A method for hot rolling a steel including the steps of i. elaborating, by smelting steel scrap including at least one of the following residual elements: Mo, Sn, Sb, As, a steel grade having a theoretical hot rolling temperature THR_TH, by smelting steel scraps including at least one of the following residual elements: Mo, Sn, Sb, As, and optionally hot metal coming from a blast furnace and/or direct reduced iron, ii. estimating the liquid steel composition, iii. casting a semi-finished product with the liquid steel, iv. defining, TOFFSET, the smallest hot rolling temperature increase able to offset the presence of the residual elements: Mo, Sn, Sb and/or As, v. hot rolling the semi-finished product at a temperature THR being: THR=THR_TH+TOFFSET.
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 1/26 - 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 hot-rolling
2.
Hot rolled and heat-treated steel sheet and method of manufacturing the same
A method for manufacturing a hot rolled and heat-treated steel sheet includes casting to obtain a semi-finished product having a composition comprising, by weight percent: C: 0.12-0.25%, Mn: 3.0-8.0%, Si: 0.7-1.5%, Al: 0.3-1.2%, B: 0.0002-0.004%, S≤0.010%, P≤0.020%, N≤0.008%, and iron; reheating at a Treheat between 1150° C. and 1300° C.; hot rolling the reheated semi-finished product with a finish rolling temperature (Tnr-100° C. to 950° C.), coiling the hot rolled steel sheet at a Tcoil (20° C. and 700° C.) and cooling to obtain a microstructure comprising martensite and bainite, M+B>80%, F<20%, and <20% of the sum of martensite-austenite (M-A) islands and carbides, and having the multiplication of PAGS <1000 μm2 and a pancaking index <5; reheating, quenching, reheating to a partitioning temperature, holding for 1 to 1000 seconds, and cooling.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
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 hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
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A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
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A hot-stamped coated steel part includes a steel substrate and an aluminum alloy coating comprising, proceeding from steel substrate outwards, an interdiffusion layer and an outer layer. The total thickness of the coating ecoating and the thickness of the interdiffusion layer eIDL satisfy the following condition:
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A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm. The method contains the steps of providing a semi-product having a composition containing: 0.04%≤C≤0.38%, 0.40%≤Mn≤3%, 0.005%≤Si≤0.70%, 0.005%≤Al≤0.1%, 0.001%≤Cr≤2%, 0.001%≤Ni≤2%, 0.001%≤Ti≤0.2%, Nb≤0.1%, B≤0.010%, 0.0005%≤N≤0.010%, 0.0001%≤S≤0.05%, 0.0001%≤P≤0.1%, Mo≤0.65%, 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 Tcoil satisfying: 450° C.≤Tcoil≤Tcoilmax with Tcoilmax=650−140×fγ, Tcoilmax being expressed in degrees Celsius and fγ 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 containing a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness between 10 and 33 μm, on each side of the hot-rolled steel sheet.
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
5.
HOT-ROLLED AND COATED STEEL SHEET FOR HOT-STAMPING, HOT-STAMPED COATED STEEL PART AND METHODS FOR MANUFACTURING THE SAME
A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm. The method contains the steps of providing a semi-product having a composition containing: 0.04%≤C≤0.38%, 0.40%≤Mn≤3%, 0.005%≤Si≤0.70%, 0.005%≤Al≤0.1%, 0.001%≤Cr≤2%, 0.001%≤Ni≤2%, 0.001%≤Ti≤0.2%, Nb≤0.1%, B≤0.010%, 0.0005%≤N≤0.010%, 0.0001%≤S≤0.05%, 0.0001%≤P≤0.1%, Mo≤0.65%, 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 Tcoil satisfying: 450° C.≤Tcoil≤Tcoilmax with Tcoilmax=650-140×fγ, Tcoilmax being expressed in degrees Celsius and fγ 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 containing a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness between 10 and 33 μm, on each side of the hot-rolled steel sheet.
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
The invention relates to a sandwich panel comprising a photovoltaic active area positioned on the outer sheet, whose upper electrical connector is positioned in an upper cavity positioned within the insulation material adjacent to the upper transverse side of the insulation material so that the upper electrical connector can be accessed from the upper cavity along the upper transverse side, and whose lower electrical connector is positioned in a lower cavity positioned within the insulation material adjacent to the lower transverse side of the insulation material so that the lower electrical connector can be accessed from the lower cavity along the lower transverse side.
The invention relates to a sandwich panel comprising a photovoltaic active area positioned on an outer sheet comprising an outer mortise and an outer tenon, the upper, respectively lower, electrical connector of the photovoltaic active area being positioned in an upper, respectively lower, cavity, the upper cavity being positioned within the insulation material in the upper half of the sandwich panel and adjacent to either one of the longitudinal sides of the insulation material or the inner sheet so that the upper electrical connector can be accessed from the upper cavity, the lower cavity being positioned within the insulation material in the lower half of the sandwich panel and adjacent to either one of the longitudinal sides of the insulation material or the inner sheet so that the first lower electrical connector can be accessed from the lower cavity.
H02S 20/23 - Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
The invention relates to a process for manufacturing a sandwich panel comprising a photovoltaic active area positioned on the outer sheet and whose upper, respectively lower, electrical conductor is connected to an upper, respectively lower, cable at the backside of the outer sheet, the process comprising positioning the outer sheet in a mold, inserting at least one of the first upper electrical connector and the first lower electrical connector, with a downstream portion of its cable, in a groove formed in the outer sheet, putting insulation in place and maintaining the inner sheet at a given distance from the outer sheet.
The invention relates to a sandwich panel comprising a photovoltaic active area positioned on an outer sheet comprising an outer mortise and an outer tenon, the upper, respectively lower, electrical connector of the photovoltaic active area being positioned in an upper, respectively lower, cavity, the upper cavity being positioned within the insulation material in the upper half of the sandwich panel and adjacent to either one of the longitudinal sides of the insulation material or the inner sheet so that the upper electrical connector can be accessed from the upper cavity, the lower cavity being positioned within the insulation material in the lower half of the sandwich panel and adjacent to either one of the longitudinal sides of the insulation material or the inner sheet so that the first lower electrical connector can be accessed from the lower cavity.
H02S 20/23 - Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
The invention relates to a process for manufacturing a sandwich panel comprising a photovoltaic active area positioned on the outer sheet and whose upper, respectively lower, electrical conductor is connected to an upper, respectively lower, cable at the backside of the outer sheet, the process comprising positioning the outer sheet in a mold, inserting at least one of the first upper electrical connector and the first lower electrical connector, with a downstream portion of its cable, in a groove formed in the outer sheet, putting insulation in place and maintaining the inner sheet at a given distance from the outer sheet.
