Optimization of spinning process parameters for long thin-walled cylinder of TC11 alloy based on processing map

Long thin-walled cylinders of titanium alloy have been widely used in aerospace and military industries. However, the spinning process for such kind of workpiece is relatively complicated. To obtain the workpiece with high precision and excellent microstructure, the spinning process for a long thin-walled cylinder of TC11 alloy is investigated in this study. First, the processing map of TC11 is set up based on the stress-strain curves and dynamic material models, and the optimal ranges of processing strain rate and processing temperature are obtained according to the processing map, then the range of roller feed rate is obtained on the basis of plastic deformation analysis on thin-walled cylinder spinning. Quadratic response surface method combined with finite element numerical simulation is employed to optimize the spinning process parameters with the optimized spinning temperature of 900 A degrees C, roller feed rate of 2 mm/s and roller corner radius of 6 mm. Finally, a long thin-walled cylinder workpiece with outstanding formability and fine microstructure is obtained through spinning experiment, and the experimental results demonstrate the validity of the optimized results on spinning process parameters.