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介绍了首钢初轧厂在６５０ｍｍ三辊不可逆式轧机上进行大辊径差轧制的实践，取得了可改善咬入条件、增大压下量及提高开坯能力的良好效果。
This paper introduces the practice of Shougang initial rolling mill in large 650mm three-roll irreversible rolling mill, and obtains the good effect of improving the bite-in conditions, increasing the reduction and improving the billet capacity.