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Q Describe about Push-pull welds?
- A push-pull system employs transformers with an electrically reversed polarity arrangement wherein two transformers complement each other to form circulating welding current circuit.
- Opposing electrodes are connected to different transformers and are of opposite polarity.
- Two spot welds may be obtained simultaneously.
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Fixed type In this set up, the welding head is kept fixed and the movement required during welding is provided through in the jobs to be welded. A typical application of this arr
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