Unitized chemically etched tungsten electrode
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United States of America Patent
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May 15, 2007
Issued Date -
N/A
app pub date -
Aug 3, 2006
filing date -
Dec 31, 2002
priority date (Note) -
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Abstract
A method of making a unitized tungsten electrode which exhibits superior mechanical and electrical properties which includes providing a length of cylindrical cut stock having a predetermined diameter and length. The stock is ground to form a rough unfinished electrode having an enlarged tip or nose portion at one end integrally connected to an elongated shank section. The unfinished electrode is treated by exposure to a chemical etchant for a time sufficient to form a finished electrode characterized by a smooth nose and shank surface and rounded undercut and ends. The invention includes the electrode formed by the described process.
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