CAJ | 학술논문

基于COMSOL Multi-Physics软件采用三维电磁-热耦合数值模型对钢轨中频感应正火加热过程进行了数值模拟，并研究了电流，频率和感应加热器与钢轨之间间隙对钢轨最终温度场的影响规律。模拟结果显示，钢轨轨脚温度上升最快，轨腰温度上升最慢，轨头温度会在某一时刻超过轨脚达到最高。随着感应器电流密度增加和电流频率的增大，钢轨升温速度不断升高；随感应器与钢轨间的间隙的加大，钢轨升温速度降低。
기우COMSOL Multi-Physics연건채용삼유전자-열우합수치모형대강궤중빈감응정화가열과정진행료수치모의，병연구료전류，빈솔화감응가열기여강궤지간간극대강궤최종온도장적영향규률。모의결과현시，강궤궤각온도상승최쾌，궤요온도상승최만，궤두온도회재모일시각초과궤각체도최고。수착감응기전류밀도증가화전류빈솔적증대，강궤승온속도불단승고；수감응기여강궤간적간극적가대，강궤승온속도강저。
Medium-frequency induction normalizing process of rail was numerical simulated by using three-dimensional electromagnetic-thermal coupling numerical model, based on COMSOL multi-physics. Effects of current, frequency and the gap between the induction heater and rail on final temperature field of the rail were researched. The simulation results show that the temperature of rail-foot rises very fastly, the temperature of rail-waist rises most slowly, the temperature of rail-head would exceed the temperature of rail-foot to reach the top temperature at a certain moment. With the increase of inductor-current density and the current-frequency, the heating rate of the rail increases;while with the increase of the gap between inductor and the rail,the heating rate decreases.