Non-consumable composite welding electrode

Details Non-consumable composite welding electrode Non-consumable composite welding electrode

B - Operations, Transporting

23

K

327/52

B23K 9/16 (2006.01) B23K 35/02 (2006.01)

Patent

CA 1140994

9 48,445 ABSTRACT OF THE DISCLOSURE An improved tungsten inert gas-shielded non- consumable composite welding electrode having a solid tungsten rod center (12) and a concentric outer sleeve (14) substantially lower in electrical resistivity than the tungsten rod, bonded adhesively and cohesively to the tungsten by flame spraying so that the surface irregular- ities of the mating surface areas of the tungsten and outer sleeve mechanically interlock. The improvement is provided by coating the outer sleeve onto the tungsten center and adhesively and cohesively bonding the interface of the surface area of contact to maintain a minimum resistance electric coupling at welding operating tempera- tures.

359879

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