Rolling of Cylindrical Parts with External Cross Ribs

As the main structure of launch vehicles, the forming of cylindrical parts with reinforcing ribs still follows the manufacture mode of milling, rolling and welding in the middle of last century, which has the problems of long manufacturing cycle and low material utilization. In this paper, an innovative rolling method is proposed for manufacturing cylindrical parts with external cross ribs of high performance, high efficiency and low cost. Firstly, the forming principles of the rolling method are presented. Secondly, the experimental samples of cylindrical parts are formed by rolling method. Finally, the forming defects are analyzed and optimized, and the ideal cylindrical parts with external cross ribs are formed, which proves the feasibility of the rolling method.