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Arcelormittal patents


Recent patent applications related to Arcelormittal. Arcelormittal is listed as an Agent/Assignee. Note: Arcelormittal may have other listings under different names/spellings. We're not affiliated with Arcelormittal, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Arcelormittal-related inventors


High strength steel and production method

The present invention provides a cold-rolled and annealed steel sheet of thickness between 0.7 mm and 2 mm, mechanical strength ranging from 1180 mpa to 1320 mpa, wherein the hole expansion ratio ac % is greater than 20% and the bending angle is greater than or equal to 40°. The chemical composition includes, the contents being expressed as weight percent: 0.09%≤c≤0.11%, 2.6%≤mn≤2.8%, 0.20%≤si≤0.55%, 0.25%≤cr<0.5%, 0.025%≤ti≤0.040%, 0.0015%≤b≤0.0025%, 0.005%≤al≤0.18%, 0.08%≤mo≤0.15%, 0.020%≤nb≤0.040%, 0.002%≤n≤0.007%, 0.0005%≤s≤0.005%, 0.001%≤p≤0.020%, ca≤0.003%, the remainder being iron and inevitable impurities resulting from processing. ... Arcelormittal

Panel, assembly of panels and associated roof

The present invention provides a panel. The panel includes an upper transverse edge having an upper overlap area intended to be covered by an adjacent panel and a lower transverse edge having a lower overlap area intended to covered by an adjacent panel. ... Arcelormittal

Electrical connection device for a photovoltaic system

The present invention provides a building exterior cladding. The panel includes an upper overlap area, a lower overlap area and a central part, covered by at least one photovoltaic module. ... Arcelormittal

Electrical connection device for a photovoltaic system

The present invention provides a building exterior cladding panel. The panel includes an upper overlap area, a lower overlap area, and a central part covered by at least one photovoltaic module. ... Arcelormittal

Steel sheet having high tensile strength and ductility

A hot-rolled steel sheet having a tensile strength greater than 800 mpa and an elongation at break greater than 10% is provided. A composition of the steel includes, the contents being expressed by weight: 0.050%≤c≤0.090%, 1%≤mn≤2%, 0.015%≤al≤0.050%, 0.1%≤si≤0.3%, 0.10%≤mo≤0.40%, s≤0.010%, p≤0.025%, 0.003%≤n≤0.009%, 0.12%≤v≤0.22%, ti≤0.005%, nb≤0.020% and optionally, cr≤0.45%. ... Arcelormittal

Method of determining a chemical composition of a slag portion

A method of determining a chemical composition of a slag portion is provided. The method includes providing the slag portion having a surface, collecting light reflected from the surface using an optical system, obtaining a data set from the collected light, the data set at least defining a matrix containing values representative of an intensity of a part (lm,λ) of the collected light, each part being collected from one of a plurality of points at one of a plurality of wavelengths, the matrix being indexed at least by: a plurality of space coordinates of the plurality of points, and a plurality of spectral parameters representative of the plurality of wavelengths. ... Arcelormittal

Spacer for road safety barrier

The present invention provides a spacer for a road safety barrier. The spacer includes a post and a rail connected to the post via an intermediary of the spacer and a connector. ... Arcelormittal

Panel for vehicle comprising a coated steel sheet locally reinforced

The present invention provides a panel for a vehicle including a coated steel sheet locally reinforced. A method for preparing the panel and the use of the panel are also provided.. ... Arcelormittal

Wind turbine tower section, wind turbine tower and assembly method

The present invention provides a tower section for a wind turbine which includes at least two tower elements stacked and arranged edge-to-edge at a joining plane, each tower element includes at least two wall segments, connected to one another by first connectors. The tower section further includes second connectors each extending astride the two adjacent tower elements along the longitudinal direction. ... Arcelormittal

Method for manufacturing a metal sheet with a znal coating and with optimized wiping, corresponding metal sheet, part and vehicle