The invention relates to a sandwich panel comprising a photovoltaic active area positioned on the outer sheet and whose electrical connectors are positioned in a first cavity positioned within the insulation material and adjacent to either one of the sides of the insulation material or the inner sheet so that the electrical connectors can be accessed from the first cavity.
H02S 20/23 - Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
12.
METHOD FOR DETERMINING A PROCESSING SEQUENCE FOR AN ENSEMBLE OF SEMI-PRODUCTS, RELATED PROCESSING METHOD, SCHEDULING DEVICE, PROCESSING LINE AND COMPUTER PROGRAM
This method for determining a processing sequence for an ensemble of semi-products is computer implemented and comprises: - an initialization phase (P01 ) wherein a list of the semi-products is acquired; - a feasibility phase (P02) wherein a feasible sequence is sought from a graph representing said ensemble, in which each semi-product is represented by a node, the feasibility phase comprising: + identifying (S01 ) a candidate path, and for the candidate path: + first searching (S02) along said candidate path for an infeasible transition between two successive nodes; if an infeasible transition is found: + second searching (S04) for a movable segment to be moved; if a movable segment is found: + moving (S06) the movable segment; + until a stop condition is reached, carrying out successively additional iteration(s) of the first searching, second searching and moving; the processing sequence being determined from the candidate path of the last iteration.
The invention relates to a process for manufacturing a sandwich panel comprising a photovoltaic active area positioned on the outer sheet and whose upper, respectively lower, electrical conductor is connected to an upper, respectively lower, cable at the backside of the outer sheet, the latter comprising a cavity in which one of the first upper electrical connector and the first lower electrical connector is positioned, the process comprising positioning the outer sheet in a mold, inserting the other of the first upper electrical connector and the first lower electrical connector, with a downstream portion of its cable, either in a hole in one of the sides of the mold or in a groove formed in the inner sheet or in a groove formed in the outer sheet, putting insulation in place and maintaining the inner sheet at a given distance from the outer sheet.
The invention relates to a process for manufacturing a sandwich panel comprising a photovoltaic active area positioned on the outer sheet and whose upper, respectively lower, electrical conductor is connected to an upper, respectively lower, cable at the backside of the outer sheet, the latter comprising a cavity in which one of the first upper electrical connector and the first lower electrical connector is positioned, the process comprising positioning the outer sheet in a mold, inserting the other of the first upper electrical connector and the first lower electrical connector, with a downstream portion of its cable, either in a hole in one of the sides of the mold or in a groove formed in the inner sheet or in a groove formed in the outer sheet, putting insulation in place and maintaining the inner sheet at a given distance from the outer sheet.
The invention relates to a sandwich panel comprising a photovoltaic active area positioned on the outer sheet, whose upper electrical connector is positioned in an upper cavity positioned within the insulation material adjacent to the upper transverse side of the insulation material so that the upper electrical connector can be accessed from the upper cavity along the upper transverse side, and whose lower electrical connector is positioned in a lower cavity positioned within the insulation material adjacent to the lower transverse side of the insulation material so that the lower electrical connector can be accessed from the lower cavity along the lower transverse side.
The invention relates to a sandwich panel comprising a photovoltaic active area positioned on the outer sheet and whose electrical connectors are positioned in a first cavity positioned within the insulation material and adjacent to either one of the sides of the insulation material or the inner sheet so that the electrical connectors can be accessed from the first cavity.
A sealing lock for a vacuum deposition facility of a coating on a running metal strip following a running path, including walls and at least three pairs of rolls, inside the walls, wherein each pair of rolls of the at least three pairs of rolls includes a roll with a metal surface and a roll with an elastomer surface layer, having a thickness from 3 to 30 mm, forming a gap from 1 to 11 mm, the rolls with an elastomer surface layer of two successive pairs of rolls are on opposite sides of the running path.
A steel sheet, coated with a metallic coating including, by weight percent, from 7.5 to 9.0% of zinc, from 1.1 to 4.0% of silicon, from 1.1 to 8.0% of magnesium, up to 3.0% of iron, optional elements chosen from Pb, Ni, Zr, or Hf, the content by weight of each element being less than 0.3%, optionally up to 100 ppm of Calcium and unavoidable impurities up to 0.02%, a balance being aluminum, and wherein the coating weight of the metallic coating is from 50 to 500 g/m2 for the sum of both sides of the-steel sheet.
06 - Common metals and ores; objects made of metal
Goods & Services
Common metals and their alloys; steel, unwrought or
semi-wrought, specifically stainless steel, carbon steel,
coated steel, coated quenched steel, chromium steel,
galvanized steel, electrogalvanized steel; the aforesaid
goods being in the form of billets, cogs, slabs, plates,
foils, strips, ribbons, blanks, cylinders, spools, bands,
cross sections, bars, beams, joists, bands, pegs, tubes,
blocks, ingots; forged, molded, cast, die-cast, pressed,
welded or machined metal pieces, for use in all industries
and particularly in construction, packaging, household
electricals, automobiles, tools, machines and machine tools;
sheets of metal, sandwich sheets, profiled sheets, composite
sheets, coated sheets; multi-layered metal sheets with two
organic coatings and multi-layered metal panels with two
organic coatings; composite metal products specifically
sheets, plates, foils of metal; hot- or cold-rolled metal
products specifically sheets, plates, foils, strips,
ribbons, blanks, cylinders, spools, bands, cross sections,
bars, beams, joists; building materials of metal; cross
sections, heavy sections, headers, sheet piles, joists,
lining plates of metal for construction, floors of metal,
floor tiles of metal, partitions of metal, multi-layered
panels of metal, sidings of metal, single-skin or
double-skin cladding panels of metal, roofing of metal,
steel tubs, transportable buildings of metal; buildings of
metal particularly shelters designed for users of all types
of transport; pipes of metal; railway material of metal;
road signs of metal (neither luminous nor mechanical),
advertising and display boards of metal; crash barriers of
metal for roads, security bars and barriers of metal,
scaffolding of metal, bicycle shelters, cycle parking racks,
baskets, letter boxes of metal, tanks and containers of
metal; covering products and parts, of metal, designed to
form interior and exterior coverings for small and large
household electricals particularly for cooking,
refrigeration, washing and heating and for all furniture,
parts and components for domestic or canteen kitchens, metal
pieces and components of the aforesaid goods.
20.
A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
A method for manufacturing pig iron in an electrical 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, tapping the pig iron into a ladle, and adding a carbon containing material directly in the pig iron in the runner of at least one of the smelting furnace tap holes. It also deals with the manufacturing of steel from the pig iron and the associated electrical smelting furnace.
