The Effects of Sliding along Interface and Anodic Oxidation on Cold Welding of Aluminum-Aluminum and Aluminum-Copper

Study on Cold Welding (Report 2)

Abstract

The object of this paper is to investigate the effect of surface treatment such as the sliding along the welded interface and anodic oxidation on cold welding of aluminum-aluminum and aluminum-copper. The following results were obtained.
1. The weldability of aluminum treated by anodic oxidation is superior to that by wire brushing.
2. Aluminum is easily joined with the increase of the thickness of the anodic oxidation film.
3. The sliding along the welded interface is useful for the improvement of welds. And there is the suitable range of sliding conditions such as sliding distance and applied load. It is easy to obtain the successful joint of copper to aluminum pipe, the jig being set around the conical tapered joint and pressing the pipes together axially to make them slide each other under the suitable pressure.