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Tungsten electrode burns quickly?

gdzhxc.com     2021-11-01     209

Cause Analysis :

1. Excessive current; 2. Unskilled operation techniques, the tungsten electrode is in contact with the base material; 3. Wrong selection of the tungsten electrode, including diameter and variety; 4. The tungsten electrode protrudes too long; 5. The tungsten electrode sharpens too long; 6. The impure argon gas causes the tungsten needle to oxidize; 7. The flow of argon gas is too large or too small, which causes the tungsten needle to contact with the air, and the tip oxidizes.

solution:

1. Control the allowable current value to adjust the current; 2. Contact arc starting operation should be proficient or switch to high frequency, pulse arc starting, avoid tungsten electrode contact with the base metal during welding; 3. Choose a larger diameter tungsten needle, In the case of welding, choose pure tungsten electrode (green head) or zirconium tungsten electrode (white head); 4. The extension length of the tungsten electrode should be adjusted according to the argon gas flow and the size of the porcelain nozzle; 5. The sharpening angle should be appropriately increased. For details, see "Guide to the Shape and Angle of Tungsten Pole Sharpening"; 6. Ensure that the argon is dry and moisture-free, and the purity is above 99.9%; 7. Adjust the argon flow to moderate.


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