Journal of the Korean Society for Heat Treatment (열처리공학회지)
- Volume 13 Issue 1
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- Pages.21-26
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- 2000
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- 1225-1070(pISSN)
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- 2508-4046(eISSN)
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.) ;
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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.)
- Received : 1999.10.11
- Published : 2000.01.30
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.
Keywords
- Fatigue strength;
- Spur gears;
- Heat-treatment;
- Carburization;
- Direct quenching;
- Reheat quenching;
- s-n curves;
- Estimated strength