基于Deform-3D和正交实验法的GH4169合金涡轮盘热模锻工艺优化

Research on optimization of GH4169 turbine disc hot die forging technique based on Deform-3D and orthogonal experimental method

在Deform-3D有限元数值模拟过程中应用正交实验设计方法,对涡轮盘热模锻工艺进行优化设计,并系统分析不同工艺参数对终锻涡轮盘微观组织的影响规律。结果表明:当GH4169合金涡轮盘变形温度为1010℃,模具温度为960℃,变形速率为1mm·s-1,摩擦系数为0.02时,可以获得微观组织较均匀的终锻件。同时,按照最优工艺进行了涡轮盘的试制,并通过对实际涡轮盘的解剖分析,证实模拟计算结果与实际解剖结果吻合较好。该研究方法可为实际生产的工艺参数优化选择提供可行的研究方法和理论依据。

The hot die forging technique of turbine disc was optimized based on orthogonal experimental design method during the finite element simulation using Deform-3D software. The effects of process parameters on the microstructure were also systematically analyzed. The results show that high quality product of GH4169 turbine disc can be expected through the hot die forging. The optimal parameters are the deformation temperature of 1010 ℃, the die temperature of 960 ℃, the deformation rate of 1 mm·s-1, the frictional coefficient of 0.02. At the same time, a turbine disc was manufactured in accordance with the optimal process, and the anatomical analysis was carried out on the actual turbine disc. The results confirm that the simulation results and anatomical analysis results are in good agreement, so the research method can provide some feasible research method and theoretical basis for the optimization of the practical process parameters.