Invention Grant
- Patent Title: Method for producing a component from steel by hot forming
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Application No.: US14389072Application Date: 2013-02-27
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Publication No.: US10246758B2Publication Date: 2019-04-02
- Inventor: Friedrich Luther , Thomas Evertz , Stefan Muetze , Michael Braun
- Applicant: SALZGITTER FLACHSTAHL GMBH
- Applicant Address: DE Salzgitter
- Assignee: SALZGITTER FLACHSTAHL GMBH
- Current Assignee: SALZGITTER FLACHSTAHL GMBH
- Current Assignee Address: DE Salzgitter
- Agency: Henry M. Feiereisen LLC
- Priority: DE102012006941 20120330
- International Application: PCT/DE2013/000126 WO 20130227
- International Announcement: WO2013/143519 WO 20131003
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C23C2/06 ; C23F17/00 ; C21D1/26 ; C21D1/42 ; C21D9/48 ; C21D1/673 ; C21D8/02 ; C23C2/12

Abstract:
The invention relates to a method for producing a component from transformable steel by hot forming, in which a plate first is cut out of a strip or sheet as the pre-material, and is then heated to forming temperature and pre-formed, having an at least partially martensitic transformation structure after forming. Instead of a press mold hardening, the at least partially martensitic transformation structure is created in the pre-material, or in the plate to be formed, by austenitization and quenching already before forming, and then the thus-conditioned plate is reheated after forming, while maintaining the at least partially martensitic transformation structure, to a temperature below the Ac1 transformation temperature, and formed at this temperature.
Public/Granted literature
- US20150047753A1 METHOD FOR PRODUCING A COMPONENT FROM STEEL BY HOT FORMING Public/Granted day:2015-02-19
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