| 摘要 |
PROBLEM TO BE SOLVED: To minimize the development of hot band and to produce a sound thin cast slab by optimizing the temp. of a side weir in a twin roll type continuous casting. SOLUTION: In the twin roll type continuous casting for producing the thin cast slab, a side weir temp. control method in which the side weir is divided into vertically two pieces and heated while making the temp. difference between the upper part 2 of the side weir 1 and the lower part 3 of the side weir 1 at the initial stage of the casting, is adopted. Further, the temp. at the lower part 3 of the side weir is higher than the temp. at the upper part 2 of the side weir, and desirably, by heating it at the temp. higher by 100-300 deg.C the solidified shell thickness at the lower part 3 of the side weir is made thin and the heat band caused by penetration of molten metal is restrained.
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