球铁曲轴铸件的健全性主要是指石墨球化的品质和获得较理想的基体组织,以及无夹渣、无缩松等缺陷。作为大截面铸件的机车柴油机球铁曲轴,在国内外,其夹渣与缩松问题常常成为生产中的关键。长期来,人们对此作了很多探讨。我厂从1975年开始生产东风5型内燃机车8240Z柴油机球铁曲轴。所有已装机的曲轴至今都在完好地运转。但是,生产中的 The ductility of ductile iron crankshaft castings mainly refers to the quality of graphite nodularity and the ideal matrix structure as well as the defects of no slag inclusion and no shrinkage. Locomotive Diesel Ductile Iron Crankshaft, which is a large section castings, has the problem of slag inclusion and shrinkage at home and abroad. For a long time, people made a lot of discussions. I plant from 1975 to produce Dongfeng 5 diesel locomotive 8240Z diesel ductile iron crankshaft. All installed crankshafts are functioning well until now. However, in production