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Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting

United States Patent

*** EXPIRED ***
January 13, 1998
View the Complete Patent at the US Patent & Trademark Office
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The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap.
Williamson; Rodney L. (Albuquerque, NM), Zanner; Frank J. (Sandia Park, NM), Grose; Stephen M. (Glenwood, WV)
Sandia Corporation (Albuquerque, NM)
08/ 426,545
April 21, 1995
GOVERNMENT RIGHTS The Government has rights to this invention pursuant to Contract No. DE-AC04-76DP00789 awarded by the U.S. Department of Energy.