electrodes exploding

[Mks]

im using a flashcut program and thermal dynamics A120 power source on a water table. Electrodes are literally exploding the end off. I end up with half the electrode left .Any ideas would be appreciated

[weldguy]

That can happen if you overuse the electrode or if you have extremely bad air containing oil vapor and or water

[Mks]

thank you I will check the air but it should be good

[weldguy]

Look inside your nozzle and around the shaft of the electrode. If you see black or gray swirling marks this is carbon from the contamination in your air burning up and an indication that you need to clean up your air supply.

Also once you see the divet that forms in the end of the electrode get to be around 1/32" deep you should think about replacing it. I have seen entire torches destroyed from electrode blowing up.

[Mks]

I dont see any swirling marks on the electrode and air seems to be clean thank you

[weldguy]

I am guessing that you may be just using the electrodes for too long. Once the hafnium insert in the center gets too small the copper electrode will melt down.