GTAW stainless aws cert (need help)

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im having trouble with my 10g overhead buttweld.has anyone completed this and if so, what kinda settings did you use
Reply:Not sure if this is any help to you or not but I just passed my TSSA pressure pipe stainless GTAW 6g test a couple weeks ago. What material are you using? what filler? what problems? Are you getting full penetration? incomplete fusion? sugaring on the back side? If so, are you back shielding the joint?Last edited by snoeproe; 09-26-2009 at 10:23 PM.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:Originally Posted by snoeproeNot sure if this is any help to you or not but I just passed my TSSA pressure pipe stainless GTAW 6g test a couple weeks ago. What material are you using? what filler? what problems? Are you getting full penetration? incomplete fusion? sugaring on the back side? If so, are you back shielding the joint?
Reply:i know which test youre talking about and it is a terrible test. makes a professional look like a rookie huh? are u purging the back side? what is sagging the face, root, or both?
Reply:is this pipe or plate? i know for my pipe on the overhead portion although their isnt a tremendous amount of overhead on a pipe i add lots of filler material, you can see inside the pipe while your adding on the over head portions so you know how much to add and how long to stay in the root opening before you wash to the sides. remember gravity is against you while doing the overhead portion so adding enough filler and letting it cool by washing to the bevels is key on maintaining correct root characteristics. Travel speed is also key, being stainless you do not want to overheat it, and of course maintaining a purge. Think of it this way, if your not adding filler your not establishing a good root, and if your going too slow and the material isnt cooling sufficiently it will sag, you can use your filler to cool your puddle, the more you add the cooler your puddle will become its not drastic but a very good tool to use once you can recognize how its done.
Reply:Physics! Gravity pulls on molten steel.  JGSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :