Articles

Comparative investigation towards machinability improvement in hard turning using coated and uncoated carbide inserts: part I experimental investigation

  • Ramanuj Kumar ,
  • Ashok Kumar Sahoo ,
  • Purna Chandra Mishra ,
  • Rabin Kumar Das
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  • School of Mechanical Engineering, Kalinga Institute of Industrial Technology, Deemed to be University, Bhubaneswar, Odisha 751024, India

Received date: 2017-03-23

  Revised date: 2018-01-18

  Online published: 2018-03-25

Supported by

his research was supported by the All India Council for Technical Education, New Delhi, India, under the research promotion scheme (RPS) project vide Ref No:8-154/RIFD/RPS/POLICY-4/2013-14. The authors express their gratitude and thanks to the AICTE for granting the financial support to carry out this research.

Abstract

The investigation of low cost uncoated and coated carbide insert in the hard turning of hardened AISI D2 steel (≥55 HRC) will definitely open up a new arena as an economical alternative suitable to industrial machining sectors. Thus, this paper reports the comparative machinability assessment for the hard turning of AISI D2 steel ((55 ±1) HRC) by coated and uncoated carbide insert in a dry environment. Micro hardness and abrasion tests were carried out to assess resistance capability against wear. The above test results confirmed the greater wear resistance ability of Al2O3 coated carbide insert over uncoated carbide. Based on the extensive investigation of comparative machinability, the coated carbide insert (TiN-TiCN-Al2O3) outperformed the uncoated carbide insert with regard to surface roughness, flank wear, chip-tool interface temperature, and chip morphology. Abrasion and diffusion were observed as the principal tool wear mechanisms in the investigated range. The uncoated carbide failed completely due to the severe chipping and quick dulling of the cutting edge, which led to its unsuitability for machining hardened steel.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-018-0215-z

Cite this article

Ramanuj Kumar , Ashok Kumar Sahoo , Purna Chandra Mishra , Rabin Kumar Das . Comparative investigation towards machinability improvement in hard turning using coated and uncoated carbide inserts: part I experimental investigation[J]. Advances in Manufacturing, 2018 , 6(1) : 52 -70 . DOI: 10.1007/s40436-018-0215-z

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