. . The present invention provides a deformed part created by forming a coated metal sheet into a part, the coated metal sheet comprising a steel substrate, at least one face of which is coated with a metal coating deposited by dipping the substrate in a bath, said coating comprising between 0.2 and 0.7% by weight of al, the remainder of the metal coating being zn and inevitable impurities, wherein an outer surface of a metal coating of the deformed part has a waviness wa0.8 of less than or equal to 0.43 μm.. . ... Arcelormittal

Parts with a bainitic structure having high strength properties and manufacturing process

The present invention provides a part having a composition including, with the contents being expressed in weight-percent, 0.10≦c≦0.30, 1.6≦mn≦2.1, 0.5≦cr≦1.7, 0.5≦si≦1.0, 0.065≦nb≦0.15, 0.0010≦b≦0.0050, 0.0010≦n≦0.0130, 0≦al≦0.060, 0≦mo≦1.00, 0≦ni≦1.0, 0.01≦ti≦0.07, 0≦v≦0.3, 0≦p≦0.050, 0.01≦s≦0.1, 0≦cu≦0.5, 0≦sn≦0.1. A balance of the composition includes iron and unavoidable impurities resulting from the production method. ... Arcelormittal

Method of producing a phosphatable part from a sheet coated with an aluminum-based coating and a zinc coating

A steel sheet coated with an aluminum-based coating and a second zinc coating having a thickness less than or equal to 1.1 μm is provided. A method for preparing the coated steel sheet, a method for preparing a press-hardened part from the steel sheet, a press-hardened part, and the use of the press-hardened part are also provided.. ... Arcelormittal

Post annealed high tensile strength coated steel sheet having improved yield strength and hole expansion

A cold rolled, coated and post annealed steel sheet. The cold rolled steel sheet may comprise (in wt. ... Arcelormittal

Process for manufacturing steel sheet having very high tensile strength, ductility and toughness characteristics, and sheet thus produced

. . . . . . The invention relates to a hot-rolled steel sheet having a tensile strength of greater than 1200 mpa, an re/rm ratio of less than 0.75 and an elongation at break of greater than 10%, the composition of which contains, the contents being expressed by weight: 0.10%≦c≦0.25%; 1%≦mn≦3%; al≧0.015%; si≦1.985%; mo≦0.30%; cr≦1.5%; s≦0.015%; p≦0.1%; co≦1.5%; b≦0.005%; it being understood that 1%≦si+al≦2%; cr +(3×mo)≦0.3%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel consisting of at least 75% bainite, residual austenite in an amount equal to or greater than 5% and martensite in an amount equal to or greater than 2%.. . ... Arcelormittal

01/04/18 / #20180005905

Method for the production of an optoelectronic module including a support comprising a metal substrate, a dielectric coating and a conductive layer

The invention is directed to a method for the production of an optoelectronic module including a support (5) and an additional layer, said support being formed by an assembly (25) which has no optoelectronic properties and which comprises, successively, a metal substrate (27), a dielectric coating (29) disposed on the metal substrate, and an electrically conductive layer (31) disposed on the dielectric coating. The production method comprises: a step of providing the support and performing a method in which the support is checked, or providing the support after it has already been checked; and a step of depositing at least one additional layer on the electrically conductive layer. ... Arcelormittal

01/04/18 / #20180002798

Method for producing a coated metal strip having an improved appearance

A process for manufacturing a coated metal strip having a metallic corrosion protection coating is provided. The process includes passing a metal strip through a molten metal bath comprising from 2 to 8 wt % aluminum, 0 to 5 wt % magnesium, up to 0.3 wt % additional elements, and a balance including zinc and inevitable impurities, to yield a molten metal coated metal strip, wiping the molten metal coated metal strip with a nozzle spraying a gas on either side of the molten metal coated metal strip and cooling the coating in a controlled manner until the coating has completely solidified, to obtain the coated metal strip. ... Arcelormittal

11/30/17 / #20170341187

Hot-formed previously welded steel part with very high mechanical resistance and production method

A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. ... Arcelormittal

11/23/17 / #20170333986

Steel plate for producing light structures and method for producing said plate

A steel plate, the chemical composition of which includes, the contents being expressed by weight: 0.010%≦c≦0.20%, 0.06%≦mn≦3%, si≦1.5%, 0.005%≦al≦1.5%, s≦0.030%, p≦0.040%, 2.5%≦ti≦7.2%, (0.45×ti)−0.35%≦b≦(0.45×ti)+0.70%, and optionally one or more elements chosen from: ni≦1%, mo≦1%, cr≦31, nb≦0.1%, v≦0.1%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.. . ... Arcelormittal

