Arc-welding seam-tracking applications employing passive infrare

Details Arc-welding seam-tracking applications employing passive infrare Arc-welding seam-tracking applications employing passive infrare

1982-04-26

1984-10-16

Shaw, C. C.

Electric heating

Metal heating

By arc

21913001, B23K 912

Patent

active

044777124

ABSTRACT:
In an arc welding operation seam tracking is accomplished by determining the level of infrared radiation in a selected bandwidth, from at least two points lying in a direction forward of the arc torch travel and on opposite sides of the seam. Signal levels from the infrared detectors are compared and the difference signal is used to laterally position the arc torch. In this way, automatic seam tracking is accomplished thus facilitating robotic welding processes.

REFERENCES:
patent: 3370151 (1968-02-01), Normando
patent: 3666949 (1972-05-01), DeFalco et al.
patent: 3819902 (1974-06-01), Sidbeck et al.
patent: 4302655 (1981-11-01), Edling
patent: 4316075 (1982-02-01), Isoya et al.
patent: 4316076 (1982-02-01), Balfanz
"Development of Weld Pool Imaging Techniques For The Adaptive Control of Gas Tungsten Arc Welding", S. Hanumanth Rao, Thesis Presented to The Ohio State University, 1981.

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