Optimization of Vanadium Content for Achieving Higher Wear Resistance and Hardness in High Cr-V White Cast Irons for Ball Tube Mill Liner Application

摘要: The liner materials, being used, at present from high Cr cast iron grades in coal fired tube mills are less promising due to lower combination of abrasion wear resistance, hardness and impact toughness properties, thus giving life only 25,000 35,000 hours. In this study, focus was given develop a Cr-V resistance with higher strength for ball mill application. developed possesses abrasive simultaneously having 40,000 50,000 This grade made using induction melting sand casting method. heat treated two stages achieve mechanical properties. Various tests like chemical analysis, wear, were conducted on the above material. Abrasion test results show low loss value (2.7 4.4 mg/min). Hardness (57 64 HRC) (44 57 J/cm2). Prototype liners manufactured tested 250MW site. Results obtained site testing also discussed study.