油管外加厚工艺一般采用两次成形工艺,生产成本高且生产效率受到限制。本文通过对一次成型工艺的计算验证以及对设备能力的选择,确定了一次成型工艺的可实施性,并阐述了现场工艺试验所遇到的问题及解决措施,完成了外加厚油管一次成型技术的研究并应用到实际生产当中。 Tubular outer thickening process generally uses two forming processes, high production costs and production efficiency is limited. In this paper, through the calculation of a molding process validation and selection of equipment capacity, to determine the feasibility of a molding process, and expatiate on-site process test problems encountered and solutions, completed a thick outer tube once forming technology Research and applied to the actual production.