Process for the manufacture of composite sections and a device for carrying this out
AssigneeSwiss Aluminium Ltd.
InventorsAlfred Wagner, Hermann Kidratschky
Life of this patent
Estimating the term…
Abstract
A process for the manufacture of composite sections comprising at least two components. This is achieved by means of extrusion in particular using a light metal matrix, whereby at least one insert or similar component is fed into the stream of metal being extruded, on each side of the main axis in the region of the extrusion die bearing and covered all over with light metal as a result of pressure from all sides.
Claims16
An extrusion process for use in connection with an extrusion device including an entry plate, a mandrel plate, and a die plate defining a die bearing having an axis for manufacturing a composite section including at least a light metal and another metal, the steps comprising:
- providing on opposite sides of said device channels defined by said entry plate and said mandrel plate, each of said channels having a first portion extending substantially radially and being defined substantially entirely by said entry plate, having a second portion extending along a curved path from said first portion and being defined substantially by the combination of said entry and mandrel plates, and having a third portion extending substantially axially from said second portion and being defined substantially entirely by said mandrel plate, said third portion projecting into an opening defined in said die plate;
- supplying said light metal to said extrusion device;
- supplying said other metal in a solid preformed state to said extrusion device through said channels for extrusion along with said light metal;
- extruding said light metal, whereby said light metal flows while said other metal is substantially unchanged in its physical form.
In an extrusion device for the manufacture of composite sections including at least a light metal and another metal which is preformed, in combination,
- an entry plate and a mandrel plate, said entry plate extending for a portion into one side of said mandrel plate and defining therewith a plurality of channels forming passages for said other metal,
- each of said channels having a first portion extending substantially radially and being defined substantially entirely by said entry plate, having a second portion extending along a curved path from said first portion and being defined substantially by the combination of said entry and mandrel plates, and having a third portion extending substantially axially with respect to said plates from said second portion and being defined substantially entirely by said mandrel plate;
- and a die plate disposed adjacent the other side of said mandrel plate and defining a die bearing,
- said third portion projecting into said die plate;
- the cross section through said first portion being generally larger than the cross section throughout said third portion, whereby the friction of said other metal through said channels during the extrusion is relatively minimized;
- said entry plate and said mandrel plate defining an opening communicating with said die bearing for the extrusion of said light metal.
Dependencies are inferred from the claim text.