429 patents
Page 4 of 22
Utility
Method for the treatment of wastewaters
1 Aug 23
A method for the treatment of wastewaters including a cyanide compound and a metallic compound, wherein the wastewaters are subjected to a single oxidation step during which cyanides compounds are converted into carbon dioxide and nitrogen, this oxidation step including the mixing of wastewaters with a chlorine solution and an alkaline agent so as to obtain a mixture, the alkaline agent being added in such a quantity so as to maintain the pH of said mixture between 8.8 and 9.5 and the chlorine solution being added in such a quantity so as to maintain the oxydo-reduction potential of the mixture between 150 and 450 mV.
Patricia Gomez Leiva, Vanesa Menendez Delmiro, Beatriz Padilla Vivas
Filed: 13 Dec 18
Utility
Method for producing a high strength steel sheet having high ductility, formability and weldability, and obtained steel sheet
1 Aug 23
A method for producing a high-strength steel sheet having high ductility, formability and weldability includes providing a cold-rolled sheet, with a composition containing: 0.15% ≤C≤0.23%, 1.4% ≤Mn≤2.6%, 0.6% ≤Si≤1.3%, with C+Si/10≤0.30%, 0.4% ≤Al≤1.0%, with Al≥6(C+Mn/10)−2.5%, 0.010% ≤Nb≤0.035%, 0.1% ≤Mo≤0.5%, annealing the sheet at 860° C.-900° C. to obtain a structure consisting of at least 90% austenite and at least 2% intercritical ferrite, quenching to a temperature between Ms-10° C. and Ms-60° C. at a rate Vc higher than 30° C./s, heating to a temperature PT between 410° C. and 470° C. for 60 s to 130 s, hot-dip coating the sheet, and cooling to room temperature.
Pavan C. Venkatasurya, Anirban Chakraborty, Hassan Ghassemi-Armaki
Filed: 7 May 18
Utility
Method of continuous manufacturing of solidified steelmaking slag and associated device
25 Jul 23
A method of continuous manufacturing of solidified steelmaking slag including the steps of solidifying molten steelmaking slag comprising at least 2% in weight of free lime so as to produce solidified slag particles having a diameter below 1 mm, the molten steelmaking slag being put in contact with at least a first carbonation gas during such solidification, cooling the solidified slag particles down to a temperature below or equal to 300° C., in a closed chamber, the solidified slag particles being put in contact with at least one second carbonation gas during such cooling.
Eric De Coninck, Ivonne Infante, Rafael Mattos Dos Santos, Ghania Ounoughene, Thomas Van Gerven
Filed: 28 Sep 17
Utility
Method for the manufacture of graphene oxide from Kish graphite
18 Jul 23
The present invention provides a method for the manufacture of graphene oxide from Kish graphite.
Thi Tan Vu, Maria Cabanas Corrales, Abel Alvarez-Alvarez
Filed: 26 Mar 18
Utility
Rocker reinforcement for an electric vehicle
13 Jul 23
Reinforced rocker assembly having a closed section reinforcement located in the hollow volume formed between the rocker components, wherein the reinforcement is assembled to a rocker component in the transition zones between an upper horizontal wall and an upper flange of the rocker component and in the transition zones between a lower horizontal wall and a lower flange of the rocker component and wherein in the transition zones, the angles α and β formed between the flange and the branch of the reinforcement extending outwards of the rocker component are between 90° and 180°.
Dan HASENPOUTH, Yohan MERDJI, Joël WILSIUS
Filed: 18 May 20
Utility
Cold Rolled and Annealed Steel Sheet, Method of Production Thereof and Use of Such Steel to Produce Vehicle Parts
13 Jul 23
A cold rolled and annealed steel sheet includes by weight: 0.6≤C≤1.3%, 15.0≤Mn≤35%, 5≤Al≤15%, Si≤2.40%, S≤0.03%, P≤0.1%, N≤0.1%, possibly one or more optional elements chosen among Ni, Cr and Cu in an respective amount of up to 4.0%, up to 3.0% and up to 3.0% and possibly one or more elements chosen among B, Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0%, the remainder of the composition making up of iron and inevitable impurities resulting from the elaboration, the microstructure of the sheet including optionally up to 3% of kappa carbides, optionally up to 10.0% of granular ferrite, the remainder being made of austenite, the average grain size and average aspect ratio of the austenite being respectively below 6 μm and comprised between 1.5 and 6 and the average grain size and average aspect ratio of the ferrite, when present, being respectively below 5 μm and below 3.0.
