Invention Grant
- Patent Title: Galvannealed steel sheet
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Application No.: US16760399Application Date: 2018-10-19
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Publication No.: US11884987B2Publication Date: 2024-01-30
- Inventor: David Zapico Alvarez , Florence Bertrand , Joris Giroux
- Applicant: ARCELORMITTAL
- Applicant Address: LU Luxembourg
- Assignee: ArcelorMittal
- Current Assignee: ArcelorMittal
- Current Assignee Address: LU Luxembourg
- Agency: Davidson, Davidson & Kappel, LLC
- Priority: WO TIB2018058141 2018.10.19
- International Application: PCT/IB2018/058141 2018.10.19
- International Announcement: WO2019/092527A 2019.05.16
- Date entered country: 2020-04-29
- Main IPC: C21D9/46
- IPC: C21D9/46 ; B32B15/01 ; C21D1/26 ; C21D1/76 ; C21D6/00 ; C22C38/00 ; C22C38/02 ; C22C38/06 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50 ; C22C38/54 ; C22C38/58 ; C23C2/02 ; C23C2/06 ; C23C2/40 ; C21D9/56 ; C21D9/573 ; C22C18/04 ; C22C38/38 ; C23C2/04 ; C23C2/28 ; C22C38/14 ; C21D9/00 ; C21D1/74 ; C23C28/00
Abstract:
A method for the manufacture of a galvannealed steel sheet including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas, a hot-dip galvanizing and an alloying treatment; the galvannealed steel sheet and the use of the galvannealed steel sheet.
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