管材模头拉伸取向成型方法研究的进展

Advances in Die-Drawing Orientation Process of Pipe Extrusions

模头拉伸是一种制造自增强管材制品的新方法 ,它是把长链分子沿管轴方向或周向进行有序排列来实现取向加工的。本文先描述了传统的扩张模拉伸和我们采用的“胀拉”方法 ,然后讨论了这类方法的优点、发展的前景及当前理论研究的侧重点。

Die-drawing, in which the long-chain molecules become stretched uni-or bi-axially and aligned along the pipe axis or/and around the circumference, is a novel process for self-reinforced pipe manufacture. Traditional methods of pulling pipes through a cone mandrel and our own concrete technology--stretching inside pressurized pipes are presented in this paper. The advantages, developing prospects and emphasis in theoretical study are introduced.\;