Patent · US Expired

Extrusion press for manufacturing extruded sections from metal billets

US4606210A · kind A · utility

2Cited by

11References

16Claims

0Family size

Assignee

Swiss Aluminium Ltd. · CH

Inventors

Alfred Wagner
Adolf Ames · Hilzingen, DE
Ulf Hodel · Engen, DE

Key dates

Filing date	Dec 3, 1984
Grant date	Aug 19, 1986
Priority date	—
Expiry date	Dec 3, 2004

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21C25/04
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A process and apparatus for the indirect extrusion of hollow sections over a mandrel having a diameter d.sub.D from a plurality of billets each having a diameter d.sub.on wherein the volume throughput of metal is greater than that obtained by the indirect extrusion over a mandrel of said hollow sections from a single hollow billet under the same extrusion force thereby increasing productivity wherein the diameter of the mandrel d.sub.D with respect to the diameter d.sub.on of the billet to be extruded over the mandrel is d.sub.D <0.4 d.sub.on.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.