Title:
COLD ROLLING MILL, TANDEM ROLLING FACILITY, REVERSING ROLLING FACILITY, METHOD FOR MODIFYING ROLLING FACILITY, AND METHOD FOR OPERATING COLD ROLLING MILL
Document Type and Number:
WIPO Patent Application WO/2013/042204
Kind Code:
A1
Abstract:
In order to reduce the diameter of the work rolls of a six-stage rolling mill and thus to enable rolling of a steel plate having unprecedented hardness and to enable rolling of a steel plate having conventional hardness but with a higher rolling reduction, and to prevent a decrease in production due to the use of a mill with a small work roll, such as a cluster-type multi-stage rolling mill, a cold rolling mill (51), which rolls a metal plate (1) having a minimum plate width of 600 mm or greater and a maximum plate width of 1,500-1,900 mm, is equipped with: a pair of work rolls (2), upper and lower, which roll the rolled material (1); a pair of intermediate rolls (3), upper and lower, which respectively support the work rolls (2); a pair of reinforcing rolls (4), upper and lower, which respectively support the intermediate rolls (3); axial direction shift devices (23) for the intermediate rolls (3); and bending devices (10, 11) for the work rolls (2) and the intermediate rolls (3). The diameter of the work rolls (2) is set between 300-400 mm, and the diameter of the intermediate rolls (3) is set between 560-690 mm.
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Inventors:
YASUNARI SHINICHI (JP)
SHIMAYA FUMIHISA (JP)
SHIMAYA FUMIHISA (JP)
Application Number:
PCT/JP2011/071391
Publication Date:
March 28, 2013
Filing Date:
September 20, 2011
Export Citation:
Assignee:
MITSUBISHI HITACHI METALS (JP)
YASUNARI SHINICHI (JP)
SHIMAYA FUMIHISA (JP)
YASUNARI SHINICHI (JP)
SHIMAYA FUMIHISA (JP)
International Classes:
B21B27/02; B21B1/22; B21B13/14; B21B29/00
Foreign References:
| JP2003088907A | 2003-03-25 | |||
| JP2011025254A | 2011-02-10 | |||
| JPH1071409A | 1998-03-17 | |||
| JPH1133608A | 1999-02-09 |
Attorney, Agent or Firm:
KASUGA Yuzuru (JP)
Kasuga 讓 (JP)
Kasuga 讓 (JP)
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Claims: