The invention relates to a method for manufacturing profiled metal strips (1, 1′), in which a metal strip (1, 1′) with predefinable material thickness consisting, in particular, of stainless steel is wound up on a coil (4) and guided through a rolling stand (W1-W4) containing several rolls (2, 3, 2′, 3′), wherein at least the rolls (2, 3) that effectively interact with the metal strip (1, 1′) are provided with a predefinable topography (8, 9), by means of which profiles with profile depths >250 μm can be produced on both sides of the metal strip (1, 1′) depending on the geometry of the topography (8, 9) of the rolls (2, 3), and wherein the metal strip (1, 1′) is subsequent to its profiling wound up on a coil (5) and, if so required, subjected to a thermal post-treatment.
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
B21B 39/02 - Feeding or supporting workBraking or tensioning arrangements
B21D 13/04 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form by rolling
B21D 13/10 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
2.
Flat steel product with high reflectivity, flat steel product and mirror element for solar concentrators
A method for producing a flat steel product with high reflectivity, in which at least one surface has an arithmetic mean roughness Ra of less than 0.03 μm includes providing a flat steel product, at least one surface of which has an arithmetic mean roughness Ra of less than 2.5 μm. The flat steel product is cold rolled in a plurality of rolling passes. Also a flat steel product with high reflectivity in the finished re-rolled state on at least one of its surface has a low arithmetic mean roughness, a high gloss, and a high directed reflection. A solar concentrator is produced from such a flat steel product.
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
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
B21B 1/28 - 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 in a continuous process by cold-rolling
3.
Method and device for producing shaped sheet metal parts at a low temperature
The invention relates to a method for producing a shaped sheet-metal part from a panel or a semifinished part made of a material consisting of steel with at least 60 wt. % Fe and a residual austenite content of at least 5%, in which the panel or the semifinished part is at least partially cooled to a temperature below −20° C. before the shaping and is shaped at a temperature below −20° C. in a forming tool. The object of providing a method for producing load-compliantly configured components, which on the one hand permits industrial-scale use of low-temperature forming and is configured particularly simply, is achieved by reducing the material temperature of the panel or semifinished part to below −20° C. is carried out in a thermally regulated cooling apparatus.
The invention makes it possible to produce a flat steel product in operationally reliable manner and on an industrial scale that is protected in particularly effective manner against corrosive attacks, process in continuous feed mode, in which the flat steel product is a) provided; b) pickled; c) rinsed with an aqueous medium; d) conveyed through a flux bath that consists of an aqueous solution containing, besides unavoidable contaminants created during production and the process, 210 – 250 g/l chloride ions, and additionally 140 – 160 g/l zinc ions, 5 – 12 g/l ammonium ions or 30 – 40 g/l potassium ions and optionally in each case also 0.5 - 1.5 g/l sodium ions or calcium ions, and not more than 1 g/l magnesium ions, and traces of ions of the elements Al, Fe, Mn, Mo, Ni, P, Si, Sr and Li, wherein the density of the flux bath is at least 1.25 g/cm3 and at most 1.45 g/cm3, e) dried and warmed up to a bath entry temperature of 100 – 230 °C, f) hot dip coated in a melt bath, and g) optionally thermal, chemical or mechanical post-treated.
The invention relates to a method for producing an ultra high strength material with high elongation by work hardening an essentially nickel-free austenitic material and then subjecting the material to heat treatment in the temperature range between 200° C and < 1,100° C within a period from 10 s to 10 minutes.
The invention relates to a method for manufacturing profiled metal strips (1, 1'), in which a metal strip (1, 1') with predefinable material thickness consisting, in particular, of stainless steel is wound up on a coil (4) and guided through a rolling stand (W1-W4) containing several rolls (2, 3, 2', 3'), wherein at least the rolls (2, 3) that effectively interact with the metal strip (1, 1') are provided with a predefinable topography (8, 9), by means of which profiles with profile depths > 250 μιη can be produced on both sides of the metal strip (1, 1') depending on the geometry of the topography (8, 9) of the rolls (2, 3), and wherein the metal strip (1, 1') is subsequent to its profiling wound up on a coil (5) and, if so required, subjected to a thermal post-treatment.
