EP 0114570 B1 19870729 - DEVICE FOR THE EXTRUSION OF A HOLLOW SECTION
Title (en)
DEVICE FOR THE EXTRUSION OF A HOLLOW SECTION
Publication
Application
Priority
DE 3247977 A 19821224
Abstract (en)
[origin: US4592224A] A process for extruding a metal billet, in particular a light metal billet in an extrusion container, into the form of a hollow section through a shape-giving orifice in a die having a mandrel which determines the inner contour of the hollow section, and a device with stem for extruding should be designed such that it is possible to produce flanged tubes with integral flange in one piece. This object is achieved by way of the invention in that in the extrusion of the hollow section an integral flange is produced, preferably at the end of the extrusion stroke. In the extrusion press suitable for this purpose a shaping recess is provided, with respect to the extrusion direction, immediately before the orifice of the die, the radial dimension of which is greater than the width of the die orifice. As such it should be possible to separate the die radial to the extrusion direction into at least two parts.
IPC 1-7
IPC 8 full level
B21C 23/04 (2006.01); B21C 23/08 (2006.01); B21C 23/14 (2006.01); B21C 23/21 (2006.01); B21C 25/02 (2006.01)
CPC (source: EP US)
B21C 23/085 (2013.01 - EP US); B21C 23/14 (2013.01 - EP US); B21C 23/217 (2013.01 - EP US); B21C 25/02 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0114570 A2 19840801; EP 0114570 A3 19841010; EP 0114570 B1 19870729; DE 3247977 A1 19840705; DE 3372720 D1 19870903; US 4592224 A 19860603
DOCDB simple family (application)
EP 83810591 A 19831214; DE 3247977 A 19821224; DE 3372720 T 19831214; US 56331083 A 19831220