封头制造工艺的选择

Selection of the Manufacturing Technology of Back-Covers

本文介绍了冲压成型和旋压成型两种主要制造封头方法,并对两种方法进行了对比,指出了冲压成型法存在的缺点和问题。旋压成型法的优点。旋压成型法能制造直径6～8m大型封头,适应石油化工设备大型化之需要,是封头制造工艺的发展趋势,所以封头制造应尽量选择旋压成型法。

Two methods of manufacturing back-covers the punch shaping and the rota- tion pressure shaping are introduced and compared to each other.In this paper,pointing out the disadvantages in punch-shaping and the advantages of rotation pressure shaping. In the latter back-covers as big as of 6～8 meters in diameter can be manufactured. Therefore the rotation pressure shaping that represents the tendency manufacturing of technology of back-covers should be widely applied.