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<p>The injection mechanism is a critical component of the die casting machine, which is prone to accelerated wear due to thermal deformation. By incorporating cooling water at the end of the injection punch, it is possible to effectively lower the joint temperature and force, thereby enhancing the temperature control and reducing deformation of the injection punch. Despite the relatively minor influence of cooling water on the injection mechanism, this approach contributes to mitigating wear and enhancing the overall performance of the mechanism. Through numerical simulations conducted with COMSOL software, it was determined that a cooling water parameter range of 20 °C with a flow rate of 0.6 m/s yields the best results. In parallel, friction and wear experiments revealed that selecting H13 steel for the injection chamber and ductile cast iron QT500-7 for the injection punch, along with the use of a non-graphite plunger lubricant for cooling and lubrication, can minimize wear and failure occurrences.</p>

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Friction and wear study of die casting machine plunger under thermo-fluid-solid coupling

  • 期刊论文

  • 发表日期：

    2025年3月3日

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  • Yuefeng Leng,
  • Chunlai Cui,
  • Zhichao Jiang

摘要

The injection mechanism is a critical component of the die casting machine, which is prone to accelerated wear due to thermal deformation. By incorporating cooling water at the end of the injection punch, it is possible to effectively lower the joint temperature and force, thereby enhancing the temperature control and reducing deformation of the injection punch. Despite the relatively minor influence of cooling water on the injection mechanism, this approach contributes to mitigating wear and enhancing the overall performance of the mechanism. Through numerical simulations conducted with COMSOL software, it was determined that a cooling water parameter range of 20 °C with a flow rate of 0.6 m/s yields the best results. In parallel, friction and wear experiments revealed that selecting H13 steel for the injection chamber and ductile cast iron QT500-7 for the injection punch, along with the use of a non-graphite plunger lubricant for cooling and lubrication, can minimize wear and failure occurrences.