A Comprehensive Mathematical Model of Electroslag Remelting with Two Series-Connected Electrodes Based on Sequential Coupling Simulation Method

Tong, Wenjie; Li, Wanming; Zang, Ximin; Li, Huabing; Li, Dejun

doi:10.3390/met10050658

Cited by 1 publication

(1 citation statement)

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“…In order to ensure product quality and meet the requirements of large-scale ingot, the electroslag remelting process is adopted to refine the slab produced by the continuous casting process on the basis of a series of advanced smelting technologies. Combined with the characteristics of the electrode material and product shape, a bipolar series electroslag furnace is used for production [8][9][10][11]. The physical phenomena in the electroslag remelting process are very complicated, and there is a complex interaction between the electromagnetic field, flow field and temperature field.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Electromagnetic Field in Slab Electroslag Remelting Process with Double Electrode Series

Li,

Jing,

Sun

2023

Metals

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In this paper, a mathematical model of an electromagnetic field during an electroslag remelting process of industrial-scale slab was established using a Maxwell 3D module in Ansys Electromagnetics Suite. The distribution characteristics of the magnetic field intensity, current density and Joule heat density during the electroslag remelting process were analyzed in detail. On this basis, the influence of the current frequency on the electroslag remelting process of an industrial scale is studied, and the influence of process parameters such as the slag pool depth, electrode insertion depth and ingot height on the electromagnetic field is also considered. The results show that the Joule heat generated in the slag pool is much greater than that of the electrode and the ingot. The maximum Joule heat is located at the contact between the electrode corner and the slag pool, and the Joule heat near the middle of the two electrodes is greater than the rest. With the increase in the current frequency, the current density distribution in the slag cell is basically unchanged. The current density inside the two electrodes increases obviously with the current frequency. When the current frequency increases from 10 Hz to 50 Hz, the maximum current density at the inner surface of the electrode increases by 14.7%. The current distribution at the lower side of the electrode in the slag pool is relatively uniform, and the current density in this region decreases with the increase in the height of the slag pool and the increase in the depth of the electrode inserted into the slag pool.

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Section: Introductionmentioning

confidence: 99%