Title:
SECONDARY COOLING METHOD AND SECONDARY COOLING DEVICE FOR CONTINUOUSLY CAST SLAB
Document Type and Number:
WIPO Patent Application WO/2017/131204
Kind Code:
A1
Abstract:
The present invention is a secondary cooling method and secondary cooling device for a cast slab cast by a continuous casting machine, and is characterized in that the continuous casting machine has, in a secondary cooling zone below a mold, a plurality of pairs of support rolls for supporting the cast slab from both sides in the thickness direction of the cast slab, a cooling device is disposed between adjacent support rolls along the casting direction of the continuous casting machine, the cooling device is provided with a refrigerant pipe for supplying a refrigerant and a flat plate-shaped refrigerant guide plate for spreading the refrigerant on the cast slab, the refrigerant is supplied to a gap between the surface of the cast slab and the refrigerant guide plate from a refrigerant supply port provided in the refrigerant guide plate in a state in which the refrigerant guide plate is disposed parallel to the surface of the cast slab at an interval therefrom in the direction perpendicular to the surface of the cast slab, and the cast slab is cooled primarily by the refrigerant in a transition boiling region.
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Inventors:
KUWAUCHI YUKI (JP)
FUNAGANE HITOSHI (JP)
HAYASHI SATORU (JP)
FUNAGANE HITOSHI (JP)
HAYASHI SATORU (JP)
Application Number:
PCT/JP2017/003053
Publication Date:
August 03, 2017
Filing Date:
January 27, 2017
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B22D11/22; B22D11/124
Foreign References:
| JPH10137833A | 1998-05-26 | |||
| JP2009202166A | 2009-09-10 | |||
| JPH0584455U | 1993-11-16 | |||
| JP2011183435A | 2011-09-22 | |||
| JPS535505U | 1978-01-18 | |||
| JP5598614B2 | 2014-10-01 | |||
| JPS5146006B2 | 1976-12-07 | |||
| JP4453562B2 | 2010-04-21 | |||
| JP2002086253A | 2002-03-26 | |||
| JPH09201661A | 1997-08-05 |
Other References:
SHIGEMASA NAKAGAWA ET AL.: "Modeling and Stability Analysis of Cooling Control in the Transition Boiling Region", TRANSACTIONS OF THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS, vol. 48, no. 4, 2012, pages 207 - 213, XP055553601
"Maximum heat flux propagation velocity during quenching by water jet impingement", INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, vol. 50, 2007, pages 1559 - 1568
See also references of EP 3375546A4
"Maximum heat flux propagation velocity during quenching by water jet impingement", INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, vol. 50, 2007, pages 1559 - 1568
See also references of EP 3375546A4
Attorney, Agent or Firm:
KANEMOTO, Tetsuo et al. (JP)
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