Specific Grinding Energy Causing Thermal Damage in Helicopter Gear Steel

Thermal damage (burn) in carburized and hardened helicopter gear steel caused by grinding was investigated. Excessive grinding temperatures cause grinding burn and result in excessive scrap or reduced fatigue life. Vasco X2M gear steel, used in helicopters, was prepared and heat-treated by a researc...

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Bibliographic Details
Published in:Journal of manufacturing processes 2002, Vol.4 (2), p.142-147
Main Authors: Mayer, John E., Price, Angie H., Purushothaman, Ganesh K., Dhayalan, Arun Kumar, Pepi, Marc S.
Format: Article
Language:English
Subjects:
Applied sciences
Armed forces
Cutting
Drives
Energy
Etching
Exact sciences and technology
Gear Steels
Gears
Grinding
Heat
Helicopters
Investigations
Laboratories
Mathematical models
Mechanical engineering. Machine design
Metals. Metallurgy
Production methods
Production techniques
Steel
Steel products
Studies
Temperature
Thermal Damage
Thermal energy
Velocity
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Summary:Thermal damage (burn) in carburized and hardened helicopter gear steel caused by grinding was investigated. Excessive grinding temperatures cause grinding burn and result in excessive scrap or reduced fatigue life. Vasco X2M gear steel, used in helicopters, was prepared and heat-treated by a research partner, U.S Army. Grinding tests were conducted on this steel. Nital etching was used to detect grinding burn. Model was established to predict onset of thermal damage for Vasco X2M steel based on specific grinding energy determined from grinding force measurements. The model was compared to results published for other steels. A control strategy is suggested based on the model to avoid grinding burn.
ISSN:1526-6125
2212-4616
DOI:10.1016/S1526-6125(02)70140-0