Process for extruding a section or the like from an ingot and a device for that purpose

US5832767A · kind A · utility

Assignee

• Alusuisse Technology & Management Ltd. · CH

Inventors

• Diethelm Wompner · Stockach, DE
• Adolf Ames · Hilzingen, DE
• Ulf Hodel · Engen, DE
• Gregor Rotzinger · Riedlingen, DE

Key dates

• Filing date: Feb 7, 1997
• Grant date: Nov 10, 1998
• Expiry date: Feb 7, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21C35/04
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A process for extruding a section or the like body from an ingot is such that an ingot is introduced into a bore of a container and, by means of an extrusion stem, is fed in the direction of extrusion into a shape-giving opening in a die. Before the ingot enters the die opening, it is pushed out of the container by an amount corresponding to the width (t) of a collar whereupon a disk-shaped slice is sheared off the free end of the ingot and removed. The free end of the ingot is then pushed onto the die opening. In order to carry out this process, a shearing tool is provided after the end of the container facing the die and a movable shearing blade positioned over that entrance to the container bore. The disk-shaped slice should preferably be sheared away together with a residual butt of the previously extruded ingot which faces away from the die. To that end, a shearing tool with two shearing blades is provided and can be moved radially with respect to the longitudinal axis (A) of the container bore.