The wear mode identyfication of hard materials as means for conccurent estimation of their abrasion resistance and brittle fracture

Ścieszka, S.

Artykuł - szczegóły

Tytuł artykułu

The wear mode identyfication of hard materials as means for conccurent estimation of their abrasion resistance and brittle fracture

Autorzy

Ścieszka S.

Wybrane pełne teksty z tego czasopisma

http://www.polsl.pl/Wydzialy/RG/Wydawnictwa/Strony/KwartalnikRG.aspx

Identyfikatory

Warianty tytułu

Identyfikacja przebiegu zużywania materiałów ceramicznych i węglików spiekanych jako sposób na jednoczesną ocenę ich odporności na zużycie i kruche spiekanie

Języki publikacji

Abstrakty

The fracture toughness is often the major limiting parameter governing the use of hard materials tools. Hence there is a need for research aimed at increasing toughness without sacrificing wear resistance. To aid in this objective, a simple and reliable integrated testing method, in which a conjoin action involving both fracture and abrasion occur, is needed. One such method currently developed is presented in this paper. The method is based on the concept of edge chipping during the initial transition stage of abrasion wear which is controlled by brittle fracture process. The limitation of the method for tougher materials such as tool steel as well as for very brittle materials such as ceramics was also described. Evaluation of the empirical relationship between mass loss as a result of edge chipping during the initial transition stage of abrasive wear and fracture toughness in the form of formulae was calculated and discussed.

Kruche pękanie materiałów używanych na ostrza narzędzi urabiających w wielu przypadkach ich zastosowań jest parametrem kontrolującym trwałość tych narzędzi. Stąd zapotrzebowanie na badania technologiczne, których celem jest zwiększanie ciągliwości ww. materiałów bez jednoczesnego obniżania ich odporności na zużywanie trybologiczne. Dla ułatwienie laboratoryjne weryfikacji efektów powyższych zabiegów technologicznych potrzebna jest prosta, zintegrowana metoda testowania i rankingu materiałów poddawanych oddziaływaniom wywołującym kruche pękanie i zużywanie cierne próbek. Metodę aktualnie opracowaną w Instytucie Mechanizacji Górnictwa przedstawia prezentowany referat. Metoda bazuje na koncepcji, potwierdzonej we wcześniejszych opracowaniach autora, że niszczenie krawędzi próbki we wstępnym etapie jest wywoływane przez proces kruchego pękania. W tym Opracowaniu starano się wyznaczyć granicę stosowalności metody z punktu widzenia kruchości i ciągliwości badanych materiałów. Przedstawiono i przedyskutowano także zależności korelacyjne, będące podstawą do wyliczeń poszukiwanych parametrów materiałowych.

Słowa kluczowe

durability fracture toughness tool wear technological researches

trwałość kruche pękanie zużycie ostrza badania technologiczne

Wydawca

Wydawnictwo Politechniki Śląskiej

Czasopismo

Górnictwo i Geologia

Rocznik

2006

Tom

T. 1, z. 1

Strony

99--124

Opis fizyczny

Bibliogr. 55 poz.

Twórcy

autor

Ścieszka S.

Instytut Mechanizacji Górnictwa, Wydział Górnictwa i Geologii, Politechnika Śląska, stanislaw.scieszka@polsl.pl

Bibliografia

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Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-article-BSL8-0032-0021