(1) Welding Rods should be in the high-temperature drying oven drying, the electrode drying no more than two.
(2) wire packaging should be in good condition, if it is damaged and lead wire contamination or bent, the disorder should be part discarded.
(3) CO2 gas purity should be not less than 99.9% (volume ratio), the water content should be less than 0.05% (weight ratio), is less than 1MPa should stop using the bottle hypertension.
(4) The welder voltage should be normal, pressed firmly ground reliable contact, no damage cables and Welding Wires, wire feeder wire feed should be uniform, trachea should be no leakage or blockage.