Invention Application
- Patent Title: METHOD OF FORMING A SHEET STEEL WORKPIECE
- Patent Title (中): 形成钢铁工件的方法
-
Application No.: US14838026Application Date: 2015-08-27
-
Publication No.: US20160067763A1Publication Date: 2016-03-10
- Inventor: Stéphane GRAFF , David PIERONEK , Markus ZÖRNACK
- Applicant: THYSSENKRUPP STEEL EUROPE AG , THYSSENKRUPP AG
- Applicant Address: DE Essen DE Duisburg
- Assignee: THYSSENKRUPP AG,THYSSENKRUPP STEEL EUROPE AG
- Current Assignee: THYSSENKRUPP AG,THYSSENKRUPP STEEL EUROPE AG
- Current Assignee Address: DE Essen DE Duisburg
- Priority: DE102014112755.2 20140904
- Main IPC: B21D53/30
- IPC: B21D53/30 ; C21D1/06 ; C21D6/00 ; B21B1/38

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
- US10118213B2 Method of forming a sheet steel workpiece Public/Granted day:2018-11-06
Information query