Phenomena at three-phase electroslag remelting |
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Authors: | Zhong-li Liu Lev Medovar Ganna Stovpchenko Volodymyr Petrenko Artem Sybir Yev Volchenkov |
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Affiliation: | 1. Yantai University, Yantai, 264005, Shandong, China;2. E. O. Paton Electric Welding Institute, Kyiv, 03180, Ukraine;3. National metallurgical academy of Ukraine, Dnipro, 49600, Ukraine |
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Abstract: | The electroslag remelting (ESR) process is widely used to produce high-quality ingots and billets for high-alloyed steels and alloys.Both the single-phase and three-phase alternating current diagram with bifilar and monofilar connection are in use for heavy ingot manufacturing.The numerical simulation of the three-phase bifilar circuit for the 120 t three-phase bifilar six-electrode ESR furnace at different variants of electric connection was presented and discussed.At the bifilar diagram of power supply,the geometrical location of electrodes in a mould holds critical importance for performances:the close location of bifilar pair electrodes provides the highest heat productivity,but the equidistant location of electrodes gives a much more uniform heat distribution.The monofilar mulit-electrode diagram of three-phase connection without phase shift shows the most uniform distribution of potential and heat generation as well as a favorable magnetic field that makes this kind the most promising for providing a high quality of heavy ingots. |
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Keywords: | electroslag remelting three-phase circuit bifilar monofilar simulation heavy ingot |
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