On Measurement and Interpretation of Toughness Behaviour of Carbide Tools

H.J.J. Kals

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4 Citations (Scopus)
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The actual significance of any definition of toughness behaviour of carbide tools depends on the existence of an interrelation between the quality as defined and the occurrence of chipping and premature failure in cutting. While at present there is no adequate analysis available and the existing classifications do not even provide a qualitative indication for tool choice, one first has to evaluate the behaviour of cemented carbides for simplified load conditions. Where fracture and chipping is a mechanical phenomenon, in the case of tools assisted or even dominated by thermo-mechanical effects, a logical first step for the evaluation of carbide grades would seem to determine the property profile of carbide tools in terms of toughness and resistance to thermal shock, but in such a way that a qualitative interpretation of the cutting conditions can be taken into account. This article deals with a tentative approach for the evaluation of toughness performance of throw-away carbide inserts with the aid of a four point bending test and the diagonal compression test, the latter also being used for measuring the relative resistance to thermal shock.
Original languageUndefined
Pages (from-to)37-42
JournalCIRP annals : manufacturing technology
Issue number1
Publication statusPublished - 1981


  • IR-68758

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