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Title:
COLD ROLLING EQUIPMENT, COLD ROLLING METHOD, AND MANUFACTURING METHOD FOR METAL SHEET
Document Type and Number:
WIPO Patent Application WO/2022/091484
Kind Code:
A1
Abstract:
The cold rolling equipment according to the present invention is provided with a tandem cold mill provided with a plurality of rolling stands and a rolling-process supply system for supplying a rolling oil to the tandem cold mill, wherein the rolling-process supply system has a first rolling oil supply system for supplying a first emulsion rolling oil and a second rolling oil supply system for supplying a second emulsion rolling oil having a higher concentration than the first emulsion rolling oil, and at least a specified rolling stand among the plurality of rolling stands is supplied with a mixed rolling oil, in which the first emulsion rolling oil and the second emulsion rolling oil are mixed, so as to satisfy the expression (1) below. Expression (1): 0.6 ≤ F2/F1 ≤ 1.4, where F1 is a first horizontal force acting in a rolling direction on the rolls of the specified rolling stand, and F2 is a second horizontal force acting in a rolling direction on the rolls of an upstream rolling stand, which is positioned adjacently upstream of the specified rolling stand.

Inventors:
FUJITA NORIKI (JP)
OHASHI MIWA (JP)
ARAKAWA TETSUYA (JP)
MATSUBARA YUKIHIRO (JP)
Application Number:
PCT/JP2021/024962
Publication Date:
May 05, 2022
Filing Date:
July 01, 2021
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
B21B27/10; B21B1/22; B21B45/02
Foreign References:
JP2020138218A2020-09-03
JP2005297025A2005-10-27
JP2008212974A2008-09-18
US6276183B12001-08-21
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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