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M1080、M1083无心磨床是我厂的主导产品之一,磨削轮架中砂轮主轴前后支承均采用五片式楔形油膜轴承,轴瓦为双金属,铜层的材料是 ZQP_b12-8。在离心浇铸中.由于铅的比重(11.34)比铜(8.9)和锡(7.3)的比重大,易造成铅的比重偏析和组织偏析,增加了铸造的困难,再加上其它原因,使双金属轴瓦一次浇铸合格率降低到40%左右。
M1080, M1083 centerless grinding machine is one of the leading products of our factory. The front and back support of the grinding wheel spindle in the grinding wheel frame adopts five types of wedge oil film bearings. The bearing bush is made of bimetal and the material of the copper layer is ZQP_b12-8. In centrifugal casting, the specific gravity of lead (11.34) is larger than the proportion of copper (8.9) and tin (7.3), which easily leads to the specific gravity segregation of lead and the segregation of the microstructure, increasing the difficulty of casting. Coupled with other reasons, Metal bearing a casting pass rate reduced to about 40%.