Method for manufacturing noble metal electric discharge...

Details Method for manufacturing noble metal electric discharge... Method for manufacturing noble metal electric discharge...

2006-11-07

2006-11-07

Vo, Peter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S03300H, C029S527600, C029S527700, C029S874000, C072S700000, C445S007000

Reexamination Certificate

active

07131191

ABSTRACT:
In a wire drawing process for forming a wire rod containing iridium as a main component and which further contains nickel and at least one of platinum, rhodium and ruthenium, and having a cross-sectional area of not smaller than 0.05 mm2and not larger than 1.2 mm2. The worked material is continuously heated red hot and/or white hot in a heating region103extending up to 60 mm from the work inserting surface101aof a die101in a direction opposite that in which the work102moves, the work being heated to a temperature of 1000 to 1150° C. at a temperature measuring position105which is removed from the work inserting surface101aby 20 mm. Furthermore, the temperature in the region106extending from the temperature measuring position105to the work inserting surface101ais set to not lower than 1000° C., and the wire drawing rate is set to 300 to 1600 mm/min.

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Search Report for GB0408438.0 dated Aug. 4, 2004.

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