Invention Grant
- Patent Title: Method of producing a hot rolled steel sheet
- Patent Title (中): 热轧钢板的制造方法
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Application No.: US14000143Application Date: 2012-03-05
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Publication No.: US09267196B2Publication Date: 2016-02-23
- Inventor: Riki Okamoto , Nobuhiro Fujita , Manabu Takahashi , Kunio Hayashi , Tetsuo Kishimoto , Kazuaki Nakano , Takeshi Yamamoto
- Applicant: Riki Okamoto , Nobuhiro Fujita , Manabu Takahashi , Kunio Hayashi , Tetsuo Kishimoto , Kazuaki Nakano , Takeshi Yamamoto
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2011-047720 20110304; JP2011-048231 20110304
- International Application: PCT/JP2012/055586 WO 20120305
- International Announcement: WO2012/121219 WO 20120913
- Main IPC: C21D8/04
- IPC: C21D8/04 ; C22C38/04 ; C22C38/02 ; C22C38/38 ; C22C38/00 ; C22C38/06 ; B21B1/26 ; C22C38/08 ; C22C38/10 ; C22C38/12 ; C22C38/14 ; C22C38/16 ; C22C38/34 ; C21D9/46 ; C21D8/02 ; C22C38/18 ; C21D6/00

Abstract:
In a hot-rolled sheet, an average value of pole densities of an orientation group {100} to {223} , which is represented by an arithmetic mean of pole densities of orientations {100} , {116} , {114} , {112} , and {223} in a thickness center portion of a thickness range of ⅝ to ⅜ from a surface of the steel sheet, is 1.0 to 6.5 and a pole density of a crystal orientation {332} is 1.0 to 5.0; and a Lankford value rC in a direction perpendicular to a rolling direction is 0.70 to 1.10 and a Lankford value r30 in a direction that forms 30° with respect to the rolling direction is 0.70 to 1.10.
Public/Granted literature
- US20130323112A1 HOT-ROLLED STEEL SHEET AND METHOD OF PRODUCING THE SAME Public/Granted day:2013-12-05
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