- 专利标题: Titanium cast product for hot rolling unlikely to exhibit surface defects and method of manufacturing the same
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申请号: US15513355申请日: 2014-09-30
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公开(公告)号: US11504765B2公开(公告)日: 2022-11-22
- 发明人: Tomonori Kunieda , Yoshitsugu Tatsuzawa , Hideki Fujii
- 申请人: NIPPON STEEL & SUMITOMO METAL CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人: NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 国际申请: PCT/JP2014/076084 WO 20140930
- 国际公布: WO2016/051503 WO 20160407
- 主分类号: B22D21/00
- IPC分类号: B22D21/00 ; B21B1/02 ; B21B3/00 ; C22C14/00 ; C22F1/18
摘要:
Provided is a titanium cast product for hot rolling made of commercially pure titanium, the titanium cast product including a melted and resolidified layer in a range of more than or equal to 1 mm in depth on a surface serving as a rolling surface, the melted and resolidified layer being obtained by adding one or more elements out of any one of or both of at least one α stabilizer element and at least one neutral element to the surface, and melting and resolidifying the surface. An average value of a total concentration of the at least one α stabilizer element and the at least one neutral element in the range of more than or equal to 1 mm in depth is higher than a total concentration of the at least one α stabilizer element and the at least one neutral element in a base metal by, in mass %, more than or equal to 0.1% and less than 2.0%.
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