Automatic pipe welding system

Details Automatic pipe welding system Automatic pipe welding system

1979-03-19

1981-08-11

Shaw, C. C.

Electric heating

Metal heating

By arc

219 61, 2191372, B23K 912

Patent

active

042836174

ABSTRACT:
Apparatus and method for rapid and automatic welding of joints which interconnect sections of pipe, and in particular oil or gas transmission pipe. The system includes at least one torch transport assembly which simultaneously moves one or more welding torches along a path parallel to the joint being welded. Selected operating parameters such as preheating power for the filler wire, of each welding torch are adjusted to accurately position each torch with respect to the joint, and to repeatably provide programmed welding parameters resulting in a uniform joint weld. The present system is disclosed in the context of hot-wire gas-tungsten arc welding torches.

REFERENCES:
patent: 3122629 (1964-02-01), Manz
patent: 3267251 (1966-08-01), Anderson
patent: 3737614 (1973-06-01), Paulange
patent: 4145593 (1979-03-01), Merrick et al.
A. J. Weissberger, "Microprocessors Simplify Industrial Control", Electronic Design 22, 10/25/75, pp. 96-98.

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