Axisymmetric Forging Quenching Process Temperature Field And The Organization Numerical Simulation

Computers are widely used in the field of heat treatment. The numerical simulation and calculation of temperature and microstructure distribution during quenching process to large forging are significant to improve the properties of workpieces.In this paper, the thermal conduction is analyzed, and the microstructure transformation is considered during quenching process. Thermo-physical properties of materials are changed with the temperature. A two-dimensional FEM transient thermal conduction model of temperature field are developed. According to this model, calculating programs of temperature field and microstructure field are designed .VC++6.0 is used to compile Numerical simulation system of large forging in quenching process, and pretreatment and aftertreatment programs are integrated with calculating program, so that this program can be used easily. In the pretreatment program, the FEM meshes can be divided automatically; the thermo-physical properties of materials can be inputted; TTT curves of different steel are vectorized and the database is set up. The program can provide the data for the calculation of the temperature field and the microstructure field. The aftertreatment program is developed using OpenGL technology, and it can vividly display the temperature field and the microstructure field during the quenching process.The calculated result of this system can predict the change of temperature and final microstructure distribution of axisymmetrical large forging during quenching process, and it can also provide scientific support for the technical design and performance prediction of quenched workpieces. It lays down a foundation for the calculating of stress field.