问答题

简答题 计算题:150×150mm2方坯结晶器铜管上口尺寸153.6×153.6mm2,下口尺寸152.3×152.3mm2,长度为800mm,求结晶器倒锥度。

【参考答案】

ε=[(152.3×152.3-153.6×153.6)/(152.3×152.3×0.8)]×100%......

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