- 专利标题： HOT DIP GALVANNEALED STEEL SHEET
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申请号： US18562665申请日： 2022-04-21
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公开(公告)号： US20240229212A1公开(公告)日： 2024-07-11
- 发明人: Taihei KANETO , Takashi OKE , Nayuta KAWAZU , Atsushi KOMURO , Tomohiro MIYASHITA
- 申请人： NIPPON STEEL CORPORATION
- 申请人地址： JP Tokyo
- 专利权人： NIPPON STEEL CORPORATION
- 当前专利权人： NIPPON STEEL CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP 21086304 2021.05.21
- 国际申请： PCT/JP2022/018474 2022.04.21
- 进入国家日期： 2023-11-20
- 主分类号： C23C2/06
- IPC分类号： C23C2/06 ; C21D1/74 ; C21D6/00 ; C21D8/02 ; C21D9/46 ; C22C18/00 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/08 ; C22C38/10 ; C22C38/12 ; C22C38/14 ; C22C38/16 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50 ; C22C38/52 ; C22C38/54 ; C22C38/56 ; C22C38/60 ; C23C2/28 ; C23C2/40
摘要：
The hot dip galvannealed steel sheet of the present disclosure has a base steel sheet and a plating layer. The base steel sheet has a predetermined chemical composition by mass %. An existence ratio ER of internal oxides identified under predetermined conditions by observation of the cross-section of the base steel sheet is 40% or less and an interval I of internal oxides is 300 μm or more. The hot dip galvannealed steel sheet of the present disclosure is excellent in appearance etc.
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