GSD-16 IMPACT BENDING FATIGUE STRENGTH OF INDUCTION HARDENED GEARS MADE FROM CARBON AND ALLOY STEELS IN COMPARISON WITH CARBURIZED OR NITRIDED GEARS(GEAR STRENGTH AND DURABILITY)

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概要

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• Surface durability of gear teeth can be increased by increasing the hardness of the gears. However, when the hardness is increased beyond a certain limit (about 500 Vickers Hardness), the bending fatigue strength of teeth decreases with an increase in the hardness in the case of through hardened gears. It is generally believed that the reduction in the bending fatigue strength of teeth can be prevented by introducing case-hardening. In the present investigation, the test gears were casehardened by three different methods. As for the gear materials, plain carbon and alloy steels including high tension steel were used. The gears were hardened by carburizing, plasma nitriding and induction hardening. Specifications of test gears are module m=3, number of teeth Z=26 and face width b=10 mm. In contrary to general expectation, the impact bending fatigue lives of the induction hardened gears were longer than those of carburized or nitrided gears, in almost all cases. In some cases, plasma nitrided gears were stronger than carburized gears. The effective utilization of the induction hardened gears were discussed using measured bending fatigue lives and the hardness of the teeth of the hardened gears.

• 一般社団法人日本機械学会の論文
• 2001-11-15

著者

• Maenosono Koji

  Kyushu Institute Of Technology

• Sonoda Keiji

  Sojo University

• SUGIMOTO Takeji

  Kurume Institute of Technology

• ISHIBASHI Akira

  Sojo University, Department of Mechanical Engineering

• Ishibashi Akira

  Sojo University Department Of Mechanical Engineering

関連論文

• GSD-16 IMPACT BENDING FATIGUE STRENGTH OF INDUCTION HARDENED GEARS MADE FROM CARBON AND ALLOY STEELS IN COMPARISON WITH CARBURIZED OR NITRIDED GEARS(GEAR STRENGTH AND DURABILITY)

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