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Micro-blasting of PVD Films, an Effective Way to Increase the Cutting Performance of Coated Cemented Carbide Tools |
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| Authors: | K.-D. Bouzakis I. Mirisidis N. Michailidis G. Erkens |
| Affiliation: | a Laboratory for Machine Tools and Manufacturing Engineering, Aristoteles University of Thessaloniki, Greece b Scanning Electron Microscope Laboratory, Aristoteles University of Thessaloniki, Greece c CemeCon AG, Wurselen, Germany |
| Abstract: | This paper investigates the feasibility of increasing the wear resistance of cemented carbide tools through micro-blasting of their PVD-coatings. The enhanced and graded film strength properties before and after micro-blasting are determined by means of a FEM-based evaluation of nanoindentation results. The coating topomorphy, induced by micro-blasting, was monitored and correlated to the substrate roughness and film adhesion. The cutting performance of inserts, coated with micro-blasted films, was investigated in milling and explained with the aid of a cutting process FEM simulation. The obtained results reveal a tool life growth through micro-blasting of coatings, deposited on substrates with appropriate roughness characteristics. |
| Keywords: | PVD Cutting Micro-blasting |
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