Hello,
I've been experiencing this on and off over the last few days when welding stainless steel exhaust tubing (304 1.5mm wall). More so yesterday so decided to ask.
It looks very much as if mid weld I suddenly have no gas. The arc tunrs into a what I can best descrive as a blow torch and in split second tugnsten becomes black and blunt.
I resharpen, check everything (gas pressure and flow), start again and finish the weld fine. Then other times that particular area still causes some sparks and blunts the tungsten somewhat but I can still weld.
The weld itself looks sugary, cratery and grey. As if I've welded without the gas or with wrong polarity.
Is this the gas? Material? Operator? Somebody must know what it is!
Thanks.
I've been experiencing this on and off over the last few days when welding stainless steel exhaust tubing (304 1.5mm wall). More so yesterday so decided to ask.
It looks very much as if mid weld I suddenly have no gas. The arc tunrs into a what I can best descrive as a blow torch and in split second tugnsten becomes black and blunt.
I resharpen, check everything (gas pressure and flow), start again and finish the weld fine. Then other times that particular area still causes some sparks and blunts the tungsten somewhat but I can still weld.
The weld itself looks sugary, cratery and grey. As if I've welded without the gas or with wrong polarity.
Is this the gas? Material? Operator? Somebody must know what it is!
Thanks.