11/09/17 / #20170321294

Method for manufacturing a high strength steel product and steel product thereby obtained

A method for manufacturing a steel product, is provided. A heated steel starting product at a temperature between 380° c. ... Arcelormittal

10/26/17 / #20170304952

Hot-formed previously welded steel part with very high mechanical resistance and production method

A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. ... Arcelormittal

10/12/17 / #20170291646

Automotive vehicle structural part and method of producing the same

The automotive vehicle structural part (30) includes at least a main panel (40) and a wheel casing (42), the main panel (40) and the wheel casing (42) being made of two distinct three-dimensional parts made of different materials attached to each other by welding.. . ... Arcelormittal

10/12/17 / #20170291476

Reinforcement element for a vehicle, method for producing the same and door assembly

The reinforcement element for reinforcing the structure of a door of a vehicle extends along a main direction and comprises at least a main portion having a reinforcing cross-section (40) extending in a plane substantially perpendicular to the main direction. The reinforcing cross-section (40) includes at least four adjacent branches (42a, 42b, 42c, 42d, 42e, 42f, 42g ), each extending in different directions, two successive branches forming a non-zero angle, at least two of the non-zero angles being of opposite signs.. ... Arcelormittal

09/21/17 / #20170268078

Method of producing press-hardened and coated steel parts at a high productivity rate

. . A sheet or blank is provided which includes a substrate and pre-coating on at least one face of the substrate. A polymerized layer overlies at least a part of the pre-coating and has a thickness from 2 μm to 30 μm, a nitrogen content of less than 1% by weight, carbon pigments in a quantity from 3 to 30% by weight and does not include a polymer with silicon. ... Arcelormittal

09/21/17 / #20170266761

Method for the preparation of aluminized steel sheets to be welded and then press hardened

A method for the preparation of steel sheets for fabricating a welded steel blank is provided. The method includes procuring at least two pre-coated steel sheets, each having a pre-coating of an intermetallic alloy layer, topped by a layer of aluminum metal or aluminum alloy or aluminum-based alloy. ... Arcelormittal

09/14/17 / #20170260603

Coated steel strips, coated stamped products and methods

A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. ... Arcelormittal

09/14/17 / #20170260599

Precoated sheets for manufacturing press-hardened coated steel parts

A cold-rolled sheet is provided. The cold-rolled sheet includes a steel substrate with a carbon content c0 between 0.07% and 0.5%, expressed by weight, and a metal pre-coating on at least the two principal faces of the steel substrate. ... Arcelormittal

09/07/17 / #20170253280

Method for producing a door element of an automotive vehicle and door element of an automotive vehicle

. . A method for producing a door element comprising a planar panel (30) and protruding edges (32a, 32b, 32c), each edge (32a, 32b, 32c) being joined to at least one adjacent edge (32a, 32b, 32c) by a joining edge, comprising:—providing a rectangular planar blank,—cutting out said blank to retrieve a corner part being adapted to form a joining edge (34),—stamping the cut-out blank to obtain a door element part (52) comprising the panel (30) and the edges (32a, 32b, 32c), said edges (32a, 32b, 32c) being separated one from the others,—joining the adjacent edges (32a, 32b, 32c) by attaching a joining part (54) to the door element part, said joining part (54) being made of a material different from the material of the door element part (52) and forming a joining edge.. . ... Arcelormittal

08/31/17 / #20170247071

Methods for producing a three-dimensional vehicle door frame inner reinforcement element, for producing a vehicle door frame and for producing a vehicle reinforcement structure

