本文根据我厂对四辊精轧机用的国产大型整锻支承辊的修复实例,介绍一种局部不接触法。该法是我们与二重厂大锻件研究所杨正汉总工程师等工程技术人员在五厂共同探讨制定,并经支承辊和中心距A=900毫米的压下平面二次包络蜗杆修复使用得到证实。这种方法操作简单,不消耗金属材料,可在生产现场进行,使用效果良好,取得了较大的经济效益。 This article according to my factory on the four-roll finishing machine with a large forging backup roll repair cases, introduce a local non-contact method. The law is that we and the double plant large forging Institute Yang Zhenghan, chief engineer and other engineers and technicians in the fifth workshop to discuss and develop, and by the support roller and the center distance A = 900 mm, . This method is simple, does not consume metal materials, can be carried out at the production site, the use of good results, and achieved greater economic benefits.