Patent ID: 6066823
Filing Date: 2000-05-23
Classification: B23K

Abstract:
A welding torch for use in tube to tubesheet welding, wherein is provided a box header having an interior bounded by at least a first wall and a second wall, said first wall containing a plurality of plug holes therethrough, and said second wall being opposite said first wall and parallel thereto, and containing a corresponding plurality of tube holes, comprising:(a) an elongate substantially cylindrical barrel havingan exterior surface and an interior,a diameter and a length, and,a forward terminus and a reward terminus,said barrel length being longer than a distance between said first wall and said second wall;(b) a water jacket for cooling said barrel during operations, said water jacket being positionable within said barrel interior;(c) an electrode mounted proximate to said forward terminus of said barrel for melting a weld metal, said electrode being electrically connectable to a weld power source;(d) a wire feed liner for guiding the weld metal to said electrode, said wire feed linerhaving a diameter,being mountable externally to said barrel, andbeing proximate to and substantially parallel to said barrel exterior surface along substantially the entire length of said barrel,wherein said barrel diameter and said wire feed liner diameter taken together are less than a diameter of at least one of said plug holes; and,(e) a handle positionable for supporting said barrel near said barrel rearward terminus.