A coated steel sheet providing cathodic protection and suitable for manufacturing a press hardened part with good powdering resistance during press-hardening and good corrosion performance. A method for the manufacture of hardened parts starting from a steel sheet coated with a metallic coating. The part has good characteristics with respect to corrosion and powdering resistance. The present disclosure is particularly well suited for the manufacture of automotive vehicles.
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
22.
A NON-HEAT TREATED COLD ROLLED SUPER PLASTIC LOW DENSITY STEEL SHEET AND A METHOD OF PRODUCTION THEREOF
A hot stamped coated steel product, the hot stamped coated steel product including: a base steel; and a coating having a thickness of including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer, the base steel having a composition comprising: 0.15%
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), while leaving the full amount of said aluminum-based coating (2) on the bottom side of said weld edges (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 method for manufacturing pig iron in a smelting furnace 13 including a vessel 20, 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 carbon containing material 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 heating a furnace including radiant tubes and being able to thermally treat a running steel strip including the steps of: i. supplying at least one of the radiant tubes with H2 and O2 such that the H2 and the O2 get combined into heat and steam, ii. recovering the steam from the at least one of the radiant tubes, iii. electrolysing the steam to produce H2 and O2, and iv. supplying at least one of the radiant tubes with the H2 and O2 produced in step iii, such that they get combined into heat and steam.
F27B 3/26 - Arrangements of heat-exchange apparatus
C25B 1/042 - Hydrogen or oxygen by electrolysis of water by electrolysis of steam
F27B 9/06 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and chargeFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity electrically heated
F27D 17/13 - Arrangements for using waste heat using heat storage using regenerative heat exchangers
31.
STEEL PRODUCTION METHOD COMPRISING A MIXED GAS PRODUCTION STEP INVOLVING A VENTURI SYSTEM
The steel production method comprises: - a molten steel production step, producing a molten steel and an exhaust gas (12), - a gas conditioning step, wherein the exhaust gas (12) is fed to a pressure swing adsorption system (4) to produce an enriched gas (24) and a tail gas (26), - a chemical product production step, wherein the enriched gas (24) is fed to a biotechnological plant (6) to produce a chemical product (38) and a residual gas (40), - a mixed gas production step, wherein the tail gas (26) and the residual gas (40) are fed to a venturi system (36), the residual gas (40) being used as a driving force to generate a venturi effect and to withdraw the tail gas (26) from the swing pressure adsorption system (4).
A hot rolled steel sheet having a composition comprising of the following elements 0.03% ≤ Carbon ≤ 0.070 %, 0.4 % ≤ Manganese ≤ 0.9%, 0.01% ≤ Aluminum ≤ 0.08 %, 0.01% ≤ Niobium ≤ 0.08%, 0.01 % ≤ Titanium ≤ 0.1%, 0.0005% ≤ Calcium ≤ 0.005%, 0% ≤ Phosphorus ≤ 0.03 %, 0 % ≤ Sulfur ≤ 0.015 %, 0 % ≤ Nitrogen ≤ 0.02%, 0.001% ≤ Silicon ≤ 0.09%, 0% ≤ Chromium ≤ 0.2%, 0.% ≤ Copper ≤ 0.25%, 0% ≤ Nickel ≤ 0.2%, 0% ≤ Molybdenum ≤ 0.2%, 0% ≤ Vanadium ≤ 0.1%, 0 % ≤ Boron ≤ 0.003%,0 % ≤ Magnesium ≤ 0.010%,0% ≤ Cerium≤ 0.1%, 0% ≤ Zirconium ≤ 0.010%,the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction 65% to 95% Ferrite, 5% to 35% Bainite, Pearlite up to 3%, martensite and residual austenite up to a cumulated fraction of 2%, wherein the said hot rolled steel sheet has an inclusion density of at least 100 inclusions per square micro-meter and the inclusions having a size of 2 microns or more being 30% or less of the total number of inclusions.
Steel part having the following characteristics: -a chemical composition comprising, by weight % 0.26 ≤ C ≤ 0.33 0.15 ≤ Si ≤ 0.40 1.0 ≤ Mn ≤ 1.8 0.10 ≤ Cr ≤ 0.40 0.02 ≤ Al ≤ 0.10 0.01 ≤ Ti ≤ 0.06 0.0010 ≤ B ≤ 0.0050 the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, -a microstructure comprising, in surface fraction, 70% or more of auto- tempered martensite, from 1 to 20% of bainite, the rest of the microstructure comprising optionally retained austenite and ferrite.
Steel part having the following characteristics: -a chemical composition comprising, by weight % 0.26 ≤ C ≤ 0.33 0.15 ≤ Si ≤ 0.40 1.0 ≤ Mn ≤ 1.8 0.10 ≤ Cr ≤ 0.40 0.02 ≤ Al ≤ 0.10 0.01 ≤ Ti ≤ 0.06 0.0010 ≤ B ≤ 0.0050 the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, -a microstructure comprising, in surface fraction, 70% or more of auto-tempered martensite, from 1 to 20% of bainite, the rest of the microstructure comprising optionally retained austenite and ferrite.
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), while leaving the full amount of said aluminum-based coating (2) on the bottom side of said weld edges (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 method for manufacturing pig iron in an electrical 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 tapping the pig iron into a ladle and adding a silicon containing material directly in the pig iron in the runner of at least one of the smelting furnace tap holes. It also deals with the manufacturing of steel from the pig iron and an associated electrical smelting furnace.
A method of manufacturing molten pig iron into an electrical smelting unit. The method includes the following successive steps: providing a directly reduced iron product, feeding the DRI product into the smelting unit, feeding together with the DRI product at least one steel or ironmaking by-product-based material including at least 10% in weight of slag forming agents, and melting the DRI product and the at least one steel or ironmaking by-product-based material to produce molten pig iron. A steel manufacturing method using the pig iron is also provided.
The instant technology concerns, inter alia, a method for monitoring the operation of a direct reduction plant (1) that comprises a direct reduction shaft furnace (10), the method comprising: s1: acquiring an image (Img) of an ensemble of pellets (8) output by the shaft furnace, s2: analysing said image using an algorithm suitable for detecting one or more clusters (9) of pellets and, optionally, one or more pieces of shaft internal crust, and s3: emitting an obstruction-risk signal if one or more clusters or pieces of crust are detected in step s2.
A method for manufacturing pig iron in an electrical smelting furnace including a vessel 20, 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 steel part includes a steel sheet substrate and a coating on at least one surface of the steel sheet substrate. The coating includes between 0.2 and 0.7% by weight of Al, with a remainder of the metal coating being Zn and inevitable impurities. The steel sheet substrate and the coating have at least one deformation. An outer surface of the coating has a waviness Wa0.8 of less than or equal to 0.43 μm.
