| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for cooling a high temperature steel plate, which method can be applied to a longitudinally profiled steel plate having various cross sections without changing the flow rate of water to be poured on the steel plate during the pass of the plate. SOLUTION: In the method for cooling the high temperature steel plate, dividing points for the steel plate in the longitudinal direction are preliminarily determined before cooling at the leading end, the trailing end, and the inflection point of the thickness gradient of the plate in the longitudinal direction. Reference positions are provided between the inlet side and the outlet side of a cooling apparatus, and the speed of the pass is changed at a constant accelerating rate or a constant decelerating rate within the period from the arrival of the dividing point at the reference point to the arrival of the next dividing point at the same reference point, and an initial speed of the pass, the accelerating rate, and the decelerating rate are determined such that the dividing point is cooled within the allowable cooling temperature range while passing the cooling apparatus. COPYRIGHT: (C)2005,JPO&NCIPI
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