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| Numerical Simulation and Experiment Study on Tube Spinning of GH625 Reducer Tube |
| LI Bo1, YUAN Qiwei1, JIN Kai2, WAN Bofang3, WANG Hui2, GUO Xunzhong1, TAO Jie1 |
(1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China;
2. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics,
Nanjing 211100, China;
3. Jiangsu Toland Alloy Co., Ltd., Zhenjiang 212352, China) |
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Abstract The elastic-plastic finite element model for the GH625 neck-spinning process was established by
ABAQUS/Explicit software. The distribution of the stress, strain and the variation of the cross section of tube spinning process
were analyzed. Furthermore, the effect of the spinning parameters on forming quality was obtained, such as axial feed
rate, roller nose radius and roller installation angle. The spinning process results showed that the cross-sections in different
zone of tube were generated different deformation. The results also reflected that the thickness increased with the increasing
of the axial feed rate and roller nose radius. The roller installation angle had little influence on the tube thickness. The ellipticity
became larger as the axial feed rate and roller nose radius increased. Located away from the free end, the ellipticity
increased as the roller installation angle decreased. The distribution of the ellipticity was uneven when the roller was near
the free end of the tube. Finally, the process parameters was selected based on the simulation: 0.25mm/r of axial feed rate,
2-4mm of roller nose radius, 90º of roller installation angle. The experiment was conducted and the accuracy quality tube
was manufactured by neck-spinning experiment.
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2017, 
