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首页> 美国政府科技报告 >Prediction and Control of Heat Treat Distortion of Helicopter Gears
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Prediction and Control of Heat Treat Distortion of Helicopter Gears

机译：直升机齿轮热处理变形的预测与控制

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A helicopter gear heat treatment distortion modelling approach was developedusing a commercially available finite element program. The model. predicts distortion and residual stresses resulting from carburization, harden/quench and temper processes performed on gears fabricated from 9310 steel. Accurate prediction of heat treatment distortion could aid in the design of gears, heat treatment processes and quench dies to reduce distortion. This would result in a significant reduction in scrap and rework for new gear designs. The model development included the development of constitutive equations, gathering of materials property data and determination of heat transfer coefficients. The model was demonstrated on a simple flat disk geometry and a rim/web/accessory gear blank. Model results are compared to experimental heat treatments of these configurations.

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