Electric heating – Metal heating – By arc
Patent
1990-04-12
1991-09-03
Albritton, C. L.
Electric heating
Metal heating
By arc
21912163, 21912174, 21912178, 21912182, 21912184, B23K 2602
Patent
active
050456687
ABSTRACT:
Apparatus and method for aligning a welding device along the center of a gap defined by confronting edges of at least two workpieces to be joined, wherein relative motion between the welding device and the workpiece gap occurs along a longitudinal axis substantially parallel to the gap such that the proximal edges of the workpieces can be joined by forming a weld seam along the gap during the relative motion. The apparatus preferably includes an imaging system for determining the location of the gap center relative to a predetermined two dimensional coordinate system by monitoring an image of a vision area along the gap downstream of the welding zone. In a preferred embodiment, the imaging system is effectively isolated from the welding zone through use of a high magnification optics system, a shroud structure, an independent light source, and a vectored jet of inert gas supplied to the welding zone.
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Hoover Bradley R.
Justice Robert J.
Nagle William W.
Neiheisel Gary L.
Albritton C. L.
Armco Inc.
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