Method of fabricating a bi-metal tube

Details Method of fabricating a bi-metal tube Method of fabricating a bi-metal tube

1983-10-17

1985-05-21

Ramsey, Kenneth J.

Metal fusion bonding

Process

Using explosive energy

228108, 228175, B23K 2008

Patent

active

045181110

ABSTRACT:
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.

REFERENCES:
patent: 3535767 (1970-10-01), Doherty et al.
patent: 3740826 (1973-06-01), Baba
patent: 4039870 (1977-08-01), Sterrett
patent: 4045288 (1977-08-01), Armijo

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