Internal turning of sintered carbide parts: tool wear and surface roughness evaluation

  • Nivaldo Lemos Coppini
  • Anselmo Eduardo Diniz
  • Felipe Soares Lacerda
  • Marcelo Bonandi
  • Elesandro Antonio Baptista
Technical Paper
  • 26 Downloads

Abstract

Turning of sintered carbide parts has not been a common theme in the literature such as the case of other hardened materials. This is a statement made on the basis of recent research on this subject in which journals and conference proceedings were consulted. However, cutting of sintered cemented carbide parts, especially the turning operation, is an important task for a large number of applications where the typical properties of these materials are required. Therefore, the aim of this research was to carry out internal turning experiments in the manufacture of sintered cemented carbide dies used to forge beer cans. The focus of the experiments was to measure and analyze the workpiece surface roughness and wear of cutting edges used in internal turning process. Therefore, samples of sintered cemented carbide WC–Co (12% Co) were submitted to internal turning process with PCD insert tool. Cutting speed and feed rate were used as input variables in the experiments. It was found that, neither very low cutting speeds, nor high feeds can be used to avoid early breakage of the tool. Moreover, for the experiments where no early tool breakage occurred, the increase of feed caused the number of cutting passes prior to the cutting edge breakage to decrease and the workpiece surface roughness to increase. The experiments performed in this work confirm that sintered cemented carbide internal turning, besides being viable, is also feasible to be used to replace grinding operations, at least in terms of surface quality obtained.

Keywords

Hard turning Sintered cemented carbide Surface roughness Tool wear 

Notes

Acknowledgements

The authors are indebted to University of Taubaté and State University of Campinas, Nove de Julho University, and also to Brazilian Research Council (CNPq) for supporting this work.

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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  • Nivaldo Lemos Coppini
    • 1
  • Anselmo Eduardo Diniz
    • 2
  • Felipe Soares Lacerda
    • 3
  • Marcelo Bonandi
    • 3
  • Elesandro Antonio Baptista
    • 3
  1. 1.Universidade de TaubatéTaubatéBrazil
  2. 2.School of Mechanical EngineeringUniversity of CampinasCampinasBrazil
  3. 3.Nove de Julho UniversitySão PauloBrazil

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