Method and system for dual control of resistance welding

Details Method and system for dual control of resistance welding Method and system for dual control of resistance welding

1981-04-21

1984-04-10

Shaw, C. C.

Electric heating

Metal heating

For bonding with pressure

219 8641, 219110, 219114, B23K 1124

Patent

active

044423373

ABSTRACT:
A method and system for controlling resistance welding whereby the preferred quality of resistance welding can be ensured automatically during the welding process by controlling the electrode pressure so that the electrode resistance changes in accordance with a reference resistance curve, or by additionally controlling the electrode voltage so that the electrode voltage changes in accordance with a reference voltage curve. The system according to the present invention comprises an electrode voltage sensor, an electrode current sensor, a reference resistance generator, a reference voltage generator, a differential amplifier, a pressure control device, a current controller and so on.

REFERENCES:
patent: 2848595 (1958-08-01), Van Sciver
patent: 3068350 (1962-12-01), Archer
patent: 3149221 (1964-09-01), Watter et al.
patent: 3654424 (1972-04-01), Vanderheist

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