Methods for producing a three-dimensional vehicle door frame inner reinforcement element, for producing a vehicle so door frame and for producing a vehicle reinforcement structure a method for producing a three-dimensional vehicle door frame inner reinforcement element (52) comprising an inner center pillar part (66), an inner front pillar part (68) and an inner side rail part (64) joining the inner center pillar part (66) and the inner front pillar part (68). The method comprises: providing an inner center pillar blank, an inner front pillar blank and an inner side rail blank, said inner blanks being substantially planar, assembling the inner center pillar blank and the inner front pillar blank to the inner side rail blank in order to form a substantially planar door frame inner reinforcement blank, hot stamping the door frame inner reinforcement blank to shape the three- dimensional door frame inner reinforcement element (52).. ... Arcelormittal

08/31/17 / #20170247056

Vehicle front body structure

The vehicle front body structure (2) comprises an upper longitudinal beam (10, 12) and a reinforcing element (14,16) for reinforcing the wheel casing of the vehicle, said reinforcing element (14, 16) extending in a longitudinal direction substantially parallel to the upper longitudinal beam (10, 12), said upper longitudinal beam (10, 12) comprising an attachment portion (40), comprising an attachment area for attaching a connecting element (8) joining the upper longitudinal beam (10, 12) to a lower beam (22, 24) of the vehicle. The vehicle front body structure (2) further comprises a linking element (18, 20) joining the reinforcing element (14, 16) and the upper longitudinal beam (10, 12). ... Arcelormittal

08/17/17 / #20170233847

Method for producing a coated steel sheet having improved strength, ductility and formability

The invention relates to a method for producing a high strength coated steel sheet having a yield stress ys>550 mpa, a tensile strength ts>980 mpa, and improved formability and ductility. The steel contains: 0.15%≦c≦0.25%, 1.2%≦si≦1.8%, 2%≦mn≦2.4%, 0.1%≦cr≦0.25%, al≦0.5%, the balance being fe and unavoidable impurities. ... Arcelormittal

08/17/17 / #20170232560

Steel part

A formed steel part is provided. The formed steel part includes a first steel plate having a first base, a first intermetallic alloy layer on the first base and a first metal alloy layer on the first intermetallic alloy layer, the first steel part having a first area without the first metal alloy layer and having at least part of the first intermetallic alloy layer; and a second steel plate having a second base, a second intermetallic alloy layer on the second base and a second metal alloy layer on the second intermetallic alloy layer, the second steel part having a second area without the second metal alloy layer and having at least part of the second intermetallic alloy layer in the second area. ... Arcelormittal

07/13/17 / #20170198685

Pusher pump resistant to corrosion by molten aluminum and having an improved flow profile

A bubble pump having a steel tube pump body having an interior formed from a ceramic material that resists attack by molten metal. The pump further has a nitrogen supply line attached to a lower portion of the pump body. ... Arcelormittal

07/13/17 / #20170198374

Steel sheet provided with a coating providing sacrificial cathodic protection comprising lanthane

A steel sheet is provided with a coating providing sacrificial cathodic protection. The coating includes between 1 and 40% by weight zinc, between 0.01 and 0.4% by weight lanthanum, optionally up to 10% by weight magnesium, optionally up to 15% by weight silicon, and optionally up to 0.3% by weight, in cumulative amounts, of additional components, the remainder includes aluminum and unavoidable impurities or residual elements. ... Arcelormittal

06/22/17 / #20170175243

Method for hot-dip coating a steel strip and facility for implementing same

. . A method for hot-dip coating of a steel strip running in a bath of liquid metal such as zinc, or metal alloy contained in a pan is provided. Dross which are formed during the coating and float at the surface of the bath are moved away from the surface of the strip by at least one inductor. ... Arcelormittal

06/15/17 / #20170170775

Panel, panel assembly and associated roofing

A panel has a profile with width l1 comprising a first longitudinal edge comprising in succession a first longitudinal rib comprising a top center part having a height h4 and width l4 and two lateral wings that extend from the top center part on either side and downward, then a first flange having a width l3 oriented in a plane p, the two lateral wings forming an angle α with the plane p, at least one projecting part in the extension of the first flange. An upper plateau having a height h7 and width l7 and two lateral webs extending from the upper plateau on either side and downward, forming an angle β with the plane p, a second longitudinal edge in the extension of one of the projecting parts comprising in succession a second flange having a width l9 oriented in the plane p and a second longitudinal rib comprising a top center part having a height h11 and width l11 and two lateral wings extending from the top center part on either side and downward forming an angle γ with the plane p. ... Arcelormittal

