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针对球墨铸铁中石墨球粗大问题,本文提出用堆焊法来细化球墨铸铁表层石墨球。结果表明:用该方法可在球墨铸铁表层获得具有尺寸细小、圆整度好且分布均匀的石墨球。
In view of the coarse graphite ball in ductile iron, this paper proposes to refine the surface graphite ball of ductile iron by surfacing method. The results show that graphite balls with small size, good roundness and uniform distribution can be obtained on the surface of ductile iron by this method.