Metal fusion bonding – Process – Repairing – restoring – or renewing product for reuse
Patent
1984-04-27
1986-10-07
Godici, Nicholas P.
Metal fusion bonding
Process
Repairing, restoring, or renewing product for reuse
228183, 2940208, 2940213, B23K 3100
Patent
active
046154779
ABSTRACT:
A method for replacing tubes in a drum or header without removing the whole tube entirely is disclosed. According to the method, the old tube is cut off level with the header-member; a recess coterminous with the diameter of the tube is machined into the header creating a seat for a new tube; the recessed old tube end is beveled and the old tube is welded into the header-member along the bevel; and a new tube is inserted into the seat and welded to the exterior of the header-member. In a preferred embodiment, a countersink is machined in the surface of the header-member to create a greater surface for welding of the new tube.
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patent: 4235259 (1980-11-01), Hudock
Shilot Thomas
Spada Ralph E.
Edwards Robert J.
Godici Nicholas P.
Iles Kenneth W.
Rowan Kurt
The Babcock & Wilcox Company
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