冷轧辊坯正火冷却过程温度场和组织关系的模拟预测  

RELATIONSHIP BETWEEN MICROSTRUCTURE OF Cr5 COLD ROLL BLANK AND TEMPERATURE FIELD DURING NORMALIZING PREDICTED BY SIMULATION

作　　者：巩玄君[1] 杨弋涛[1] 张洪奎[2] 邵光杰[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]宝钢钢铁股份有限公司特殊钢分公司

出　　处：《上海金属》2009年第4期46-50,共5页Shanghai Metals

摘　　要：针对冷轧辊坯生产中网状碳化物超标问题,借助于模拟软件DEFORM,并结合恰当物性参数的使用,建立了较为准确求解Cr5锻钢冷轧辊正火冷却过程的物理模拟方法,建立了冷却速度与钢组织的关系。模拟结果表明,大于0.21℃/s的临界冷却速度可望有效抑制网状碳化物的析出,此工作为热处理工艺优化奠定了重要的基础。In order to resolve the problem of too much network carbide appearing in the cold roll blank of Cr5 steel during production, the relationship between microstructure and cooling speed was set to simulate the normalizing process of Cr5 forged cold roll blank by software DEFORM combined with the assistance of some physical parameters. Simulation results showed that cooling rate being faster than critical 0.21 ℃/s could prevent the carbide precipitating around the grain boundary during production.

关 键 词：Cr5钢 冷轧辊坯 正火 温度场 网状碳化物 模拟预测 

分 类 号：TG333.17[金属学及工艺—金属压力加工] TS34[轻工技术与工程]