| 重力对全位置TIG焊熔池温度场与流场影响的有限元分析 |
| |
| 引用本文： | 刘文吉,李亮玉,岳建锋,王天琪.重力对全位置TIG焊熔池温度场与流场影响的有限元分析[J].焊接学报,2015,36(3):76-79,84. |
| |
| 作者姓名： | 刘文吉 李亮玉 岳建锋 王天琪 |
| |
| 作者单位： | 1.天津工业大学 天津市现代机电装备技术重点实验室, 天津 300087;哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001 |
| |
| 基金项目： | 国家自然科学基金资助项目(U1333128);哈尔滨工业大学先进焊接与连接国家重点实验室基金资助项目(AWJM13-08) |
| |
| 摘 要： | 建立了全位置TIG焊接中平焊、45°下向焊、立焊下向焊的熔池温度场、流场数值计算模型,计算了不同焊接位置以及不同重力加速度值情况下熔池的温度场和流场,分析了重力方向和大小对熔池内流场和温度场的影响规律;发现重力方向对熔池内液态金属的流场、温度场影响明显,液态金属的流动影响温度场分布明显,重力大小对熔池流场的分布形态没有影响,但是对流动速度影响明显. 得到的结论对于研究熔池失稳判定依据、指导设计全位置TIG焊乃至MAG焊工艺具有一定的参考价值.
|
| 关 键 词： | 全位置焊接 重力 有限元 温度场 |
| 收稿时间： | 2013/12/18 0:00:00 |
Effects of gravity on temperature field and fluid flow distribution of all-position TIG welding using finite element method |
| |
| LIU Wenji,LI Liangyu,YUE Jianfeng and WANG Tianqi.Effects of gravity on temperature field and fluid flow distribution of all-position TIG welding using finite element method[J].Transactions of The China Welding Institution,2015,36(3):76-79,84. |
| |
| Authors: | LIU Wenji LI Liangyu YUE Jianfeng and WANG Tianqi |
| |
| Affiliation: | 1.Tianjin Key Laboratory of Modern Mechatronics Equipment Technology, Tianjin Polytechnic University, Tianjin 300160, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China2.Tianjin Key Laboratory of Modern Mechatronics Equipment Technology, Tianjin Polytechnic University, Tianjin 300160, China |
| |
| Abstract: | Numerical model of temperature field and fluid flow field was built to study the effects of gravity on different welding positions and different gravity values. Temperature field and fluid flow field of flat position, 45° position and 90° position with downward speed were calculated, respectively. The results showed that fluid flow of 90° position was far more intense than the one of flat position, which affected the temperature distribution and caused molten metal flowing downward. The presence of gravity had no influence on fluid flow distribution morphology, but affected the flowing speed significantly. Conclusions of this study can be used on the research of welding pool instability judgment basis and deciding parameters of all position TIG or MAG welding. |
| |
| Keywords: | @@ |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
