Improving the Efficiency of Carbide End Mills by Deposition of Nano-Scale Multi-Layered Composition Coatings

Abstract:

The study has considered the challenge of improving the efficiency of carbide end mills through modification of the physical and mechanical properties of tool by forming on its working surfaces nanostructured multi-layered composite coatings with use of filtered cathodic vacuum arc deposition (FCVAD). The technique of deposition of three-component multi-layered composite coatings with nanosized grain structure and thickness of sublayers on working surfaces of end mills has been developed. The developed coatings contain three key components, each of which has a strictly functional purpose specifying enhanced wear resistance, strong adhesive bonding with tool material and barrier properties with regard to heat flows and diffusion, and that allows improving the efficiency of carbide end mills. The study has found out that when carbide end mills with developed coatings are used at cutting, the cyclic thermomechanical stresses acting on the cutting part of the tool during the cutting stroke and idle run of cutting edge of end mills are smoothed, and that leads to the decrease in the rate of tool wear and improves the efficiency of carbide end mills. The study was supported by grant No. 9.251.2014/K, project code 251.

• Periodical: Applied Mechanics and Materials (Volume 684)
• Pages: 264-270
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.684.264
• Online since: October 2014
• Authors: A.A. Vereschaka*, B.Y. Mokritskii, D.A. Pustovalov, A.S. Vereschaka, Jury I. Bublikov, Gaik V. Oganyan
• Keywords: Carbide End Mills, Efficiency, Nanostructured Multi-Layered Composite Coatings, Wear Resistance

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