat treatments
G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
B21B 37/74 - Temperature control, e.g. by cooling or heating the rolls or the product
11.
STEEL PART, WIRE AND METHOD FOR MANUFACTURING A STEEL PART
The electrolysis device (1) for reducing iron oxides into metallic iron comprises : - at least one anode (6), extending between an inner surface (10) and an outer surface (12), opposite the inner surface (10), - at least one cathode (4) comprising a collecting surface (8) on which metallic iron is deposited after reduction of iron oxides, the collecting surface (8) facing the inner surface (10) of the anode (6), - an electrolytic bath comprising an anolyte (16), in which the anode (6) is immersed, and a catholyte (18), in which the cathode (4) is immersed, wherein the anode (6) extends in a housing (14) separating in a fluid tight manner the anolyte (16) from the catholyte (18), the chemical composition of the anolyte (16) being different from the chemical composition of the catholyte (18).
A hot-stamped coated steel part comprising 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 satisf in the followin condition: 16 < Epc <40 with Formula I 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 dCmin the coating in the undeformed portion is higher than or equal to a minimum lineic density of cracks dCmin(ePflat) defined as: Formula II
Side structure (1) for a motor vehicle (3) including an inner and outer frame (11, 13) each forming a closed ring and having two openings corresponding to the front and rear doors (8, 10), wherein the inner and outer frames (11, 13) are each formed by hot stamping respectively an inner and an outer frame blank (111, 113), the outer frame blank being a single tailor welded blank made of steel and wherein the inner and outer frames (11,13) are assembled to form a hollow volume (7) between them.
The invention concerns an aqueous solution comprising at least one hydrate of zinc sulfate, and at least one P1-M1 copolymer prepared from monomers comprising a) an ethylenically unsaturated monomer P1 containing at least one phosphorus atom; and b) a monomer M1 selected from (meth)acrylates, hydroxyalkyl (meth)acrylates, and (meth)acrylic acid, a kit for the preparation thereof, the use of the solution for improving the degreasability of the outer surface of an oiled metallic coating based on zinc or its alloys, which coats at least one face of a steel substrate, a method for preparing an oiled Zn-coated steel substrate, a steel substrate and an automotive part made therefrom.
C25D 3/22 - ElectroplatingBaths therefor from solutions of zinc
C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C09D 143/02 - Homopolymers or copolymers of monomers containing phosphorus
C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys
C25D 5/48 - After-treatment of electroplated surfaces
A method for determining a temperature of a steel beam (2) after the beam has been water-cooled in a cooling machine, the method comprising: - acquiring cooling configuration data specifying which faces of the beam are impinged by water jets, and what are the corresponding water flow values, - for the different faces (W1, W2, F1 – F6) of the beam, determining, from the cooling configuration data, what cooling regime undergoes the face of the beam considered, the cooling regime being selected among, at least: direct water-cooling; powered cooling when the face has no water projected thereon, by any of the jets, but, for an other of said faces which adjoins laterally the face considered, said other face has water projected thereon; air-cooling; - computing cooling powers for the different faces of the beam, depending on the corresponding cooling regimes, and, when appropriate, depending on the associated water flow value.
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 11/00 - Process control or regulation for heat treatments
G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
G01B 7/06 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width, or thickness for measuring thickness
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
Rear side structure inner (10) for a pickup truck frame (1) manufactured by stamping an inner blank (10b) – said rear side structure inner (10) comprising a C- pillar, a belt rail, a wheelouse inner and a D-pillar portion (101, 102, 103, 104,).
Rear side structure outer (20) for a pickup truck frame (1) manufactured by stamping an outer blank (20b) – said rear side structure outer (20) comprising a C- pillar, a belt rail, a reinforcement a D-pillar portion (201, 202, 203, 204).
A steel sheet coated with an aluminum-based coating and a second zinc coating having a thickness less than or equal to 1.1 μm is provided. A method for preparing the coated steel sheet, a method for preparing a press-hardened part from the steel sheet, a press-hardened part, and the use of the press-hardened part are also provided.
C23C 10/20 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
C23C 14/02 - Pretreatment of the material to be coated
C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
C23C 28/02 - 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 only coatings of metallic material
C25D 3/22 - ElectroplatingBaths therefor from solutions of zinc
C25D 5/52 - After-treatment of electroplated surfaces by brightening or burnishing
C25D 13/04 - Electrophoretic coating characterised by the process with organic material
The invention concerns an aqueous solution comprising at least one hydrate of zinc sulfate, and at least one P1-M1 copolymer prepared from monomers comprising a) an ethylenically unsaturated monomer P1 containing at least one phosphorus atom; and b) a monomer M1 selected from (meth)acrylates, hydroxyalkyl (meth)acrylates, and (meth)acrylic acid, a kit for the preparation thereof, the use of the solution for improving the tribological properties of the outer surface of a metallic coating based on zinc or its alloys, which coats at least one face of a steel substrate, a method for preparing a Zn-coated steel substrate, a steel substrate and an automotive part made therefrom.
C25D 3/22 - ElectroplatingBaths therefor from solutions of zinc
C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C09D 143/02 - Homopolymers or copolymers of monomers containing phosphorus
C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys
C25D 5/48 - After-treatment of electroplated surfaces
C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
27.
SOLUTION FOR THE TREATMENT OF A ZN-COATED STEEL SHEET TO IMPROVE THE TRIBOLOGICAL PROPERTIES THEREOF
The invention concerns an aqueous solution comprising at least one hydrate of zinc sulfate, and at least one P1-M1 copolymer prepared from monomers comprising a) an ethylenically unsaturated monomer P1 containing at least one phosphorus atom; and b) a monomer M1 selected from (meth)acrylates, hydroxyalkyl (meth)acrylates, and (meth)acrylic acid, a kit for the preparation thereof, the use of the solution for improving the tribological properties of the outer surface of a metallic coating based on zinc or its alloys, which coats at least one face of a steel substrate, a method for preparing a Zn-coated steel substrate, a steel substrate and an automotive part made therefrom.
C25D 3/22 - ElectroplatingBaths therefor from solutions of zinc
C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C09D 143/02 - Homopolymers or copolymers of monomers containing phosphorus
C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys
C25D 5/48 - After-treatment of electroplated surfaces
The invention relates to a process for hot-dip plating a steel strip on a galvanizing line comprising: (i) Acquiring the preset strip width Wp of the steel strip at the exit of the galvanizing line and the preset coating weight CWp of molten Zn- based alloy, CWp being greater than or equal to 400 g/m², (ii) providing the steel strip with an initial strip width W0 determined based on Wp and CWp so that the difference between W0 and Wp is at least two times bigger than an inferred faulty edging E determined based on CWp, (iii) dipping the steel strip in a bath of molten Zn-alloy comprising 0.5-12 wt% aluminium, 0.2-6 wt% magnesium, (iv) wiping the molten Zn-based alloy and adjusting the coating weight according to CWp, (v) cooling, (vi) trimming both edges of the steel strip to obtain the preset strip width Wp.
