Patent ID: 6448527
Filing Date: 2002-09-10
Classification: B23H

Abstract:
A method of manufacturing a high-strength erosion electrode having a steel core, an intermediate layer of copper or a high copper content-containing alloy and an outer layer of an alloy containing at least 40% zinc, said method comprising the steps of:providing a steel core having a carbon content of from 0.6 to 1 wt. %; applying an intermediate layer of copper or a high copper content-containing alloy onto the steel core; applying an outer layer of zinc or a high zinc content-containing alloy onto the intermediate layer to form a wire electrode; performing diffusion annealing on the wire electrode for a period of time sufficient to form the outer layer into a zinc-containing alloy having a melting point higher than the austenitization temperature required for patenting of the steel core; and performing intermediate annealing on the wire electrode under conditions sufficient to subject the wire electrode to a patenting treatment to form the high-strength erosion electrode.