C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
341/15.1
C21D 1/667 (2006.01) B21B 37/44 (2006.01) B21B 1/26 (2006.01) B21B 1/38 (2006.01) B21B 15/00 (2006.01) B21B 37/76 (2006.01) B21B 45/02 (2006.01)
Patent
CA 1281794
ABSTRACT OF THE DISCLOSURE A method of water cooling a hot-rolled steel plate is disclosed. In this method, while a hot-rolled steel plate is being advanced lengthwise, a plurality of nozzles spray cooling water to the steel plate, and thus the plate is cooled to a predetermined temperature at a predetermined cooling rate. Before, while and after the plurality of nozzles carry out water-cooling, temperatures are consistently measured at predetermined temperature measurement points in cross-sectional areas of temperature measurement positions which are arranged lengthwise at predetermined locations of the steel plate. Each time such measure- ment is performed, degree of deformation of the plate is calculated on the basis of temperature differences between the temperature measurement points. When the calculated degree of deformation is not within an allowable range, corrections are made on the distri- bution of the water supplied by the plurality of nozzles.
525549
Kakimoto Sumitada
Miyawaki Hiroki
Ogai Harutoshi
Tanehashi Kiyoshi
Uekaji Hiroshi
Gowling Lafleur Henderson Llp
Nippon Steel Corporation
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