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Electric resistance welding system

  • US 6,130,396 A
  • Filed: 07/09/1998
  • Issued: 10/10/2000
  • Est. Priority Date: 07/14/1997
  • Status: Expired due to Term
First Claim
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1. A resistance welding system comprising:

  • a pair of electrodes for gripping workpieces therebetween;

    an electric power source for generating a welding current comprising a plurality of cycles that is conducted across said workpieces by said pair of electrodes;

    a controller for controlling said electric power source and executing a welding operation process, and,means for adjusting one of a welding current and a welding voltage based on a sensed voltage between said pair of electrodes between welding cycles to a value required to apply a predetermined power per unit time and per unit volume so that a predetermined total power per unit volume is applied to the workpiece that will be welded.

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