In regard to non wear resistance of the white iron shot in the practical application process,alloy iron shot have been produced by means of adding alloying element and proper heat treatment.

In regard to the low wear resistance of the white iron shot in the practical application,based on experimental research and trial production,by alloying and proper heat treatment, the shot can be made with higher hardness,better toughness and increased service life.

The effects of rare earth on the structure and properties of low CuCrMoNi-alloyed cast iron used for camshafts cast in shell mould with iron shot backing and in green sand mould was compared and investigated.