超快冷对H型钢冷却变形的影响  

Effect of Ultra-Fast Cooling on Cooling Distortion for H-Beam Steel

作　　者：赵宪明[1] 郭飞[1] 王丽娜[1] 吴迪[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2012年第7期949-952,共4页Journal of Northeastern University(Natural Science)

基　　金：国家科技支撑计划项目(2007BAE30B05)

摘　　要：H型钢在冷却过程中不可避免地会产生温度不均,进而造成在H型钢横断面上冷却变形不均匀的现象,改善H型钢冷却变形均匀性成为H型钢研究重点.利用有限元分析软件ANSYS分别对H型钢超快速冷却过程中的内并外扩现象进行了模拟,并将模拟结果和实测数据对比,两者基本吻合.内并外扩原因是H型钢上下槽的冷却速度不均,造成残余应力过大.通过改善超快冷设备结构布置方式和过程控制模式,改进后的模拟和实测数据结果均表明内并外扩问题得到解决.Uneven temperature distribution in cooling process are produced inevitably, causing theuneven distortion phenomenon in H-beam cross section. This research focused on how to improve H-beam cooling distortion. The cooling distortion was simulated in the ultra-fast cooling process by finite element analysis software ANSYS. The simulation results are in good agreement with the measured data. The cause of out of square is large residual stress due to the uneven cooling rate between upper and lower groove of the H-beam. Both simulation results and measured data showed that the out of square can he solved by improving the structure of ultra-fast cooling equipment layout and process control made.

关 键 词：H型钢 超快速冷却 有限元 内并外扩 温度场 位移场 

分 类 号：TG335.42[金属学及工艺—金属压力加工]