C23C 2/06 - Zinc or cadmium or alloys based thereon
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
C21D 7/00 - Modifying the physical properties of iron or steel by deformation
C21D 7/02 - Modifying the physical properties of iron or steel by deformation by cold working
C21D 7/04 - Modifying the physical properties of iron or steel by deformation by cold working of the surface
C21D 7/13 - Modifying the physical properties of iron or steel by deformation by hot working
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C23C 2/00 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor
C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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
C23C 2/16 - Removing excess of molten coatingsControlling or regulating the coating thickness using fluids under pressure, e.g. air knives
C23C 2/34 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor characterised by the shape of the material to be treated
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
42.
METHOD OF WELDING A STEEL SHEET COMPRISING TIB2 PRECIPITATES
A process for welding at least two steel sheets including the following successive steps: providing at least one steel sheet having a composition including the following elements, expressed by weight percent: 0.01%≤C≤0.2%, 2.5%≤Ti≤10%, (0.45×Ti)−1.35%≤B≤(0.45×Ti)+0.70%, S≤0.03%, P≤0.04%, N≤0.05%, O≤0.05% and including precipitates of TiB2, the balance being Fe and unavoidable impurities resulting from the elaboration, providing a second steel sheet, welding the first steel sheet and the second steel sheet by using a filler wire, the filler wire having a composition, including Ti: 0.8-2 wt % to obtain a molten zone having an average content of free titanium Ti* above or equal to 0.60 wt %.
A method for manufacturing pig iron in an electrical 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 press hardening method including the following steps: A. the provision of a steel sheet for heat treatment being optionally coated with a zinc- or aluminum-based pre-coating, B. the flexible rolling of the steel sheet in the rolling direction so as to obtain a steel sheet having a variable thickness, C. the cutting of the rolled steel sheet to obtain a tailored rolled blank, D. the deposition of a hydrogen barrier pre-coating over a thickness from 10 to 550 nm, E. the heat treatment of the tailored rolled blank to obtain a fully austenitic microstructure in the steel, F. the transfer of the tailored rolled blank into a press tool, G. the hot-forming of the tailored rolled blank to obtain a part having a variable thickness, H. the cooling of the part having a variable thickness obtained at step G).
A non-oriented electrical steel sheet having a composition including, expressed in percentage by weight: 0.0001%≤Carbon≤0.005%, 0.2%≤Manganese≤0.3%, 3.1%≤Silicon≤3.6%, 0.6%≤Aluminum≤1%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and can contain 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, from 30% to 35% when calculated in accordance of Bertotti method.
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 relates to a steel wire rope (100) comprising: − a core steel wire (110), − a plurality of steel wires 140 wound around the core steel wire (110) in a plurality of layers, − a sensor (150) wherein the sensor comprises a tube which contains at least one optical fiber (160), satheid sensor being configured to provide measurements of at least one physical parameter of the steel wire rope. The invention also relates to a steel wire rope monitoring system and to a method of monitoring the steel wire rope.
D07B 1/06 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
D07B 1/14 - Ropes or cables with incorporated auxiliary elements, e.g. for making, extending throughout the length of the rope or cable
G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
G01L 5/105 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using electro-optical means
The invention relates to an ironmaking method wherein two gases (13,14) are injected into a blast furnace at a single level, said injection being done at the tuyere level of the blast furnace and comprises the injection of an O2-rich gas (13) comprising more than 95% in volume of O2 and of an H2-rich gas (14) comprising more than 95% of H2, without any injection of other reductant at the tuyere level.
The electrolysis device (1) for reducing iron oxides into metallic iron comprises at least one anode (6) and at least one cathode (8) immersed into an electrolytic bath (4), the cathode (8) comprising a collecting surface (18) on which metallic iron is deposited after reduction of iron oxides. At least a removable part (16) of the cathode (8), comprising at least the collecting surface (18), is made in a melting material adapted to be melted with the deposited metallic iron on the collecting surface (18) to produce a steel material, said removable part (16) being removable from the electrolysis device together with the deposited metallic iron.
The invention relates to a method for injecting hot gas into a direct reduction shaft, wherein said method comprises the following steps: - introducing gas into at least one device for heating gas, said device for heating gas comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, said insert 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 800°C to 1100°C, - releasing said hot gas into the direct reduction shaft.
F27D 3/16 - Introducing a fluid jet or current into the charge
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
50.
METHOD FOR HEATING GAS AND STEELMAKING VESSEL THEREOF
The invention relates to a steelmaking manufacturing device for heating gas wherein said device comprises: - 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 and able to feed energy into said insert, so that said energy fed into said insert is transferred to the gas flowing into said pipe, so that said gas is heated to a temperature from 300°C to 2300°C.
H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications
F16L 53/34 - Heating of pipes or pipe systems using electric, magnetic or electromagnetic fields, e.g. induction, dielectric or microwave heating
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
51.
METHOD FOR INJECTING HOT GAS INTO A BLAST FURNACE AND INSTALLATION THEREOF
The invention relates to a method for injecting hot gas into a blast furnace, wherein said method comprises the following steps: - introducing gas into at least one device for heating gas, said device for heating gas comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, said insert 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 700°C to 2300°C, - releasing said hot gas into the blast furnace using means for releasing gas, said means for releasing gas being connected to said at least one device for heating gas.
The invention relates to a steelmaking manufacturing device for heating gas wherein said device comprises: - 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 and able to feed energy into said insert, so that said energy fed into said insert is transferred to the gas flowing into said pipe, so that said gas is heated to a temperature from 300°C to 2300°C.
H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications
F16L 53/34 - Heating of pipes or pipe systems using electric, magnetic or electromagnetic fields, e.g. induction, dielectric or microwave heating
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
53.
METHOD FOR INJECTING HOT GAS INTO A BLAST FURNACE AND INSTALLATION THEREOF
The invention relates to a method for injecting hot gas into a blast furnace, wherein said method comprises the following steps: - introducing gas into at least one device for heating gas, said device for heating gas comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, said insert 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 700°C to 2300°C, - releasing said hot gas into the blast furnace using means for releasing gas, said means for releasing gas being connected to said at least one device for heating gas.
The invention relates to an ironmaking method wherein two gases (13,14) are injected into a blast furnace at a single level, said injection being done at the tuyere level of the blast furnace and comprises the injection of an O2-rich gas (13) comprising more than 95% in volume of O2 and of an H2-rich gas (14) comprising more than 95% of H2, without any injection of other reductant at the tuyere level.
