Electric heating – Metal heating – By arc
Patent
1975-04-08
1977-08-23
Truhe, J. V.
Electric heating
Metal heating
By arc
219131R, B23K 910
Patent
active
040442233
ABSTRACT:
The proposed apparatus comprises an arc-welding source, including a current pulse generator with a control circuit and a rectifier.
A choke at the output of the rectifier is connected to the electrode-article gap, in series with the rectifier of the pulse generator. The rectifier is a fullwave rectifier and comprises two controlled thyristors and two uncontrolled diodes. As the apparatus is in operation, one of the thyristors becomes conducting during each alternating current half-cycle. Current pulses pass through the arc and choke and are added to the pedestal of the current that continuously flows from the rectifier through the welding circuit.
REFERENCES:
patent: 3577156 (1971-05-01), Paton et al.
patent: 3588465 (1971-06-01), Anderson et al.
patent: 3588466 (1971-06-01), Daggett
patent: 3774011 (1973-11-01), Aldenhoff
patent: 3775585 (1973-11-01), Okada
patent: 3813594 (1974-05-01), Toth
patent: 3890557 (1975-06-01), Bogdanov et al.
patent: 3902037 (1975-08-01), Goto et al.
patent: 3906289 (1975-09-01), Lepp et al.
Lebedev Vladimir Konstantinovich
Pashulya Mikhail Petrovich
Paton Boris Evgenievich
Sheiko Pavel Petrovich
Steblovsky Boris Antonovich
Shaw Clifford C.
Truhe J. V.
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