Effect of Pulse Waveform on the Distribution of Electromagnetic Field in Melt
Author of the article:ZHAO Jingi;LIU Guochao;QIN Hongxing;XU Zhishuai
Author's Workplace：Department of Mechanical and Electrical Engineering,Tangshan University,Tangshan 063000,China;Center of Advanced Solidification Technology,Shanghai University,Shanghai 200436,China
Key Words：pulse waveform melt electromagnetic field numerical simulation
Abstract：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.