06/15/17 / #20170166991

Part with very high mechanical properties from a rolled coated sheet

The present invention provides a steel part. The steel part includes a steel precoated with a zinc-based alloy including, the contents being expressed by weight, from 0.5 to 2.5% aluminum and, optionally, one or more elements chosen from the group of: pb≦0.003%; sb≦0.003%; bi≦0.003%; 0.002%.≦si≦0.070%; la<0.05%; and ce<0.05%. ... Arcelormittal

06/08/17 / #20170159143

Method for manufacturing a high strength steel sheet having improved formability and ductility and sheet obtained

A method for manufacturing a high-strength sheet having improved formability and ductility accord which the chemical composition of the steel contains, in percent by weight: 0.25%<c≦0.4% 2.3%≦mn≦3.5% 2.3%≦si≦3% al≦0.040% the remainder being fe and unavoidable impurities, the method comprising the steps of annealing a rolled sheet made of said steel by soaking it at an annealing temperature at higher than the ac3 transformation point of the steel, quenching the sheet by cooling it down to a quenching temperature qt between ms−65° c. And ms−115° c., being in order to obtain a final structure containing at least 65% of martensite and at least 5% of residual austenite, the sum of the ferrite and bainite contents being less than 10%, ms being the ms transformation point of the steel according to the andrews formula, heating the sheet up to an overaging temperature pt between 360° c. ... Arcelormittal

06/01/17 / #20170155359

Panel equipped with a photovoltaic device

The present invention provides a panel equipped with a photovoltaic device including an even number of columns of photovoltaic modules, the columns being aligned essentially parallel to a longitudinal edge of the panel. Each column includes an electrical pole on each of extremity. ... Arcelormittal

06/01/17 / #20170155357

Panel equipped with a photovoltaic device

The present invention provides a panel equipped with a photovoltaic device including an even number of columns of photovoltaic modules, the columns being aligned essentially parallel to a longitudinal edge of the panel. Each column includes an electrical pole on each extremity. ... Arcelormittal

06/01/17 / #20170152581

Multipurpose processing line for heat treating and hot dip coating a steel strip

A multipurpose continuous processing line able for heat treating and hot dip coating a steel strip comprising: —an annealing section (1) for heating the steel strip to a predetermined annealing temperature and for maintaining the steel strip at said annealing temperature, —a first transfer section (2), —an overaging section (3) able to maintain the temperature of the steel strip between 300° c. And 700° c., —a second transfer section (4) able to adjust the temperature of the steel strip to allow the hot dip coating of the strip and, —a hot dip coating section (5), wherein the first transfer section (2) comprises, in sequence, cooling means (21) and heating means (22).. ... Arcelormittal

06/01/17 / #20170152579

Method for producing a high strength coated steel sheet having improved strength, ductility and formability

A method for producing a high strength coated steel sheet having a yield stress ys>800 mpa, a tensile strength ts>1180 mpa, and improved formability and ductility. The steel contains: 15%≦c≦0.25%, 1.2%≦si≦1.8%, 2%≦mn≦2.4%, 0.1% 23 cr≦0.25%, al≦0.5%, the remainder being fe and unavoidable impurities. ... Arcelormittal

05/18/17 / #20170137910

Method for producing an ultra high strength coated or not coated steel sheet and obtained sheet

A method for producing a cold rolled steel sheet having a tensile strength≧1470 mpa and a total elongation te≧19%, the method comprising the steps of annealing at an annealing temperature at≧ac3 a non-treated steel sheet whose chemical composition contains in weight %: 0.34%≦c≦0.40%, 1.50%≦mn≦2.30%, 1.50≦si≦2.40%, 0%≦cr≦0.7%, 0%≦mo≦0.3%, 0.01%≦al≦0.07%, the remainder being fe and unavoidable impurities, quenching the annealed steel sheet by cooling it to a quenching temperature qt<ms transformation point and between 150° c. And 250° c., and making a partitioning treatment by re-heating the quenched steel sheet to a partitioning temperature pt between 350° c. ... Arcelormittal

