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<p>Under high-temperature, heavy-load, and intense friction conditions, developing protective coatings for critical metallurgical components has become an effective strategy to reduce costs and enhance production efficiency. This study addresses the high-wear resistance requirements of hot-rolling descaling rollers by fabricating FeMnCoCrNi-WC coatings using plasma cladding technology. And systematically study its wear behavior at temperatures of 25, 200, and 400&#xa0;°C. The results reveal that the coatings exhibit excellent wear resistance at room temperature; however, wear depth and volumetric wear rate increase with temperature, leading to a decline in wear performance. The oxide film formed at high temperatures provides a lubricating effect, reducing the average friction coefficient from 0.69 at 25&#xa0;°C to 0.48 at 200&#xa0;°C and ultimately to 0.42 at 400&#xa0;°C. Meanwhile, the wear mechanism transitions from oxidation wear and abrasive wear to a composite mode of oxidation wear, abrasive wear, and adhesive wear. These findings effectively address the limitations in the comprehensive performance of traditional Ni-based WC coatings and provide crucial theoretical guidance for the design and optimization of protective coatings for critical components in hot-rolling production lines.</p>

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Study on the Wear Behavior of FeMnCoCrNi-WC Coatings on the Surface of Dephosphorization Rolls

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • Lianghai Feng,
  • Kailiang Qiu,
  • Hongxi Ge,
  • Li Zhang,
  • Yongjun Chen,
  • Yongjun Feng,
  • Zhiwen Xie

摘要

Under high-temperature, heavy-load, and intense friction conditions, developing protective coatings for critical metallurgical components has become an effective strategy to reduce costs and enhance production efficiency. This study addresses the high-wear resistance requirements of hot-rolling descaling rollers by fabricating FeMnCoCrNi-WC coatings using plasma cladding technology. And systematically study its wear behavior at temperatures of 25, 200, and 400 °C. The results reveal that the coatings exhibit excellent wear resistance at room temperature; however, wear depth and volumetric wear rate increase with temperature, leading to a decline in wear performance. The oxide film formed at high temperatures provides a lubricating effect, reducing the average friction coefficient from 0.69 at 25 °C to 0.48 at 200 °C and ultimately to 0.42 at 400 °C. Meanwhile, the wear mechanism transitions from oxidation wear and abrasive wear to a composite mode of oxidation wear, abrasive wear, and adhesive wear. These findings effectively address the limitations in the comprehensive performance of traditional Ni-based WC coatings and provide crucial theoretical guidance for the design and optimization of protective coatings for critical components in hot-rolling production lines.