Invention Grant
US08839652B2 Method and device for press-hardening a metallic formed structure
有权
用于加压硬化金属成形结构的方法和装置
- Patent Title: Method and device for press-hardening a metallic formed structure
- Patent Title (中): 用于加压硬化金属成形结构的方法和装置
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Application No.: US12561401Application Date: 2009-09-17
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Publication No.: US08839652B2Publication Date: 2014-09-23
- Inventor: Kiyohito Kondo , Friedrich Bohner , Martin Pohl , Robert Stockter
- Applicant: Kiyohito Kondo , Friedrich Bohner , Martin Pohl , Robert Stockter
- Applicant Address: DE Paderborn
- Assignee: Benteler Automobiltechnik GmbH
- Current Assignee: Benteler Automobiltechnik GmbH
- Current Assignee Address: DE Paderborn
- Agency: Henry M Feiereisen LLC
- Priority: DE102008047971 20080918
- Main IPC: B21D22/00
- IPC: B21D22/00 ; B21D22/20 ; B21D22/22 ; B21D24/16 ; C21D8/02 ; C21D1/673 ; C21D1/18 ; B21D37/16

Abstract:
In a method for press-hardening a metallic formed structure made of a hardenable steel sheet, the steel sheet is heated above a transition temperature Ac3 and then placed in a cooled press having a forming tool with at least one uncooled contour section for forming a region of reduced hardness. Marginal regions of the steel sheet are clamped with a sheet holder arrangement which has an inner sheet holder and an outer sheet holder. The inner sheet holder is hereby located closer to the forming tool than the outer sheet holder. The sheet holder arrangement is configured to slow down flow of the marginal regions into the forming tool. After closing the press tool, the steel sheet is formed in a first forming phase by holding the marginal region with the outer sheet holder and in a subsequent forming phase by holding the marginal region with the inner sheet holder.
Public/Granted literature
- US20100064759A1 METHOD AND DEVICE FOR PRESS-HARDENING A METALLIC FORMED STRUCTURE Public/Granted day:2010-03-18
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