Michel SOLER, Xavier GARAT
Filed: 22 Mar 23
Utility
Method for manufacturing a high-strength steel sheet and sheet obtained by the method
4 Jul 23
A method is 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 CMnIndex=C×(1+Mn/3.5)≤0.6.
Wei Xu, Artem Arlazarov
Filed: 4 Sep 20
Utility
Method of dynamical adjustment for manufacturing a thermally treated steel sheet
4 Jul 23
Frédéric Bonnet
Filed: 20 Dec 17
Utility
Method for dip-coating a metal strip
4 Jul 23
Equipment for the continuous hot dip-coating of a metal strip 9 including an annealing furnace, a tank 2 containing a liquid metal bath 3, a snout connecting the annealing furnace and tank 2, through which the metal strip 9 runs in a protective atmosphere and the lower part of the snout, the sabot 5, is at least partly immersed in the liquid metal bath 3 in order to define with the surface of the bath, and inside this snout, a liquid seal 6, an overflow 7 not connected to the snout, the overflow 7 including at least one tray 8, placed in the vicinity of the strip 9 when entering the liquid metal bath 3 and encompassed by liquid seal 6.
Angel Garcia Martino, Inocencio Garcia-Chapa
Filed: 14 Feb 19
Utility
Steel sheet for manufacturing press hardened parts, press hardened part having a combination of high strength and crash ductility, and manufacturing methods thereof
29 Jun 23
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%.
Martin BEAUVAIS, Alice DUMONT, Alexandre GIBOT, Astrid PERLADE, Kangying ZHU
Filed: 1 Mar 23
Utility
Steel sheet for manufacturing press hardened parts, press hardened part having a combination of high strength and crash ductility, and manufacturing methods thereof
29 Jun 23
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%.
Martin BEAUVAIS, Alice DUMONT, Alexandre GIBOT, Astrid PERLADE, Kangying ZHU
Filed: 1 Mar 23
Utility
Method for Maintaining the Optimal Amount of Inert Gas Being Injected into Cast Steel
29 Jun 23
A method for maintaining the optimal argon injection flow rate which will result in production of steel slab of a chosen alloy having optimal cleanliness.
Michael MASLEID, Bruce Ross FORMAN, Bernard O. CHUKWULEBE
Filed: 20 Apr 20
Utility
Method for forming a cold rolled, coated and post batch annealed steel sheet
30 May 23
A method for forming a cold rolled, coated and post batch annealed steel sheet is provided.
Hyun Jo Jun
Filed: 29 Oct 20
Utility
Steel reinforced concrete column
30 May 23
A steel reinforced concrete column for a high rise building comprises a plurality of hot-rolled steel sections extending longitudinally through the concrete column.
Teodora Bogdan, Jean-Claude Gerardy, Nicoleta Popa, Olivier Vassart, Donald W. Davies, Congzhen Xiao, Tao Chen, Fei Deng, Antony Wood, Dario Trabucco, Eleonora Lucchese
Filed: 14 Oct 16
Utility
Hot-dip coated steel sheet
25 May 23
The present invention relates to a method for the manufacture of a hot-dip coated steel sheet coated with a zinc or an aluminum based coating including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas and a hot-dip coating; the hot dip coated steel sheet and the use of the hot-dip coated steel sheet.
David ZAPICO ALVAREZ, Florence BERTRAND, Joris GIROUX
Filed: 23 Jan 23
Utility
Galvannealed steel sheet coated with an iron and nickel layer topped by a zinc-based layer
25 May 23
A galvannealed steel sheet having a steel substrate coated with a first alloy layer with iron and nickel directly topped by a second alloy layer based on zinc, the first and second alloyed layers being alloyed through diffusion such that the second alloy layer includes from 5 to 15 wt.% of iron, from 0 to 15 wt.% of nickel, a balance being zinc.
