李梅,杨胜波,李立军,等.变位磁场强度对电弧熔积中电弧和熔池传热与流动的影响[J].精密成形工程,2024,16(11):178-188.
LI Mei,YANG Shengbo,LI Lijun,et al.Effect of Deflection Magnetic Field Intensity on Heat Transfer and Flow of Arc and Molten Pool in Arc Deposition[J].Journal of Netshape Forming Engineering,2024,16(11):178-188. |
| 变位磁场强度对电弧熔积中电弧和熔池传热与流动的影响 |
| Effect of Deflection Magnetic Field Intensity on Heat Transfer and Flow of Arc and Molten Pool in Arc Deposition |
| 投稿时间：2024-03-08 |
| DOI：10.3969/j.issn.1674-6457.2024.11.021 |
| 中文关键词: 电弧熔积 数值模拟 变位磁场 传热流动 电弧增材制造 |
| 英文关键词: arc deposition numerical simulation deflection magnetic field heat transfer and flow wire arc additive manufacturing |
| 基金项目:湖北省教育厅科研计划(D20211203) |
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| 中文摘要: |
| 目的 研究变位磁场强度对变位磁场作用下电弧熔积中电弧和熔池传热与流动的影响规律与机理。方法 基于流动动力学方程(麦克斯韦方程组、动量守恒方程、连续方程、能量守恒方程)，建立了变位磁场作用下TIG电弧-熔池耦合的数值模型，对比分析了外加不同强度的变位磁场对电弧与熔池传热传质的影响规律与机理。结果 外加变位磁场使电弧发生偏移，电弧等离子体具有偏向一侧与旋转的流动趋势，熔池的整体形貌向x正方向与y负方向发生偏移，熔池除了具有中心向外流动趋势以外，还具有偏向一侧与围绕中心旋转的趋势。随着变位磁场强度的增大，电弧与熔池整体形貌偏移量增大且偏向一侧与围绕中心旋转的趋势增强。结论 外加变位磁场可使电弧发生偏移，且变位磁场强度增大，电弧与熔池整体形貌偏移量增大。 |
| 英文摘要: |
| The work aims to study the effect law and mechanism of deflection magnetic field intensity on the heat transfer and flow of the arc and the molten pool in the arc deposition under the action of the deflection magnetic field. Based on the flow dynamics equations (Maxwell's equations, momentum conservation equations, continuity equations and energy conservation equations), a numerical model of TIG arc-molten pool coupling under the action of a deflection magnetic field was established. The effects of different intensities of the deflection magnetic field on the heat and mass transfer of the arc and the molten pool were compared and analyzed. The external deflection magnetic field caused the arc to shift. The arc plasma had a tendency to shift to one side and rotate. The overall morphology of the molten pool shifted to the positive direction of x and the negative direction of y. In addition to the outward flow of the center, the molten pool also had a tendency to shift to one side and rotate around the center. With the increase of the deflection magnetic field, the overall morphology offset of the arc and the molten pool increased and the tendency to shift to one side and rotate around the center increased. The external deflection magnetic field can make the arc shift, and the intensity of the deflection magnetic field increases, and the offset between the arc and the overall morphology of the molten pool increases. |
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