| 电磁力及其对MIG焊接熔池流场的影响 |
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| 引用本文： | 孙俊生,武传松.电磁力及其对MIG焊接熔池流场的影响[J].物理学报,2001,50(2):209-216. |
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| 作者姓名： | 孙俊生 武传松 |
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| 作者单位： | 山东大学材料学院, |
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| 基金项目： | 教育部优秀年轻教师基金、高等学校重点实验室访问学者基金资助的课题. |
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| 摘 要： | MIG焊接熔池具有不规则的表面边界，温度较高且分布极不均匀，在电磁力、浮力、表面张力等的作用下发生剧烈运动.基于熔池表面变形较大时电弧电流密度的双峰分布模型，建立了电磁力的计算模型.采用数值模拟技术研究了熔池中的流体力学行为，揭示了焊接工艺参数对熔池流场的影响规律.实验表明，计算与实测结果符合良好.
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| 关 键 词： | 电磁力，熔池流场，数值模拟 |
| 文章编号： | 1000-3290/2001/50(02)/0209-08 |
| 修稿时间： | 2000年7月17日 |
THE ELECTROMAGNETIC FORCE AND ITS INFLUENCE ON THE WELDPOOL FLUID FLOW IN MIG WELDING |
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| SUN Jun-sheng,WU CHUAN-SONG.THE ELECTROMAGNETIC FORCE AND ITS INFLUENCE ON THE WELDPOOL FLUID FLOW IN MIG WELDING[J].Acta Physica Sinica,2001,50(2):209-216. |
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| Authors: | SUN Jun-sheng WU CHUAN-SONG |
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| Abstract: | The surface border of weldpool in MIG welding is irregular and the temperature in the pool is very high and is distributed extremely nonuniformly.The violent motion occur under the action of the electromagnetic force,the buoyancy force and the surface tension,etc.According to the bimodal distribution mode for arc current density with a large deformation of the pool surface,the calculation mode for electromagnetic force is developed and described in this paper.Numerical analysis is used to study the hydrodynamics behavior in the weldpool and the effects of welding technical parameters on fluid flow.The experiments show that the predicted results are in good agreement with experimental measurements. |
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| Keywords: | electromagnetism force fluid flow numerical analysis |
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