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大型锻件锻造工艺复杂,锻件中心锻造质量难以保证。针对核电用大型圆筒形锻件芯轴扩孔工艺变形特点,结合中心压实法和刚粘塑性有限元法对芯轴扩孔工艺进行有限元数值模拟;应用响应面法,通过建立径向基函数模型,分析下砧量、芯轴转动角度和锻件表面温度对圆筒形锻件锻透性的影响规律,并对优化结果进行讨论,提出了优化锻造工艺的新方法。
Forging large forging complex, forging center forging quality is difficult to guarantee. In view of the deformation characteristics of the mandrel reaming process for the large cylindrical forgings of nuclear power, finite element method is used to simulate the reaming process of the mandrel with the center compaction method and the visco-plastic finite element method. By using the response surface method, The influence of the anvil volume, the rotation angle of the mandrel and the surface temperature of the forging on the permeability of the cylindrical forgings was analyzed. The optimization results were discussed and a new method of optimizing the forging process was proposed.