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Tool Wear Behavior in Milling of Hardened Custom 465 Steel

  • V. PrasathEmail author
  • V. Krishnaraj
  • J. Kanchana
  • B. Geetha Priyadharshini
Conference paper
Part of the Lecture Notes on Multidisciplinary Industrial Engineering book series (LNMUINEN)

Abstract

With current advancements in hard-milling technology, tool wear and surface integrity have turn out to be a vital attention to improve machining efficiency and the quality of machined components. The aspiration of this current research paper is to examine tool wear and chip morphology when machining hardened Custom 465 (~55HRC) steel with uncoated, commercial TiAlN, and nanolayer silicon nitride coated inserts. The tests were carried out using constant cutting speed of 150 m/min, feed of 0.1 mm/tooth, and depth of cut of 0.3 mm in dry atmosphere. Wear measurements were made with an optical microscope aided by imaging software. Subsequently after each cutting pass, the milling process was clogged; the tool was detached from the tool holder and carried to the optical microscope where the wear of the VBmax flank wear was measured. Likewise, chips were collected and examined during each cutting pass to study its morphology. Flank wear of 0.5 mm was postulated as a denial standard. Wear investigation was executed using an optical microscope for flank and rake faces. Several wear patterns such as abrasion, flank wear, and unwarranted chipping on the tool edge have been studied. The nanolayer silicon nitride coating offers the finest wear resistance in machining and hence responsible for the extended life with carbide inserts.

Keywords

Tool wear Coated inserts Flank wear Wear patterns 

Notes

Acknowledgements

We would like to express our thanks to DRDL, Hyderabad for funding this project (Grant No. 42141/2015). We also acknowledge the faculty members of Center for advanced tooling and precision dies and PSG Institute of Advanced Studies, Coimbatore.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.PSG College of TechnologyCoimbatoreIndia

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