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对 Ｍ Ｋ１５０／２５０ 冷轧机的四辊组合孔型轧制法进行了分析和实验研究， 设计了用该轧机轧制钛棒的孔型及辅助导板， 通过试验得到理想的钛方、矩形棒和圆棒， 并对该轧机与普通二辊轧机两种轧制方法的轧件力学性能做了比较和理论分析， 说明四辊轧制受力状态对轧件的抗拉强度和延伸率的影响。
The rolling method of 4-roll combined hole rolling of M K150 / 250 cold rolling mill was analyzed and experimentally researched. The hole shape and auxiliary guide plate of the rolling titanium rod were designed, and the ideal titanium square, Rectangular bar and round bar, and compared the mechanical properties of the two rolling methods of the rolling mill with the ordinary two-rolling mill. The results show that the tensile strength and elongation Impact.