H型钢残余应力控制研究  

Control Research on Residual Stress of H-Beam

作　　者：马劲红[1] 姚晓晗 任喜强 陶彬[1] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063009

出　　处：《铸造技术》2014年第7期1616-1618,共3页Foundry Technology

摘　　要：建立成品规格为200 mm×200 mm×8 mm×12 mm的H型钢连轧模型,利用大型有限元软件ANSYS/LS-DYNA对H型钢的连轧过程进行模拟,分析了H型钢万能轧制过程中腹板和翼缘的延伸不均匀、断面温差等对残余应力的影响。并通过金相观测实验,分析轧件有残余应力时微观组织与无残余应力时的不同。从有限元分析和实验结果可以看出,合理分配腹板和翼缘的压下量及控制冷却速度降低断面温差,可以降低H型钢残余应力。A continuous rolling model of H-beam which trimmed size is 200 mm×200 mm×8 mm×12 mm was established.The continuous rolling process of H-beam was simulated using the large finite element software ANSYS/LS-DYNA. The effects of non-uniform elongation of web and flange, section temperature difference on the residual stress were analyzed.The microstructure differences with residual stress and without residual stress were analyzed through metallographic observations. The finite element analysis and the experimental results show that the reasonable distribution of the rolling reduction of flange and web, controlling cooling speed and decreasing the temperature difference of sectional can reduce the residual stress of H-beam.

关 键 词：H型钢 残余应力 不均匀延伸 断面温差 

分 类 号：TG335[金属学及工艺—金属压力加工]