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<p>Compacted graphite iron was widely used in the manufacture of engine parts, but its cutting performance was poor due to its strong adhesion. When machining CGI, the tool experienced serious damage and wear, resulting in a very short tool life. In order to solve this problem, micro-pit texture was prepared on the surface of drill tool, and the effects of feed rate, texture distance from the edge and texture spacing on the cutting performance of micro-texture drill tool were studied. The effects of textured position and machining parameters on tool wear, tool–chip contact length, chip morphology and hole wall roughness were analyzed. The experimental results showed that texture with 20&#xa0;μm distance from the cutting edge and 40&#xa0;μm spacing at the rake face and cross-edge of the drill tool can significantly alleviate tool wear and changed chip morphology. In the experiments, it was found that the graphite binder attached to the edge of the texture could be used as a solid lubricant, so that the texture could continue to play a better role, reduce tool wear, and maintain the tool cutting ability.</p>

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Wear Characteristics of Textured Tool with Micro-holes for Compacted Graphite Iron Micro-drilling

  • 期刊论文

  • 发表日期：

    2025年3月4日

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  • Chuang Zhang,
  • Fengrong Ge,
  • Yonggang Hou,
  • Shen Yang,
  • Yiquan Li,
  • Peng Yu,
  • Zhe Wang,
  • Zhanjiang Yu,
  • Jinkai Xu

摘要

Compacted graphite iron was widely used in the manufacture of engine parts, but its cutting performance was poor due to its strong adhesion. When machining CGI, the tool experienced serious damage and wear, resulting in a very short tool life. In order to solve this problem, micro-pit texture was prepared on the surface of drill tool, and the effects of feed rate, texture distance from the edge and texture spacing on the cutting performance of micro-texture drill tool were studied. The effects of textured position and machining parameters on tool wear, tool–chip contact length, chip morphology and hole wall roughness were analyzed. The experimental results showed that texture with 20 μm distance from the cutting edge and 40 μm spacing at the rake face and cross-edge of the drill tool can significantly alleviate tool wear and changed chip morphology. In the experiments, it was found that the graphite binder attached to the edge of the texture could be used as a solid lubricant, so that the texture could continue to play a better role, reduce tool wear, and maintain the tool cutting ability.