高铬铸铁磨球强韧化热处理工艺研究  

Study of the Hardening-toughening Heat Treatment Process of High Chromium Cast Iron Grinding Balls

作　　者：陈勇[1] 葛兴洋 刘兰俊[1] 张蔚[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009 [2]宁国东方碾磨材料股份有限公司,安徽宁国242300

出　　处：《铸造技术》2018年第1期173-177,共5页Foundry Technology

摘　　要：对高铬铸铁磨球分别采取了淬火+回火热处理、常规等温淬火和分级奥氏体化等温淬火热处理,并对组织和性能进行了对比研究。结果表明,磨球经等温淬火后的冲击韧度和抗冲击疲劳性较高。对于服役于大直径球磨机的高铬铸铁磨球,等温淬火热处理工艺较好。The influence of quenching-tempering heat treatment, conventional austempering heat treatment and multi-stage austenitizing austempering heat treatment on the microstructure and property of high chromium cast iron grinding balls were comparative investigated. The results show that the impact toughness and impact fatigue resistance of the grinding balls are higher after austempering. Austempering heat treatment process is helpful for the high chromium cast iron grinding balls served in the large ball mill.

关 键 词：高铬铸铁磨球 等温淬火 分级奥氏体化 冲击韧度 抗冲击疲劳性 

分 类 号：TG156[金属学及工艺—热处理]