429 patents
Page 8 of 22
Utility
A press hardening method
1 Dec 22
A press hardening method includes the following steps: A. the provision of a steel sheet for heat treatment, precoated with a zinc- or aluminum-based pre-coating for anti-corrosion purpose, B. the deposition of a hydrogen barrier pre-coating over a thickness from 10 to 550 nm, C. the batch annealing of the precoated steel sheet in an inert atmosphere to obtain a pre-alloyed steel sheet, D. the cutting of the pre-alloyed steel sheet to obtain blank, E. the thermal treatment of the blank to obtain a fully austenitic microstructure in the steel, F. the transfer of the blank into a press tool, G. the hot-forming of the blank to obtain a part, H. the cooling of the part obtained at step G).
Raisa GRIGORIEVA, Florin DUMINICA, Brahim NABI, Pascal DRILLET, Thierry STUREL
Filed: 20 Oct 20
Utility
Press hardening method
1 Dec 22
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).
Raisa GRIGORIEVA, Florin DUMINICA, Brahim NABI, Pascal DRILLET, Thierry STUREL
Filed: 20 Oct 20
Utility
A press hardening method
1 Dec 22
A press hardening method including: A. provision of a steel sheet for heat treatment, being optionally precoated with a zinc- or aluminum-based pre-coating, B. deposition of a hydrogen barrier pre-coating comprising chromium and not comprising nickel over a thickness from 10 to 550 nm, C. cutting of the precoated steel sheet to obtain a blank, D. heat treatment of the blank at a furnace temperature from 800 to 970° C., during a dwell time from 1 to 12 minutes, in an atmosphere having an oxidizing power equal or higher than that of an atmosphere consisting of 1% by volume of oxygen and equal or smaller than that of an atmosphere consisting of 50% by volume of oxygen, such atmosphere having a dew point between −30 and +30° C., E. transfer of the blank into a press tool, F. hot-forming at a temperature from 600 to 830° C. to obtain a part, G. cooling of the part obtained at step E).
Raisa GRIGORIEVA, Florin DUMINICA, Brahim NABI, Pascal DRILLET, Thierry STUREL
Filed: 20 Oct 20
Utility
Reinforced carrier device for a battery pack and process for the assembling of a reinforced battery pack
1 Dec 22
A carrier device including a reinforcement arrangement (9) including: at least two adjacent reinforcement hollow portions (24, 25) both being traversed by the side wall (3) of the carrier device (2) and each made of an inner reinforcement hollow section (26, 27) of the inner reinforcement piece (14) and an outer reinforcement hollow (28, 29) section of the outer reinforcement piece (19), both reinforcement hollow sections being at least partially facing each other, and a longitudinal reinforcement fastening portion (30) located between the adjacent reinforcement hollow portions (24, 25), secured to the side wall (3), and made of an inner reinforcement fastening section (31) of the inner reinforcement piece (14) and an outer reinforcement fastening section (32) of the outer reinforcement piece (19), both reinforcement fastening sections (31, 32) being at least partially facing each other.
Nicolas SCHNEIDER
Filed: 24 Dec 19
Utility
Method for producing an ultra high strength galvannealed steel sheet and obtained galvannealed steel sheet
29 Nov 22
A method for producing a coated steel sheet having a tensile strength TS of at least 1450 MPa and a total elongation TE of at least 17% includes the successive steps of providing a cold rolled steel sheet made of a steel having a chemical composition comprising, in weight %: 0.34%≤C≤0.45%, 1.50%≤Mn≤2.30%, 1.50≤Si≤2.40%, 0%<Cr≤0.7%, 0%≤Mo≤0.3%, 0.10%≤Al≤0.7%, and optionally 0%≤Nb≤0.05%, the remainder being Fe and unavoidable impurities, annealing the cold-rolled steel sheet at an annealing temperature AT higher than the Ac3 transformation point of the steel, quenching the annealed steel sheet by cooling it down to a quenching temperature QT lower than the Ms transformation point of the steel and comprised between 150° C. and 250° C., and reheating the quenched steel sheet to a partitioning temperature PT between 350° C. and 450° C. and maintaining the steel sheet at the partitioning temperature PT for a partitioning time Pt of at least 80 s, and coating the steel sheet by galvannealing, with an alloying temperature GAT comprised between 470° C. and 520° C.