The invention relates to a method for producing a flat steel product having high reflectivity, the surfaces of which have an arithmetic mean roughness Ra less than 0.03 µm, wherein flat steel product having an arithmetic mean roughness Ra < 2.5 µm on at least one surface is cold-rolled in several rolling passes, the total deformation rate achieved by means of the cold rolling is 75 - 90%, the deformation rate decreases from rolling pass to rolling pass, the rolling pressure in the first rolling pass is 200 - 800 MPa and the rolling pressure in the last rolling pass is 1000 - 4000 MPa, a rolling oil having a viscosity of 5 - 10 mm2/s at 40 °C is added during the cold rolling, the rolling speed is > 200 m/min, and the cold rolling is performed by means of a working roller having a mean roughness Ra < 0.01 µm at least in the last rolling pass. Then the cold-rolled flat steel product is annealed under a protective gas atmosphere and rerolled dry. The invention further relates to a flat steel product produced accordingly and a solar concentrator produced from such a flat steel product.
B21B 1/28 - 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 in a continuous process by cold-rolling
8.
METHOD FOR PRODUCING A CAST STRIP OF MOLTEN METAL AND CAST STRIP
The present invention pertains to a method for producing a cast strip B1-B7 of molten metal S, in which the molten metal S passes through a casting gap 4 defined by two oppositely rotating casting rollers 2, 3 and is shaped into the cast strip B1-B7, as well as to a cast strip. The inventive method makes it possible to produce a metal strip that has length sections with different thicknesses and forms an optimally suitable starting product for applications of the above-described type with reduced effort. According to the invention, this is achieved in that the cast strip B1-B7 is in the casting gap 4 provided with a different thickness in a length section L1-L8 extending in the longitudinal direction L of the cast strip B1-B7 than in a second length section L1-L8 bordering thereon.
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
9.
METHOD AND DEVICE FOR PRODUCING SHAPED SHEET METAL PARTS AT A LOW TEMPERATURE
The invention relates to a method for producing a shaped sheet metal part from a blank or a semi-finished product (1) made of a material consisting of steel having at least 60 wt.% Fe and a residual austenitic content of at least 5%, wherein the blank or the semi-finished product (1) is partially cooled to a temperature of less than -20 °C prior to the shaping and is shaped at a temperature below -20 °C in a shaping die (2). The problem of providing a method to produce components appropriately designed in terms of load, which enables a highly technical application of low-temperature shaping and is designed in a particularly simple manner, is solved in that a reduction of the material temperature of the blank or the semi-finished product (1) takes place in a cooling device (3) maintained at a temperature below -20 °C.
The invention provides a process which enables the process-stable hot dip upgrading of Ni-alloyed flat steel products (S) to be carried out cost-effectively and with efficient use of resources. For this purpose, the process comprises the following working steps: a) provision of a flat steel product (S) composed of a steel containing ≥ 2.0% by weight of Ni and ≥ 5.0% by weight of Cr; b) heating of the flat steel product (S) within 1-30 s to a hold temperature of 700-1100°C under a heating atmosphere (Atm1) containing N2 and optionally (in % by volume) 1-50% of H2, 0.1-2.0% of CO and 5.0-15.0% of CO2 and having a dew point TP1 of from -15 to +30°C; c) holding of the flat steel product (S) at the hold temperature for a hold time of 10-120 s under a hold atmosphere (Atm2) consisting of N2 and (in % by volume) 1.0-50.0% of H2 and ≤ 1.0% of O2 and having a dew point TP2 of from -30 to 0°C; d) cooling of the flat steel product (S) from the hold temperature to a strip entry temperature of 430-800°C; e) passing the flat steel product (S) through a blowpipe zone (6) in which an inert or reducing blowpipe atmosphere (Atm4) prevails and passing the flat steel product through a melt bath (B); where TP1 > TP2 > TP4.
The present invention relates to a product for fluidic applications, with at least one surface segment having a plurality of ribs in contact with a fluid flowing in a flow direction and adjacent ribs delimit between them in each case a valley and a method for production and a use of such a product. The product according to the invention can be produced economically with further improved flow properties; in that at least two ribs with the valley they respectively delimit are combined in a group, that at least two groups are present, and separated from each group arranged adjacent to it, viewed transverse to the flow direction S of the fluid, by a valley, and that the height profile of the valley differs in each case from the height profile of the valleys delimited by those ribs of the groups which are adjacent to the valley separating the groups.
