한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)
- 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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- Pages.215-216
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- 2002
THE INFLUENCE OF AFFECTED LAYER OF EDM ON THE WEAR CHARACTERISTICS OF CEMENTED TUNGSTEN CARBIDE
- Ishikawa, K. (Graduate Student, Graduate School of Iwate University) ;
- Iwabushi, A. (Department of Mechanical Engineering, Iwate University) ;
- Shimizu, T. (Department of Mechanical Engineering, Iwate University)
- 발행 : 2002.10.21
초록
This paper describes the wear characteristics of WC-Co cemented carbides machined with Wire-cut or Die-sinking EOM. We prepared the specimens with different grades of grinding to remove the affected layer after the EDM. These specimens were experimented by block-on-cylinder type tribometer. The result indicated that although the hardness of the affected layer was lower than that of the bulk, wear resistance was increased. In order to investigate the cause of the increase in wear resistance of the affected layer, the layer was observed and analyzed by SEM and ESCA. We also discussed the mean free path of Co phase.