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

The Korean Society of Mechanical Engineers (대한기계학회)
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Machining Characteristics of Tool Steels Manufactured by Electro Slag Casting Process

ESC 공정으로 제작된 금형강의 가공특성연구

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

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.

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References

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