Flashless D.C. butt welding electrodes
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United States of America Patent
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-
Jan 8, 1991
Grant Date -
N/A
app pub date -
Sep 18, 1989
filing date -
Sep 18, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pair of clamping electrodes for use in flashless D.C. butt welding of aluminum and the like are disclosed. Each clamping electrode is provided with a clamping face for engaging opposed major surfaces of a work piece. The electrodes are configured so that, when a pair of opposed clamping electrodes are clamped around a workpiece having a pair of opposed major surfaces and a pair of opposed minor surfaces, the electrodes form opposed containment walls adjacent to the minor surfaces of said workpiece. The pair of opposed clamping electrodes preferably include pinching surfaces adjacent to each of the containment walls and the clamping surfaces. According to a preferred embodiment, a first clamping electrode is provided with a flat clamping surface and a second, opposed clamping electrode has a compound clamping surface including a flat clamping surface for engaging a major surface of a workpiece and two opposed containment walls adjacent the flat clamping surface. The containment walls are positioned to be adjacent to the minor surfaces of a workpiece when the clamping surface of the second electrode is engaged with a major surface of a workpiece.
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