Electrode lead with a porous layer for electrical discharge machining
AssigneeThermocompact
InventorsMichel Ly, Gérald Sanchez, Blanche Ouvrard, Ludovic Lafleur
Life of this patent
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Abstract
According to the invention, the electrode wire (1) for electric discharge machining comprises a metal core (2), in one or more layers of metal or metal alloy. On the metal core (2), a coating (3) having an alloy different from that of the metal core (2) contains more than 50 wt % zinc. The coating (3) comprises copper-zinc alloy (3a) of fractured γ phase, and covers the majority of the metal core (2). The coating (3) contains covered pores (5a, 5b, 5c, 5d, 5) larger than 2 μm.
Claims15
An electrode wire for electric discharge machining, said electrode wire comprising:
- a metal core, comprising one or more layers of metal or metal alloy,
- on the metal core, a coating having an inner layer comprising an alloy different from that of the metal core and containing more than 50 wt % zinc, and having an outer layer,
- wherein:
- said inner layer comprises fractured γ phase copper-zinc alloy,
- said inner layer comprising fractured γ phase copper-zinc alloy contains pores larger than 2 μm,
- said outer layer comprises one or more alloys of copper and zinc with more than 58% and less than 100% zinc by weight and covers some or all of the pores.
An electrode wire for electric discharge machining, said electrode wire comprising:
- a metal core, comprising one or more layers of metal or metal alloy,
- on the metal core, a coating having an alloy different from that of the metal core and containing more than 50 wt % zinc,
- in which:
- the coating comprises copper-zinc alloy of fractured γ phase,
- wherein:
- the coating contains covered pores larger than 2 μm,
- some or all of the pores are covered with one or more alloys of copper and zinc with more than 58% and less than 100% zinc by weight, and
- wherein some or all of the pores are covered with a mixture of alloys of copper and zinc of ε phase and η phase.
Dependencies are inferred from the claim text.