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Title:
HIGH CARBON STEEL HOT ROLLING METHOD
Document Type and Number:
WIPO Patent Application WO/2015/141154
Kind Code:
A1
Abstract:
Provided is a hot rolling method capable of preventing the occurrence of cracking of a steel sheet in a cooling process after finish rolling in hot rolling of high carbon steel. A high carbon steel hot rolling method for heating a sheet bar of high carbon steel by a sheet bar heater installed on the inlet side of a finish rolling mill and thereafter finish-rolling the sheet bar by the finish rolling mill, wherein the heating by the sheet bar heater is performed such that the temperature rise amount at the tail end of the sheet bar becomes a predetermined upper limit or less, the temperature rise amount at the tail end of the sheet bar being a difference between a temperature when the sheet bar is heated by the sheet bar heater and a temperature when the sheet bar is not heated by the sheet bar heater at the tail end of the sheet bar immediately in front of the inlet side of the finish rolling mill.

Inventors:
SAKURAI YASUHIRO (JP)
MORI KAZUYA (JP)
MATSUMOTO YUKI (JP)
Application Number:
PCT/JP2015/001069
Publication Date:
September 24, 2015
Filing Date:
February 27, 2015
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
B21B1/26; B21B3/02; B21B37/74; B21B45/00
Foreign References:
JP2007291495A2007-11-08
JP2003275805A2003-09-30
JP2013540896A2013-11-07
JPS5530338A1980-03-04
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)
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