Control systems for welding machines

Details Control systems for welding machines Control systems for welding machines

1974-11-12

1977-01-04

Kozma, Thomas J.

Electric heating

Metal heating

For bonding with pressure

B23K 1124

Patent

active

040015394

ABSTRACT:
A welding machine is described in which current to the welding electrodes is controlled by an S.C.R. unit. The S.C.R. unit is provided with control pulses in accordance with a predetermined program so that the power fed to the welding electrodes should follow a predetermined characteristic. A simulator is provided to simulate from the control pulses, the energy characteristic that the welding electrodes should follow. The actual energy characteristic of the electrodes is monitored. If the actual energy characteristic falls outside the simulated characteristic, a fault signal is generated.

REFERENCES:
patent: 3240961 (1966-03-01), Noth
patent: 3389239 (1968-06-01), Treppa et al.
patent: 3504157 (1970-03-01), Vanderhelst
patent: 3875367 (1975-04-01), Tanaka

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