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Answers to the questions buyers ask when choosing, fitting and looking after replacement gas nozzles for MIG/MAG welding torches.
The gas nozzle is the shroud at the front of the torch. It guides the shielding gas around the contact tip, wire and weld pool so the molten metal is protected from the air. If the gas shield is poor, welds tend to show porosity.It is a wear part: spatter, heat and knocks gradually damage it, so spares are needed from time to time.
The nozzle has to be made for your torch series, because the fitting, diameter and length differ between torch sizes. Check the torch rating or marking and compare the old nozzle with the new one.Then choose the size for the job: higher current and larger wire generally call for a larger bore, while a joint with limited access may need a smaller or tapered nozzle. Check the torch maker's guidance, or ask our team if you are unsure which fits.
Clean it regularly with a purpose-made nozzle reamer of the right size, taking care not to scratch or distort the bore. Remove the nozzle first and let the torch cool completely. Check for spatter sticking inside and for blocked gas ports before and after use.Do not hammer the nozzle against the bench to knock spatter out, as this can damage it and the torch. Spatter that has restricted the gas path can cause porosity, so do not leave cleaning until the nozzle is clogged.
Yes, used sparingly they can help keep a nozzle cleaner and prolong its life, because spatter sticks less readily and is easier to remove.Use only products made for welding torches and follow the maker's instructions. Keep the spray off the insulating part of the nozzle, as some products can break down the insulating material. Do not let any product get into the gas path in a way that contaminates the weld.