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Failure of tools for metallic powder compaction

✍ Scribed by M. Torkar; V. Leskovšek; B. Šuštaršič; P. Panjan

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
657 KB
Volume
9
Category
Article
ISSN
1350-6307

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✦ Synopsis

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.

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