Electrode wire for spark erosion
AssigneeThermocompact
InventorsMichel Ly, Gerald Sanchez
Life of this patent
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Abstract
The electrode wire according to the invention comprises a brass core (1) covered with a γ phase brass coating (2) having a structure fragmented into blocks (2a) between which the core (1) is exposed. The blocks (2a) have a thickness (E2) with a narrow distribution and produce a coverage of the core (1) according to a coverage rate greater than 50%. This produces a regular fragmentation of the coating, which improves the finish state of the machined parts.
Claims6
Electrode wire for spark erosion machining, comprising a core in a first alloy of copper and zinc with a zinc content between 20% and 45% by weight, and comprising a coating produced on said core, said coating comprising a second alloy of copper and zinc wherein the zinc content is greater than 50% by weight, and said coating having a structure fragmented into second alloy blocks between which there are fractures where the core is exposed, wherein, in the coating:
- the second alloy blocks have a thickness with a narrow distribution, the ratio between the thicknesses of smaller second alloy blocks and larger second alloy blocks of the majority of the second alloy blocks present being greater than 0.6, and
- the second alloy blocks provide a coverage of the core according to a coverage rate greater than 50%.
Dependencies are inferred from the claim text.