The electrolysis device (1) for reducing iron oxides into metallic iron comprises at least one anode (6) and at least one cathode (8) immersed into an electrolytic bath (4), the cathode (8) comprising a collecting surface (18) on which metallic iron is deposited after reduction of iron oxides. At least a removable part (16) of the cathode (8), comprising at least the collecting surface (18), is made in a melting material adapted to be melted with the deposited metallic iron on the collecting surface (18) to produce a steel material, said removable part (16) being removable from the electrolysis device together with the deposited metallic iron.
The invention relates to a method for injecting hot gas into a direct reduction shaft, wherein said method comprises the following steps: - introducing gas into at least one device for heating gas, said device for heating gas comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, said insert 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 800°C to 1100°C, - releasing said hot gas into the direct reduction shaft.
F27D 3/16 - Introducing a fluid jet or current into the charge
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
57.
Automotive vehicle with press hardened visible steel parts
An automobile, wherein at least one outer skin part or at least one semi-visible part is made of coated press hardened steel, the coating of the steel before heating and press hardening containing by weight, 8 to 12% of Silicon, up to 3% Iron, and unavoidable impurities up to 0.1%, the balance being Aluminum, and wherein the coating has a thickness from 20 to 40 μm per side.
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 carbon containing material directly in the pig iron layer. It also deals with the manufacturing of steel from the pig iron and an associated electrical smelting furnace.
A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.15%≤Manganese≤0.2%, 3%≤Silicon≤3.6%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn≤5.5%, various optional elements. The remainder composition is 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 eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 35 to 55% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.635T to 1.670T.
Steel part having a chemical composition comprising, by weight %, 0.18≤C≤0.27, 0.18≤Si≤0.30, 1.0≤Mn≤1.5, 0.14≤Cr≤0.25, 0.02≤Al≤0.06, 0.02≤Ti≤0.06, 0.0020≤B≤0.0040, 0≤S≤0.008, 0≤N≤0.020, the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, having a microstructure including, in surface fraction, 95% or more of martensite and a prior austenite grain skin refinement ratio equal to or above 1.2, the ratio being defined as PAGS_B/PAGS_S, wherein PAGS_B is the average prior austenite grain diameter in the bulk (3) expressed in μm and PAGS_S is the average prior austenite grain diameter in the skin (2), also expressed in μm.
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
Steel part having a chemical composition including, by weight %, 0.18≤C≤0.27, 0.18≤Si≤0.30, 1.0≤Mn≤1.5, 0.14≤Cr≤0.25, 0.02≤Al≤0.06, 0.02≤Ti≤0.06, 0.0020≤B≤0.0040, 0≤S≤0.008, 0.008≤N≤0.020, the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, having a microstructure including, in surface fraction, 95% or more of martensite, wherein the surface fraction of TIN particles in the skin portion is equal to or greater than 200*10−6 inclusions/mm2 and the average equivalent diameter of the TiN particles in the skin portion is equal to or smaller than 2.0 microns.
The unloading system (1) comprises: - a container (2) storing the metal scrap material, arranged in a removable manner on the vehicle (6), - a prehension device (4) comprising a prehension element (22) arranged to cooperate with the container (2) to remove said container (2) from the vehicle (6) and to move said container (2) to an unloading area (20). The prehension device comprises an actuator (24) moving the container (2) in rotation relative to the prehension element (22) to tilt the container (2) and deliver the metal scrap material stored in said container (2) on the unloading area (20).
B66C 1/66 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
B66C 13/08 - Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack for depositing loads in desired attitudes or positions
B66F 9/19 - Additional means for facilitating unloading
64.
ANNEALED AND TEMPERED STEEL SHEET, AND METHOD FOR MANUFACTURING THE SAME
The unloading system (1) comprises: - a container (2) storing the metal scrap material, arranged in a removable manner on the vehicle (6), - a prehension device (4) comprising a prehension element (22) arranged to cooperate with the container (2) to remove said container (2) from the vehicle (6) and to move said container (2) to an unloading area (20). The prehension device comprises an actuator (24) moving the container (2) in rotation relative to the prehension element (22) to tilt the container (2) and deliver the metal scrap material stored in said container (2) on the unloading area (20).
B66C 1/66 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
B66C 13/08 - Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack for depositing loads in desired attitudes or positions
B66F 9/19 - Additional means for facilitating unloading
66.
DEVICE AND METHOD FOR COOLING ROLLS USED FOR ROLLING IN A HIGHLY TURBULENT ENVIRONMENT
A rolling stand for metallic products including at least one pair of work rolls, at least a pair of back-up rolls, at least one water pillow cooling device able to project a plurality of cooling jets under pressure on at least one of said work roll, a removable plate. The removable plate is placed between said cooling device and said work roll. The removable plate is concave and curved with a curvature such that a gap between said removable plate and said upper work roll is constant or increases when moving in direction of the back-up roll and such that said gap is from 5 to 200 mm. The removable plate is also holed such that the cooling jets can pass through said removable plate.
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
Rear structure for an electric vehicle having a rear rail which includes a rear portion, a front portion and a transition zone, such that in the event of a rear crash the rear portion and the transition zone are both able to deform to maximize the amount of energy absorption.
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 29/00 - Superstructures characterised by material thereof
A method of manufacturing a normalized steel alloy plate for a railroad tank car is provided. The steel alloy plate includes a steel alloy including in wt. %: C: 0.1-0.15; Mn: 1.0-1.65; Si: 0.15-0.40; Al: 0.015-0.06; Mo: 0.1-0.3; Ni: 0.1-0.25; Nb: 0.015-0.045; Ti: up to 0.02; Cr: up to 0.22; V: up to 0.08; Cu: up to 0.35; P: max 0.025; S: max 0.015; and N: 0.004-0.01. The alloy plate is normalized for at least 30 minutes at 900° C. The normalized alloy plate may have a tensile strength of at least 560 MPa; a yield strength of at least 345 MPa; a total elongation of at least 22%; a CVN impact toughness of at least 135.5 J at −34.4° C.; a CVN impact toughness of at least 122 J at −45.5° C. The normalized alloy plate may have a ferrite-bainite microstructure, with 10% or less pearlite. The alloy normalized alloy plate may have an absence of any banded ferrite-pearlite/martensite structure.
