金属型铸造磨球不同保温温度组织分析  

Microstructure analysis of grinding balls at different holding temperatures in the permanent mold casting

作　　者：程巨强[1] CHENG Juqiang(Xi^an Technological University,Xi’an 710032,Shanxi China)

机构地区：[1]西安工业大学,陕西西安710032

出　　处：《中国铸造装备与技术》2018年第1期18-21,共4页China Foundry Machinery & Technology

摘　　要：研究了金属型铸造Km TBCr12高铬铸铁磨球铸态空冷和铸造后不同温度保温空冷磨球的组织。结果表明,铸态Km TBCr12组织由屈氏体、不同形状的共晶碳化物和奥氏体组成。共晶碳化物主要以板条状、块状、菊花状分布,铸造后开模冷却,350~500℃保温处理,磨球的组织均为屈氏体和碳化物组成,600℃保温处理组织为粒状珠光体组织。The casting air cooling and microstructure of KmTBCrl2 high-chromium cast iron grinding ballsat different holding temperaturesinpermanent mold casting have been studied.The results show that micro structure of as-cast KmTBCrl2 grinding ballsmainly consists of troostite,austenite and eutectic carbideat different shapes.The eutectic carbide has been mainly in plate,block,and chrysanthemum form.The microstructure of KmTBCrl2 grinding ballsconsists of troostite and austenite after temperature holding treatment at 350~500°C.The microstructure has been granular pearlite when the temperature holding treatmentis at 600°C.

关 键 词：KmTBCr12 磨球 保温温度 组织 

分 类 号：TG143.7[一般工业技术—材料科学与工程]