TA2棒材斜轧穿孔过程三维热力耦合有限元分析  

3D thermo-mechanical coupling finite element analysis of piercing process for TA2 bar billet

作　　者：刘江林[1] 曾卫东[1] 吴欢[2] 赵永庆[2] 王腾[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]西北有色金属研究院,陕西西安710016

出　　处：《锻压技术》2012年第3期59-62,共4页Forging & Stamping Technology

基　　金：教育部"新世纪优秀人才支持计划"(NCET-07-0696)

摘　　要：斜轧穿孔过程中,工件的应变场和温度场分布对金属管坯的成形质量有很大影响。运用三维大变形热力耦合有限元分析软件模拟了TA2合金棒材在曼式穿孔机上进行斜轧穿孔的过程,分析了斜轧穿孔过程中应变场和温度场的变化规律,发现在斜轧穿轧过程中存在明显的纵轧现象,穿孔得到的管坯前端很难保持圆度。通过有限元模拟分析得出的成形规律,对于难变形材料斜轧穿孔技术研究具有重要的理论与实际价值。The distributions of strain and temperature field in the workpiece have a great effect on the tube billet forming quality during piercing process in cross rolling mill.The piercing process of the TA2 alloy in the Mannesmann piercing mill was simulated using 3D thermo-mechanical coupled finite element software,and the change law of the strain and temperature field in the process was analyzed.The results show that longitudinal rolling phenomenon exists in the piercing process and the pierced tube billet front end is difficult to keep roundness.The forming patterns got from the finite element simulation analysis play an important theoretical and practical role in the study of difficult deformation material piercing process technology research.

关 键 词：TA2 斜轧穿孔 热力耦合 有限元模拟 

分 类 号：TG335.62[金属学及工艺—金属压力加工]