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Abstract <p>Small-capacity electric arc furnaces (EAFs) are used in foundries of many machine-building enterprises. Their operating mode and melting technology feature predetermined approaches to enhancing their operational efficiency that differ from the engineering and technological methods used in the operation of large-capacity electric arc furnaces at metallurgical plants. However, the basic principle for both is the selection of the optimal electrical mode and the coordination of the electrical parameters of the furnace and the power source—the furnace transformer—based on the electrical and operating characteristics of the furnace. A significant difference of small-capacity EAFs is the shift-based mode of operation. This leads to a significant and variable share of energy consumption for heat accumulation by the lining from melt to melt, which does not allow achieving specific energy consumption in foundries that would meet GOST (State Standard). The issues related to enhancing the energy efficiency of small-capacity EAFs operated in foundries are considered.</p>

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The Operational Efficiency of Electric Arc Furnaces in Foundries

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • L. P. Goreva,
  • A. I. Aliferov,
  • R. A. Bikeev

摘要

Abstract

Small-capacity electric arc furnaces (EAFs) are used in foundries of many machine-building enterprises. Their operating mode and melting technology feature predetermined approaches to enhancing their operational efficiency that differ from the engineering and technological methods used in the operation of large-capacity electric arc furnaces at metallurgical plants. However, the basic principle for both is the selection of the optimal electrical mode and the coordination of the electrical parameters of the furnace and the power source—the furnace transformer—based on the electrical and operating characteristics of the furnace. A significant difference of small-capacity EAFs is the shift-based mode of operation. This leads to a significant and variable share of energy consumption for heat accumulation by the lining from melt to melt, which does not allow achieving specific energy consumption in foundries that would meet GOST (State Standard). The issues related to enhancing the energy efficiency of small-capacity EAFs operated in foundries are considered.