A. L. Banka, Airflow Sciences Corporation, Livonia, MI; Z. Li, Deformation Control Technology, Inc., Cleveland, OH; M. Aronov, IQ Technologies, Inc., Akron, OH
Transient CFD analyses using FLUENT are applied to the intensive quenching process to characterize the water flow and thermal boundary conditions around a spur gear made of carburized Pyrowear 53. The transient heat transfer coefficients predicted from CFD models vary locally on the gear surfaces. These are imported into heat treatment simulations using DANTE to predict the gear response, including hardness, phase transformation, stress, and distortion. The relations between temperature field, phase transformation, internal stress, and distortion during quenching are explained using the model history results. The combination of FLUENT and DANTE models provides efficient and effective solutions to the quenching fixture design and determination of the necessary water flow volume and velocity. The predicted gear distortion and residual stresses are validated from experiments.
Summary: Transient CFD analyses using FLUENT are applied to the intensive quenching process to characterize the water flow and thermal boundary conditions around a spur gear made of carburized Pyrowear 53. The transient heat transfer coefficients predicted from CFD models vary locally on the gear surfaces. These are imported into heat treatment simulations using DANTE to predict the gear response, including hardness, phase transformation, stress, and distortion. The relations between temperature field, phase transformation, internal stress, and distortion during quenching are explained using the model history results. The combination of FLUENT and DANTE models provides efficient and effective solutions to the quenching fixture design and determination of the necessary water flow volume and velocity. The predicted gear distortion and residual stresses are validated from experiments.