05/18/17 / #20170137909

Method for manufacturing a high strength steel sheet and sheet obtained by the method

A method for manufacturing a high-strength steel sheet having a tensile strength of more than 1100 mpa and a yield strength of more than 700 mpa, a uniform elongation ue of at least 8.0% and a total elongation of at least 10%, made of a steel containing in percent by weight: 0.1%≦c≦0.25%, 4.5%≦mn≦10%, 1%≦si≦3%, 0.03%≦al≦2.5%, the remainder being fe and impurities resulting from the smelting, the composition being such that cmn index=cx(1+mn/3.5)≦0.6, the method comprising the steps of annealing a rolled sheet made of said steel by soaking it at an annealing temperature ta higher than the ac transformation point of the steel but less than 1000° c., cooling the annealed sheet to a quenching temperature qt between 190° c. And 80° c. ... Arcelormittal

05/18/17 / #20170137908

Method for producing a high strength coated steel sheet having improved strength, formability and obtained sheet

A method for producing a high strength coated steel sheet having an improved ductility and an improved formability, the chemical composition of the steel containing: 0.13%≦c≦0.22%, 1.9%≦si≦2.3%, 2.4%≦mn≦3%, al≦0.5%, ti<0.05%, nb<0.05%, the remainder being fe and unavoidable impurities. The sheet is annealed at temperature ta higher than ac3 but less than 1000° c. ... Arcelormittal

05/18/17 / #20170137907

Method for producing a high strength steel sheet having improved strength and formability and obtained sheet

A method for producing a high strength steel sheet having a yield strength ys>850 mpa, a tensile strength ts>1180 mpa, a total elongation >13% and a hole expansion ratio her>30%, by heat treating a steel sheet wherein the chemical composition of the steel contains: 0.13%≦c≦0.22%, 1.2%≦si≦1.8%, 1.8%≦mn≦2.2%, 0.10%≦mo≦0.20%, nb≦0.05%, ti<0.05%, al≦0.5%, the remainder being fe and unavoidable impurities. The sheet is annealed at an annealing temperature ta>865° c. ... Arcelormittal

05/18/17 / #20170137906

High strength multiphase steel, production method and use

The invention deals with a cold rolled and hot dip steel sheet, with a tensile strength of at least 980 mpa, with yield strength above or equal to 500 mpa, with total elongation above or equal to 8%, the composition consisting by weight percent: 0.05<c<0.15%, 2<mn≦3%, al<0.1%, 0.3<si<1.5%, 0.01%<nb<0.05%, n<0.02%, 0.1<cr+mo<1%, 0.0001<b<0.0025, ti<0.5%, v<0.01%, s<0.01%, p<0.05% the remainder of the composition being iron and unavoidable impurities resulting from the smelting and the microstructure contains, in surface fraction: between 50 and 95% of martensite and between 5 and 50% of the sum of ferrite and bainite, wherein the ferrite grain size is below 10μιτι, and wherein the aspect ratio of the ferrite grain size is between 1 and 3. The steel according to the invention is oxidized and subsequently reduced during heating, soaking and cooling steps of the annealing.. ... Arcelormittal

05/11/17 / #20170130292

Method for producing a high strength steel sheet having improved strength, ductility and formability

A method for producing a high strength steel sheet having a yield strength ys of at least 850 mpa, a tensile strength ts of at least 1180 mpa, a total elongation of at least 14% and a hole expansion ratio her of at least 30%. The chemical composition of the steel contains: 0.15%≦c≦0.25%, 1.2%≦si≦1.8%, 2%≦mn≦2.4%, 0.1%≦cr≦0.25%, nb≦0.05%, ti≦0.05%, al≦0.50%, the remainder being fe and unavoidable impurities. ... Arcelormittal