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 11/00 - Process control or regulation for heat treatments
G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
31.
COLD ROLLED AND HEAT-TREATED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
The invention relates to a cold rolled and heat-treated steel sheet having a composition comprising in percentage by weight: C : 0.03 - 0.12 %, Mn : 1.2 - 2.3%, Al : 0.01 - 0.1%, Nb : 0.01% - 0.1%, Ti ≤ 0.12%, P ≤ 0.09 %, S ≤ 0.09 %, N ≤ 0.009% and can contain Si ≤ 2 %, Cr ≤ 0.5 %, Ni ≤ 3%, Ca ≤ 0.005%, Cu ≤ 2%, Mo ≤ 0. 5%, V ≤ 0.1%, B ≤ 0.003%, Ce ≤ 0.1%, Mg ≤ 0.010%, Zr ≤ 0.010%, the remainder being iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 5% to 10% Cementite, 31 to 50% of Recrystallized ferrite wherein the average grain size of recrystallized ferrite is less than or equal to 2.5 microns, 45 to 64% of non-recrystallized ferrite, wherein the cumulated amount of recrystallized ferrite and non-recrystallized ferrite is from 85% to 95% and includes 0.5% to 2% of Carbides of Niobium, the optional cumulated amount of residual austenite and martensite being from 0% to 5%.
C21D 1/18 - HardeningQuenching with or without subsequent tempering
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 2/04 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor characterised by the coating material
The invention relates to a cold rolled and heat treated steel sheet having a composition comprising in percentage by weight: C : 0.02 - 0.12 %, Mn : 1.2 - 2.3%, Al : 0.01 - 0.1%, Nb : 0.01% - 0.1%, Ti : 0.01 - 0.12%, P ≤ 0.09 %, S ≤ 0.09 %, N ≤ 0.009% and can contain Si ≤ 2 %, Cr ≤ 0.5 %, Ni ≤ 3%, Ca ≤ 0.005%, Cu ≤ 2%, Mo ≤ 0. 5%, V ≤ 0.1%, B ≤ 0.003%, Ce ≤ 0.1%, Mg ≤ 0.010%, Zr ≤ 0.010%, the remainder being iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 2% to 10% Cementite, 30 to 60% of Recrystallized ferrite, 38 to 68% of non- recrystallized ferrite, wherein the cumulated amount of Recrystallized ferrite and Non-recrystallized ferrite is from 85% to 96% and includes 0.5% to 2% of Carbides of Niobium, the optional cumulated amount of residual austenite and martensite being from 0% to 5%.
C21D 1/18 - HardeningQuenching with or without subsequent tempering
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 2/04 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor characterised by the coating material
Rear side structure inner (10) for a pickup truck frame (1) manufactured by stamping an inner blank (10b) – said rear side structure inner (10) comprising a C- pillar, a belt rail, a wheelouse inner and a D-pillar portion (101, 102, 103, 104,).
Rear side structure outer (20) for a pickup truck frame (1) manufactured by stamping an outer blank (20b) – said rear side structure outer (20) comprising a C- pillar, a belt rail, a reinforcement a D-pillar portion (201, 202, 203, 204).
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 11/00 - Process control or regulation for heat treatments
G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
B21B 37/74 - Temperature control, e.g. by cooling or heating the rolls or the product
The present invention relates to a cold rolling stand for rolling a metallic strip having: a pair of work rolls determining a roll bite, a first set of spraying devices able to spray a first lubricant onto said pair of work rolls, a second set of spraying devices able to spray a second lubricant upstream of said work rolls, a collector able to collect the first and second lubricants, an inversion system, a tank connected to the collector, to the first set of spraying devices and to the inversion system, the tank being able to contain the sprayed lubricant, the inversion system being connected to the second set of spraying devices. This invention also relates to a cold rolling process.
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
A process of manufacturing a silicon-graphene-graphite composite for a Silicon-based anode of a lithium-ion battery, including bringing together silicon particles with a particle size distribution D10 above 100 nm and an exfoliatable graphene-based material in a first organic solvent, the weight ratio of silicon to exfoliatable graphene-based material being between 1.5 and 9, mixing at at least 500 rpm for at least 20 min so as to mill the silicon particles into nanoparticles, exfoliate at least a part of the exfoliatable graphene-based material into graphene and form a silicon-graphene composite, bringing together the silicon-graphene composite and graphite, the weight ratio of carbon to silicon being between 1.5 and 19 and the viscosity being between 0.025 and 160 Pa·s at 1 s−1 shear rate, and mixing for at least 2 min so as to form a silicon-graphene-graphite composite.
A double cold rolled non-oriented electrical steel sheet having a composition including, 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 various optional elements. The remainder composition being iron and unavoidable impurities caused by processing. The microstructure is made of ferrite and has 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 from 30% to 35% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.645 T to 1.660 T.
The invention deals with a hot worked and annealed graphitic steel product which composition comprises in weight percent C : 0.70-0.90% Mn : 0.160- 0.40% % Si ≤ 1.0-3.0% Al :0.001-0.09% P ≤ 0.090% S : 0.040-0.090% N: 0.0040-0.0100% H ≤ 0.0004 % and comprising optionally one or more of the following elements Ti ≤ 0.090% B ≤ 0.006% Cr ≤ 1% ≤ Mo ≤ 0.5% V ≤ 0.2% Nb ≤ 0.1% Ni ≤ 3.0% Co ≤ 3.0% Cu ≤ 3.0% Sn ≤ 0.1% Ce ≤ 0.1% Mg ≤ 0.1% Zr ≤ 0.1% Ca ≤ 0.008% the manganese, sulfur, titanium, boron and nitrogen weight contents being such that %Mn / %S ≥ 4.0 and N - 0.3xTi - 1.3xB ≥ 0 the remainder of the composition being iron and unavoidable impurities resulting from the smelting, said steel having a microstructure comprising 1 to 10% in area fraction of free graphite particles, up to 5% optional cementite, the balance being ferrite.
