Process for coating or welding easily oxidized materials and plasma torch for carrying out this process
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United States of America Patent
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Oct 17, 2000
Grant Date -
N/A
app pub date -
Sep 20, 1999
filing date -
Jul 4, 1996
priority date (Note) -
Expired
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Abstract
A process for coating or welding easily oxidized materials is carried out by applying weld metal powder by a plasma powder welding process with an alternating current or with a direct current and a superimposed alternating current as welding current to generate a plasma arc for the powder welding process. For this purpose, one base of the plasma arc is produced in a spherical recess (34) of an electrode (32).
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