Invention Grant
- Patent Title: Zinc hot dip galvanized steel plate excellent in press formability and method for production thereof
- Patent Title (中): 锌成型性优异的锌热浸镀锌钢板及其制造方法
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Application No.: US10521474Application Date: 2003-10-17
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Publication No.: US07338718B2Publication Date: 2008-03-04
- Inventor: Shoichiro Taira , Masaki Tada , Yoshiharu Sugimoto , Masayasu Nagoshi , Takashi Kawano , Etsuo Hamada , Satoru Ando , Shinji Ootsuka , Masaaki Yamashita
- Applicant: Shoichiro Taira , Masaki Tada , Yoshiharu Sugimoto , Masayasu Nagoshi , Takashi Kawano , Etsuo Hamada , Satoru Ando , Shinji Ootsuka , Masaaki Yamashita
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: Frishauf, Holtz, Goodman & Chick, P.C.
- Priority: JP2003-113938 20030418
- International Application: PCT/JP03/13281 WO 20031017
- International Announcement: WO2004/094683 WO 20041104
- Main IPC: B32B15/04
- IPC: B32B15/04 ; C23C2/06 ; C23C2/26
Abstract:
A hot-dip galvanized steel sheet includes a plating layer substantially composed of the η phase and an oxide layer disposed on a surface of the plating layer. The oxide layer has an average thickness of 10 nm or more and includes a Zn-based oxide layer and an Al-based oxide layer. A method for producing the hot-dip galvanized steel sheet includes a hot-dip galvanization step, a temper rolling step, and an oxidation step.
Public/Granted literature
- US20050139291A1 Zinc hot dip galvanized steel plate excellent in press formability and method for production thereof Public/Granted day:2005-06-30
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