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C21D 9/22 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for drillsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for milling cuttersHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for machine cutting tools
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
The invention deals with a non-oriented electrical steel sheet having a thickness from 0.3mm to 0.8mm and having a composition comprising the following elements, expressed in percentage by weight, 0.0001% ≤ Carbon ≤ 0.007 %, 0.7% ≤ Manganese ≤ 1.2%, 2.6% ≤ Silicon ≤ 3.0%, 0.7% ≤ Aluminum ≤ 1.2 %, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09%, with 4.3% ≤ Si+Al+Mn ≤ 5.5 % and can contain one or more of the following optional elements, Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, 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 50 microns to 300 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 25% 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
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 tin free non-oriented electrical steel sheet having a thickness from 0.2mm to 0.8mm and having a composition comprising of the following elements 0.0001% ≤ Carbon ≤ 0.009 %,0.05% ≤ Manganese ≤ 0.2%,2.5% ≤ Silicon ≤ 3.3%,0.1% ≤ Aluminum ≤ 0.5 %,0.001% ≤ Titanium ≤ 0.1%, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09%with 3% ≤ Si+Al+Mn ≤ 4.7%, Niobium ≤ 0.1%,Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 10microns to 150 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 25% when calculated in accordance with Bertotti method.
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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 non-oriented electrical steel sheet having a thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements 0.0001% ≤ Carbon ≤ 0.007 %,0.2% ≤ Manganese ≤ 0.5%, 3% ≤ Silicon ≤ 3.5%, 0.6% ≤ Aluminum ≤ 1.1 %, 0.001% ≤ Titanium ≤ 0.1%, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09% with 4% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements Niobium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, Tin ≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non- recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 100 microns to 250 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 30% when calculated in accordance with Bertotti method.
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
44.
A NON-ORIENTED ELECTRICAL STEEL AND A METHOD OF MANUFACTURING NON-ORIENTED ELECTRICAL STEEL THEREOF
The invention deals with a non-oriented electrical steel sheet having a thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.09% ≤ Manganese ≤ 0.22%, 2.7% ≤ Silicon ≤ 3.1%,0.3% ≤ Aluminum ≤ 0.5 %, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006%, Nitrogen ≤ 0.09% with 3.2% ≤ Si+Al+Mn ≤ 3.8% and can contain one or more of the following optional elements Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%,Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,Tin≤ 0.2%,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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 10 microns to 50 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 25% when calculated in accordance with Bertotti method.
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
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 thickness from 0.4mm to 0.6mm and having a composition comprising the following elements, expressed in percentage by weight, 0.0001% ≤ Carbon ≤ 0.007 %, 0.2% ≤ Manganese ≤ 0.4%, 1% ≤ Silicon ≤ 1.4%, 0.15% ≤ Aluminum ≤ 0.25 %, 0.1% ≤ Phosphorus ≤ 0.25 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09%, with 0.2% ≤ P+Sn ≤ 0.3 % and can contain one or more of the following optional elements, Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, 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 70 microns to 150 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 35% when calculated in accordance with Bertotti method.
C22C 38/20 - Ferrous alloys, e.g. steel alloys containing chromium 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
A non-oriented electrical steel sheet having a thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements 0.0001% ≤ Carbon ≤ 0.007 %,0.15% ≤ Manganese ≤ 0.3%,3% ≤ Silicon ≤ 3.5%, 0.9% ≤ Aluminum ≤ 1.4 %, 0.001%≤ Nickel ≤ 0.1%, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09%, with 4% ≤ Si+Al+Mn ≤ 5.5%,Titanium ≤ 0.1%, Niobium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, Tin≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 120 microns to 250 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 25% when calculated in accordance with Bertotti method.
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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 thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.09% ≤ Manganese ≤ 0.22%, 2.7% ≤ Silicon ≤ 3.1%,0.3% ≤ Aluminum ≤ 0.5 %, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006%, Nitrogen ≤ 0.09% with 3.2% ≤ Si+Al+Mn ≤ 3.8% and can contain one or more of the following optional elements Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%,Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,Tin≤ 0.2%,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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 10 microns to 50 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 25% 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
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 non-oriented electrical steel sheet having a thickness from 0.5 to 1.2 mm and having a composition comprising the following elements, 0.0001% ≤ Carbon ≤ 0.007 %, 0.2% ≤ Manganese ≤ 0.4%,1% ≤ Silicon ≤ 1.4%, 0.12% ≤ Aluminum ≤ 0.25 %,0.1 % ≤ Phosphorus ≤ 0.25 %,0.08% ≤ Tin ≤ 0.2%,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09%,with 0.2% ≤ P+Sn ≤ 0.3%,Niobium ≤ 0.1%,Titanium ≤ 0.1%,Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,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 80 microns to 200microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 45% when calculated in accordance with Bertotti method.
C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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 non-oriented electrical steel sheet having a thickness from 0.5mm to 1.2mm and having a composition comprising of the following elements 0.0001% ≤ Carbon ≤ 0.007 %, 0.05% ≤ Manganese ≤ 0.3%, 3% ≤ Silicon ≤ 3.5%, 0.8% ≤ Aluminum ≤ 1.2 %, 0.001% ≤ Titanium ≤ 0.1%, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09%, with 4% ≤ Si+Al+Mn ≤ 5.5%, Niobium ≤ 0.1%, Vanadium ≤ 0.1%,Chromium ≤ 1%, Molybdenum ≤ 0.5%m Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%,Lead ≤ 0.2%, Tin≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 10 microns to 100 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 36% when calculated in accordance with 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
A non-oriented electrical steel sheet having a thickness from 0.3mm to 0.6mm and having a composition comprising the following elements 0.0001% ≤ Carbon ≤ 0.007 %,0.1% ≤ Manganese ≤ 0.5%,1% ≤ Silicon ≤ 1.6%,0.1% ≤ Aluminum ≤ 0.5%,Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09%,Tin ≤ 0.15%,Niobium ≤ 0.1%,Titanium ≤ 0.1%,Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,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 10 microns to 90 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 25% when calculated in accordance with Bertotti method. No figure.
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
A tin free non-oriented electrical steel sheet having a thickness from 0.2mm to 0.4mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.09% ≤ Manganese ≤ 0.3%,3% ≤ Silicon ≤ 3.5%,0.5% ≤ Aluminum ≤ 1.2 %, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09% with 3.7% ≤ Si+Al+Mn ≤ 4.7%, Niobium ≤ 0.1%,Titanium ≤ 0.1%,Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 60microns to 150 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 15% 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
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 non-oriented electrical steel sheet having a thickness from 0.2mm to 0.4mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.2% ≤ Manganese ≤ 0.5%,3% ≤ Silicon ≤ 3.6%,0.7% ≤ Aluminum ≤ 0.95 %,0.001%≤ Nickel ≤ 0.1%,Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09% with 4% ≤ Si+Al+Mn ≤ 5.5%, Titanium ≤ 0.1%,Niobium ≤ 0.1%,Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,Tin≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 95 microns to 250 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 15% when calculated in accordance with Bertotti method.
