Method for manufacturing a wire electrode for electron discharge machining (spark erosion machining)

摘要

The method consists in coating a brass wire (2) with a layer of metal or alloy with a low melting point and high vapour tension such as zinc, cadmium, magnesium or alloys of these metals, causing the wire to pass vertically from the bottom to the top through a nozzle (7) supplied with molten metal from a crucible (8). After cooling in an enclosure (10), the wire thus coated is brought to its final diameter and the coating to its useful thickness via a wire drawing operation. <IMAGE>