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<p>The inductor is an indispensable component of continuous hot-dip galvanizing and its performance is closely associated with the final strip coating quality. Herein, a mathematical model coupled with electromagnetic field, flow field, heat transfer, and species transport was established. The electromagnetic force, Joule heating, dross generation, and transport behavior under different inductor channel cross-section ratios (CR) and induction heating (IH) currents were investigated. The results show that the channel CR significantly affects the distribution of electromagnetic force and Joule heating. When the middle channel cross section is twice that of a side channel, the electromagnetic force and Joule heating are correspondingly double. Moderate reduction of the channel CR can enhance flow velocity and reduce overall temperature fluctuations in the bath. Most dross generation between the ingot, snout, and inductor tends to accumulate at the bath bottom. Within a single ingot melting cycle, CR of 0.43 and IH current of 1200&#xa0;A produce the lowest total mass of dross, measuring 1.36&#xa0;kg in the bath and 0.071&#xa0;kg in the V-zone. These findings may serve as a guideline for improving inductor performance and mitigating dross generation in galvanizing process.</p>

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Optimization of Inductor Performance Based on Temperature and Dross Generation in Hot-Dip Galvanizing

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Xianwen Luo,
  • Qiao Cheng,
  • Haibiao Lu,
  • Yunbo Zhong,
  • Zuosheng Lei

摘要

The inductor is an indispensable component of continuous hot-dip galvanizing and its performance is closely associated with the final strip coating quality. Herein, a mathematical model coupled with electromagnetic field, flow field, heat transfer, and species transport was established. The electromagnetic force, Joule heating, dross generation, and transport behavior under different inductor channel cross-section ratios (CR) and induction heating (IH) currents were investigated. The results show that the channel CR significantly affects the distribution of electromagnetic force and Joule heating. When the middle channel cross section is twice that of a side channel, the electromagnetic force and Joule heating are correspondingly double. Moderate reduction of the channel CR can enhance flow velocity and reduce overall temperature fluctuations in the bath. Most dross generation between the ingot, snout, and inductor tends to accumulate at the bath bottom. Within a single ingot melting cycle, CR of 0.43 and IH current of 1200 A produce the lowest total mass of dross, measuring 1.36 kg in the bath and 0.071 kg in the V-zone. These findings may serve as a guideline for improving inductor performance and mitigating dross generation in galvanizing process.