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过去一般认为,白口铸铁在常规条件下是不能焊补的。特别对受力极其复杂的白口铸铁轧辊,焊补更为困难。白口铸铁轧辊脆性大,抗疲劳性能差,因而在使用过程中极易产生掉皮、剥落或局部龟裂等缺陷,在不能焊补的情况下,只能整体报废,造成很大的经济损失。 山东工业大学从1982年起开展了白口铸铁轧辊焊补的研究,经过五年的努力,终于获得了成功。1987年11月,山东省教育厅组织有关专家在济南召开了鉴定会。专家们一致认为,该项技术具有明显
In the past generally believed that white cast iron under normal conditions can not be welding repair. In particular, extremely stressed white cast iron roll, welding more difficult. White cast iron roll brittle brittle, poor fatigue resistance, and thus in the course of the very easy to produce peel, flaking or local cracking and other defects, can not be welded in the case, can only be scrapped, resulting in great economic losses . Shandong University of Technology launched from 1982 on the white cast iron roll welding repair research, after five years of hard work and finally achieved success. November 1987, Shandong Provincial Department of Education organized experts in Jinan appraisal will be held. Experts agree that the technology is obvious