Electrode wire for electric spark cutting
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United States of America Patent
Stats
-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Oct 17, 1989
filing date -
Oct 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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