C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
B61D 5/00 - Tank wagons for carrying fluent materials
B61D 17/04 - Construction details of vehicle bodies with bodies of metalConstruction details of vehicle bodies with composite, e.g. metal and wood, body structures
A hot rolled steel sheet having a composition comprising of the following elements, 0.04% ≤ Carbon ≤ 0.1 %,1 % ≤ Manganese ≤ 1.50%,0.5% ≤ Silicon ≤ 1.3%,0 02% ≤ Aluminum ≤ 0.08 %, 0.1% ≤ Chromium ≤ 0.6%,0.02% ≤ Niobium ≤ 0.08%, 0.02% ≤ Phosphorus ≤ 0.1 %, 0 % ≤ Sulfur ≤ 0.005 %,0 % ≤ Nitrogen ≤ 0.012%, 0% ≤ Molybdenum ≤ 0.3%, 0% ≤ Vanadium ≤ 0.2, 0.0001% ≤ Calcium ≤ 0.005%, 0 % ≤ Nickel ≤ 0. 2%,0 % ≤ Magnesium ≤ 0.0010%, 0 % ≤ Copper ≤ 0.2% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 68% to 90% Ferrite, 5% to 25% Bainite, 2% to 10% Pearlite, Martensite and/or Austenite islands from 0% to 2% wherein the said hot rolled steel sheet has an inclusion density from 10 inclusions per square micro-meter to 100 inclusions per square micro-meters and a the amount of niobium present as carbides, nitrides and/or carbo-nitrides is equal to or more than 35% of the nominal niobium content present in the steel in percentage by weight.
A double cold rolled non-oriented electrical steel sheet having a composition including, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.15%≤Manganese≤0.3%, 3.2%≤Silicon≤3.8%, 0.8%≤Aluminum≤1.1%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and can contain 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 than 30% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.66 T to 1.69 T.
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 steel sheet has a chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk includes an inclusion population in which the sum of clustering indexes of MnS and TiN/Ti(C,N) inclusions is less than or equal to 300 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending anisotropy equal to or lower than 7°.
A non-oriented electrical steel sheet having a composition of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.09%≤Manganese≤0.15%, 2.5%≤Silicon≤3%, 0.1% ≤ Aluminum≤0.5%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and can contain various optional elements, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% when calculated in accordance of Bertotti method.
A steel sheet made of a steel having a composition including, C: 0.3-0.4%, Mn: 0.5-1.0%, Si: 0.4-0.8%, Cr: 0.1-1.0%, Mo: 0.1-0.5%, Nb: 0.01-0.1%, Al: 0.01-0.1%, Ti: 0.008-0.03%, B: 0.0005-0.003%, P≤ 0.020%, Ca≤0.001%, S≤0.004%, N≤0.005% and including optionally Ni<0.5%, having a microstructure including, in surface fraction, from 60% to 95% of ferrite, the rest being martensite-austenite islands, pearlite or bainite, and including a bulk and a skin layer occupying the outermost 10% of the thickness on either sides of the bulk, the skin layer having a skin layer inclusion population wherein the surface fraction of oxides is equal to or below 60*10−6.
A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.15%≤Manganese≤0.25%, 3.2%≤Silicon≤3.8%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and various optional elements. The remainder composition is iron and unavoidable impurities caused by processing. The microstructure is 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 33% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.630T to 1.65T.
A double cold rolled non-oriented electrical steel sheet having a composition including: 0.0001%≤Carbon≤0.007%, 0.1%≤Manganese≤0.2%, 3.1%≤Silicon≤3.6%, 0.8%≤Aluminum≤1.1%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and can contain 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, is from 35% to 45% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.64 T to 1.66 T.
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 present invention provides fabrication methods for cold rolled, precoated and press hardened steel sheets, for which the chemical composition includes, with contents expressed by weight, 0.24%≤C≤0.38%, 0.40%≤Mn≤3%, 0.10%≤Si≤0.70%, 0.015%≤Al≤0.070%, 0%≤Cr≤2%, 0.25%≤Ni≤2%, 0.015%≤Ti≤0.10%, 0%≤Nb≤0.060%, 0.0005%≤B≤0.0040%, 0.003%≤N≤0.010%, 0.0001%≤S≤0.005%, 0.0001%≤P≤0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy:
The present invention provides fabrication methods for cold rolled, precoated and press hardened steel sheets, for which the chemical composition includes, with contents expressed by weight, 0.24%≤C≤0.38%, 0.40%≤Mn≤3%, 0.10%≤Si≤0.70%, 0.015%≤Al≤0.070%, 0%≤Cr≤2%, 0.25%≤Ni≤2%, 0.015%≤Ti≤0.10%, 0%≤Nb≤0.060%, 0.0005%≤B≤0.0040%, 0.003%≤N≤0.010%, 0.0001%≤S≤0.005%, 0.0001%≤P≤0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
,
The present invention provides fabrication methods for cold rolled, precoated and press hardened steel sheets, for which the chemical composition includes, with contents expressed by weight, 0.24%≤C≤0.38%, 0.40%≤Mn≤3%, 0.10%≤Si≤0.70%, 0.015%≤Al≤0.070%, 0%≤Cr≤2%, 0.25%≤Ni≤2%, 0.015%≤Ti≤0.10%, 0%≤Nb≤0.060%, 0.0005%≤B≤0.0040%, 0.003%≤N≤0.010%, 0.0001%≤S≤0.005%, 0.0001%≤P≤0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
,
with the chemical composition optionally including one or more of the following elements: 0.05%≤Mo≤0.65%, 0.001%≤W≤0.30%, 0.0005%≤Ca≤0.005%, with the remainder made up of iron and inevitable impurities coming from preparation.
C23F 17/00 - Multi-step processes for surface treatment of metallic material involving at least one process provided for in class and at least one process covered by subclass or or class
77.
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 composition of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.05%≤Manganese≤0.15%, 2.5%≤Silicon≤3.1%, 0.26%≤ Aluminum≤0.7%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and can contain various optional elements. The remainder composition is composed of iron and unavoidable impurities caused by processing. The microstructure of the steel sheet 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, from 35% to 45% when calculated in accordance of Bertotti method.
