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Journal of Modern Mechanical Engineering and Technology

Articles

Vol. 11 (2024)

Numerical Simulation of the Multi-Roller Skew Tandem Rolling of Unequal Wall Thickness Hollow Stepped Shafts

DOI
https://doi.org/10.31875/2409-9848.2024.11.05
Published
2024-11-02

Abstract

This paper proposes a multi-roll skew rolling forming process to address the slow forming speed of large-section shrinkage for aviation turbine shafts. Using Simufact Forming software, simulations were conducted on the GH4169 turbine shaft blank, analyzing the variations in stress, strain, and temperature fields during the forming process of a hollow shaft component with an initial wall thickness of 6mm. Additionally, we further explored the intrinsic relationship between the initial wall thickness and the depth of the concave center at the end of the workpiece. The results indicate that after multi-field coupling effects, the metal deformation of the workpiece gradually accumulates along the axial direction, reaching a peak after achieving the maximum reduction, while displaying a trend of decreasing from the outside to the inside. Additionally, there is a positive correlation between the depth of the concave center at the end of the workpiece and the initial wall thickness; as the amount of metal involved in the deformation increases, the depth of the concave center also intensifies. These findings provide an important theoretical basis for achieving flexible rolling formation of turbine shafts.

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