Load-Carrying Capacity of Austempered Ductile Iron ADI) Gears. (Surface Durability of Fine Particle Shot-Peened ADI Gear.

Ishimaru, Ryohei; Ariura, Yasutsune; Yoshioka, Koichi; Goka, Masahito

doi:10.1299/kikaic.68.1855

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…Roughness is slightly increased by FPB. The surface roughness after conventional shot peening is 9 to 15 µmRy, which is worse than the case of FPB (15) . Photographs of the tooth surface of A, FPB1 and FPB2 are shown in Fig.…”

Section: Roughnessmentioning

confidence: 76%

“…It starts to vary widely and the inclination of the slope in the S-N curve becomes small. Ishimaru showed that the strength of the ADI gear was improved by 20% by FPB in an experiment using a power-circulation-type fatigue tester (15) . Oda showed that the strength of the ADI gear was improved by 20-50% by conventional shot peening by performing the same pulsating fatigue test as that used in this study (8) .…”

Section: Journal Of Advanced Mechanical Design Systems and Manufactmentioning

confidence: 99%

“…The surface roughness may increase by shot peening, but the adverse effect was not evaluated in these reports. Moreover, many studies have been carried out on the surface durability of ADI gears (10)~ (15) .…”

Section: Introductionmentioning

confidence: 99%

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Bending Fatigue Strength of Austempered Ductile Iron Spur Gears

Yamanaka

Tamura

Inoue

et al. 2009

JAMDSM

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This paper deals with an experimental evaluation of bending fatigue strength for austempered ductile iron (ADI) spur gears. The module is 2.5 and the number of teeth is 26 in the test gears. The material of the test gears corresponds to Japan Industrial Standard (JIS) FCAD1100-15. Some gears are processed by one of two types of fine particle bombarding (FPB). The surface roughness is slightly increased by FPB. The obtained strengths are 623 MPa for the as-austempered gears, and 1011 and 1085 MPa for the gears after FPB. The strength is expressed by the fillet stress level, which is calculated by FEM. The strength of a gear with the same dimensions made of carburized SCr420H alloy steel is 1205 MPa, and the strength of the ADI gear is approximately half that of the carburized steel gear. The FPB process has a significant effect on the ADI gear, improving its strength by 62-74%.

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Section: Roughnessmentioning

confidence: 76%

Section: Journal Of Advanced Mechanical Design Systems and Manufactmentioning

confidence: 99%