- 专利标题: Hot-dip galvanized steel sheet and manufacturing method of the same
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申请号: US14418852申请日: 2013-08-02
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公开(公告)号: US10131981B2公开(公告)日: 2018-11-20
- 发明人: Soshi Fujita , Shintaro Yamanaka
- 申请人: NIPPON STEEL & SUMITOMO METAL CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: NIPPON STEEL AND SUMITOMO METAL CORPORATION
- 当前专利权人: NIPPON STEEL AND SUMITOMO METAL CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2012-172739 20120803
- 国际申请: PCT/JP2013/071004 WO 20130802
- 国际公布: WO2014/021452 WO 20140206
- 主分类号: B32B15/01
- IPC分类号: B32B15/01 ; C23C2/02 ; C23C2/06 ; C23C2/28 ; C21D9/46 ; C21D8/02 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/12 ; C22C38/14 ; C23C2/40 ; C21D6/00 ; C22C38/00 ; C22C38/08 ; C22C38/16 ; C22C38/22 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C22C38/38
摘要:
The present invention provides a hot-dip galvanized steel sheet that is excellent in plating wettability and plating adhesiveness even when a base steel sheet contains Si and Mn, and a manufacturing method of the same. The hot-dip galvanized steel sheet according to the present invention includes a base steel sheet containing Si, Mn, and other predetermined components, and a hot-dip galvanizing layer formed on at least one surface of the base steel sheet. In the base steel sheet, a value of HA representing average hardness in a surface layer ranging from an interface between the base steel sheet and the hot-dip galvanizing layer to 50 μm in depth and a value of HB representing average hardness in a deep portion ranging from the interface to greater than 50 μm in depth satisfy all the following three relational expressions. 50≤HA≤500 (1) 50≤HB≤500 (2) 0.5≤HA/HB≤0.9 (3)
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