Performance assessment of pCBN and bCBN tools in machining of high-chromium white cast iron

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• 作者：Ling Chen ; Jinming Zhou ; Volodymyr Bushlya…
• 关键词：CBN ; Machinability ; Machining ; Tool wear ; White cast iron
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：79
• 期：1-4
• 页码：635-644
• 全文大小：2,020 KB
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• 作者单位：Ling Chen (1)
  Jinming Zhou (1)
  Volodymyr Bushlya (1)
  Oleksandr Gutnichenko (1)
  Jan-Eric Stahl (1)
  
  1. Division of Production and Materials Engineering, Lund University, 221 00, Lund, Sweden
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

This paper presents an experimental evaluation of the performance of cubic boron nitride (CBN) tools in the machining of high-chromium white cast iron. Two types of CBN tool materials were evaluated in the tests, including polycrystalline cubic boron nitride (pCBN) and binder-less crystalline cubic boron nitride (bCBN). Performance in terms of the levels of cutting forces, tool wear, surface roughness and process stability was evaluated during and after cutting tests. The work materials used in the cutting tests included two groups with chemical compositions of two levels of carbon silicon (lower C-Si and higher C-Si) in as-cast and hardened states, respectively. Test results indicate that the cutting tool materials clearly exhibited different behaviour in the machining of high-chromium white cast iron. The pCBN tools demonstrated lower tool wear rates than the bCBN tools but had higher roughness levels on the workpiece surfaces. The cutting tools also behaved differently according to the different levels of C-Si content and heat treatment of the work materials. In addition, the study reveals the mechanism of the interactions between CBN tools and high-chromium white cast iron under a range of machining parameters.