C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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 for butt-welding two sub-blanks of steel (10) comprising the steps of: -providing two sub-blanks (10) made of press-hardening steel grades, having a thickness of respectively t1 and t2 expressed in mm, and coated on both sides with an aluminum based metallic coating (2) comprising an intermetallic layer (21) in contact with a substrate (1) and a metallic layer (22) above it. -preparing said two sub-blanks (10) by removing at least said metallic layer (22) of said aluminum-based coating (2) on the top side of said weld edges (11) of each of said sub-blanks (10) to form removal zones (23) and by removing at least said metallic layer (22) of said aluminum-based coating (2) on the bottom side of one weld edge (11) to form another removal zone (23), while leaving the full amount of said aluminum-based coating (2) on the bottom side of the other weld edge (11), -positioning said two sub-blanks (10) side by side along their respective weld edges (11). -laser welding said two sub-blanks (10) using a laser beam (31) emitted by a laser head (30) traveling at a relative speed S_welding, expressed in m/min, and simultaneously adding a filler wire (41) having a diameter D_filler_wire, which is fed out of a filler wire feeder (40) at a speed S_filler_wire, expressed in m/min, to form a melt pool generated by said laser beam (31) and thus manufacture a laser welded blank (6) having a weld seam (5).
The invention relates to a metal powder having a composition comprising the following elements, expressed in content by weight: 9% ≤ Ni ≤ 13%, 17% ≤ Cr ≤ 19%, 0.04% ≤ C ≤ 0.1%, 8 x C ≤ Nb ≤ 1%, Si ≤ 0.75%, P ≤ 0.025%, S ≤ 0.03%, 0.02% ≤ N ≤ 0.2%, With Si/(C+N) <6.0, and optionally containing: Mn ≤ 2%, Cu ≤ 0.75%, Mo ≤ 0.75%, and/or one or more elements chosen among Ti, V, W, Zr, Ce, Y in a cumulated amount of up to 2.0 wt.%, the balance being iron and unavoidable impurities resulting from the elaboration.
Method for butt-welding two sub-blanks of steel (10) comprising the steps of: -providing two sub-blanks (10) made of press-hardening steel grades, having a thickness of respectively t1 and t2 expressed in mm, and coated on both sides with an aluminum based metallic coating (2) comprising an intermetallic layer (21) in contact with a substrate (1) and a metallic layer (22) above it. -preparing said two sub-blanks (10) by removing at least said metallic layer (22) of said aluminum-based coating (2) on the top side of said weld edges (11) of each of said sub-blanks (10) to form removal zones (23) and by removing at least said metallic layer (22) of said aluminum-based coating (2) on the bottom side of one weld edge (11) to form another removal zone (23), while leaving the full amount of said aluminum-based coating (2) on the bottom side of the other weld edge (11), -positioning said two sub-blanks (10) side by side along their respective weld edges (11). -laser welding said two sub-blanks (10) using a laser beam (31) emitted by a laser head (30) traveling at a relative speed S_welding, expressed in m/min, and simultaneously adding a filler wire (41) having a diameter D_filler_wire, which is fed out of a filler wire feeder (40) at a speed S_filler_wire, expressed in m/min, to form a melt pool generated by said laser beam (31) and thus manufacture a laser welded blank (6) having a weld seam (5)
A cold rolled and heat treated steel sheet including of the following elements 0.2%≤C≤0.35%; 0.2%≤Mn≤1.2%; 0.1%≤Si≤0.9%; 0%≤Al≤0.1%; 0.2%≤Cr≤0.8%; 0.01%≤Nb≤0.1%; 0.1%≤Ni≤0.9%; 0.1%≤Mo≤0.9% 0.01%≤Ti≤0.1%; 0%≤P≤0.02%; 0%≤S≤0.03%; 0%≤N≤0.09%; 0.0001%≤B≤0.010%; 0%≤V≤0.1%; 0%≤Cu≤2%; 0%≤Ca≤0.005%; 0%≤Ce≤0.1%; 0%≤Mg≤0.05%; 0%≤Zr≤0.05%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel including, by area percentage, at least 75% of tempered martensite, 0% to 10% Fresh Martensite, 3 to 20% of Ferrite and 0 to 5% Bainite.
The invention deals with a non-oriented electrical steel sheet having a thickness from 0.3mm to 0.6mm and having a composition comprising the following elements, expressed in percentage by weight, 0.0001 % ≤ Carbon ≤ 0.007 %, 0.2% ≤ Manganese ≤ 0.5%, 1.6% ≤ Silicon ≤ 2%, 0.2% ≤ Aluminum ≤ 0.5 %, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09% and can contain one or more of the following optional elements, Tin ≤ 0.15%, Niobium ≤ 0.1%, Titanium ≤ 0.1 %, Vanadium ≤ 0.1 %, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1 %, Cobalt ≤ 1 %, Arsenic ≤ 0.05%, Calcium ≤ 0.01 %, Copper ≤ 1 %, Nickel ≤ 1 %, Boron ≤ 0.05%, Lead ≤ 0.2%, 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 10 microns to 90 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 25% 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 38/20 - Ferrous alloys, e.g. steel alloys containing chromium 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 thickness from 0.3mm to 0.8mm and having a composition comprising the following elements, expressed in percentage by weight, 0.0001% ≤ Carbon ≤ 0.007 %, 0.1% ≤ Manganese ≤ 0.5%, 0.1% ≤ Silicon ≤ 0.9%, 0.09% ≤ Aluminum ≤ 0.25 %, 0.1% ≤ Phosphorus ≤ 0.25 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09%, with 0.8% ≤ Si+Al+Mn ≤ 1.5 % and can contain one or more of the following optional elements, Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, 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 10 microns to 60 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 45% when calculated in accordance with Bertotti method.
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 thickness from 0.3mm to 0.6mm and having a composition comprising the following elements, expressed in percentage by weight, 0.0001% ≤ Carbon ≤ 0.007 %, 0.2% ≤ Manganese ≤ 0.5%, 1.6% ≤ Silicon ≤ 2%, 0.2% ≤ Aluminum ≤ 0.5 %, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09% and can contain one or more of the following optional elements, Tin ≤ 0.15%, Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, 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 10 microns to 90 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 25% when calculated in accordance with Bertotti method.
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
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 thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.09% ≤ Manganese ≤ 0.22%, 2.7% ≤ Silicon ≤ 3.1%,0.3% ≤ Aluminum ≤ 0.5 %, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006%, Nitrogen ≤ 0.09% with 3.2% ≤ Si+Al+Mn ≤ 3.8% and can contain one or more of the following optional elements Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%,Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,Tin≤ 0.2%,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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 10 microns to 50 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 25% 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 38/40 - 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
A non-oriented electrical steel sheet having a thickness from 0.2 to 0.4 mm and having a composition comprising the following elements, 0.0001% ≤ Carbon ≤ 0.007 %, 0.2% ≤ Manganese ≤ 0.4%, 1% ≤ Silicon ≤ 1.4%, 0.1% ≤ Aluminum ≤ 0.3 %, 0.1 % ≤ Phosphorus ≤ 0.25 %, 0.08% ≤ Tin ≤ 0.2%, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09%, with 0.2% ≤ P+Sn ≤ 0.3%, Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten ≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, 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 80 microns to 200 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz, of less than 25% when calculated in accordance with Bertotti method.
