Invention Grant
- Patent Title: Manufacturing method and manufacturing apparatus of hot-rolled steel sheet
- Patent Title (中): 热轧钢板的制造方法和制造装置
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Application No.: US13598162Application Date: 2012-08-29
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Publication No.: US08945319B2Publication Date: 2015-02-03
- Inventor: Hisayoshi Tachibana , Shigemasa Nakagawa
- Applicant: Hisayoshi Tachibana , Shigemasa Nakagawa
- Applicant Address: JP Tokyo
- Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee Address: JP Tokyo
- Agency: Clark & Brody
- Priority: JP2010-054650 20100311
- Main IPC: C21D8/02
- IPC: C21D8/02 ; C21D11/00 ; B21C51/00 ; B21B37/74 ; B21B45/00 ; B21B45/02 ; B21B1/26 ; B21B38/00 ; B21B45/06

Abstract:
Provided is a manufacturing method of a hot-rolled steel sheet which enables manufacturing of a hot-rolled steel sheet having excellent surface properties and a fine structure. The manufacturing method of a hot-rolled steel sheet uses a heating device, descaling device, row of finishing mills, cooling device disposed in the row of finishing mills, and rapid cooling device disposed immediately after the row of finishing mills, and the operations of the heating device, cooling device and rapid cooling device are controlled, thereby controlling a temperature T1 of the material to be rolled on an entry side of the row of finishing mills, a temperature T2 of the material to be rolled on an entry side of a final stand in the row of finishing mills, and a temperature T3 of the material to be rolled on an exit side of the rapid cooling device.
Public/Granted literature
- US20120318414A1 MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF HOT-ROLLED STEEL SHEET Public/Granted day:2012-12-20
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