Ok im working on a fuel rail its 1/16" thick when im welding it im notice that there is alot of dark grey pin holes. Can having my argon up to 18-20psi be too high thats its cooling it down to fast?

 

Ok now im getting pissed at this thing. I tried gas high gas low the amps at 40-90 and i still get too hot of a weld?

WTF

 

15-20 psi that amount of gas should be enough. it might be porosity possibly from contamination did you clean the part good? also when you have a part that thin and small tube like the heat has no place to go making it harder to keep cool..

 

Yeah i cleaned it and dipped it in acetone. What filler should i use?

 

if you are welding with the gtaw process which is tig you would want to use er70s-2,6 if you want a now hasle wire to run and fuseses good with all sorts or metal if you are using the gmaw process which is mig you wnat to use er70-s