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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 thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.09% ≤ Manganese ≤ 0.22%, 2.7% ≤ Silicon ≤ 3.1%,0.3% ≤ Aluminum ≤ 0.5 %, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006%, Nitrogen ≤ 0.09% with 3.2% ≤ Si+Al+Mn ≤ 3.8% and can contain one or more of the following optional elements Niobium ≤ 0.1%, Titanium ≤ 0.1%, Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%,Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,Tin≤ 0.2%,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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 10 microns to 50 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 25% when calculated in accordance with Bertotti method.
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
A non-oriented electrical steel sheet having a thickness from 0.2mm to 0.4mm and having a composition comprising of the following elements 0.0001 % ≤ Carbon ≤ 0.007 %,0.05% ≤ Manganese ≤ 0.2%, 2.5% ≤ Silicon ≤ 3.1 %, 0.2% ≤ Aluminum ≤ 0.6 %, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09% with 3.2% ≤ Si+AI+Mn ≤ 3.8%, Niobium ≤ 0.1 %, Titanium ≤ 0.1 %, Vanadium ≤ 0.1 %, Chromium ≤ 1%, Molybdenum ≤ 0.5%,Tungsten≤ 0.1 %, Cobalt ≤ 1 %, Arsenic ≤ 0.05%, Calcium ≤ 0.01 %, Copper ≤ 1 %, Nickel ≤ 1 %, Boron ≤ 0.05%, Lead ≤ 0.2%,Tin≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 30 microns to 80 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 15% 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
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 tin free non-oriented electrical steel sheet having a thickness from 0.5mm to 1.2mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.09% ≤ Manganese ≤ 0.3%,3% ≤ Silicon ≤ 3.5%,0.4% ≤ Aluminum ≤ 1.2 %, Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09% with 3.7% ≤ Si+Al+Mn ≤ 4.7%,Niobium ≤ 0.1%,Titanium ≤ 0.1%,Vanadium ≤ 0.1%, Chromium ≤ 1%,Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 90microns to 200 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 35% when calculated in accordance with Bertotti method.
C22C 38/16 - Ferrous alloys, e.g. steel alloys containing copper
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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 non-oriented electrical steel sheet having a thickness from 0.5mm to 1.2mm and having a composition comprising the following elements 0.0001% ≤ Carbon ≤ 0.007 %,0.1% ≤ Manganese ≤ 0.6%,0.9% ≤ Silicon ≤ 1.7%,0.01% ≤ Aluminum ≤ 0.1 %,Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09%,Tin ≤ 0.15%,Niobium ≤ 0.1%,Titanium ≤ 0.1%,Vanadium ≤ 0.1%,Chromium ≤ 1%,Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Nickel ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,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 5 microns to 50 microns and having a percentage of eddy current losses in total iron losses measured at 1.5T and 400Hz measured according to 60404-2 standard of less than 35% when calculated in accordance with Bertotti method.
C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
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
A non-oriented electrical steel sheet having a thickness from 0.4mm to 0.7mm and having a composition comprising of the following elements 0.0001% ≤ Carbon ≤ 0.007 %,0.2% ≤ Manganese ≤ 0.5%, 3% ≤ Silicon ≤ 3.5%, 0.6% ≤ Aluminum ≤ 1.1 %, 0.001% ≤ Titanium ≤ 0.1%, Phosphorus ≤ 0.15 %, Sulfur ≤ 0.006 %, Nitrogen ≤ 0.09% with 4% ≤ Si+Al+Mn ≤ 5.5% and can contain one or more of the following optional elements Niobium ≤ 0.1%, Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%, Tungsten≤ 0.1%, Cobalt ≤ 1%, Arsenic ≤ 0.05%, Calcium ≤ 0.01%, Copper ≤ 1%, Nickel ≤ 1%, Boron ≤ 0.05%, Lead ≤ 0.2%, Tin≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non- recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 100 microns to 250 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 30% when calculated in accordance with 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
A non-oriented electrical steel sheet having a thickness from 0.2mm to 0.4mm and having a composition comprising of the following elements, 0.0001% ≤ Carbon ≤ 0.007 %,0.2% ≤ Manganese ≤ 0.5%,3% ≤ Silicon ≤ 3.6%,0.5% ≤ Aluminum ≤ 0.96 %,0.001%≤ Nickel ≤ 0.1%,Phosphorus ≤ 0.15 %,Sulfur ≤ 0.006 %,Nitrogen ≤ 0.09% with 4% ≤ Si+Al+Mn ≤ 5.5%, Titanium ≤ 0.1%,Niobium ≤ 0.1%,Vanadium ≤ 0.1%, Chromium ≤ 1%, Molybdenum ≤ 0.5%,Tungsten≤ 0.1%,Cobalt ≤ 1%,Arsenic ≤ 0.05%,Calcium ≤ 0.01%,Copper ≤ 1%,Boron ≤ 0.05%,Lead ≤ 0.2%,Tin≤ 0.2%, 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, 70% to 100% recrystallized microstructure, 0% to 30% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 95 microns to 250 microns and having a percentage of eddy current losses in total iron losses, measured at 1.5 T and 400 Hz according to standard 60404-2, of less than 15% when calculated in accordance with 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
A high strength steel for forging mechanical parts comprising of the following elements 0.1 % ≤ C ≤ 0.3 %, 3 % ≤ Mn ≤ 9 %, 0.8% ≤ Si ≤2.5 %, 0.001 % ≤ Al ≤ 2.5 %, 0% ≤ S ≤ 0.03%, 0% ≤ P ≤ 0.03%, 0% ≤ N ≤ 0.025%, Ti ≤ 0.1%, 0.0001% ≤ B ≤ 0.01%, Cr ≤ 0.5 %, Nb ≤ 0.1%, V≤ 0.15%, Ni ≤ 1%, 0% ≤ Cu ≤ 1%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel comprising, by area percentage, at least 50% of Ferrite, 20% to 50% of Residual Austenite, with an optional presence of tempered martensite from 0% to 5%.
