Electric heating – Metal heating – By arc
Patent
1991-12-09
1994-04-12
Shaw, Clifford C.
Electric heating
Metal heating
By arc
2191251, B23K 9127
Patent
active
053027990
ABSTRACT:
The invention is a Weld Analysis and Control System developed for active weld system control through real time weld data acquisition. Closed-loop control is based on analysis of weld system parameters and weld geometry. The system is adapted for use with automated welding apparatus having a weld controller which is capable of active electronic control of all aspects of a welding operation. Enhanced graphics and data displays are provided for post-weld analysis.
The system provides parameter acquisition, including seam location which is acquired for active torch cross-seam positioning. Torch stand-off is also monitored for control. Weld bead and parent surface geometrical parameters are acquired as an indication of weld quality. These parameters include mismatch, peaking, undercut, underfill, crown height, weld width, puddle diameter, and other measurable information about the weld puddle regions, such as puddle symmetry, etc. These parameters provide a basis for active control as well as post-weld quality analysis and verification. Weld system parameters, such as voltage, current and wire feed rate, are also monitored and archived for correlation with quality parameters.
REFERENCES:
patent: 4390775 (1983-06-01), Biava et al.
patent: 4916286 (1990-04-01), Sarugaku et al.
patent: 4920249 (1990-04-01), McLaughlin et al.
patent: 4969107 (1990-11-01), Mizutani
Burroughs Ivan A.
Goode K. Wayne
Kennedy Larry Z.
Powell Bradley W.
Rodgers Michael H.
Applied Research, Inc.
Garvin, Jr. John C.
Shaw Clifford C.
Staudt James E.
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