Olga A. Girina, Damon Panahi
Filed: 2 Nov 20
Utility
System and method for handling semi-finished metal products
24 Nov 22
A system (1) for handling semi-finished metal products (5) including a gripper (3) suitable to grasp at least one semi-finished product (5) laid on a surface (40), a conveyor configured to lift the gripping means (3) from a low position towards a high position, and a tilter (2) configured to rotate the gripper (3) in their high position around a rotation axis (X-X′).
Akshay BANSAL, Benjamin BOISSIERE, Gérard GRIFFAY, Pierre GEORGES
Filed: 2 Oct 19
Utility
Spot welded joint using high strength and high forming steel and its production method
22 Nov 22
A spot welded joint of at least two steel sheets is provided.
Astrid Perlade, Samuel Vignier, Frederic Kegel, Artem Arlazarov
Filed: 5 Mar 19
Utility
Wind turbine mast section, wind turbine mast and assembly method
15 Nov 22
A mast section (1) for a wind turbine having a longitudinal central axis (L) extending along a longitudinal direction includes at least two tubular mast elements (14) stacked along the longitudinal direction and arranged edge-to-edge at a joining plane (P).
Beatriz Ventura Garcia, Elena Di Silvestro, Emilie Dupont
Filed: 30 Jun 17
Utility
Phosphatable Part Starting from a Steel Sheet Coated with a Metallic Coating Based on Aluminum
10 Nov 22
A hardened part coated with a phosphatable coating is provided.
Tiago MACHADO AMORIM, Christian ALLELY, Gregory LEUILLIER
Filed: 18 Jul 22
Utility
Method for producing a high strength coated steel sheet having improved strength, ductility and formability
8 Nov 22
A method is 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.
Rashmi Ranjan Mohanty, Hyun Jo Jun, Dongwei Fan
Filed: 16 Jul 20
Utility
Vacuum deposition facility and method for coating a substrate
8 Nov 22
A Method for continuously depositing, on a running substrate, coatings formed from at least one metal inside a vacuum deposition facility including a vacuum chamber; a substrate coated with at least one metal on both sides of the substrate having an average thickness, wherein the coating is deposited homogenously such that the maximum thickness of the coating can exceed the average thickness of 15% maximum.
Eric Silberberg, Sergio Pace, Remy Bonnemann
Filed: 23 Apr 19
Utility
Hot-Formed Previously Welded Steel Part with very High Mechanical Resistance and Production Method
3 Nov 22
A welded steel part with a very high mechanical strength is provided.
Laurent Cretteur, Qingdong Yin, Francis Schmit, Wolfram Ehling
Filed: 19 Jul 22
Utility
Cold rolled and annealed steel sheet, method of production thereof and use of such steel to produce vehicle parts
1 Nov 22
A cold rolled and annealed steel sheet includes by weight: 0.6<C<1.3%,15.0<Mn<35%, 6.0<Al<15%, Si<2.40%, S<0.015%, P<0.1%, N<0.1%, iron and inevitable impurities, optionally one or more of Ni, Cr and Cu in an individual amount of up to 3% and optionally one or more of B, Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0%, a microstructure of the sheet comprising at least 0.1% of intragranular kappa carbides, at least 80% of the kappa carbides have an average size below 30 nm, the remainder being made of austenite, an average grain size of the austenite being below 6 μm, an average aspect ratio of the austenite being between 1.5 and 6, an average grain size of the ferrite, when present being below 5 μm, and an average aspect ratio of the ferrite, when present, being below 3.0.