The invention concerns a method for determining a temperature of a steel wire (12) during its cooling by air on a conveyor having a central axis (18) and two lateral edges (20) extending in a conveying direction (X), the steel wire (12) being wound in successive loops (22) comprising each at least one central portion (24) near the central axis (18) and at least one edge portion (26) near a respective lateral edge (20), comprising: - estimating a wire temperature gradient with respect to a radial position within the wire, as a function of a total heat transfer coefficient depending on a convective heat transfer coefficient associated to air convection and on a radiative heat transfer coefficient associated to radiation; and for at least one central portion (24), the radiative heat transfer coefficient being calculated according to a predefined center effective emissivity; - computing the temperature of the steel wire (12) according to the wire temperature gradient; for at least one edge portion (26), the radiative heat transfer coefficient is calculated according to an edge effective emissivity distinct and independent from the center effective emissivity.
The invention relates to a metal powder having a composition comprising the following elements, expressed in content by weight: 9% ≤ Ni ≤ 13%, 17% ≤ Cr ≤ 19%, 0.04% ≤ C ≤ 0.1%, 8 x C ≤ Nb ≤ 1%, Si ≤ 0.75%, P ≤ 0.025%, S ≤ 0.03%, 0.02% ≤ N ≤ 0.2%, With Si/(C+N) <6.0, and optionally containing: Mn ≤ 2%, Cu ≤ 0.75%, Mo ≤ 0.75%, and/or one or more elements chosen among Ti, V, W, Zr, Ce, Y in a cumulated amount of up to 2.0 wt.%, the balance being iron and unavoidable impurities resulting from the elaboration.
A method for producing a part includes providing a first and a second precoated sheet (1,2), butt welding the first and second precoated sheets (1) to obtain a blank (15), and heating the blank (15) to a heat treatment temperature at least 10° C. lower than the full austenitization temperature of the weld joint (22) and at least 15° C. higher than a minimum temperature Tmin:
A method for producing a part includes providing a first and a second precoated sheet (1,2), butt welding the first and second precoated sheets (1) to obtain a blank (15), and heating the blank (15) to a heat treatment temperature at least 10° C. lower than the full austenitization temperature of the weld joint (22) and at least 15° C. higher than a minimum temperature Tmin:
T
min
(
°
C
.
)
=
A
C
3
(
W
J
)
-
α
IC
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0
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A
c
3
(
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J
)
-
6
7
3
-
40
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Al
)
,
where
Ac3(WJ) is the full austenitization temperature of the weld joint (22)
A method for producing a part includes providing a first and a second precoated sheet (1,2), butt welding the first and second precoated sheets (1) to obtain a blank (15), and heating the blank (15) to a heat treatment temperature at least 10° C. lower than the full austenitization temperature of the weld joint (22) and at least 15° C. higher than a minimum temperature Tmin:
T
min
(
°
C
.
)
=
A
C
3
(
W
J
)
-
α
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(
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J
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6
7
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-
40
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Al
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,
where
Ac3(WJ) is the full austenitization temperature of the weld joint (22)
α
IC
max
=
(
1
-
(
1
+
ρ
)
(
max
(
1
;
ρ
)
T
s
2
-
3
5
0
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1
-
β
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ρ
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2
+
T
s
1
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β
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+
7
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1
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,
where
Ts1 and Ts2 are the ultimate tensile strengths of the strongest and the weakest substrate after press-hardening
CFW is the carbon content of the filler material
β is the proportion of filler material
ρ is the ratio between the thicknesses of the weakest and the strongest substrate The method also includes holding the blank (15) at the heat treatment temperature for a time between 2 and 10 minutes; and press-forming the blank (15) into a part and cooling.
B62B 3/02 - Hand carts having more than one axis carrying transport wheelsSteering devices thereforEquipment therefor involving parts being adjustable, collapsible, attachable, detachable, or convertible
B62B 3/10 - Hand carts having more than one axis carrying transport wheelsSteering devices thereforEquipment therefor characterised by supports specially adapted to objects of definite shape
B62B 3/12 - Hand carts having more than one axis carrying transport wheelsSteering devices thereforEquipment therefor characterised by three-wheeled construction
C21D 1/18 - HardeningQuenching with or without subsequent tempering
The front-end assembly (1) of a vehicle front body structure (8) for a vehicle comprises at least a front rail (2), a shotgun (4) and an apron (6), said front end assembly comprising: - a main formed metal sheet (34), shaped to comprise an apron portion (40), a front rail portion (42) and a shotgun portion (44), - a first additional formed metal sheet (36) attached to the front rail portion (42) of the main formed metal sheet (34) to form the front rail (2), and - a second additional formed metal sheet (38) attached to the shotgun portion (44) of the main formed metal sheet (34) to form the shotgun (4).
A method for producing a welded steel blank (1) includes providing two precoated sheets (2), each comprising a steel substrate (3) having a precoating (5) on each of its two main faces (4), each sheet (2) comprising, on each main face (4), at a weld edge (14), a removal zone (18) in which the precoating (5) is removed over a removal fraction; and butt welding the sheets (2) using a filler wire (20) so as to create a weld joint (22) having an aluminum content AlWJ comprised between 0.1 wt. % and 1.2 wt. %. The composition of the wire (20) and the proportion of wire (20) added is such that the weld joint (22) has: (a) a quenching factor FTWJ such that FTWJ−0.96FTBM≥0, (b) a nickel content NiWJ≤14−3.4×AlWJ and a chromium content CrWJ≤5−2×AlWJ, where AlWJ is the aluminum content of the weld joint (22).
The invention relates to a method for filtering a coarse particle slurry to obtain a filtered coarse cake, the coarse particle slurry having a particle size distribution wherein at least 90% of the particles of the coarse particle slurry have a size larger than 25 pm. The method is carried out by a filter device (14) comprising a filter pan (26), and comprises, for each filter cell (48) of the filter pan (26), a treatment cycle comprising: - discharging the coarse particle slurry on top of the filter cell (48); - applying a pressure difference between an inner volume and the exterior of the filter cell (48), so that a liquid of the coarse particle slurry is led towards the inner volume of the filter cell (48) and so that the filtered coarse cake is obtained on top of the medium filter.
B01D 33/19 - Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables the table surface being divided in successively tilted sectors or cells, e.g. for discharging the filter cake
C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
77.
METHOD OF PRODUCING STEEL WITH LOW NITROGEN CONTENT USING AN EAF
Method of producing steel using an Electrical Arc Furnace (EAF), the method comprising: (a) melting a metal load (L) in the EAF and generating liquid steel (LS); (c) tapping the liquid steel (LS) from the EAF; and (d) performing secondary metallurgy on the liquid steel (LS) in at least one secondary metallurgy reactor to adjust the chemical composition of the liquid steel (LS), wherein the method comprises adding a first slag compound (SC1) with nitrogen affinity in the liquid steel (LS) during tapping of the liquid steel (LS) from the EAF and creating a ladle slag (S2).
