Microstructure, Impact Fatigue Resistance and Impact Wear Resistance of Wear Resistant Low Cr-Si Cast Iron

摘要

A great amount of iron and steel has been consumed in impact wear resistance parts such as grinding balls and lining plates in tube mills. Under this working conditions, the fial- ure of wear resistant white irons is generally caused by fatigue spalling. The martensitic high chromium cast iron (W_+Cr=15/100) has good wear resistance, but its cost is higher. The impact wear resistance of low chromium cast iron sometimes is not good. In the present paper, a new wear resistant material-low Cr-Si cast iron was introduced.