A method of manufacturing a hot press-hardened component comprises the following production steps: a) providing a steel product produced at least in sections from a stainless steel comprising of the following composition (specified in % wt.) C: 0.010-1.200%, P: up to 0.1%, S: up to 0.1%, Si: 0.10-1.5%, Cr: 10.5-20.0% and optionally one or more elements from the group “Mn, Mo, Ni, Cu, N, Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, H” with the requirement Mn: 0.10-3.0%, Mo: 0.05-2.50%, Ni: 0.05-8.50%, Cu: 0.050-3.00%, N: 0.01-0.2%, Ti: up to 0.02%, Nb: up to 0.1%, B: up to 0.1%, V: up to 0.2%, Al: 0.001-1.50%, Ca: 0.0005-0.003%, As: 0.003-0.015%, Sn: 0.003-0.01%, Sb: 0.002-0.01%, Pb: up to 0.01%, Bi: up to 0.01%, H: up to 0.0025%, remainder iron and unavoidable impurities; b) heating the steel product to an austenization temperature abovethe Ac3 temperature of the stainless steel; c) hot press-hardening the heated steel product in a pressing die to form the component; and d) cooling at least one section of the component at a cooling rate that is high enough for a martensitic structure to form in each section that is rapidly cooled.
06 - Common metals and ores; objects made of metal
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Ores; common metals and their alloys, in particular steels,
stainless steels and other rustproof, acid-resistant and
heat-resistant steels, nickel, titanium, zirconium, nickel
alloys, titanium alloys and zirconium alloys; products made
from the common metals and their alloys included in this
class, in particular semi-finished products and finished
rolled steel products made from the aforesaid metals and
their alloys. Treatment of materials. Scientific and technological services and research and
design relating thereto; industrial analysis and research
services; design and development of computer hardware and
software.
14.
Stainless steel, cold strip produced from this steel, and method for producing a flat steel product from this steel
A stainless steel and a flat cold product produced therefrom, which can be easily produced in an economical manner. A steel according to the invention, in the cold-rolled state, has a microstructure with 5-15% by volume δ-ferrite and austenite as the remainder. It contains (in % by weight):
C: 0.05-0.14%, Si: 0.1-1.0%, Mn: 4.0-12.0%, Cr: >17.5-22.0%, Ni: 1.0-4.0%, Cu: 1.0-3.0%, N: 0.03-0.2%, P: max. 0.07%, S: max. 0.01%, Mo: max. 0.5%, optionally one or more elements from the group consisting of Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, and H wherein Ti: max. 0.02%, Nb: max. 0.1%, B: max. 0.004%, V: max. 0.1%, Al: 0.001-0.03%, Ca: 0.0005-0.003%, As: 0.003-0.015%, Sn: 0.003-0.01%, Pb: max. 0.01%, Bi: max. 0.01%, H: max. 0.0025%, and remainder Fe and unavoidable impurities.
A twin roll caster and a method for operating comprising two casting rolls that delimit a casting gap on its longitudinal sides; two side plates that delimit the casting gap on its narrow sides; and at least one axial actuator associated with one of the side plates and impacting the respective side plate on its rear turned away from the front sides of the casting rolls with a force axially aligned toward the casting gap pressing the side plate against the front sides of the casting rolls. An axial actuator acts on the rear side of the side plate by means of a joint provided to adjust an angular offset between the normal level relative to the effective direction of the force applied by the axial actuator to the side plate and the normal level relative to the axes of rotation of the casting rolls.
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
06 - Common metals and ores; objects made of metal
Goods & Services
Common metals and their alloys; steels; stainless steels and
other non-rusting, acid-resistant and heat-resistant steels;
rolled steel finished products, manufactured from the
aforesaid metals, alloys and steels, namely hot-rolled and
cold-rolled strips and sheets, especially lacquered.
06 - Common metals and ores; objects made of metal
Goods & Services
Steel; stainless steels and other rustproof, acid-resistant and heat-resistant steels; finished rolled steel products, made from the aforesaid metals, alloys and steels, namely hot and cold-rolled bands and sheets.
