Metal fusion bonding – With means to deform work – filler – or flux portion before... – Comprising means forming one-piece blank into a tubular shape
Patent
1993-08-09
1994-11-01
Heinrich, Samuel H.
Metal fusion bonding
With means to deform work, filler, or flux portion before...
Comprising means forming one-piece blank into a tubular shape
228147, 2281737, 228265, 219 612, B23K 1302, B23K10106
Patent
active
053601564
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. The tube production machine employs squeeze rollers which are one piece members.
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Ishizaka Yuji
Katanosaka Takashi
Kimura Hiroyasu
Masuda Osamu
Heinrich Samuel H.
Kabushiki Kaisha Meidensha
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