一、前言 20多年来,我公司650轧机一直沿用原来的ZU70Mn铸钢轧辊。这种轧辊的缺点是材质晶粒粗大、硬度低且落差大、不耐磨、易断辊、寿命低。随着我公司轧钢生产的不断发展,这种轧辊早已不适应需要,严重地制约着生产的进一步发展。经过几年的试验研究,研制成功了一种比较理想的ZU70MnCrMo铸 First, the foreword For more than 20 years, our company 650 rolling mill has been using the original ZU70Mn cast steel roll. The disadvantage of this roll is the material coarse grain, low hardness and drop large, non-wear-resistant, easy to break roller, low life expectancy. With the continuous development of our company’s rolling production, this kind of roll has long been out of need and seriously restricts the further development of production. After several years of experimental research, the successful development of a more ideal ZU70MnCrMo cast