Electric welding electric welding hot what method
1: the holder of poor quality. Only to buy new premium holder.2: welding current is too large so beyond the rated load. Reduce the welding current; or the purchase of a large holder.3: welding tongs and cable not connected. Cable clamp and re tightened firmly.4: welding cable or welding line is not too thin; special cable; replacement of large diameter cables.5: welding cable socket or fastening screws loose, bad contact. Re tighten it.
So the quality of the market is the holder of iron copper resistance, heat resistance, so too large. Do not remind you of copper core holder, because copper is too soft, not several times will be too large jaw not live clip electrode, the market is clamoring for a copper holder is a lie. Do the holder must use special brass, brass hardness and wear resistance, and conductivity are suitable for welding. Should buy a real casting brass tongs.
The main reason is caused by poor contact welding butt welding line and oxidation.
