Electrode Configuration

Resistance spot welding electrode configurations can be matched to specific application needs:

Opposed Configuration:  top and bottom electrodes are used to hold the parts and provide the current path. An opposed weld is preferred over other configurations because it is easier to set-up and control the current path, and should be used whenever possible.

Electrode

Series Configuration: using two top electrodes, a series weld can be used when there is no access to the bottom part. Both electrodes contact the top part and current is passed through the top part to the bottom part. Two weld spots are produced, one under each electrode. Independent force control allows for separate adjustment of each electrode force and is used to balance the heat between the two weld spots.

Electrode Configuration

Step Configuration: Two top electrodes are used, but one electrode contacts the top part and the other electrode contacts the bottom part. A single weld is produced at the part to part interface. Independent force control allows the electrode force on the bottom part to be set much higher than the force on the top part.

Electrode Configuration

Parallel Gap Configuration:  Parallel gap welding results in a single weld spot under the gap between the electrodes. It is used to weld very small parts.

Electrode Configuration

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