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US 4,518,111 AGranted
Method of fabricating a bi-metal tube
AssigneeExplosive Fabricators, Inc.
InventorRoy Hardwick
Life of this patent
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AssigneeExplosive Fabricators, Inc.
InventorRoy Hardwick
Estimating the term…
A method of forming a composite tube having an inner thin liner or layer of expensive material surrounded by a thick layer of less expensive material has been provided. A thin-walled tube of the expensive material is placed inside a thin-walled tube of a less expensive material and the outer tube is imploded by explosives to be metallurgically bonded to the inner tube. The composite billet thus formed is then placed within a third tube of any desired wall thickness which is of the same or similar material as the second tube. This composite is then co-extruded causing the like materials of the outer most tubes to be metallurgically bonded to each other. By this method, the relative ratios of the expensive and common materials can be selected as required by the particular use to be made of the billet and the diameters thereof can similarly be optimumly selected.
A method of forming a composite billet from dissimilar metals, said method comprising:
A method of forming a composite tube having an interior liner which is of a dissimilar material to the body of the tube and is metallurgically bonded thereto, said method comprising the steps of:
Dependencies are inferred from the claim text.