Correcting these deficiencies often improves electrode feedability markedly. Shown above are important accessory components, each of which must be the manufacturer's recommended equipment for the specific size of electrode employed. Excessive drive roll pressure distorts the electrode increasing frictional drag through the liner and contact tip. The edges of the U-groove must be chamfered, not sharp. Dust Covers - Using dust covers and periodically cleaning the dust and dirt from the liner increases service life.
Proper storage is also important in reducing contamination.
AlcoTec recommends that electrode be stored in a controlled atmosphere below thirty percent relative humidity, preferably a temperature and humidity controlled cabinet. Packages containing electrode should never be left outdoors or stored in unheated buildings. Electrode should never be left in equipment overnight unless protective means are added to the equipment, such as gas purge, resistance heater, etc. Contact Tips - Correct I.D. of the contact tip is of paramount importance. If there is too much clearance between the electrode and the contact tip, arcing will occur.