Invention Grant
- Patent Title: Hot pressed part and method of manufacturing same
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Application No.: US16482154Application Date: 2018-02-05
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Publication No.: US10995385B2Publication Date: 2021-05-04
- Inventor: Koichi Nakagawa , Yoshikiyo Tamai
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Kenja IP Law PC
- Priority: JPJP2017-068103 20170330
- International Application: PCT/JP2018/003811 WO 20180205
- International Announcement: WO2018/179839 WO 20181004
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C22C18/00 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; B21D22/02 ; C21D6/00 ; C21D8/02 ; C21D9/46 ; C21D1/18 ; C23C2/02 ; C21D3/04 ; C21D8/04 ; C22C38/08 ; C22C38/18 ; C22C38/28 ; C22C38/16 ; C22C38/32 ; C21D9/48 ; C22C38/12 ; C22C38/14 ; C23C2/06 ; C21D9/00 ; C21D1/673 ; C21D1/74 ; B32B15/04 ; C23C2/26 ; C23C28/02 ; C23C30/00 ; B32B15/18 ; C23C2/12 ; C23C2/40 ; C22C38/50 ; C22C38/40 ; C22C38/38 ; C22C38/44 ; C22C38/42 ; C22C38/54 ; C22C38/22 ; C22C38/46 ; C22C38/24 ; C22C38/26 ; C22C38/20 ; C22C38/48 ; C22C38/34
Abstract:
A hot pressed part comprises: a predetermined chemical composition; and a steel microstructure that is a gradient microstructure in which, in a thickness direction, a surface layer is a soft layer, an inside is a hard layer, and a layer between the soft layer and the hard layer is a transition layer.
Public/Granted literature
- US20190390295A1 HOT PRESSED PART AND METHOD OF MANUFACTURING SAME Public/Granted day:2019-12-26
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