Resistance
Spot Welding Tips
1. Resistance welding is not recommended for
aluminum, copper, or copper alloys. Use for steel and stainless
steel only.
2. For more heat (amperage output), use shorter tongs.
3. For units without a heat control, tong length can be used for a
control. For instance, for thin metals where
you want less heat, longer tongs can be used.
4. Keep in mind that longer tongs can bend, and you may lose pressure
at the weld.
5. For the metals being welded, make sure there is no gap between the
pieces - this will weaken the weld.
6. Keep the alignment of the tongs straight, so that the tips touch
each other exactly. Also, maintain a proper
pressure adjustment - not too much or too little pressure.
7. When you need one side of the weld to have good appearance, you can
flatten (machine) the tip somewhat
on that side.
8. Clean the tips on a regular basis, or you will lose output
(amperage). Dress the tips with a proper tip dresser.
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