Invention Grant
- Patent Title: Method for producing press-formed product
- Patent Title (中): 压制成型品的制造方法
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Application No.: US13877105Application Date: 2011-09-30
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Publication No.: US09358602B2Publication Date: 2016-06-07
- Inventor: Junya Naitou , Keisuke Okita , Shushi Ikeda
- Applicant: Junya Naitou , Keisuke Okita , Shushi Ikeda
- Applicant Address: JP Hyogo
- Assignee: Kobe Steel, Ltd.
- Current Assignee: Kobe Steel, Ltd.
- Current Assignee Address: JP Hyogo
- Agency: Studebaker & Brackett PC
- Priority: JP2010-222938 20100930
- International Application: PCT/JP2011/072666 WO 20110930
- International Announcement: WO2012/043832 WO 20120405
- Main IPC: B21D22/20
- IPC: B21D22/20 ; B21D37/16 ; B21D22/22 ; B21D24/04 ; B21D24/02

Abstract:
There is provided a useful method for producing a press-formed product without making the structure of a press tool complicated, which product has favorable formability in a level so as to be able to be produced by deep drawing, and which product is produced by press-forming a thin steel sheet with a punch and a die, in which the thin steel sheet is heated to a temperature not lower than an Ac3 transformation point thereof, and the press-forming is then started, wherein the forming is carried out so that a temperature difference in the thin steel sheet is adjusted to be not higher than 200° C. at a stage when the thin steel sheet has reached one third of a forming height.
Public/Granted literature
- US20130199258A1 METHOD FOR PRODUCING PRESS-FORMED PRODUCT Public/Granted day:2013-08-08
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