05/11/17 / #20170130291

A method for producing a high strength steel piece

A method for producing a high strength steel piece having desired mechanical properties, obtainable by a reference heat treatment comprising a first reference treatment and a final reference treatment comprising at least an overaging, the method comprising a step of heat treating on an equipment comprising at least an overaging means for which it is possible to set at least one operating point, the final treatment comprising an overaging for which it is possible to calculate two final treatment parameters oap1 and oap2 depending on an operating point of the overaging means. A minimum oap1 min and a maximum oap2 max final treatment parameters are determined in order to obtain the desired properties, at least one operating points of the overaging section means is determined such that oap1≧oap1 min and oap2≦oap2 max. ... Arcelormittal

05/11/17 / #20170130290

Method for producing a high strength coated steel sheet having improved strength and ductility and obtained sheet

A method for producing a high strength coated steel sheet having a yield strength ys of at least 800 mpa, a tensile strength ts of >1180 mpa, a total elongation >14% and a hole expansion ratio her>30%. The steel contains in weight %: 0.13%≦c≦0.22%, 1.2%≦si≦1.8%, 1.8%≦mn≦2.2%, 0.10%≦mo≦0.20%, nb≦0.05%, al≦0.5%, the remainder being fe and unavoidable impurities. ... Arcelormittal

05/04/17 / #20170120391

Method and device for preparing aluminum-coated steel sheets intended for being welded and then hardened under a press; corresponding welded blank

The present invention provides a method for the preparation of steel sheets to be fabricated into a welded steel blank. The method includes procuring at least one pre-coated first steel sheet and one pre-coated second steel sheet, made up of a steel substrate and a pre-coating made up of an intermetallic alloy layer in contact with the steel substrate, topped by a layer of aluminum metal or aluminum alloy or aluminum-based alloy, the first sheet having a principal face, an opposite principal face, and at least one secondary face, the second sheet having a principal face, an opposite principal face and at least one secondary face, positioning the first and second sheets, leaving a gap of between 0.02 and 2 mm between the secondary faces and facing each other, the mating of the first and second sheets defining a median plane perpendicular to the principal faces of the first sheet and the second sheet, then removing the layers of metal alloy by melting and vaporization simultaneously on the principal faces, in a peripheral zone of the sheets, the peripheral zones being the zones of the principal faces closest in relation to the median plane located one on either side of it.. ... Arcelormittal

04/27/17 / #20170114467

Multi-layer substrate and fabrication method

Substrate provided with a plurality of layers, at least one of which includes metal oxides and is topped directly by a metal coating layer that contains at least 8% by weight nickel and at least 10% by weight chromium, the remainder being iron, additional elements and the impurities resulting from the fabrication process, wherein this metal coating layer is topped directly by an anticorrosion coating layer. A corresponding fabrication method is also provided.. ... Arcelormittal

04/20/17 / #20170107626

Process for the manufacturing of a steel strip for packaging and associated equipment

A process for continuous manufacturing of steel strips for packaging coated with a passivation layer is provided. The layer is an aqueous passivation solution, the thickness of which is less than 3 μm and the viscosity of which is less than 1.5·10−3 pa·s at 20° c., and is deposited on one of the faces of the strip. ... Arcelormittal

04/13/17 / #20170101695

Double annealed steel sheet having high mechanical strength and ductility characteristics, method of manufacture and use of such sheets

. . The invention relates to a double-annealed steel sheet, the composition of which includes, expressed in per cent by weight, 0.20% ≦c ≦0.40%, 0.8% ≦mn ≦1.4%, 1.60% ≦si ≦3.00%, 0.015 ≦nb ≦0.150%, al ≦0.1%, cr ≦1.0%, s ≦0.006%, p ≦0.030%, ti ≦0.05%, v ≦0.05%, b ≦0.003%, n ≦0.01%, the remainder of the composition being constituted of iron and unavoidable impurities resulting from processing, the microstructure being constituted, in area percentages, of 10 to 30% residual austenite, 30 to 60% annealed martensite, 5 to 30% bainite, 10 to 30% fresh martensite and less than 10% ferrite. The invention further relates to its fabrication method and the use of such sheet.. ... Arcelormittal








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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. Freshpatents.com is not affiliated or associated with Arcelormittal in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Arcelormittal with additional patents listed. Browse our Agent directory for other possible listings. Page by FreshPatents.com

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