Electric heating – Metal heating – By arc
Patent
1983-01-05
1985-10-01
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21912422, 21912434, 21912512, B23K 912
Patent
active
045448256
ABSTRACT:
Method and apparatus for welding edge joints such as turbine blades and the like, including adaptive tracking circuitry for maintaining the center of oscillation of the welding electrode substantially aligned with the center of the workpiece as the electrode is moved along the workpiece, and means for adjusting welding parameters such as welding current to prevent melt over of the edge and wirefeed rate to control overlay height as the welding electrode approaches to within a predetermined distance from the edge of the workpiece. The disclosed embodiment samples the arc signal, processes the arc signal to remove undesirable noise components, uses the processed signal to adaptively position the electrode with respect to the workpiece, and controls the welding parameters related to overlay height when the sensed position of the electrode reaches a predetermined distance from the edge of the workpiece.
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CRC Welding Systems, Inc.
Shaw Clifford C.
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