两种热处理工艺对CADI铸球力学性能和耐磨性的影响  

Mechanical Properties and Wear Resistance of the CADI Balls Treated by Two Kinds of Heat Treatment

作　　者：姚永茂 周健[2] 陈全心 陈灿光 李卫[2] 

机构地区：[1]宁国市华丰耐磨材料有限公司,安徽宁国242300 [2]暨南大学先进耐磨蚀及功能材料研究院,广东广州510632

出　　处：《铸造》2017年第7期749-753,共5页Foundry

摘　　要：分别采用盐浴等温淬火和油淬+空气中等温处理对同样化学成分的CADI铸球进行热处理。结果表明:两种热处理工艺铸球的显微组织均为石墨球、碳化物、针状铁素体和残余奥氏体组成,硬韧性匹配较好,铸球的硬度和冲击韧性相近。油淬+空气中等温处理铸球表面耐磨性略好于盐浴等温处理,盐浴等温处理铸球心部耐磨性略好于油淬+空气中等温处理。可采用油淬+空气中等温处理工艺替代盐浴等温热处理工艺处理CADI铸球。The CADI balls with the same chemical compositions were treated by two different methods, namely salt bath isothermal heat treatment and oil quenching air isothermal treatment The test results show that the both microstructures of CADI balls treated by the two methods are spherical graphite, carbide, acicular ferrite and retained austenite and their hardness and toughness match well and are similar. The surface wear resistance by oil quenching and air isothermal treatment is better than that by salt bath isothermal quenching, while the core wear resistance is opposite. So oil quenching and air isothermal treatment can substitute for salt bath isothermal quenching treatment in treating the CADI casting balls.

关 键 词：CADI铸球 盐浴等温热处理 油淬+空气等温处理 

分 类 号：TG164.2[金属学及工艺—热处理]