Ensure the area where arc is to be struck is sufficiently free of Oxygen and that gas flow is adequate. Do not weld in a drafty environment Insufficient gas coverage will cause contamination of part and electrode. High flow rates can create turbulence and inhalation of gas into the area. Oxygen in the arc area results in electrode contamination s. Lower flow rates with longer pre-flow can improve arc starting.
Drafts can push oxygen into the arc area.
High weld speed causes part to travel out from under shield gas area before weld is cool Use trailing shield gas 17. Grounding Problems Make sure clamps and clamp inserts are clean of oxidation. Welding Equipment One piece of welding equipment may be malfunctioning while others are functioning correctly Try the same weld with the same batch of electrodes on another system using the same weld program and set up 19. Tooling wears and must be replaced or cleaned. Tooling is dirty or not grounded properly.