Patent ID: 6713710
Filing Date: 2004-03-30
Classification: B23K

Abstract:
An apparatus with trackless movement and full penetration welding from one side, comprising:a. a preexisting gap of weld line to be welded, which can act a guide slot to perform trackless movement; b. a guide wheel unit which can be used to track said guide slot of said pre-existing gap; c. a movable weld backing which is held against the underside of the workpiece to support weld pool and control backside bead; d. a connection member which is upright positioned through said pre-existing gap of weld line to be welded; e. a fixed welding torch member which is positioned horizontally; f. two roller units which consist of guide shafts, ball bearings, support shafts, and compression springs and perform support for said fixed welding torch member and said movable weld backing to move the welding apparatus along a weld line; g. a non-consumable electrode torch with a constricting nozzle to generate plasma arc to melt the weld line; h. a wire feeder machine to feed flux-cored wire into a space in where said non-consumable electrode torch generates plasma arc on the weld zone of the base plates to be welded; i. a power supply in which polarities are connected between said non-consumable electrode in the torch and the base metal to be welded for generating a plasma arc.