Wu H, Xu W, Shan D, Jin BC (2019) Mechanism of increasing spinnability by multi-pass spinning forming – analysis of damage evolution using a modified GTN model. Xu W, Wu H, Ma H et al (2018) Damage evolution and ductile fracture prediction during tube spinning of titanium alloy. Music O, Allwood JM, Kawai K (2010) A review of the mechanics of metal spinning. Guan S, Gao YJ (2008) Brief analysis on fabrication process of AP1000 reactor coolant pump can. Finally, a comparative experiment and stability test of thin-walled cylinder thinning spinning over a long range is carried out, which verifies that the optimized spinning parameters can be used for the long-range stable spinning of large-diameter ultrathin cylinder parts. On the basis of experimental analysis, the optimized process parameters of thin-walled cylinder spinning are obtained by using the support vector machine method: the wall thickness reduction rate cannot exceed 45% in single-pass spinning 30~40% is a reasonable choice interval the feed rate can range from 0.8 to 1.0 mm/r and the rotation speed can range from 80 to 100 r/min. The results of serialization experiments show that the thinning rate has a great influence on the spinning process state, the feed rate is secondary, and the speed has the least influence. Based on the analysis of the thin-walled cylinder spinning mechanism, this study analyzed the effects of key process parameters on the drum shape of a C-276 thin-walled cylinder spinning process by serial experiments. Therefore, it is a great challenge to select the appropriate process parameters for achieving the long-range stable spinning of large-diameter ultrathin wall cylinders. ![]() However, the rigidity of a large-diameter ultrathin wall cylinder is poor, the spinning process and forming quality are sensitive to the process parameters, and the drum-shaped result of the spinning process is prone to instability, which can cause the spinning process to be unbalanced. Thinning spinning has the advantage of enhancing the performance of a product, and it is an effective method for manufacturing large-diameter ultrathin cylindrical parts.
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