Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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A Study on the Effect of Heat-treatment on the Fatigue Strength of SNC815 Spur Gears

SNC815 기어의 피로강도에 미치는 열처리 효과에 관한 연구

  • Lyu, Sung-Ki (School of Transport Vehicle Eng., Res. Center for Aircraft Parts Tech. Gyeongsang Univ.) ;
  • Nam, Tae-Hyun (Division of Materials Science and Eng. Res. Center for Aircraft Parts Tech. Gyeongsang Univ.) ;
  • Lee, Jin-Yi (Dept. of Mechanical Eng. Saitama Univ.)
  • 류성기 (경상대학교 수송기계공학부, 항공기부품기술연구센터) ;
  • 남태현 (경상대학교 재료공학부, 항공기부품기술연구센터) ;
  • 이진이 (사이타마대학 기계공학과)
  • Received : 1999.10.11
  • Published : 2000.01.30
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Abstract

This study deals with effects of heat-treatment on the fatigue strength of SNC815 spur gears. The test gears are heat-treated by two different treatments. After carburization, one group of the test gears is quenched directly, while the other group is fumace cooled, reheated then quenched. The fatigue test at a constant stress amplitude is performed by using an electrohydraulic servo-controlled pulsating tester. The S-N curves are obtained and illustrated. By comparing the estimated strength with the experimental results, the validity of the previous experimental formula, presented by the author for estimating the fatigue strength of carburized gears, was discussed on these tested gears.

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