低合金白口铸铁共晶碳化物团球化工艺的研究  

The Study on the Spheroidizing of Low Alloy White Cast Iron's Eutectic Carbide

作　　者：符寒光 符定梅 

机构地区：[1]北京冶金设备研究院,北京100029 [2]无锡苏嘉镁砖有限公司焊管厂,江苏无锡214151

出　　处：《湖南有色金属》2001年第1期27-29,57,共4页Hunan Nonferrous Metals

摘　　要：低合金白口铸铁是一种耐磨性能优良的铸铁材料，但其组织中共晶碳化物呈连续网状分布，削弱了基体的连续性，导致铸铁脆性过大。我们探讨了复合变质处理和热变形处理对共晶碳化物团球化的影响，同时还研究了共晶碳化物团球化对低合金白口铸铁机械性能和耐磨性的影响，结果表明，共晶碳化物团球化有利于白口铸铁韧性和耐磨性的大幅度提高。Low alloy white cast iron is a kind of cast iron material having excellent wear－ resistance,eutectic carbide in the structure is distributed with net shape,continuity of basic body is destroyed,the brittlement of cast iron is very large.We discuss the effects of composite modification and hot deformation on the spheroidizing of low alloy white cast iron's eutectic carbide,and research the effects of the spheroidizing of eutectic carbide on mechamical properties and wear－ resistance of low alloy white cast iron.The results obtained show the spheroidizing of eutectic carbide can increase toughness and wear－ resistance by a big margin.

关 键 词：白口铸铁 共晶碳化物 团球化 变质处理 热变形处理 

分 类 号：TG143.1[一般工业技术—材料科学与工程]