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<p>The thermal shock resistance, high-temperature wear resistance, and application limitations of plating Cr coating, plasma cladding WC–Ni60 coating, and HVAF (high-velocity air-fuel) WC–Cr<sub>3</sub>C<sub>2</sub>–Ni coating were investigated in this study. The plasma cladding coating was incomplete and could not bear the important task of protecting the roller substrate. Both plating Cr coating and WC–Cr<sub>3</sub>C<sub>2</sub>–Ni coating exhibited excellent resistance to thermal shock at 800 ℃, and provided long-term protection for the substrate. When simulating the equivalent wear threat of 100 tons of steel, the two coatings reduced the surface friction coefficient of the roller body. The WC–Cr<sub>3</sub>C<sub>2</sub>–Ni coating had the best effect on reducing the volume of wear loss on the roller body. In terms of environmental impact, HVAF spraying showed far more environmental compatibility than the electroplating process and was the best choice for depositing a wear-resistant coating on a crystallization roller in the era of green metallurgy policy. This experiment reduced the loss of production line in actual production and revealed the limitations of advanced coating preparation technology at present. The results also provided theoretical support for the selection of high-performance coatings in other industrial environments.</p>

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Study on the practicability of advanced cermet composite coating technology on the surface of crystallization roller and the improvement measures of coatings failure

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • Diyao Zhang,
  • Jie Gao,
  • Zhenli Liu,
  • Sheng Qu,
  • Zijun Peng,
  • Jingkun Yu,
  • Lei Yuan

摘要

The thermal shock resistance, high-temperature wear resistance, and application limitations of plating Cr coating, plasma cladding WC–Ni60 coating, and HVAF (high-velocity air-fuel) WC–Cr3C2–Ni coating were investigated in this study. The plasma cladding coating was incomplete and could not bear the important task of protecting the roller substrate. Both plating Cr coating and WC–Cr3C2–Ni coating exhibited excellent resistance to thermal shock at 800 ℃, and provided long-term protection for the substrate. When simulating the equivalent wear threat of 100 tons of steel, the two coatings reduced the surface friction coefficient of the roller body. The WC–Cr3C2–Ni coating had the best effect on reducing the volume of wear loss on the roller body. In terms of environmental impact, HVAF spraying showed far more environmental compatibility than the electroplating process and was the best choice for depositing a wear-resistant coating on a crystallization roller in the era of green metallurgy policy. This experiment reduced the loss of production line in actual production and revealed the limitations of advanced coating preparation technology at present. The results also provided theoretical support for the selection of high-performance coatings in other industrial environments.