Anirban CHAKRABORTY, Hassan GHASSEMI-ARMAKI
Filed: 9 Jan 23
Utility
Method for the manufacturing of liquid metal embrittlement resistant galvannealed steel sheet
23 May 23
The present invention relates to a method for the manufacture of a galvannealed steel sheet including the steps of A.) coating of the steel sheet with a first coating consisting of nickel and having a thickness between 150 nm and 650 nm, the steel sheet having the following composition in weight percentage 0.10<C<0.40%, 1.5<Mn<3.0%, 0.7<Si<3.0%, 0.05<Al<1.0%, 0.75<(Si+Al)<3.0%, and on a purely optional basis, one or more elements such as Nb≤0.5%, B≤0.010%, Cr≤1.0%, Mo≤0.50%, Ni≤1.0%, Ti≤0.5%, the remainder of the composition is made up of iron and inevitable impurities resulting from the elaboration, B.) annealing of the coated steel sheet being annealed at a temperature between 600 to 1200° C., C.) coating of the steel sheet obtained in step B.) with a second coating based on zinc and D.) an alloying heat treatment to form a galvannealed steel sheet.
Christian Allely, Pascal Bertho, Anirban Chakraborty, Hassan Ghassemi-Armaki
Filed: 25 Apr 18
Utility
Tempered and coated steel sheet having excellent formability and a method of manufacturing the same
23 May 23
Jean-Marc Pipard, Marc Olivier Thenot
Filed: 15 Dec 17
Utility
Steel Sheet Having Excellent Toughness, Ductility and Strength, and Manufacturing Method Thereof
18 May 23
A cold-rolled and heat treated steel sheet, has a composition comprising 0.1% ≤ C≤0.4%, 3.5%≤Mn≤8.0%, 0.1%≤Si≤1.5%, Al≤ 3%, Mo≤0.5%, Cr≤1%, Nb≤0.1%, Ti≤0.1 %, V≤0.2%, B≤0.004%, 0.002%≤N≤0.013%, S≤0.003%, P≤0.015%.
Coralie JUNG, Astrid PERLADE, Kangying ZHU, Frédéric KEGEL
Filed: 16 Jan 23
Utility
Zinc-coated steel sheet with high resistance spot weldability
16 May 23
A method for producing a zinc or zinc-alloy coated steel sheet with a tensile strength higher than 900 MPa, for the fabrication of resistance spot welds containing in average not more than two Liquid Metal Embrittlement cracks per weld having a depth of 100 μm or more, with steps of providing a cold-rolled steel sheet, heating cold-rolled steel sheet up to a temperature T1 between 550° C. and Ac1+50° C. in a furnace zone with an atmosphere (A1) containing from 2 to 15% hydrogen by volume, so that the iron is not oxidized, then adding in the furnace atmosphere, water steam or oxygen with an injection flow rate Q higher than (0.07%/h×α), α being equal to 1 if said element is water steam or equal to 0.52 if said element is oxygen, at a temperature T≥T1, so to obtain an atmosphere (A2) with a dew point DP2 between −15° C. and the temperature Te of the iron/iron oxide equilibrium dew point, then heating the sheet from temperature T1 up to a temperature T2 between 720° C. and 1000° C. in a furnace zone under an atmosphere (A2) of nitrogen containing from 2 to 15% hydrogen and more than 0.1% CO by volume, with an oxygen partial pressure higher than 10−21 atm., wherein the duration tD of heating of the sheet from temperature T1 up to the end of soaking at temperature T2 is between 100 and 500 s., soaking the sheet at T2, then cooling the sheet at a rate between 10 and 400° C./s, then coating the sheet with zinc or zinc-alloy coating.
Jean-Marc Pipard, Sebastien Cremel, Anirban Chakraborty, Damon Panahi, Olga Girina, Hassan Ghassemi-Armaki, Pavan Challa Venkata Surya, Yacine Benlatreche
Filed: 13 Jun 18