This paper introduces the development process of cast QT700-2 eccentric castings.In the casting process plan,layered casting is adopted,cold iron is used in the hot section of casting,and combined with heat preservation riser process,so that the casting achieves balanced solidification and e-liminates the shrinkage and shrinkage defects of the casting;in the melting process,through alloying,the use of low-rare-earth spheroidal catalyst,and the use of multiple gestation treatment,the elimination of fragmented graphite,graphite grain refining,and stabilization of the pearl content,and the performance of the produced cast eccentric meets the customer's Requirements.
维普
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