Numerical simulation of temperature uniformity of hub bearing inner ring during induction tempering process

doi:10.13251/j.issn.0254-6051.2023.05.021

Abstract

Abstract: Coupling calculation simulation model of electromagnetic field and temperature field was used to study the influence of induction heating process parameters on tempering temperature field of inner ring of the special-shaped automobile wheel hub bearing, and the interaction of the induction tempering process parameters was analyzed by using the response surface methodology. The results show that as the frequency and current density of the induction coil decrease, the temperature difference between the core and the surface of the bearing inner ring decreases, and the overall heating rate decreases. According to the significance of the influence on temperature difference and heating rate, the order of induction heating process parameters is current density, frequency, and air gap. Induction tempering process parameters with better temperature uniformity obtained based on response surface method are the frequency of 10 kHz, the current density of 19.6×10⁶ A/m², the air gap between the outer induction coil and the parts of 8.5 mm, and the effectiveness of temperature field numerical simulation is verified through experiments. With equivalent tempering parameters, isothermal tempering and induction tempering experiments find that the hardness obtained by the two processes is similar.

Key words: automobile hub bearing, induction tempering, temperature uniformity, numerical simulation, response surface methodology

CLC Number:

GT161

Wei Wenting, Zhao Tianyi, Ke Jinzhe, Liu Qinglong. Numerical simulation of temperature uniformity of hub bearing inner ring during induction tempering process[J]. Heat Treatment of Metals, 2023, 48(5): 129-137.

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