AEROSPACE SHANGHAI, Volume. 42, Issue 1, 48(2025)
Flow Spinning Forming Technology for Cylinders with Inner Cross Bars
Aiming at the problems of material thickening and long manufacturing process caused by existing cylinder splicing manufacturing methods for rocket tanks,a new process method of flow spinning forming for cylinders with bars is proposed.The coordination control mechanism of forming process and the precise forming control method for components are proved,and the prototype process and devices for forming cylinders with bars are developed.It is found that the multi-wheel spinning has more constraint points in the axial material,which increases the stiffness of the operating point of the spinning wheel,better inhibits the expansion phenomenon,and improves the uniform filling of the axial inner ribs of the grid bar.The average filling degree of three-turn wheel is improved by 4.27% compared with that of two-turn wheel.In this paper,the simplified aluminum alloy with the outer diameter of ϕ865 mm and the rib aspect ratio of 1∶1 is prepared by experiment for the first time,and a ϕ3 350 mm cylinder with inner cross bars is developed,which provides technical basis and theoretical basis for future rocket manufacturing.
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Sule FENG, Xingzhong XU, Kaiqi WU, Xueqin YANG, Heli PENG, Yue ZHANG, Chaoye SHENG, Zhongqi YU. Flow Spinning Forming Technology for Cylinders with Inner Cross Bars[J]. AEROSPACE SHANGHAI, 2025, 42(1): 48
Category: Integration of Material Structure and Function
Received: Dec. 10, 2024
Accepted: --
Published Online: Apr. 2, 2025
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