Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effect of Changes in Metal Characteristics of Hot-Forged Alloy Steel on Mechanical Properties of an Automotive Automatic Transmission Gear

자동차 자동변속기 기어용 합금강의 열간 단조 성형에 따른 기계적 특성 변화에 관한 연구

  • Received : 2016.04.04
  • Accepted : 2016.06.07
  • Published : 2016.06.30
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Abstract

This study investigated the effect of the changes in metal characteristics due to the hot forging on SCR420HB applied to ensure the optimal production of the hot-forging ratio on the mechanical properties of an automotive automatic transmission gear. The microstructural changes in the forging ratio were investigated by adjusting the forging range into multiple ranges from alloy steel. This was done in order to set the optimum forging range given the manufacturing process conditions during the hot forging of alloy steel parts with a carbon content of more than 0.8% wt. The effects of the content change in the microstructure on the mechanical properties due to the use of the part were examined.

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References

  1. Zhang, S. L., Sun, X. J., and Dong, H., "Effect of deformation on the evolution of spheroidization for the ultra high carbon steel", Materials Science and Engineering A, Vol. 432, No. 1, pp. 324-332, 2006. https://doi.org/10.1016/j.msea.2006.06.057
  2. Sunada, H., Wadsworth, J., Lim, J., and Sherby, O. D., "Mechanical properties and microstructure of heat-treated ultrahigh carbon steels", Materials Science and Engineering A, Vol. 38, pp. 35-40, 1979. https://doi.org/10.1016/0025-5416(79)90029-6
  3. Sherby, O. D., Oyama, T., Kum, D. W., Walser, B., and Wadsworth, J., "Ultrahigh Carbon Steels", JOM Journal of the Minerals, Metals and Materials Society, Vol. 37, pp. 50, 1985.
  4. Dudra, S. P. and Im, Y. T., "Investigation of metal flow in open-die forging with different die and billet geometries" Journal of Materials Processing Technology, Vol. 21, pp. 143-154, 1990. https://doi.org/10.1016/0924-0136(90)90003-D
  5. Dudra, S. P., Im, Y. T., "Analysis of void closure in open-die forging", International Journal of Machine Tools and Manufacture, Vol. 30, No. 1, pp. 65-75, 1990. https://doi.org/10.1016/0890-6955(90)90042-H
  6. Kiefer, B. V. and Shah, K. N., "Three dimensional simulation of open-die press forging" Journal of Engineering Materials and Technology, Vol. 112, pp. 477-485, 1990. https://doi.org/10.1115/1.2903360
  7. Erman, E., Medei, N. M., Roesch, A. R., and Shah, D. C., "Physical modeling of blocking processes in open-die press forging", Journal of Mechanical Working Technology, Vol. 19, pp. 165-194, 1989. https://doi.org/10.1016/0378-3804(89)90003-X
  8. Erman, E., Medei, N. M., Roesch, A. R. and Shah, D. C., "Physical modeling of blocking processes in open die press forging", Journal of Mechanical Working Technology, Vol. 19, pp. 165-194, 1989. https://doi.org/10.1016/0378-3804(89)90003-X
  9. Cho, J. R., Bae, W. B., Kim, Y. H., Choi, S. S. and Kim, D. K., "Analysis of the cogging process for heavy ingots by finite element method and physical modelling method", Journal of Materials Processing Technology, Vol. 161, pp. 80-81, 1998.
  10. Wadsworth, J. and Sherby O. D., "Influence of chromium on superplasticity in ultra-high carbon steels" Journal of Materials Science, Vol. 13, pp. 2645-2649, 1978. https://doi.org/10.1007/BF02402751

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