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脉冲波形对金属熔体内部电磁场分布的影响
Effect of Pulse Waveform on the Distribution of Electromagnetic Field in Melt
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- DOI:
- 作者:
- 赵静 刘国超 秦红星 徐智帅
ZHAO Jingi;LIU Guochao;QIN Hongxing;XU Zhishuai
- 作者单位:
- 唐山学院机电工程系 上海大学先进凝固技术中心
Department of Mechanical and Electrical Engineering,Tangshan University,Tangshan 063000,China;Center of Advanced Solidification Technology,Shanghai University,Shanghai 200436,China
- 关键词:
- 脉冲波形 金属熔体 电磁场 模拟
pulse waveform melt electromagnetic field numerical simulation
- 摘要:
- 建立了金属熔体内部电磁场分布的3-D模型,运用Maxwell软件模拟了正弦波、方形波和三角波脉冲电流作用下熔体内部磁感应强度的分布情况。结果表明,脉冲波形对金属熔体内部电磁场的分布及金属凝固组织的细化效果有很重要的影响。相同脉冲电流峰值和脉宽时,方形波的脉冲电流在金属熔体内部产生的感应电磁场强度大于三角波和正弦波。
A 3-D model of the electromagnetic field distribution in the metal melt was established, and Maxwell software was used to simulate the distribution of magnetic induction intensity in the melt under the action of sinusoidal, square and triangular pulse currents. The results show that the pulse waveform has a very important effect on the distribution of the electromagnetic field inside the metal melt and the thinning effect of the solidification structure. When the pulse current peak and pulse width are the same, the induced electromagnetic field generated by the pulse current of square wave in the metal melt is stronger than that of triangle wave and sine wave.