Boiler tube wearbar, stud welder and arc shield

Details Boiler tube wearbar, stud welder and arc shield Boiler tube wearbar, stud welder and arc shield

1962-02-16

1983-10-18

Goldberg, Elliot A.

Electric heating

Metal heating

For bonding with pressure

B23K 920

Patent

active

044107838

ABSTRACT:
Apparatus and methods for replacing or repairing missing or damaged abrasion resistant wearbars utilized in high velocity cyclone boilers. A retrofit wearbar having an aperture therein is utilized in conjunction with an end weldable stud wherein the wearbar and stud are placed in position over a damaged wearbar or against the boiler tube in the case of a missing wearbar and the stud end welding technique utilized to fuse the wearbar and stud in place with the damaged wearbar or boiler tube in the case of a missing wearbar in situ. An arc shield is utilized which has a projection from the weld fillet cavity thereof which cooperates in conjunction with the aperture of the retrofit wearbar to provide alignment of the stud in the wearbar and prevent shorting of the stud to the wearbar during the welding cycle.

REFERENCES:
patent: 2962578 (1960-11-01), De La Rosa
patent: 3312315 (1967-04-01), Graham
patent: 3408472 (1968-10-01), Spisak
patent: 4117297 (1978-09-01), Sholle

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