Invention Grant
- Patent Title: Method for manufacturing a metal sheet with a ZnAl coating and with optimized wiping, corresponding metal sheet, part and vehicle
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Application No.: US16874608Application Date: 2020-05-14
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Publication No.: US11572613B2Publication Date: 2023-02-07
- Inventor: Jean-Michel Mataigne , Didier Dauchelle , Florence Bertrand
- Applicant: ArcelorMittal
- Applicant Address: LU Luxembourg
- Assignee: ArcelorMittal
- Current Assignee: ArcelorMittal
- Current Assignee Address: LU Luxembourg
- Agency: Davidson, Davidson & Kappel, LLC
- Priority: WOPCT/FR2013/050479 20130306
- Main IPC: C23C2/06
- IPC: C23C2/06 ; C23C2/40 ; C23C2/04 ; C23C2/20 ; C23C2/26 ; C23C2/16 ; C23C2/34 ; C23C30/00 ; B32B15/04 ; B32B15/20 ; B32B15/01 ; C21D8/02 ; C21D7/02 ; C21D8/04 ; C21D7/13 ; C21D7/00 ; C21D8/00 ; C21D7/04 ; B32B15/18 ; C23C2/02
Abstract:
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.
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