Method of controlling constant-current for resistance welding ma

Details Method of controlling constant-current for resistance welding ma Method of controlling constant-current for resistance welding ma

1985-11-19

1987-01-06

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219110, B23K 1124

Patent

active

046348301

ABSTRACT:
A method of controlling constant-current for resistance welding machines comprising the steps of: detecting the welding current flowing into the primary coil or the secondary coil of a welding transformer, applying a first half-wave current having a predetermined first phase control angle, detecting the current value and the current conduction angle at that time, calculating a power factor angle of the resistance welding machine from the detected conduction angle and the phase control angle, calculating a second phase control angle, by which a current value corresponding to a previously set value of the next half-wave of current is obtained, from the calculated power factor angle, the detected conduction angle and the detected of current value, applying the next half-wave current at the second phase control angle through a thyristor circuit to a work to be welded, and repeating the above control operation during an entire welding cycle.

REFERENCES:
patent: 4465918 (1984-08-01), Kiriyama et al.
patent: 4493040 (1985-01-01), Vanderhelst

Affiliated with

Also associated with

Rating

Method of controlling constant-current for resistance welding ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of controlling constant-current for resistance welding ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of controlling constant-current for resistance welding ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-685268