Electric heating – Metal heating – By arc
Reexamination Certificate
2008-01-24
2011-11-22
Ralis, Stephen (Department: 3742)
Electric heating
Metal heating
By arc
C219S130210, C219S130310, C219S130500
Reexamination Certificate
active
08063340
ABSTRACT:
A method is provided for monitoring and controlling the process consistency of an arc welding process. The weld voltage signal is monitored and analyzed to determine the occurrence of the detachment of a weld droplet. The weld droplet detachment is determined via statistical techniques as having occurred at a normal interval following a prior detachment indicating consistent weld process or as a sporadic detachment having occurred at an irregular interval with respect to the prior detachment and indicating inconsistent weld process. The weld process is adjusted by controlling the weld process variables to maximize the predominance of droplet detachment at normal intervals and minimize the occurrence of the sporadic detachments.
REFERENCES:
patent: 5281791 (1994-01-01), Tabata et al.
patent: 62151272 (1987-07-01), None
patent: WO 03082508 (2003-10-01), None
Du Hao
Hou Wenkao
Hu Shixin
Menassa Roland J.
Wang Pei-Chung
GM Global Technology Operations LLC
Ralis Stephen
The Regents of the University of Michigan
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