焊管2011，Vol.34Issue(3)：18-23,6.
连续油管环焊温度场及残余应力场数值分析
Numerical Analysis on Circumferential Welding Temperature Field and Residual Stress Field for Coiled Tubing
摘要
Abstract
The circumferential welding temperature field and residual stress distribution of the coiled tubing were simulated initially with the method of finite element method. The results showed that temperature gradient was great near the weld and remained even away from the weld. With the movement of welding thermal source,the temperature center also moved and the maximum temperature was up to the melting point of the base metal;the temperature dropped rapidly after each welding, the closer to the interlayer temperature and the longer cooling time need. Post welding residual stress distributed near to weld only a few dozen Megapascal in other parts of pipe body, the maximum residual stress 592 MPa presented in the center of weld wall thickness. It suggests the residual stress in weld should be eliminated by related heat treatment technology.关键词
连续油管/环焊/有限元/温度场/残余应力场Key words
coiled tubing/ circumferential welding/ finite element/ temperature field/ residual stress field分类
矿业与冶金引用本文复制引用
王文武,李继红,赵鹏康,毕宗岳,余晗,张敏..连续油管环焊温度场及残余应力场数值分析[J].焊管,2011,34(3):18-23,6.基金项目
陕西省教育厅自然科学基金资助项目(00K904)陕西省重点学科建设专项资金资助项目(00X901) （00K904）
