Development of Wear-resistant Liner of Cr26 High Chromium Cast Iron Cement Ball Mill
Author of the article:LYU Yuan;SUI Wenjie;QI Haiquan;QIN Xiangzhi
Author's Workplace：l.Guangxi Key Laboratory of New Energy and Building Energy Saving,Guiling university of technology,Guilin 541004,China;Xinguang Heat Treatment Industry Co.,Ltd.,(Kunshan),Kunshan 2153331,China
Key Words：Cr26 type high chromium cast iron orthogonal test wear resistance
Abstract：
A Cr26 high chromium cast iron cement ball mill liner material with high wear resistance was developed. The optimum heat treatment technology of test cast iron was obtained by orthogonal test. The results show that the optimum heat treatment technology of the test materials is 1 050 ℃×3 h oil cooling +300 ℃×2 h air cooling, the microstructure is tempered Martensite+(Fe,Cr)7C3 eutectic carbide+secondary carbide +residual austenite, hardness HRC58, impact toughness3 J/cm2. In the best heat treatment state, the test material has excellent wear resistance of 12.739 g-1, but its impact toughness is low. After the best heat treatment process, the test material has excellent wear resistance and can be used as the lining material of cement ball mill with high wear resistance.
