Invention Application
- Patent Title: PRESS FORMING METHOD AND SHAPE EVALUATION METHOD FOR PRESS FORMED PART
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Application No.: US17799782Application Date: 2020-10-02
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Publication No.: US20230100401A1Publication Date: 2023-03-30
- Inventor: Yusuke FUJII , Masaki URABE , Shunsuke TOBITA
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP2020-029205 20200225
- International Application: PCT/JP2020/037619 WO 20201002
- Main IPC: B21D22/26
- IPC: B21D22/26

Abstract:
A press forming method for controlling a shape change of a press formed part over time after the press formed part springs back at a moment of a release from a press-forming die includes: a press forming step of press forming a metal sheet into the press formed part by using the press-forming die; a die releasing step of releasing the press formed part, which is press-formed, from the press-forming die; and a post-release die holding step of holding the released press formed part in a forming bottom dead center shape for 30 minutes or more by using the press-forming die.
Public/Granted literature
- US12090541B2 Press forming method and shape evaluation method for press formed part Public/Granted day:2024-09-17
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