首钢850初轧机过去一直使用60CrMnMo 或60SiMnMo 锻钢轧辊,其生产工艺复杂、价格昂贵,易产生环裂报废,耐磨性不高。因此,采用球墨铸铁轧辊代替锻钢轧辊是初轧生产的一项重大技术革新,是实现“以铁代钢,以铸代锻”,降低轧辊成本,提高轧钢产量和生产效率的一项重大技术措施。具有重大的政治经济意义。早在1957年,鞍钢轧辊厂就试制了球墨铸铁初轧辊,经过多年的试验,轧辊的生产 In the past, Shougang 850 initial rolling mill used 60CrMnMo or 60SiMnMo forged steel rolls in the past. The production process is complicated and expensive, which is easy to generate annulus cracking and low wear resistance. Therefore, the use of ductile iron instead of forged steel roll is a major technological innovation in the production of initial rolling, which is a major technology to realize “substituting steel with iron for casting forging”, reducing the cost of rolling steel and increasing the output and production efficiency of steel rolling Measures. It has great political and economic significance. As early as 1957, Anshan Iron and Steel Rolling Mill trial production of ductile iron early roll, after years of testing, roll production