Plasma Nozzles
Clearance (the distance between the workpiece and the tip of the torch) is a critical factor in ensuring cut quality and component life. Even small changes in torch height can affect the angularity of the cut surface. Torch height is especially important during piercing.
Clearance (the distance between the workpiece and the tip of the torch) is a critical factor in ensuring cut quality and component life. Even small changes in torch height can affect the angularity of the cut surface. Torch height is especially important during piercing. A common mistake that operators make is to pierce too low. This can cause metal slag to splash onto the front of the nozzle and protective cap. Arc breakage can even occur if the torch pierces while touching the metal or drags along the cutting surface while cutting. Broken arcs can cause damage to consumables and sometimes torches. The recommended pierce height is 1.5 to 2 times the recommended cut height.
Consumables should not be replaced immediately after the specified number of hours of use, but should be checked for wear first. Are there notches on the inside or outside of the nozzle? Is the nozzle hole no longer circular? If so, it needs to be replaced. If this is not the case, the nozzle will most likely still be usable.
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