Inventors:
Petros T. Petrides - Stonington CT
Russell J. Nickerson - Mystic CT
Rodney R. Cordeiro - Stonington CT
James S. Dodson - Groton CT
International Classification:
B23K 906
Abstract:
A process and system for welding of the tungsten inert gas (TIG) type is described. A welding torch is mounted on a mechanism which provides for motion of the torch with respect to the work (a pipe being welded) in three different directions. Movement in each direction is electronically controlled so as to obtain preset magnitudes of oscillation of the torch, both vertically and laterally with respect to the work. The vertical oscillation is provided by following the pulsating arc current in accordance with a preselected control function. In addition, the system and process provides for control of substantially all of the parameters affecting the formation of the weld in order to produce improved weldments.