轧后冷却过程中板坯内部温度和组织预测模型的研究  

Investigation on the general mathematics model of temperature and microstructure in the slab during continuous cooling

作　　者：张雄[1] 温治[1] 豆瑞峰[1] 周钟檀[1] 李志强[1] 

机构地区：[1]北京科技大学热能工程系

出　　处：《冶金能源》2012年第6期26-29,45,共5页Energy For Metallurgical Industry

摘　　要：对板坯轧后冷却过程建立了板坯内部的温度和组织的预测模型,并考虑了温度变化和组织转变之间的耦合影响。实际过程中,板坯在进入冷却段前,其内部大量残余应变会对奥氏体过冷转变有较大影响,利用"有效奥氏体晶粒尺寸法"对组织预测模型进行了修正,并给出了温度模型和组织模型之间的耦合求解思路。基于该模型可对板坯轧后冷却过程中的温度、组织进行精确的预测,从而实现对已有的冷却工艺的优化控制。The intention was to establish the general mathematics model of temperature and microstructure inside of the slab during continuous cooling,and the coupling relationship between the variation of temperature and microstructure was considered.The model of phase transformation was corrected by equivalent austenite grain size in order to considering the effect of residual strain on microstructure variation,and the coupled solving procedure was also promoted.The model conducted can be used to optimize the operating parameters of the cooling process.

关 键 词：轧后冷却 耦合模型 组织预测 

分 类 号：TG331[金属学及工艺—金属压力加工]