Tungsten electrodes <-> welding result



As guideline regarding the choice of electrode diameter and grinding angle the cerium tungsten electrode for TIG-welding has been named.

From this middle value the choice of other electrodes can be deviated.

The length of electrode tip should be approx. 1 to 1,5 times the electrode diameter (2,4 mm electrode => length of tip 2,4 to 3,6 mm).

Generally counts:

The tip of electrode should be blunted after grinding, whereby the diameter of the blunted tip should be approx. 10 % of the electrode diameter. (electrode. 2,4 mm ~ 0,25 mm). This leads to a considerably lower load of tip and therefore to a longer life time of electrode.

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Reference values: Current load (A) and Weldability



Diameter DC-current       AC-current  
  electrode (-)   electrode (+)      
  pure tungsten oxides pure tungsten oxides pure tungsten oxides
1,0 mm < 65 < 75 --- --- < 25 < 30
1,6 mm 45-90 60-160 < 20 < 20 30 - 90 30 - 120
2,4 mm 80 - 160 150-250 10-25 10-25 80-140 100-210
3,2 mm 150-290 220-330 15-30 15-30 130-190 150-260
4,0 mm 180-260 310-490 25-45 25-45 180-270 240-350
4,8 mm 240-640 460-640 40-60 40-60 250-350 310-450
6,4 mm 480-850 480-850 50-90 50-90 320-460 380-530