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Torkar, M.; Leskovšek, V.; Šuštaršič, B.; Panjan, P.
Engineering failure analysis, 04/2002, Letnik: 9, Številka: 2Journal Article
Surfacing with single- or multilayer hard coatings represents a modern trend in the prolongation of tool lifetime. The tools for metal powder compaction were vacuum heat treated, pulsed plasma ion nitrided and coated with TiN or CrN by PVD. Industrial tests of tools, during normal production, showed that, after the same hard coating process, the lifetime of some tools was prolonged by at least twice, but some tools failed very quickly. Research showed that the main reason for early tool wear or failure was improper diameter of the tools after coating.