Michel Soler, Ian Alberto Zuazo Rodriguez, Irène De Diego Calderon
Filed: 23 May 17
Utility
Heat Treated Cold Rolled Steel Sheet and a Method of Manufacturing Thereof
27 Oct 22
A heat treated cold rolled steel sheet having a composition comprising of the following elements, 0.1%≤Carbon≤0.25, 2.15%≤Manganese≤3.0%, 1%≤Silicon≤0.8%, 0.1%≤Aluminum≤0.9%, 0.05%≤Chromium≤0.5%, 0%≤, Phosphorus≤0.09%, 0%≤Sulfur≤0.09%, 0%≤Nitrogen≤0.09%, 2.4%≤C+Mn≤3%, 0%≤Niobium≤0.1%, 0% ≤Titanium≤0.1%, 0%≤Vanadium≤0.1%, 0%≤Molybdenum≤1%, 0%≤Nickel≤1%, 0%≤Calcium≤0.005%, 0%≤Boron≤0.01%, 0%≤Cerium≤0.1%, 0%≤Magnesium≤0.05%, 0%≤Zirconium≤0.05% the remainder being composed of iron and unavoidable impurities, the microstructure of said steel sheet including, 20% to 70% Martensite, 5 to 60% of Inter-critical Ferrite, 5 to 30% of Transformed Ferrite, 8% to 20% of Residual Austenite and 1 to 20% Bainite, wherein the cumulated amount of Inter-critical and Transformed Ferrite is between 15% and 65%.
Pascal LORENZINI
Filed: 10 Dec 20
Utility
Rear Structure for an Electric Vehicle
20 Oct 22
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.
Alexandre SOTTY, Elie GIBEAU, Nicolas SCHNEIDER, Yves DROUADAINE
Filed: 31 Jul 20
Utility
Method for producing high-strength steel parts with improved ductility, and parts obtained by said method
18 Oct 22
Sebastian Cobo, Christian Allely, Martin Beauvais, Anis Aouafi, Emmanuel Lucas
Filed: 30 May 18
Utility
Cold Rolled and Coated Steel Sheet and a Method of Manufacturing Thereof
13 Oct 22
A cold rolled and coated steel sheet having a composition including of the following elements, 0.12%≤Carbon≤0.2%, 1.7%≤Manganese≤2.10%, 0.1%≤Silicon≤0.5%, 0.1%≤Aluminum≤0.8%, 0.1%≤Chromium≤0.5%, 0%≤Phosphorus≤0.09%, 0%≤Sulfur≤0.09%, 0%≤Nitrogen≤0.09%, Nickel≤3%, Niobium≤0.1%, Titanium≤0.1%, Calcium≤0.005%, Copper≤2%, Molybdenum≤0.5%, Vanadium≤0.1%, Boron≤0.003%, Cerium≤0.1%, Magnesium≤0.010%, Zirconium≤0.010% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet including in area fraction, 10 to 60% Bainite, 25 to 55% Ferrite, 5% to 15% Residual Austenite wherein carbon content in residual austenite is between 0.7% and 1% and 5% to 18% Martensite, wherein the cumulated amount of Bainite and Ferrite is at least 70%.
Pascal LORENZINI
Filed: 2 Apr 20
Utility
High strength steel sheet having excellent formability and a method of manufacturing the steel sheet
11 Oct 22
A cold rolled and heat treated steel sheet is provided.
Elena Uta, Veronique Hebert
Filed: 17 Jan 17
Utility
Method of producing press-hardened and coated steel parts at a high productivity rate
11 Oct 22
A fabrication method for a press hardened part is provided.
Michel Sanadres, Christine Dessain
Filed: 23 Apr 20
Utility
Method for the manufacture of a coated steel sheet
11 Oct 22
Method for the manufacture of a coated steel sheet including the following step of A) the provision of a pre-coated steel sheet coating with a first coating including iron and nickel, B) the thermal treatment of such pre-coated steel sheet at a temperature between 600 and 1000° C., and C) the coating of the steel sheet obtained in step B) with a second coating based on zinc.
Anirban Chakraborty, Hassan Ghassemi-Armaki
Filed: 19 Oct 18