Front-end assembly of a vehicle front body structure The front-end assembly (1) of a vehicle front body structure (8) for a vehicle comprises at least a front rail (2), a shotgun (4) and an apron (6), said front end assembly comprising: - a main formed metal sheet (34), shaped to comprise an apron portion (40), a front rail portion (42) and a shotgun portion (44), - a first additional formed metal sheet (36) attached to the front rail portion (42) of the main formed metal sheet (34) to form the front rail (2), and - a second additional formed metal sheet (38) attached to the shotgun portion (44) of the main formed metal sheet (34) to form the shotgun (4).
Method of producing steel with low nitrogen content using an EAF Method of producing steel using an Electrical Arc Furnace (EAF), the method comprising: (a) melting a metal load (L) in the EAF and generating liquid steel (LS); (c) tapping the liquid steel (LS) from the EAF; and (d) performing secondary metallurgy on the liquid steel (LS) in at least one secondary metallurgy reactor to adjust the chemical composition of the liquid steel (LS), wherein the method comprises adding a first slag compound (SC1) with nitrogen affinity in the liquid steel (LS) during tapping of the liquid steel (LS) from the EAF and creating a ladle slag (S2).
The invention relates to a method for heating a rolled steel strip that comprises the following steps: - continuously driving a rolled steel strip inside a furnace, - introducing an entry gas flow into a device for heating gas that comprises: • a pipe, allowing gas to flow inside of it, • an insert located inside said pipe, being electrically conductive, • an inductor located close to said pipe, - feeding energy into said insert using said inductor, so that said energy fed into the insert is transferred to the gas inside said device for heating gas, to heat said gas to a temperature from 500°C to 1500°C, - circulating said heated gas into a radiant tube located inside the furnace, so that said heated gas transfers heat to said radiant tube, making said radiant tube release the transferred heat inside the furnace to heat said rolled steel strip.
F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
F27B 9/30 - Details, accessories or equipment specially adapted for furnaces of these types
The invention relates to a method for heating a rolled steel strip that comprises the following steps: - continuously feeding a rolled steel strip to be heated inside a furnace, - introducing an entry gas flow into at least one device for heating gas, said device for heating gas being connected to said furnace and comprising: • a pipe allowing gas to flow inside of it, • an insert located inside said pipe, said insert being electrically conductive, • an inductor located in the vicinity of said pipe, - feeding energy into said insert using said inductor of said device for heating gas so that said energy fed into the insert is transferred to the gas introduced into said device for heating gas, to heat said gas to a temperature from 500°C to 1500°C, - releasing said heated gas into the furnace so that said rolled steel strip is heated.
C21D 9/60 - Continuous furnaces for strip or wire with induction heating
F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
F27B 9/30 - Details, accessories or equipment specially adapted for furnaces of these types
A press hardened coated steel part consisting of: a hardened steel substrate (1) for hot stamping comprising, a coating layer having a thickness from 25 to 55 µm and comprising successively: an interdiffusion layer 21 in contact with the steel substrate and having a thickness of from 3 to 45 µm, said interdiffusion layer comprising more than 60 wt. % Fe, Si from 0.1 to 11.0 wt. %, Cu from 150 to 3000 wt. ppm, unavoidable impurities up to 1.0 wt.%, the remainder being Al, an alloyed layer (22) comprising Al, Fe, Si, Cu, wherein said alloyed coating layer consists of a binary phase (221) and a ternary phase (222), wherein said binary phase comprises from 35 to 60 wt. % Fe, from 0.1 to 5.0 wt. % Si, unavoidable impurities up to 1.0 wt. %, at least 190 wt. ppm of Cu, the balance being aluminium, and wherein said ternary phase comprises from 20 to 50 wt. % Al, from 6.0 to 20.0 weight % Si, unavoidable impurities up to 1.0 wt. %, at least 100 ppm of Cu, the balance being Fe, and wherein, in the alloyed layer, Cu content in the binary phase is at least 90 ppm more than in the ternary phase.
A press hardened coated steel part consisting of: a hardened steel substrate (1) for hot stamping comprising, a coating layer having a thickness from 25 to 55 µm and comprising successively: an interdiffusion layer 21 in contact with the steel substrate and having a thickness of from 3 to 45 µm, said interdiffusion layer comprising more than 60 wt. % Fe, Si from 0.1 to 11.0 wt. %, Cu from 150 to 3000 wt. ppm, unavoidable impurities up to 1.0 wt.%, the remainder being Al, an alloyed layer (22) comprising Al, Fe, Si, Cu, wherein said alloyed coating layer consists of a binary phase (221) and a ternary phase (222), wherein said binary phase comprises from 35 to 60 wt. % Fe, from 0.1 to 5.0 wt. % Si, unavoidable impurities up to 1.0 wt. %, at least 190 wt. ppm of Cu, the balance being aluminium, and wherein said ternary phase comprises from 20 to 50 wt. % Al, from 6.0 to 20.0 weight % Si, unavoidable impurities up to 1.0 wt. %, at least 100 ppm of Cu, the balance being Fe, and wherein, in the alloyed layer, Cu content in the binary phase is at least 90 ppm more than in the ternary phase.
The invention relates to a method for heating a steel coil that comprises the following steps: - putting at least one steel coil to be heated inside a furnace, - introducing an entry gas flow into a device for heating gas, being connected to said furnace and comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, being electrically conductive, o an inductor located in the vicinity of said pipe, - feeding energy into said insert using said inductor of said device for heating gas so that said energy fed into the insert is transferred to the gas introduced into said device for heating gas, to heat said gas to a temperature from 500°C to 1500°C, - releasing said heated gas into the furnace so that said steel coil is heated, - removing the heated steel coil from the furnace.
The invention relates to a method for heating a steel semi-product that comprises the following steps: - putting a steel semi-product to be heated inside a furnace, - introducing an entry gas flow into a device for heating gas, being connected to said furnace and comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, being electrically conductive, o an inductor located in the vicinity of said pipe, - feeding energy into said insert using said inductor of said device for heating gas so that said energy fed into the insert is transferred to the gas introduced into said device for heating gas, to heat said gas to a temperature from 450°C to 1500°C, - releasing said heated gas into the furnace so that said steel semi-product is heated, - removing the heated steel semi-product from the furnace.
The invention relates to a method to produce hot metal (12) in a blast furnace (1) wherein a natural gas (18) is subjected to a cracking step in a cracking unit (6) to produce a cracked gaseous stream (31), said cracked gaseous stream (31) comprising at least 20% in volume of hydrogen, less than 80% in volume of unreacted natural gas and a suspension of solid carbon black, and being injected into the blast furnace at the tuyere level (2), a hot blast (13) being also injected at said tuyere level (2). The invention also relates to a plant allowing to implement such a method.