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 composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.21%≤Manganese≤0.7%, 3%≤Silicon≤3.6%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn≤5.5%, and can contain various optional elements. The remainder composition being composed of iron and unavoidable impurities. The microstructure is 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, from 35% to 45% and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.63T to 1.66T.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
A process for manufacturing a press hardened laser welded steel part, includes providing at least one first steel sheet with a composition containing, by weight 0.062≤C≤0.095%, the at least one first steel sheet precoated with a metallic precoating of aluminum, or aluminum-based alloy, or aluminum alloy; providing at least one second steel sheet with a composition containing, by weight, from 0.065 to 0.38% of carbon, the at least one second steel sheet precoated with a metallic precoating of aluminum, or aluminum-based alloy, or aluminum alloy; removing a portion of a thickness of the aluminum precoating at upper and lower sides along one side of a periphery of the at least one first steel sheet and the at least one second steel sheet; creating a welded blank by laser welding the at least one first steel sheet and the at least one second steel sheet, such that an aluminum content in a weld metal is lower than 0.3% by weight, the laser welding being performed along the periphery wherein the portion of the thickness of the aluminum precoating has been removed; heating the welded blank and holding the welded blank at a temperature Tm between 890 and 950° C., a holding duration Dm at the temperature being between 1 and 10 minutes, so as to obtain a heated welded blank; transferring the heated welded blank within a forming press, the transfer duration Dt being less than 10 s; hot forming the heated welded blank in the forming press so as to obtain a welded formed part; and cooling the welded formed part at a first cooling rate CR1 between 40 and 360° C./s in a temperature range between 750 and 450° C., and at a second cooling rate CR2 between 15 to 150° C./s in a temperature range between 450° C. and 250° C., wherein CR2
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
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
B21D 22/02 - Stamping using rigid devices or tools
B23K 26/02 - Positioning or observing the workpiece, e.g. with respect to the point of impactAligning, aiming or focusing the laser beam
A double cold rolled non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.1%≤Manganese≤0.3%, 3.1%≤Silicon≤3.8%, 0.6%≤Aluminum≤0.8%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, and can contain various optional elements. The remainder composition is iron and unavoidable impurities caused by processing. The microstructure 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, of 40 to 50% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.66T to 1.7T.
Equipment for treating a cutting piece is provides which includes an ultrasonic shot peening apparatus arranged for throwing shots on a cutting surface of the cutting piece so the cutting surface defines a cutting surface with shot impacts; and a grinding device arranged for grinding the cutting surface with shot impacts over a chosen thickness so that the cutting surface with the shot impacts defines a treated cutting surface.
B24C 1/02 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for sharpening or cleaning cutting tools, e.g. files
B23P 15/40 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
B24B 1/04 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
B24C 1/10 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
B24C 5/00 - Devices or accessories for generating abrasive blasts
B24C 11/00 - Selection of abrasive materials for abrasive blasts
82.
LOWER SHIELD OF BATTERY PACK AND METHOD TO PRODUCE THE SAME
A process to manufacture an automotive lower shield comprising a metal part assembly has the following steps: a. Providing a metal sheet, b. Applying on at least one side a pre-treatment solution, thereby providing a pretreatment layer c. Drying said pretreatment layer, d. Cutting the pretreated metal sheet into a blank, e. Forming said blank into a pretreated metal part, f. Joining the pretreated metal part to at least one other metal part by welding to obtain the metal part assembly, g. Applying a treatment composition on at least a portion of the pretreated metal part of the assembly, h. Drying said protection layer. Described is the process and the automotive lower shield obtained by the process.
A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%,, 0.15% ≤Manganese≤0.2%, 3%≤Silicon≤3.6%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn ≤5.5%, and can contain various optional elements, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 35 to 55% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.635T to 1.670T.
decdecdec time step by time step, according to ∆D2decdec= ∆X2decdec − ∆X2ococ with ∆X2decocdecdec is distance between an initial position of the steel surface (23) prior to oxidation, and an end (24) of a zone that is decarburized in the steel product, D is a diffusion coefficient for carbon in steel, at temperature T, k is a correction coefficient, and ∆t is a time step duration.
A non-oriented electrical steel sheet having a composition including the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.15%≤Manganese≤0.7%, 3%≤Silicon≤3.6%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn≤5.5%, and can contain various optional elements, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 30 to 40% when calculated in accordance with Bertotti method.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
H01F 1/147 - Alloys characterised by their composition
88.
Steel sheet for manufacturing press hardened parts, press hardened part having a combination of high strength and crash ductility, and manufacturing methods thereof
A steel sheet for the manufacture of a press hardened part is provided, having a composition of: 0.15%≤C≤0.22%, 3.5%≤Mn<4.2%, 0.001%≤Si≤1.5%, 0.020%≤Al≤0.9%, 0.001%≤Cr≤1%, 0.001%≤Mo≤0.3%, 0.001%≤Ti≤0.040%, 0.0003%≤B≤0.004%, 0.001%≤Nb≤0.060%, 0.001%≤N≤0.009%, 0.0005%≤S≤0.003%, 0.001%≤P≤0.020%. A microstructure has less than 50% ferrite, 1% to 20% retained austenite, cementite, such that the surface density of cementite particles larger than 60 nm is lower than 10{circumflex over ( )}7/mm2, and a complement of bainite and/or martensite, the retained austenite having an average Mn content of at least 1.1*Mn %. Press-hardened steel part obtained by hot forming the steel sheet, and manufacturing methods thereof.
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.18%≤Manganese≤0.5%, 3.1%≤Silicon≤3.8%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn≤5.5%, and can contain various optional elements the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 34% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.60 T to 1.65 T.
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 composition including of the following elements, expressed in percentage by weight: 0.0001%≤Carbon≤0.007%, 0.17%≤Manganese≤0.4%, 3%≤Silicon≤3.6%, 0.7%≤Aluminum≤1.3%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn≤5.5% and can contain various optional elements the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including 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 25% when calculated in accordance of Bertotti method.
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 is related to a method to produce an agglomerated direct reduced iron product (14) comprising the reduction of iron ore (10) in a direct reduction furnace (1) using a reducing gas (11) to produce a hot direct reduced iron (12) having a temperature from 500°C to 1000°C, agglomeration of the hot direct reduced iron (12) together with added solid carbon (13) to form an agglomerated direct reduced iron product (14).
The invention relates to a steelmaking method comprising the following successive steps: a. feeding an electrical furnace with an initial load consisting of 0 to 50 wt.% of pig iron or hot metal, 0 to 50 wt.% of scraps, and at least 50 wt.% of reduced iron, the respective load content in sulfur and titanium being below 100 ppm in weight after melting down, b. tapping the melted load in a ladle and submitting it to a decarburization step without prior deoxidation, then to an alloying step and then to a desulfurization step, then to an optional final alloying step to obtain a liquid steel having a sulfur content below 30 ppm in weight, a titanium content below 100 ppm in weight and a carbon content below 50 ppm in weight, c. casting said liquid steel.
The invention relates to a steelmaking method comprising the following successive steps: − producing hot metal in a blast furnace, the content in sulfur of said hot metal being below 500 ppm in weight, − tapping said hot metal in a vessel and submitting it to a first desulfurization step by adding desulfurization agents and creating a slag layer to which part of said sulfur is transferred to reach a content of sulfur below 50 ppm in weight in the hot metal, − removing said slag and transferring the hot metal into a BOF and submitting it to a first decarburization step, − tapping the resulting liquid steel into a ladle and submitting it to a second decarburization step, − performing an alloying step, − performing a second desulfurization step, − proceeding to an optional final alloying step using ferro-alloys containing less than 300 ppm in weight of titanium, to obtain a liquid steel having a sulfur content below 30 ppm in weight, a titanium content below 100 ppm in weight and a carbon content below 50 ppm in weight, − casting said liquid steel.
