900t 钢坯剪断机曲轴,是鞍钢第一初轧厂方坯剪断机的关键部件.在该厂改造大修工程中发现,与曲轴配合的人字齿轮孔径过盈超差0.43mm.用电刷镀方法对曲轴进行了加径修复试验.由于刷镀具有镀层组织致密、结合强度高、工件不变形,不影响母材性能和施工方便等优点,对大型曲轴的大面积刷镀获得了成功,并取得了显著的经济效益。 900t billet shearing machine crankshaft is the first part of Anshan Iron and Steel Company’s first rolling mill billet cutting machine parts found in the renovation and renovation project found in the plant, and the crankshaft with the helical gear bore diameter tolerance surplus 0.43mm brushing method The crankshaft has been subjected to additional diameter repair test.Because the brush plating has the advantages of dense coating structure, high bonding strength, no deformation of the workpiece, no influence on the properties and construction convenience of the base metal, large-area brush plating of a large crankshaft has been succeeded and obtained Significant economic benefits.