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US 8,895,885 B2Granted
Wire electrode for spark-erosion cutting
AssigneeBerkenhoff GmbH
InventorTobias Nothe
Life of this patent
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Abstract
The invention relates to a wire electrode for spark-erosion cutting. The wire electrode comprises a core made of more than 50% by weight pure crystalline aluminum and/or one or more crystalline aluminum alloys, and comprises a coating layer encompassing the core and comprising copper, zinc, and/or a copper-zinc alloy. The proportion of the surface area of the core relative to the total cross-sectional area of the wire electrode is in the range from 60% to 95% along the entire length of the wire electrode.
Claims12
A wire electrode for cutting by electrical discharge machining, comprising:
- a core including at least one of pure crystalline aluminum or one or more crystalline aluminum alloys, wherein more than 50% by weight of the core is the at least one of pure crystalline aluminum or one or more crystalline aluminum alloys, and
- a covering layer that encompasses the core and comprises at least one of copper, zinc or a copper-zinc alloy,
- wherein, along the entire length of the wire electrode, the proportion of the area of the core relative to the entire cross-sectional area of the wire electrode is in the range from 60% to 95%.
Dependencies are inferred from the claim text.