High-strength erosion electrode

B - Operations – Transporting – 23 – H

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B23H 7/08 (2006.01)

Patent

CA 2264902

The invention concerns a high-strength erosion electrode having good electrical conductivity. Said erosion electrode comprises a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40 % zinc. The steel core comprises a patented structure which contains between 0.6 and 1 wt.% carbon and occupies an area of the core corresponding to between 5o and 75 % of the erosion electrode diameter, the intermediate layer occupying an area of between 5 and 40 % of the total diameter, the outer layer occupying an area of between 10 and 30 %, and the zinc content of the outer layer being between 40 and 60 wt.%.

L'invention concerne une électrode d'érosion de forte intensité présentant une bonne conductivité électrique. Cette électrode comprend une partie centrale en acier, une couche intermédiaire en cuivre ou en alliage contenant du cuivre, et une couche extérieure contenant au moins 40 % de zinc. La partie centrale en acier comprend une structure brevetée présentant une teneur en carbone qui est comprise entre 0,6 et 1 % en poids et occupe une zone de la partie centrale représentant entre 50 et 75 % du diamètre de l'électrode. La couche intermédiaire occupe une zone représentant entre 5 et 40 % du diamètre total, la couche extérieure occupe une zone représentant entre 10 et 30 %, et la teneur en zinc de la couche extérieure est comprise entre 40 et 60 % en poids.

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