Numerical Simulation and Analysis of Heat ...

While large-scale steel gate railway is subjected to huge wheel pressure, its surface will be under tremendous local contacting stress. As an important process in the railway manufacturing process, heat treatment can enhance the external strength and hardness as well as the internal toughness. Utilizing the high pressure gate in three gorges dam as engineering background, With infinite element method, the temperature field through quenching process is simulated. With the mathematical model based on TTT curve, through programming on ANSYS software, the metallurgical structure field and hardness distributions are obtained. Thereby the relationship between heat treatment processing parameters and the material mechanical proprieties is established. These results suggest that the redesigned heat treatment process can meet the application requirements, and are valuable for guiding the optimization of railway heat treatment process.