In order to improve the roundness of continuously variable wall conical rotatory parts, this paper aims to achieve precision forming of such sheet-metal casing part. The true stress-strain equation of GH3030 superalloy at normal temperature is established by experimental methods. On this basis, a power spinning finite element model about GH3030 superalloy continuously variable wall conical rotatory is established. Besides the effect of process parameters on the roundness of GH3030 continuously variable wall conical rotatory part, which is formed by power spinning, is analyzed. In conclusion, the mean and standard deviation of the roundness error of the outer surface of the conical increase gradually as the mandrel rotational velocity increases, decreasing first and then increasing with the increase of the roller nose radius. It also increases first and decreases with the increase of the roller mounting angle. The mean of the roundness error decreases first and increases while the standard deviation of the roundness error increases first and then decreases, as the roller feed rate increases. This influence factors are synthesized and optimized, and the roundness error is verified by experimental test. The research results provide a theoretical basis for improving the forming quality of continuously variable wall conical rotatory.

为了提高连续可变壁圆锥形旋转零件的圆度，本文旨在实现这种钣金外壳零件的精密成形。通过实验方法建立了GH3030高温合金的真应力-应变方程。在此基础上，建立了GH3030高温合金连续变壁圆锥旋转的动力旋转有限元模型。分析了工艺参数对动力纺丝形成的GH3030连续可变圆锥形旋转部件圆度的影响。总之，随着心轴旋转速度的增加，圆锥形外表面的圆度误差的平均值和标准偏差逐渐增大，先增大后减小，然后随着辊鼻半径的增大而增大。它还先增加，然后随着辊安装角度的增加而减少。随着辊进给速率的增加，圆度误差的平均值先减小然后增加，而圆度误差的标准偏差则先增大然后减小。综合并优化了这些影响因素，并通过实验验证了圆度误差。研究结果为提高连续变壁圆锥旋转体的成形质量提供了理论依据。圆度误差通过实验验证。研究结果为提高连续变壁圆锥旋转体的成形质量提供了理论依据。圆度误差通过实验验证。研究结果为提高连续变壁圆锥旋转体的成形质量提供了理论依据。