Process for extruding a hollow section or the like from a billet and a device for that purpose

US6192730A · kind A · utility

Assignee

• Alusuisse Technology & Management Ltd. · CH

Inventors

• Adolf Ames · Hilzingen, DE
• Diethlem Wompner · Stockach, DE

Key dates

• Filing date: Sep 16, 1999
• Grant date: Feb 27, 2001
• Expiry date: Sep 16, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21C33/006
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A process for extruding a section or the like from a billet, in which a billet is introduced into the bore of a container and, by an extrusion stem, is fed in the direction of extrusion into a shape-forming cross-sectional opening in a die. The billet material is pressed into a central inlet in the die and the resultant ductile mass fed outwards at an angle to the direction of extrusion through a plurality of channels to the shape-forming cross-section. The main load is applied by the extrusion force acting outside the central inlet and the shape-forming region and is preferably diverted outside the shape-forming region to the supporting die parts.