提高大型支承辊的质量,缩小与国外支承辊质量的差距,一直是从事轧辊生产技术人员为之奋斗的目标。一九七八年秋,冶金、机械两部轧辊质量攻关会上,确定了《提高大型支承辊质量研究》的课题,主攻对象是武钢一米七轧机支承辊。几年来,我所与有关单位一起试验研究出新的钢号 DZ801,利用电炉、酸性平炉冶炼,真空浇注,采用新的 Improve the quality of large-scale support roller, reducing the quality of the gap with the foreign support roller has been engaged in roll production technical staff to fight for the goal. In the autumn of 1978, at the research conference on the quality control of two rolls of metallurgy and machinery, the subject of “Research on Improving the Quality of Large-scale Backing Rollers” was identified. The main target of the project was the support roller of Wuhan No.17 Mill. Over the past few years, I have experimented with the relevant units to develop a new steel DZ801, the use of electric furnace, smelting furnace, vacuum pouring, the use of new