| 摘要 |
PROBLEM TO BE SOLVED: To improve production efficiency by arranging a holding furnace, a direction changing device for changing the direction of a slab by 90 deg. and a rolling mill in order on the downstream side of a continuous casting machine for forming slabs having a prescribed length, width and thickness. SOLUTION: Based on the size of final product such as a thick plate and a metal sheet, the size of the slab 15 formed with the continuous casting machine 1 is decided by a prescribed means. The slab 15 having the prescribed with, thickness and length is formed with the continuous casting machine 1 by operating a controller so as to have the decided size. It is preferable that the thickness of the slab 15 is 50-120 mm. Next the slab 15 is immediately charged into the holding furnace 2, extracted according to a schedule and transferred to the direction changing device 4 through a 1st descaling device 3 and then the direction of the slab 15 is changed by 90 deg. from the longitudinal direction to the width direction. By rolling the slab plural times with the rolling mill 7 while passing through edger mills 5, 9 and descaling devices 6, 8, the rolled stock of the thick plate having the prescribed size is formed.
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