我国特钢中小型轧机的技术改造,主要应满足于提高产品质量,特别是提高断面形状和尺寸精度,扩大产品品种,减少轧辊和电能消耗和增加生产厂以及使用单位的经济效益。而解决这些问题的有效措施是在现有轧机上增设多辊孔型机架,或在原有机架中增设立辊框架采用多辊孔型,或将拉模改为由多辊孔型组成的机头。 The technological transformation of China’s small and medium-sized special rolling mills should mainly be satisfied with the improvement of product quality, especially the improvement of cross-sectional shape and dimensional accuracy, expansion of product varieties, reduction of roll and power consumption, and increase of the economic benefits of production plants and units. The effective measures to solve these problems are to add multi-pass hole racks to the existing rolling mills or to add multi-roller hole mills to the original racks, or to change the drawing dies to multi-pass holes Head