Abrégé

The present invention relates to an electrode wire for electric discharge machining and a method for manufacturing same. The electrode wire has a structure in which a coating layer is formed on the surface of a core wire, wherein the coating layer is an alloy layer of nickel and zinc. The coating layer may be formed by the steps of: forming a nickel layer on the surface of the core wire; forming a zinc layer on the surface of the nickel layer; and forming an alloy layer of nickel and zinc through diffusion heat treatment. The electrode wire and the method for manufacturing same of the present invention, by forming the nickel layer having a high melting point and high hardness in the step before forming the zinc layer and then applying diffusion heat treatment to the nickel layer so as to form a tightly bonded nickel-zinc alloy layer on the core wire surface, are capable of withstanding high heat generated during electric discharge machining, increasing an applied voltage, and improving a flushing effect, an automatic wiring rate by surface hardening, and a function of keeping a mold surface clean.

Classes IPC  ?

• B23H 7/08 - Fils-électrodes
• B23H 1/06 - Matériaux pour électrodes
• C25D 5/50 - Post-traitement des surfaces revêtues de métaux par voie électrolytique par traitement thermique
• C25D 5/12 - Dépôt de plusieurs couches du même métal ou de métaux différents au moins une couche étant du nickel ou du chrome
• C23C 2/28 - Post-traitement thermique, p.ex. par traitement dans un bain d'huile
• C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet caractérisé par le matériau de revêtement

Abrégé

The present invention relates to: an electrode wire for electric discharge machining, having a coating layer formed on a core wire; and a manufacturing method therefor. The electrode wire for electric discharge machining comprises a core wire and a coating layer fixed so as to have a pattern on all or a part of the surface of the core wire, wherein the coating layer can be formed by performing a printing process using molten or powdered metal. The present invention includes the alleviation of a peeling or cracking problem of the coating layer and the provision of an electrode wire that is beneficial to the implementation of high processing speed and processing quality, thereby enabling all limiting factors in a process and a product, which are involved in the conventional plating process, to be effectively alleviated.

Classes IPC  ?

• B23H 7/08 - Fils-électrodes
• B23H 1/04 - Electrodes spécialement adaptées à cet effet ou leur fabrication
• B23H 7/22 - Electrodes spécialement adaptées à cet effet ou leur fabrication