On the basis of the basic theory of metal distortion , using round steel alit rolling as entity model and combining with production practice , the selection of slit location , slit mode and the design parameter of slit pass system were analyzed , and the area calculation model of pre - slit rolled piece and slit rolled piece was built 摘要基于金属塑性变形基本理论，以圆钢双线切分为基本实体模型，结合生产实践，对切分位置、切分方式的选择和切分孔型系统的设计参数进行了分析，并建立了预切分轧件和切分轧件的面积计算模型。
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