본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

KSME international journal v.18 no.5, 2004년, pp.770 - 779   피인용횟수: 3

Micro Cutting of Tungsten Carbides with SEM Direct Observation Method

jung, Heo-Sung   (Department of Mechanical Engineering, Doowon Technical CollegeUU0000519  );
  • 초록

    This paper describes the micro cutting of wear resistant tungsten carbides using PCD (Poly-Crystalline Diamond) cutting tools in performance with SEM (Scanning Electron Microscope) direct observation method. Turning experiments were also carried out on this alloy (V50) using a PCD cutting tool. One of the purposes of this study is to describe clearly the cutting mechanism of tungsten carbides and the behavior of WC particles in the deformation zone in orthogonal micro cutting. Other purposes are to achieve a systematic understanding of machining characteristics and the effects of machining parameters on cutting force, machined surface and tool wear rates by the outer turning of this alloy carried out using the PCD cutting tool during these various cutting conditions. A summary of the results are as follows: (1) From the SEM direct observation in cutting the tungsten carbide, WC particles are broken and come into contact with the tool edge directly. This causes tool wear in which portions scrape the tool in a strong manner. (2) There are two chip formation types. One is where the shear angle is comparatively small and the crack of the shear plane becomes wide. The other is a type where the shear angle is above 45 degrees and the crack of the shear plane does not widen. These differences are caused by the stress condition which gives rise to the friction at the shear plane. (3) The thrust cutting forces tend to increase more rapidly than the principal forces, as the depth of cut and the cutting speed are increased preferably in the orthogonal micro cutting. (4) The tool wear on the flank face was larger than that on the rake face in the orthogonal micro cutting. (5) Three components of cutting force in the conventional turning experiments were different in balance from ordinary cutting such as the cutting of steel or cast iron. Those expressed a large value of thrust force, principal force, and feed force. (6) From the viewpoint of high efficient cutting found within this research, a proper cutting speed was 15 m/min and a proper feed rate was 0.1 mm/rev. In this case, it was found that the tool life of a PCD tool was limited to a distance of approximately 230 m. (7) When the depth of cut was 0.1 mm, there was no influence of the feed rate on the feed force. The feed force tended to decrease, as the cutting distance was long, because the tool was worn and the tool edge retreated. (8) The main tool wear of a PCD tool in this research was due to the flank wear within the maximum value of $V_{max}$ being about 260 $\mu\textrm{m}$ .


  • 주제어

    PCD Cutting Tools .   WC-Co .   SEM (Scanning Electron Microscope) .   Micro Cutting .   Direct Observation Method .   Tool Wear .   Cutting Force .   Machined Surface.  

  • 참고문헌 (10)

    1. Technical Research Institute, 1997, Machining Data Files (Edited by Japan society for the Promotion of Machine Industry), Tokyo, 95-0325 
    2. Technical Research Institute, 1997, Machining Data Files (Edited by Japan society for the Promotion of Machine Industry), Tokyo, 92-0298 
    3. Hanasaki, S., Fujiwara, J.and Miyamoto, T., 1996, 'Measurement of strain rate nea cutting edge by image processing on micro cutting commercially pure aluminum in SEM,' Journal of Japan Institute of Light Metals, Vol. 46, No. 4, pp. 177-182 
    4. Heo, S. J., Kang, J. H.and Kim, W. I., 1993, 'A Study on the High Efficiency Grinding of WC-Co,' KSME (A), Vol. 17, No. 3, pp. 721-730 
    5. Heo, S. J., Kang, J. H. and Kim, W. I., 1993, 'A Study on the Grinding of WC-Co with High Quality,' The 1st ICPMT International Conference 
    6. Technical Research Institute, 1997, Machining Data Files (Edited by Japan society for the Promotion of Machine Industry), Tokyo, 95-0321 
    7. Technical Research Institute, 1997, Machining Data Files (Edited by Japan society for the Promotion of Machine Industry), Tokyo, 95-0323 
    8. Hamasaki. S., Touge, M., Miyamoto, T. and Fujiwara, J., 1990, 'Study on cutting mechanism of fiber reinforced metals (1st Report)', Japan Society of Precision Engineering, Vol. 56, No. 12, pp. 2225-2230 
    9. Hanasaki, S., Touge, M., Tanokubo, E. and Hasegawa, Y., 1989, 'In situ observation of micro cutting of Al-Si alloy by using scanning electron microscope,' Journal of Japan Institute of Light Metals, Vol. 39, No. 10, pp. 705-709 
    10. Hanasaki, S., Touge, M. and Tsukuda, I., 1989, 'Study on cutting of Al-Si alloys,' Japan Society of Precision Engineering, Vol. 55, No. 06, pp. 1091-1096 
  • 이 논문을 인용한 문헌 (3)

    1. 2008. "" Journal of mechanical science and technology, 22(2): 293~299     
    2. 2008. "" Journal of mechanical science and technology, 22(7): 1383~1390     
    3. 2009. "" Journal of mechanical science and technology, 23(7): 1959~1966     

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • NDSL :
유료다운로드

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기