대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제26권6호
  • /
  • Pages.1120-1126
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  • 2002
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  • 1226-4873(pISSN)
  • /
  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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ESC 공정으로 제작된 금형강의 가공특성연구

Machining Characteristics of Tool Steels Manufactured by Electro Slag Casting Process

  • 김정운 (부산대학교 정밀정형 금형가공 연구센터) ;
  • 김봉준 (부산대학교 정밀기계공학과/정밀정형 금형가공 연구센터) ;
  • 이득우 (부산대학교 정밀기계공학과/정밀정형 금형가공 연구센터) ;
  • 문영훈 (부산대학교 정밀기계공학과/정밀정형 금형가공 연구센터)
  • 발행 : 2002.06.01
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초록

Machining characteristics of tool steels manufactured by electro slag casting process has been investigated in this study. For the estimation of machinability, turning and drilling tests are carried out. The chip shapes at various velocities are investigated for the comparison of turning workabilities of tool steels because the chip shapes reflect characteristics of cutting resistance. In case of drilling test, feed motor currents measured by a hall sensor are used as a measure for the drilling resistance. The machining characteristics of the tool steels are strongly correlated with tensile properties, such as tensile strength, hardness, and ductility. In case of turning workability, it was found to be favoured by the higher tensile strength, while the opposite is true far the drilling workability. The electro-slag casted materials show better turning workability in the viewpoint of chip shapes and, the quenching-tempered electro-slag casted material has relatively better drilling machinability than that of the annealed one.

키워드

참고문헌

  1. Paton, B. E., Medovar, B. I. and Boiko, G. A., 1981, Electroslag Casting, Kiev, Naukova Dumka Publ
  2. Baligidad, R. G., Prakash, U. and Krishna, A. R., 1998, 'Effect of Carbon Addition on Structure and Mechanical Properties of Electro Slag Remelted Fe-20wt.% AI Alloy,' Material Science and Engineering A249, pp. 97-102 https://doi.org/10.1016/S0921-5093(98)00580-2
  3. Kim, C. Y., Kang, C. S., 1982, 'A Study on the Melting Parameter in Electro Slag Casting Process, ' Journal of the Korean Institute of Metals, Vol. 20, No. 12, Dec
  4. Chae, W. S., Kim, K. W. and Kim, D. H., 1997, 'Turning and Metallic Characterization for CAM Shaft Materials of Diessel Engine,' JKSPE, Vol. 14, No.7
  5. 허성중, 1997, '난삭재의 초정밀·고능률 연삭 가공을 위한 다이아몬드숫돌의 개발,' 대한기계학회논문집A, 제21권, 제12호, pp. 2172-2178
  6. 백대균, 고태조, 김희술, 1996, '표면조도 모델을 이용한 정면밀링에서의 최적 이송속도 선정,' 대한기계학회논문집A, 제20권, 8호, pp. 2508-2515
  7. 김남훈, 이용성, 1996, 'SM45C와 SCM440의 피삭성 검토에 관한 연구,' 대한기계학회논문집A, 제20권, 12호, pp.3899-3908
  8. Sim, G. J., Cheong, C. Y., Oh, S. H. and Seo, N. S., 1995, 'A Study on the Classification and Prediction of the Chip Type under the Specified Cutting Conditions in Turning,' JKSPE, Vol. 12, No.8
  9. Fei, J. and Jawahir, I. S., 1994, 'A New Approach for Chip-Form Characterization in Metal Machining,' Processing of the First S. M WU Symposium on Manufacturing Science, pp. 11 - 17