Effects of heat treatment on properties of low carbon-high chromium cast iron

Different heat treatments have been carried out for low carbon-high chromium cast iron(HCCI),and the effects of austenizing temperature,secondary holding time and chilling mode on its properties were studied.The results show that the HCCI achieve the highest hardness and the best wear resistance after being quenched at 1050 ℃.High hardness and better wear resistance can be obtained by prolonging the high temperature holding and the secondary holding time.However,too long a holding time will result in degrading of the properties.The chilled cast iron obtains higher hardness but worse wear resistance.