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Patent Agency Ranking
公开(公告)号：US11913085B1
公开(公告)日：2024-02-27
申请号：US17965312
申请日：2022-10-13
Inventor： Zhisong Chai , Tingdong Ren , Jinlong Zhu , Wei Xu , Jianfeng Wang
CPC classification number: C21D1/673 , B21D22/022 , C21D1/18 , C22C38/02 , C22C38/04 , C22C38/18 , C21D2211/001 , C21D2211/008
Abstract: A method for preparing a press-hardened steel component is provided. The method includes forming a heated blank by heating a steel alloy blank to a first temperature in a first zone of a furnace having two or more zones, and after the heating of the steel alloy blank to the first temperature, heating the steel alloy blank to a second temperature in a second zone of the furnace. The second temperature is greater than the first temperature. The first zone has a first flow rate for a protective gas, and the second zone has a second flow rate for the protective gas that is greater than the first flow rate. The method further includes stamping and quenching the heated blank at a constant rate to a temperature between a martensite finish temperature of the steel alloy defining the steel alloy blank and room temperature to form the press-hardened steel component.
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公开(公告)号：US20250075282A1
公开(公告)日：2025-03-06
申请号：US18789217
申请日：2024-07-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Zhou WANG , Zhao Li , Wei Xu , Jianfeng Wang
IPC: C21D9/00 , B23K26/24 , B32B15/04 , B32B15/18 , C21D1/18 , C21D6/00 , C21D8/00 , C22C38/02 , C22C38/04 , C22C38/34 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58
Abstract: A method for manufacturing a component includes providing a first PHS blank including an aluminum silicon (AlSi) coating; providing a second PHS blank, wherein the second PHS blank includes chromium (Cr) at a higher concentration than the first PHS blank and does not include the aluminum silicon (AlSi) coating; welding the first PHS blank to the second PHS blank to form a welded blank including a weld seam between the first PHS blank and the second PHS blank; transferring the welded blank to a furnace; heat soaking the welded blank in the furnace at a predetermined temperature for a predetermined period; and pressing, forming, and quenching the welded blank in a stamp/press to form a component.
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公开(公告)号：US20240229182A1
公开(公告)日：2024-07-11
申请号：US18364840
申请日：2023-08-03
Applicant: GM Global Technology Operations LLC
Inventor： Zhou WANG , Zhisong Chai , Wei Xu , Jianfeng Wang
IPC: C21D9/46 , B32B15/01 , C21D1/74 , C21D1/84 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/06 , C23C2/40
CPC classification number: C21D9/46 , B32B15/013 , C21D1/74 , C21D1/84 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/008 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/06 , C23C2/40 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008
Abstract: A coated steel sheet includes a steel sheet comprising iron (Fe); carbon (C) in a range from 0.05% to 0.35 wt. %; manganese (Mn) in a range from 0.1% to less than 2 wt. %; chromium (Cr) in a range from 1.2% to 6.0 wt. %; silicon (Si) in a range from 0.01% to less than 0.6 wt. %; aluminum (Al) in a range from 0.5% to 1.3 wt. %; vanadium (V) in a range from 0.01% to 0.5 wt. %; niobium (Nb) in a range from 0.01% to 0.2 wt. %; and titanium (Ti) in a range from 0.01% to 0.3 wt. %. A zinc coating is formed on an outer surface of the steel sheet.
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公开(公告)号：US11781197B2
公开(公告)日：2023-10-10
申请号：US17889807
申请日：2022-08-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Qi Lu , Congjie Wang , Jianfeng Wang , Zhisong Chai , Wei Xu
CPC classification number: C21D9/46 , B21D22/022 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0247 , C22C38/02 , C22C38/04 , C22C38/18 , C21D2211/001 , C21D2211/008
Abstract: A method of forming a component includes providing a work-piece blank from a formable material. The work-piece blank includes at least one section having a surface roughness greater than 1 μm configured to facilitate efficient radiation of thermal energy therefrom when the work-piece blank is heated. The method also includes austenitizing the work-piece blank via heating the work-piece blank at a predetermined temperature for a predetermined amount of time to achieve an austenite microstructure in the at least one section and forestall oxidation of the work-piece blank. The method additionally includes transferring the austenitized work-piece blank into a forming press. The method also includes forming the component via the forming press from the austenitized work-piece blank. The method additionally includes quenching the component formed from the austenitized work-piece blank and cooling the formed component.
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公开(公告)号：US20230243012A1
公开(公告)日：2023-08-03
申请号：US17889807
申请日：2022-08-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Qi Lu , Congjie Wang , Jianfeng Wang , Zhisong Chai , Wei Xu
CPC classification number: C21D9/46 , B21D22/022 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0247 , C22C38/02 , C22C38/04 , C22C38/18 , C21D2211/001 , C21D2211/008
Abstract: A method of forming a component includes providing a work-piece blank from a formable material. The work-piece blank includes at least one section having a surface roughness greater than 1 µm configured to facilitate efficient radiation of thermal energy therefrom when the work-piece blank is heated. The method also includes austenitizing the work-piece blank via heating the work-piece blank at a predetermined temperature for a predetermined amount of time to achieve an austenite microstructure in the at least one section and forestall oxidation of the work-piece blank. The method additionally includes transferring the austenitized work-piece blank into a forming press. The method also includes forming the component via the forming press from the austenitized work-piece blank. The method additionally includes quenching the component formed from the austenitized work-piece blank and cooling the formed component.
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