06 - Common metals and ores; objects made of metal
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Common metals and their alloys; steel; stainless steels and other rustproof, acid-resistant and heat-resistant steels; finished rolled steel products, made from the aforesaid metals, alloys and steels, namely hot and cold-rolled bands and sheets. Treatment of materials, in particular treatment of surfaces.
06 - Common metals and ores; objects made of metal
09 - Scientific and electric apparatus and instruments
Goods & Services
Unworked and semi-worked common metals, steel in the form of cast blocks, rolled or forged blocks, iron slabs, billets, rods, sheets, steel wire, tool steel, building steel, rust, acid and heat-resistant steel, special steel, magnetic steel, metals and metal alloys in the form of cast, forged, rolled or sintered shaped pieces, sheets, rods and wire, cast and sintered hard metal alloys in the form of unworked and worked work pieces, rolled, drawn and sintered welding rods, welding wires. Welding electrodes.
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
08 - Hand tools and implements
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Métaux non précieux, bruts ou mi-ouvrés, aciers sous forme
de lingots, de blocs laminés ou forgés, de brames, de
billettes, de largets, de barres, de tôles, de bandes et de
fil d'acier, également transformés à froid; aciers à outils,
aciers rapides, aciers de construction, aciers inoxydables,
stables aux acides et réfractaires, aciers durs au
manganèse, aciers spéciaux, aciers pour aimants; métaux non
précieux et leurs alliages sous forme de pièces façonnées,
coulées, forgées, laminées ou frittées, sous forme de tôles,
de barres, de fil, d'alliages de métaux durs, coulés et
frittés, sous forme de pièces brutes ou usinées; baguettes,
fils de soudure, laminés, étirés et frittés, étaux,
enclumes, rails, changements de voies, parties centrales
pour changements de voies, chaînes, maillons de chaînes,
rails de guidage et de glissage, alliages de métal fritté,
alliages compounds, aciers et fer frittés; boulons, boulons
de pistons, boulons pour dragues; matières premières pour
contacts électriques. Outils pour enlèvement par copeaux en aciers à outils et en
aciers rapides, outils pour enlèvement par copeaux,
rapportés d'acier et de carbure, matrices, outillages
d'emboutissage, de pressage et d'étirage, pièces façonnées
pour presses à briquettes, cylindres, rouleaux, pièces de
machines coulées et forgées, à savoir axes, arbres, pivots,
vilebrequins, arbres à cames, tiges de pistons et bielles,
roues dentées, crémaillères, roues à cliquet, cliquets,
croix de Malte, pignons, vis sans fin, tourillons de
commande, d'accouplement et de pied de bielle, pivots
d'arbres verticaux, plaques de butée, boîtes, croix de
différentiel, chemises de cylindres, pistons, pièces de
soupape, gicleurs, disques à cames, disques excentriques,
leviers de changement de vitesse, culbuteurs, articulations,
coulisses de machines-outils, manchons de serrage et
fourrures pour machines-outils, cylindres dresseurs,
cylindres de pression et cylindres à graver, disques et
cylindres à ailettes pour machines à tricoter, guide-fil,
coulisses d'aiguilles, moules pour coulage par injection et
pression, barres d'alésage, tambours de frein, cames de
frein, bandages de roues. Outils pour enlèvement par copeaux en aciers à outils et en
aciers rapides, outils pour enlèvement par copeaux,
rapportés d'acier et de carbure, filières, outillages
d'emboutissage, de pressage et d'étirage, coutellerie,
couverts de table, lames de cisaille. Électrodes de soudure laminées, étirées et frittées,
gabarits, aimants, systèmes d'aimants, alliages pour aimants
permanents, aimants permanents frittés et coulés, systèmes
d'aimants permanents. Trousses médicales, à savoir instruments pour chirurgiens. Ustensiles en métaux non précieux et leurs alliages, à
savoir ustensiles de ménage et de cuisine, y compris la
vaisselle.
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
10 - Medical apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Stainless and acid-resistant alloys of iron and steel, as
well as all goods made of such alloys, such as sheet metal,
bars, wires, springs, fittings. Machine parts, valves, springs. Prostheses and parts thereof. Motor car parts, springs.
