Journal ArticleDOI
The role of hard coatings in carbide milling tools
TLDR
In this article, the effect of hard coatings on the cutting edge of a fly-cutter was examined under a nominal range of cutting conditions and optical and electron microscopy showed both thermal fatigue-induced vertical cracks and lateral cracks parallel to the edge.Abstract:
The role of hard coatings in prolonging the life of cemented carbide tools is now well‐documented for continuous turning applications. In contrast, relatively few studies have elucidated the effect of such coatings in milling, where both mechanical and thermal cyclic loading impose special requirements on the tool cutting edge. This investigation describes the wear mechanisms observed in coated carbide milling tools which have been the object of recent commercial tool development. Coated carbide tools (by CVD and PVD) of varying cutting edge geometry, substrate, and coating composition were subjected to fly‐cutter milling tests under a nominal range of cutting conditions. Examination of the used cutting edges under optical and electron microscopy showed both thermal‐fatigue‐induced vertical cracks, perpendicular to the cutting edge, as well as lateral cracks parallel to the edge which result from mechanical cyclic stresses. The wear patterns and the sequential progression of these cracks were characterize...read more
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Journal ArticleDOI
Performance of PVD TiN, TiCN, and TiAlN coated cemented carbide tools in turning
TL;DR: In this article, PVD TiN, TiCN, and high-ionization sputtered PVDTiAlN coatings were deposited on WC-6wt%Co hardmetal inserts.
Journal ArticleDOI
Review of CVD TiN coatings for wear-resistant applications: deposition processes, properties and performance*
Helen E. Rebenne,Deepak G. Bhat +1 more
TL;DR: In this paper, the authors present a history of developments in the technology of CVD TiN coatings, including the CVD processes and equipment, and the current knowledge on the thermodynamics and kinetics of the deposition process is presented.
Journal ArticleDOI
Architecture of PVD coatings for metalcutting applications: A review
TL;DR: In this paper, the authors present PVD coatings that are specially designed to protect the cutting tool and extend its functionality (lifetime) and discuss the key PVD architectures employed to protect a tool: monolithic, multilayer and nanostructured coatings.
Patent
Binder enriched cvd and pvd coated cutting tool
Anakkavur T. Santhanam,Rajendra V. Godse,George P. Grab,Dennis T. Quinto,Kenneth E. Undercoffer,Prem C. Jindal +5 more
TL;DR: In this article, a cutting tool with at least one chemical vapor deposited (CVP) layer and one physical vapor deposited layer (PVD) is considered. But the PVD layer contains residual compressive stresses.
Journal ArticleDOI
Raman spectroscopy as a tool to study cubic Ti–C–N CVD coatings
TL;DR: In this article, a series of CVD TiC1−−xNx coatings has been deposited on cemented carbide and laser Raman spectroscopy was used to investigate the coatings, since it has been shown to be very sensitive technique regarding composition differences.