Wire EDM large machining speed.

摘要

Thread machining electrode spark erosion, comprising a metal core (16) with a coating of a covering layer (17) of diffused zinc alloy, characterized in that: - the bore (16) is of unalloyed copper, - the coating layer (17) is zinc alloy diffused copper and, - the thickness (E) of the coating layer (17) of copper alloy and zinc is more than 10% of the diameter (D) of the thread electrode.