Method for replacing tubes in a header or drum

Metal fusion bonding – Process – Repairing – restoring – or renewing product for reuse

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Details

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.

REFERENCES:
patent: 2429888 (1947-10-01), Moore
patent: 3195229 (1965-07-01), Culver
patent: 3341930 (1967-09-01), Belanger
patent: 3651558 (1972-03-01), Chase
patent: 3807024 (1974-04-01), Harvey et al.
patent: 3823464 (1974-07-01), Chartet
patent: 3962767 (1976-06-01), Byerley et al.
patent: 4235259 (1980-11-01), Hudock

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