Steel part having a chemical composition comprising, by weight %, 0.18 ≤ C ≤ 0.27, 0.18 ≤ Si ≤ 0.30, 1.0 ≤ Mn ≤ 1.5, 0.14 ≤ Cr ≤ 0.25, 0.02 ≤ Al ≤ 0.06, 0.02 ≤ Ti ≤ 0.06, 0.0020 ≤ B ≤ 0.0040, 0 ≤ S ≤ 0.008, 0 ≤ N ≤ 0.020, the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, having a microstructure comprising, in surface fraction, 95% or more of martensite and a prior austenite grain skin refinement ratio equal to or above 1.2, said ratio being defined as PAGS_B / PAGS_S, wherein PAGS_B is the average prior austenite grain diameter in the bulk (3) expressed in µm and PAGS_S is the average prior austenite grain diameter in the skin (2), also expressed in µm.
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
B21D 22/02 - Stamping using rigid devices or tools
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
C21D 1/18 - HardeningQuenching with or without subsequent tempering
Steel part having a chemical composition comprising, by weight %, 0.18 ≤ C ≤ 0.27, 0.18 ≤ Si ≤ 0.30, 1.0 ≤ Mn ≤ 1.5, 0.14 ≤ Cr ≤ 0.25, 0.02 ≤ Al ≤ 0.06, 0.02 ≤ Ti ≤ 0.06, 0.0020 ≤ B ≤ 0.0040, 0 ≤ S ≤ 0.008, 0.008 ≤ N ≤ 0.020, the remainder of the composition being iron and unavoidable impurities resulting from the elaboration process, having a microstructure comprising, in surface fraction, 95% or more of martensite, wherein the surface fraction of TiN particles in the skin portion is equal to or greater than 200*10-6 inclusions / mm² and the average equivalent diameter of said TiN particles in the skin portion is equal to or smaller than 2.0 microns.
An ironmaking method wherein hot metal and a blast furnace top gas are produced in a blast furnace, said method comprising the steps of capturing at least a part of the blast furnace top gas, separating carbon dioxide from the captured blast furnace top gas so as to produce a CO2-rich stream and a CO2-lean stream, injecting at least a part of the CO2-lean stream in the blast furnace, mixing the CO2-rich stream with a hydrogen makeup stream and subjecting the obtained CO2/H2 gas mixture to a reverse water gas shift reaction in a reactor to produce a reducing stream comprising carbon monoxide CO and hydrogen H2, separating H2 from the reducing stream to produce a CO-rich stream and an H2-rich stream, mixing the H2-rich stream with the CO2-rich stream or with the CO2/H2 gas mixture in the reactor and subjecting the obtained gas mixture to the reverse water gas shift reaction.
An ironmaking method comprising the production of hot metal (2) and of a blast furnace top gas (10), the method comprising the steps of capturing at least a part of the top gas (10), separating CO2 from the captured top gas (10) so as to produce a CO2-rich stream (12) and a CO2-lean stream (11), mixing the CO2-rich stream (12) with a H2 makeup stream (30) and subjecting the obtained CO2/H2 gas mixture to a reverse water gas shift reaction in a reactor (3) to produce a reducing stream (13) comprising CO and H2, separating H2 from the reducing stream to produce a CO- rich stream (14) and an H2-rich stream (15), mixing the H2-rich stream (15) with the CO2-rich stream (12) or with the CO2/H2 gas mixture in the reactor (3) and subjecting the obtained gas mixture to the reverse water gas shift reaction and feeding at least a portion of the CO-rich stream 14 (13) to at least one chemical or biochemical plant (4) to produce one or more chemical products (16).
A non-oriented electrical steel sheet having a composition of the following elements, expressed in percentage by weight 0.0001%≤Carbon≤0.007%, 0.15%≤Manganese≤0.25%, 2.9%≤Silicon≤3.4%, 0.8%≤Aluminum≤1.1%, Phosphorus≤0.15%, Sulfur≤0.006%, Nitrogen≤0.09%, with 3.85%≤Si+Al+Mn≤5.5%, and the following optional elements 0%≤Niobium≤0.1%, 0%≤Titanium≤0.1%, 0%≤Vanadium≤0.1%, 0%≤Chromium≤1%, 0%≤Molybdenum≤0.5%, 0%≤Tungsten≤0.1%, 0%≤Cobalt≤1%, 0%≤Arsenic≤0.05%, 0.001%≤Calcium≤0.01%, 0%≤Copper≤1%, 0%≤Nickel≤1%, 0%≤Boron≤0.05%, 0%≤Lead≤0.2%, 0%≤Tin≤0.2%, 0%≤Antimony≤0.2%, the remainder composition being composed of iron and unavoidable impurities caused by processing. The microstructure is made of ferrite and including 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 less than 25% and simultaneously having a magnetic polarization at 5000 A/m from 1.625 T to 1.690 T.
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 steelmaking method comprising the production of a steel product in a steelmaking furnace (1) and the emission of an exhaust gas (10) comprising at least 10% in volume of carbon dioxide CO2. The exhaust gas is at least partly recovered and subjected to a CO2 separation step to produce a CO2-rich stream (12) and a CO2-lean stream (11), the CO2-rich stream (12) is mixed with a hydrogen makeup stream (30) and the obtained CO2/H2 gas mixture subjected to a reverse water gas shift reaction in a reactor (3) to produce a reducing stream (13) comprising carbon monoxide CO and hydrogen H2.
An ironmaking method wherein hot metal and a blast furnace top gas are produced in a blast furnace, said method comprising the steps of capturing at least a part of the blast furnace top gas, separating carbon dioxide from the captured blast furnace top gas so as to produce a CO2-rich stream and a CO2-lean stream, injecting at least a part of the CO2- lean stream in the blast furnace, mixing the CO2-rich stream with a hydrogen makeup stream and subjecting the obtained CO2/H2 gas mixture to a reverse water gas shift reaction in a reactor to produce a reducing stream comprising carbon monoxide CO and hydrogen H2, separating H2 from the reducing stream to produce a CO-rich stream and an H2-rich stream, mixing the H2-rich stream with the CO2-rich stream or with the CO2/H2 gas mixture in the reactor and subjecting the obtained gas mixture to the reverse water gas shift reaction.