Method and equipment for the treatment of metal scrap The invention relates to a method for the treatment of metal scrap comprising the following steps: - providing a device (100) comprising a friction chamber (102), the friction chamber (102) having an inlet (106) and an eccentric wheel (120) rotating in the friction chamber (102) about a horizontal axis (D), - supplying metal scrap to the inlet (106) of the friction chamber (102), - processing the metal scrap in the friction chamber (102), by rotation of the eccentric wheel (120), the rotating eccentric wheel (120) applying friction forces to the metal scrap, and - discharging the processed metal scrap. The invention further relates to an associated equipment.
The invention relates to a method for the treatment of metal scrap comprising the following steps: - providing a device (100) comprising a friction chamber (102), the friction chamber (102) having an inlet (106) and an eccentric wheel (120) rotating in the friction chamber (102) about a horizontal axis (D), - supplying metal scrap to the inlet (106) of the friction chamber (102), - processing the metal scrap in the friction chamber (102), by rotation of the eccentric wheel (120), the rotating eccentric wheel (120) applying friction forces to the metal scrap, and - discharging the processed metal scrap. The invention further relates to an associated equipment.
A composite floor deck member including a metallic tray, an insulation material positioned in the metallic tray and a wood slab, wherein the metallic tray includes a first flange including a first end wing extending parallel to plane P and inwards, and a second flange including a second end wing extending parallel to plane P and inwards, wherein the wood slab rests on the first end wing and the second end wing and is stitched to them, wherein the wood slab is further stitched to at least a first metallic profile resting against the bottom side of the wood slab, extending substantially along the longitudinal axis X and having longitudinal extremities anchored to end caps substantially closing the gap between the metallic tray and the wood slab at the first and second transverse edges of the central part of the metallic tray.
A metal powder for additive manufacturing having a composition including the following elements, expressed in content by weight 15%≤Mn≤35%, 6%≤Al≤15%, 0.5%≤C≤1.8%, 0.4%≤Ti≤4.5%, 0≤Si≤3.5%, P≤0.013%, S≤0.015%, N≤0.100%, and optionally containing Ni≤8.5 wt. % and/or Cr≤2.5 wt. % and/or B≤0.1 wt. % and/or one or more elements chosen among Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0 wt. %, the balance being iron and unavoidable impurities resulting from the elaboration. It also deals with a process for manufacturing such powder and for manufacturing a printed part out of it.
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
The invention deals with a steel sheet and press hardened steel part having a composition comprising, by weight percent: C 0.05-0.3%, Mn 0.5-4%, Si 0.24-1.7%, Al 0.01 -0.1 %, Cr 0.01 - 1.0%, Ti 0.01 -0.1 %, B 0.0005-0.08%, Cu 0.05-0.4%, , , the remainder of the composition being iron and unavoidable impurities resulting from the production route. The press hardened steel part has a microstructure comprising, in surface fraction, more than 95% of martensite, the rest being optional bainite and retained austenite.
94.
HIGH TOUGHNESS PRESS-HARDENED STEEL PART AND METHOD OF MANUFACTURING THE SAME
The invention deals with a steel sheet and press hardened steel part having a composition comprising, by weight percent: C 0.05-0.4%, Mn 0.5-4%, Si 0.1-1.3%, Al 0.01-0.1%, Cr 0.01-1.0%, Ti 0.01-0.1%, B 0.0005-0.08%, Cu 0.05-0.4%, Sn 0.002- , , , the remainder of the composition being iron and unavoidable impurities resulting from the smelting process and depending on the process route. The press hardened steel part has a microstructure comprising, in surface fraction, more than 95% of martensite, the rest being optional bainite and retained austenite.
C22C 38/38 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
95.
METHOD FOR PRODUCING A STEEL SHEET HAVING EXCELLENT PROCESSABILITY BEFORE HOT FORMING, STEEL SHEET, PROCESS TO MANUFACTURE A HOT STAMPED PART AND HOT STAMPED PART
Steel sheet suitable for a multistep hot stamping process and associated manufacturing process, said steel sheet having a composition comprising, by weight percent: C: 0.13 - 0.4 %, Mn: 0.4 - 4.2 %, Si: , %, %, %, %, %, %, , , , , , , , , wherein Q is less than 20, said factor Q being defined as (the elements are expressed in weight percent): said steel sheet having a microstructure comprising, in surface fraction, from 60% to 100% of recrystallized ferrite, less than 40% of the sum of martensite, bainite and carbides and less than 5% of non-recrystallized ferrite.
A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm, comprising providing a semi-product having a composition comprising: , , , , , , , , , , , , Mo , W 0.30%, Ca ≤ 0.006%, hot-rolling with a final rolling temperature FRT, to obtain a hot-rolled steel product having a thickness between 1.8 mm and 5 mm, then cooling down to a coiling temperature satisfying: with , being expressed in degrees Celsius and fy designating the austenite fraction just before the coiling, and coiling to obtain a hot-rolled steel substrate, pickling and coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness comprised between 10 and 33 µm, on each side of the hot-rolled steel sheet.
Side structure (1) for a motor vehicle (3) comprising an inner and outer frame (11, 13) each forming a closed ring and having two openings corresponding to the front and rear doors (8, 10), wherein said inner and outer frames (11, 13) are each formed by hot stamping respectively an inner and an outer frame blank (111, 113), each being a single tailor welded blank made of steel and wherein said inner and outer frames (11,13) are assembled to form a hollow volume (7) between them.
B62D 65/06 - Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being doors, windows, openable roofs, lids, bonnets, or weather strips or seals therefor
A metal powder for additive manufacturing having a composition including the following elements, expressed in content by weight 15%≤Mn≤35%, 6%≤Al≤15%, 0.5%≤C≤1.8%, 1.6%≤Si≤3.5%, P≤0.013%, S≤0.015%, N≤0.100%, and optionally containing Ni≤8.5 wt. % and/or Cr≤2.5 wt. % and/or B≤0.1 wt. % and/or one or more elements chosen among Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0 wt. %, the balance being iron and unavoidable impurities resulting from the elaboration. It also deals with a process for manufacturing such powder and for manufacturing a printed part out of it.
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
Rear floor panel for an automotive vehicle made from a single metallic blank and including reinforced rear and front side portions compared to the center rear and front portions. Rear structural assembly including a rear floor panel assembled onto a rear underfloor structure, including a right and left side member linked together by at least one cross member.
B62D 21/15 - Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
B62D 25/16 - Mud-guards or wingsWheel cover panels
B62D 27/02 - Connections between superstructure sub-units rigid
B62D 29/00 - Superstructures characterised by material thereof
100.
NON-ORIENTED ELECTRICAL STEEL AND A METHOD OF MANUFACTURING NON-ORIENTED ELECTRICAL STEEL THEREOF
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 various optional elements. The remainder composition being iron and unavoidable impurities caused by processing, the microstructure made of ferrite and has 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 35% when calculated in accordance of Bertotti method.
