导弹上的一些主要圆筒形结构件,一般是用铝合金制成的。惯用的方法是用2014铝合金板料经捲制和焊接制成圆筒形外壳,并在其內部焊上环形加强筋。这种方法不仅工序繁杂,而且成本高,产品质量也难于控制。为提高产品质量和降低生产成本,美国伊利诺斯工学院根据陆军导弹局的合同所进行的研究结果表明,內旋法可成功地制造出带內加 Some of the major cylindrical structures on missiles are usually made of aluminum alloy. The usual method is to roll and weld 2014 aluminum alloy sheet into a cylindrical shell with an annular stiffener welded inside. This method is not only complicated process, but also high cost, product quality is difficult to control. In order to improve the product quality and reduce the production cost, the research conducted by the Illinois Institute of Technology under the contract of the Army Missile Bureau shows that the internal rotation method can successfully manufacture the tape