前言：板坯调宽侧压过程中常出现失稳弯曲及头尾部鱼尾过长现象，降低了产品的成材率。
The buckling and "fish tail" are often occurred in sizing press, which can reduce the metal yield.
同时研究了板坯SP侧压后尾部翘曲的形成原因及影响因素。研究结果表明，板坯侧压调宽后，头部和尾部在长度方向上形成鱼尾，厚度方向上形成狗骨；
The results show that the head and end of the slab formed fish tail along length direction and dog bone along width direction after SP.
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