The present work shows that the nonuniformthickness of solidified skin of slab created by the nonuniform cooling rate of the skin in the crystallizer is main cause for slab surface cracking.
试验结果得知，坯壳在结晶器内冷却不均，使坯壳凝固层厚薄不同，是铸坯产生表面裂纹的主要原因。
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The paper in another respect gives, from equations (13) and (15), a method of calculation of the upper and lower limit lengths of the blanket for both of the cases of uniform and nonuniformthickness.