Scholarlink

<p>WC-Co tungsten carbide possesses excellent properties, including high hardness, wear resistance, strength, heat resistance and corrosion resistance, which has led to its extensive utilisation in material forming and metal processing. During the tungsten carbide cutting process, serrated chips often appear, and they can affect cutting force, temperature and machining quality. Therefore, understanding the characteristics of serrated chips and controlling their formation as a means of enhancing the machining quality of WC–Co tungsten carbides is essential. In this research investigation, orthogonal cutting experiments and finite element simulations were undertaken in order to acquire the cutting force and chip morphology. Polycrystalline diamond (PCD) cutting tools were used for conducting cutting experiments on WC-15Co tungsten carbide. The cutting speeds were between 70 and 140&#xa0;m/min, and the feed rates were between 5 and 25&#xa0;µm/r. The focus of the investigation was on the influence of cutting parameters on chip formation. As the cutting speed increases, both the cutting force and the sawtooth frequency also increase; conversely, an increase in the feed rate results in a decrease in the sawtooth frequency. The mechanism underlying the formation of serrated chips in tungsten carbide has been investigated. The results showed the serrated chip formation of tungsten carbide to be primarily caused by local thermoplastic instability induced by crack initiation in the main shear zone. Chip formation occurred as a result of the combined effect of adiabatic shear and periodic fracture.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Investigation on the chip formation of high-speed cutting in WC-15Co tungsten carbide with PCD tool

  • 期刊论文

  • 发表日期：

    2025年3月10日

查看全文
  • Yun Xin,
  • Feng Kong,
  • Wei Zhao,
  • Weiqi Shi,
  • Aqib Mashood Khan

摘要

WC-Co tungsten carbide possesses excellent properties, including high hardness, wear resistance, strength, heat resistance and corrosion resistance, which has led to its extensive utilisation in material forming and metal processing. During the tungsten carbide cutting process, serrated chips often appear, and they can affect cutting force, temperature and machining quality. Therefore, understanding the characteristics of serrated chips and controlling their formation as a means of enhancing the machining quality of WC–Co tungsten carbides is essential. In this research investigation, orthogonal cutting experiments and finite element simulations were undertaken in order to acquire the cutting force and chip morphology. Polycrystalline diamond (PCD) cutting tools were used for conducting cutting experiments on WC-15Co tungsten carbide. The cutting speeds were between 70 and 140 m/min, and the feed rates were between 5 and 25 µm/r. The focus of the investigation was on the influence of cutting parameters on chip formation. As the cutting speed increases, both the cutting force and the sawtooth frequency also increase; conversely, an increase in the feed rate results in a decrease in the sawtooth frequency. The mechanism underlying the formation of serrated chips in tungsten carbide has been investigated. The results showed the serrated chip formation of tungsten carbide to be primarily caused by local thermoplastic instability induced by crack initiation in the main shear zone. Chip formation occurred as a result of the combined effect of adiabatic shear and periodic fracture.