Metal fusion bonding – Process – Repairing – restoring – or renewing product for reuse
Patent
1987-10-15
1989-07-04
Godici, Nicholas P.
Metal fusion bonding
Process
Repairing, restoring, or renewing product for reuse
228170, 228175, 228182, 228183, 228205, 228249, 228255, 228902, 2940208, 2940213, 285286, 285287, 285399, B23K 5207, B23K 3102, B23K 3300
Patent
active
048443220
ABSTRACT:
A method for replacing a damaged or defective section of a length of original piping or tubing located within a structrue such as the turbine of a jet engine wherein access to the tubing is limited, and replacing such damaged section with a new section of tubing comprises inserting a cutter mounted at one end of a flexible shaft into the interior of the original tubing and rotating the shaft to cut out and remove the damaged section of tubing leaving at least one stub section of original tubing. The stub sections of original tubing are then prepared for welding or brazing to a section of replacement tubing with a series of tools each mounted to an elongated shaft. These tools include a chamfering tool, a deburring tool, and a polishing tool. The replacement section of tubing is connected to the stub section of original tubing by inserting a hollow mounting sleeve welded or brazed to the replacement section of tubing over the end of the stub section so that the end edge of the stub section engages a brazing ring carried in the interior of the hollow mounting sleeve against the end edge of the replacement section of tubing. The elongated nozzle of an acetylene torch is then inserted into the replacement section of tubing and heats the brazing ring to form a fluid-tight joint.
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Flowers Gilbert E.
Kelly, Jr. Earl L.
Lynch Henry E.
General Electric Company
Godici Nicholas P.
Heinrich Samuel M.
Lawrence Derek P.
Rosen Steven J.
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