Welding management apparatus

Details Welding management apparatus Welding management apparatus

1993-02-22

1993-11-30

Heinrich, Samuel M.

Metal fusion bonding

With control means responsive to sensed condition

Work-responsive

228 175, 219 612, 219 615, 219110, B23K 1100, B23K 1125

Patent

active

052657876

ABSTRACT:
A welding management apparatus for use with a tube production machine. A workpiece fed from a roll of metal strip is formed in a tubular formation having side surfaces opposite to each other. An upsetting pressure is applied to joint the opposite side surfaces of the workpiece at a jointing point. A high frequency power is supplied to the workpiece to weld the opposite side surfaces at the jointing point so as to produce a metal tube member. The welding management apparatus comprises a camera positioned to have a visual field including the jointing point for producing a video signal indicative of an image including an area luminous with a pre-arc produced in the visual field. An image processor converts the video signal into a luminance distribution pattern. An inference unit is provided for inferring a defective welding condition based upon the luminance distribution pattern. The inference unit includes an alarm unit for producing an alarm when a defective welding condition is inferred.

REFERENCES:
patent: 4254323 (1981-03-01), Takamatsu et al.
patent: 4280137 (1981-07-01), Ashida et al.

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