Invention Grant
- Patent Title: Method of forming a sheet steel workpiece
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Application No.: US14838026Application Date: 2015-08-27
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Publication No.: US10118213B2Publication Date: 2018-11-06
- Inventor: Stéphane Graff , David Pieronek , Markus Zörnack
- Applicant: THYSSENKRUPP STEEL EUROPE AG , THYSSENKRUPP AG
- Applicant Address: DE Duisburg DE Essen
- Assignee: THYSSENKRUPP STEEL EUROPE AG,THYSSENKRUPP AG
- Current Assignee: THYSSENKRUPP STEEL EUROPE AG,THYSSENKRUPP AG
- Current Assignee Address: DE Duisburg DE Essen
- Agency: thyssenkrupp North America, Inc.
- Priority: DE102014112755 20140904
- Main IPC: B21B1/38
- IPC: B21B1/38 ; B21D22/02 ; B21D35/00 ; B21D39/03 ; B21D53/30 ; C21D1/06 ; C21D6/00 ; C21D1/673 ; C21D7/02

Abstract:
The invention relates to a method for the forming of a workpiece, in particular a blank, composed of sheet steel, in which method the following steps are performed in succession: providing a workpiece composed of multiple steel layers which have been non-detachably connected to one another by roll-bonding and of which at least two steel layers have a different strength and/or elongation at fracture, heating the workpiece, and subjecting the workpiece to hot forming. To ensure a high strength and at the same time the easiest possible formability, the invention proposes that at least one section of the hot-formed workpiece is hardened, and that the workpiece is subsequently subjected to cold forming in the region in which the hardening has been performed. The invention also relates to a corresponding workpiece.
Public/Granted literature
- US20160067763A1 METHOD OF FORMING A SHEET STEEL WORKPIECE Public/Granted day:2016-03-10
Information query
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