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Secondary cooling method of continuous casting slab
Secondary cooling method of continuous casting slab
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机译:连铸板坯的二次冷却方法
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摘要
PROBLEM TO BE SOLVED: To provide a secondary cooling method of a continuous casting slab, in which occurrence of a surface crack (a corner crack) and an inner crack (a horizontal crack) is prevented by the cooling method of the slab only, without sacrificing productivity of a continuous casting apparatus and without modifying a component system of the slab.;SOLUTION: In a secondary cooling method of a continuous casting slab, width cutting not spraying secondary cooling water 25 is performed at both end parts of a long side 21a of an upper surface side of a cast slab 5 in at least a part of a casting segment from immediately after a bent part 13 to a solidification completion position in a continuous casting apparatus, whereas a total width including both end parts of the long side 21a of a lower surface side of the cast slab 5 is sprayed with the secondary cooling water 25 in the casting segment from immediately after the bent part 13 to the solidification completion position.;COPYRIGHT: (C)2014,JPO&INPIT
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