Apparatus and methods for controlling a welding process

Details Apparatus and methods for controlling a welding process Apparatus and methods for controlling a welding process

1989-05-09

1991-10-29

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 910

Patent

active

050618415

ABSTRACT:
A method of controlling an arc welding process includes establishing an arc between a welding electrode and weld joint wherein light generated by the arc is reflected by the weld pool and by the metal surrounding the weld pool. The rays of reflected light travelling substantially parallel to the axis of the electrode are collected in a video camera. The output of the video camera is fed to a monitor where an image of the weld pool is displayed in which the arc is obscured by the electrode and the arc process can be manually controlled on the basis of the image. In another method, the width of a weld pool is determined by analyzing a video image of the weld pool area.

REFERENCES:
patent: 4144992 (1979-03-01), Omae et al.
patent: 4450339 (1984-05-01), Corby, Jr.

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