A METAL ELECTRODE FOR USE IN UNDERWATER ARC WELDING OR CUTTING,AND AN APPARATUS THEREFORE

摘要

A consumable electrode comprises a rotatable disc (1) the periphery (11) of which is intended to be placed against the workpiece and to move along it. The electrode may comprise radial or tangential bars of metal filler material. Conduits for compressed air or oxygen may extend from the centre of the disc to its periphery. The conduits may be formed by a corrugated sheet which lies between two additional layers. The material forming the conduits may be thermite. Alternatively the electrode may be a net of metal filler material with an auxiliary material within its mesh. The electrode may comprise a reciprocating elongate disc or an elongate disc supporting an endless chain.