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介绍了对淬火过程热传导数学模型的建立方法,并且利用ANSYS有限元分析软件对其进行仿真。通过仿真验证了数学模型,并且生成了20s和60s淬冷的应力图。通过ANASY的仿真模拟出了不同直径的圆柱体之间的淬火冷却应力图,验证了数学模型的正确性,并且从分子层面上对产生这些现象的机理进行了分析。仿真还表明:工件直径越大,冷却时间越长,热交换越充分,其内部应力能够得到较大的消除。工件在长时间的淬冷中产生了外围表层的应力,工件表现出宏观的变形,对工件的成型影响较大。这些结论有力地指导了工程实践,对生产加工零件有实际意义。
The establishment method of the mathematical model of heat conduction in quenching process is introduced, and the finite element analysis software ANSYS is used to simulate it. The mathematical model was verified through simulation, and the quenched stress maps of 20s and 60s were generated. Through the simulation of ANASY, the quenching and cooling stress diagrams of cylinders with different diameters were simulated, the correctness of the mathematical model was verified, and the mechanism of these phenomena was analyzed at the molecular level. Simulation also shows that: the larger the diameter of the workpiece, the longer the cooling time, the more heat exchange, the internal stress can be greatly eliminated. Workpiece quenched in a long time produced a peripheral surface of the stress, the workpiece showed a macro-deformation, forming a greater impact on the workpiece. These conclusions strongly guide the engineering practice and have practical significance for the production and processing of parts.