| 电弧热流分布模式对GMAW焊接温度场的影响 |
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| 引用本文： | 孙俊生,武传松.电弧热流分布模式对GMAW焊接温度场的影响[J].焊接学报,1998,19(4):55-60. |
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| 作者姓名： | 孙俊生 武传松 |
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| 作者单位： | 济南山东工业大学 |
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| 基金项目： | 国家教委留学回国人员科研基金 |
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| 摘 要： | 提出了ＧＭＡＷ熔池表面产生较大变形时的电弧热流分布模式，以此为基础并考虑熔滴过渡过程及焊缝余高，建立了焊接温度场的数值分析模型，通过数值模拟，定量分析了焊接工艺参数－ＧＭＡＷ熔池表面变形－电弧热流分布－熔池形态及其温度是之间的相互影响。焊接工艺试验结果，与高斯热源模型相比，采用本文给出的ＧＭＡＷ电弧热液分布模型的计算结果更符合实际。
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| 关 键 词： | 电弧热液 分布模式 GMAW 焊接 温度场 |
| 收稿时间： | 1997/6/25 0:00:00 |
| 修稿时间： | 1998/7/20 0:00:00 |
Influence of Arc Heat-flux Distribution on Temperature Profiles in GMAW |
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| Sun Junsheng and Wu Chuansong.Influence of Arc Heat-flux Distribution on Temperature Profiles in GMAW[J].Transactions of The China Welding Institution,1998,19(4):55-60. |
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| Authors: | Sun Junsheng and Wu Chuansong |
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| Affiliation: | Shandong University of Technology, Jinan and Shandong University of Technology, Jinan |
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| Abstract: | A heat flux distribution model of arc which suits for large surface deformation of GMAW weld pool is given in this paper.Based on this model and the consideration of droplet transfer process and the weld reinforcement,a numerical analysis model of welding heat flow field and a calculating program are developed.By numerical simulation,the interactions of welding process parameters,GMAW weld pool surface deformation,arc heat flux distribution,weld pool geometry and temperature profiles are quantitatively analyzed.The experiment results show that compared with the Gaussian model of arc heat flux,the heat flux distribution model of GMAW arc given in this paper accords with practical situation much beffer. |
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| Keywords: | arc heat flux distribution model GMAW temperature field |
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