COOLING APPARATUS AND COOLING METHOD FOR STEEL MATERIAL

WIPO Patent Application WO/2016/056517

A1

　This cooling apparatus for a steel material is a cooling apparatus for forming a long steel material (10) into a predetermined shape including a bend by causing one end in a longitudinal direction of the steel material to move in two dimensions or three dimensions, while heating a portion in the longitudinal direction of the steel material while feeding the steel material in the longitudinal direction in a state in which the one end of the steel material is gripped, and then cooling the heated section including the bend, wherein the cooling apparatus is provided with a first cooling device (22) for spraying a first cooling medium on the heated section, and a second cooling device (23) for spraying a second cooling medium on the heated section, the second cooling device (23) being provided downstream relative to the first cooling device as viewed along the feed direction of the steel material. A plurality of second cooling devices are arranged along the feed direction, and the flow rate of the second cooling medium can be controlled independently for each of the second cooling devices. Uneven tempering in bending of the steel material can thereby be reduced.

SERIZAWA YOSHIHIRO (JP)
SAKAMOTO AKIHIRO (JP)
TASAKA MASAHITO (JP)
SHIMADA NAOAKI (JP)
HAMADA RYUJI (JP)
MATSUDA HIDEKI (JP)
YAMASAKI NORIMASA (JP)

PCT/JP2015/078240

April 14, 2016

October 05, 2015

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NIPPON STEEL & SUMITOMO METAL CORP (JP)

B21D7/16

WO2013132912A1

2013-09-12

JP2009526135A	2009-07-16
JPS63126621A	1988-05-30
JP2007083304A	2007-04-05
JP2011089151A	2011-05-06
JPH0810856A	1996-01-16
JP2006283179A	2006-10-19

See also references of EP 3205419A4

SHIGA Masatake et al. (JP)
Masatake Shiga (JP)

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