Aiming at the difficulty in spinning forming of seamless hydrogen storage vessels caused by the relatively high design pressure and wall thickness, a numerical simulation model of multi pass hot spinning of a seamless vessel was established by ABAQUS, the evolution law of the stress strain and the influence of thickness during hot spinning process were analyzed. The influence of key process parameters such as feed, roller fillet radius, and temperature on spinning forming process was also analyzed for seamless hydrogen storage vessel with thick wall, and optimization suggestions were proposed. The results show that as the thickness increases, the equivalent plastic strain after forming the vessel increases, and the forming difficulty increases. Appropriately reducing the feed, increasing the roller fillet radius, or increasing the temperature are beneficial to the spinning forming of thick walled vessels. Finally, the hot spinning process parameters of the 50 MPa hydrogen storage vessels are obtained, that is, the feed amount is 10 mm, the roller fillet radius is 50~60 mm, and the temperature is 1 100 ℃, which provides a reference for the actual production. |