B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/108, 327/113
B23K 35/04 (2006.01) B23K 11/30 (2006.01) B23K 35/02 (2006.01) B23K 35/40 (2006.01)
Patent
CA 1332962
Resistance welding electrodes and processes using the same are provided. The electrodes have a base portion and an integral nose portion projecting therefrom, with the nose portion terminating in a welding tip face. The nose portion tapers inwardly between said base portion and said welding tip face with a concave profile taper such as a frustum of a vortical surface. The electrodes used may be made up of a conventional copper material having copper combined with one or more metals selected from the group consisting of chromium, zirconium, cadmium, cobalt, nickel, beryllium, tungsten, aluminum, tungsten carbide, iron, and molybdenum; or, may be made of essentially pure copper. The electrodes may be used in a welding process, which provides for a generally linear increase in current stepping with reduced or eliminated conditioning of the electrodes. The welding tip face has a convex curvature which may range between about a two inch and a eight inch radius of curvature, and which preferably has a radius of curvature of about four inches. Both male and female electrodes may be used with cooling recesses in the electrodes as well as an offset nose portion. The diameter of the welding tip face may be about equal to the length of the nose portion.
614510
Bush Arden W.
Shirley Everett E.
Cmw Inc.
Smart & Biggar
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