Electrode wire for electric spark cutting

Details Electrode wire for electric spark cutting Electrode wire for electric spark cutting

1989-10-17

1991-07-02

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

420429, 420430, B23H 708, B23H 106

Patent

active

050287567

ABSTRACT:
A tungsten alloy is used as a material of an electrode wire for electric spark cutting. The tungsten alloy comprises one or more elements selected from the group consisted of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and oxides thereof. An electrode wire made of such a tungsten alloy handles an improved processing speed and the accuracy of the cut surface is also improved. The number of failures due to breaking of the electrode wire has been reduced and the tensile strength of the electrode wire has been increased. The same effect can be attained when a molybdenum alloy containing one or more oxides of elements selected from the group consisted of Al, Si and K is used as an alloying component in the alloy for making the electrode wire for electric spark cutting.

REFERENCES:
patent: 2399747 (1946-05-01), Linz
patent: 2678269 (1954-05-01), Ham
patent: 4755712 (1988-07-01), Mujahid et al.
patent: 4812372 (1989-03-01), Kithany
"Fundamentals of the Pats, the Present, and the Future of Wire Technology for EDM Applications", 08/1988, EDM Digest, pp. 8-12, by Tomalin.

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