5G GTAW 6" Pipe

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Guess it's about time I posted some pictures of my welding...(click on images for larger view)Procedure Specification:Material: 6" Standard Wall PipeJoint Type: Single V-Groove (60 degree included angle)Backing: NoneRoot Opening: 5/16"Root Face: 1/16"Position: 5G FixedProgression: Upward ProgressionMachine: Lincoln Invertec V350-PROProcess: GTAW (TIG)Polarity: DCENAmperage:-Root: 110 Amps-Hot Pass: 130 Amps-Fill & Cap: 130 AmpsFiller: 1/8" ER70S-6Electrode: 3/32" EWTh-2Shielding: 100% Ar 15-20 CFHAll this was done with scratch start and no amperage control (i.e. no foot pedal or finger amperage control).Root pass:Root pass closeup (pen for scale):Inside of root pass:Inside of root pass closeup (pen for scale):Hot pass (the bead that comes right after the root):I forgot to take a picture of the fill pass itself, but I did manage to get a picture of myself putting it in:The cap (with bonus background action!):Slightly closer shot:Extreme closeup of cap:With the actual welding done, it's time cut out four bend specimens (2 face bends and 2 root bends):Curses... too many images, will continue in next post...Last edited by Tensaiteki; 05-23-2007 at 12:07 AM.Visit Tensaiteki.com
Reply:continued from previous post...The specimens must have both the root and face reinforcement removed and have all edges rounded (after grinding I went over everything with a flap-wheel):One specimen being bent:All four specimens after being bent (notice no openings at all):Closeup of one of the face bends (if you look real close you can see the weld):Closeup of one of the root bends (if you look real close you can see the weld):Don't be too harsh, I just started TIG on pipe a week ago, and prior to that I've only had a couple of months of TIG training.Visit Tensaiteki.com
Reply:Awesome post. I have seen WAY too many" I hit it with a hammer, so it must be good, or I did it this way, and it broke, so it must be wrong" threads. That right there is a real honest to goodness destructive bend test. Thanks!!! Can you do a shear test with it if you have any left over? Thanks!! Paul.
Reply:Wow I thought I was looking at a seasoned veterans work until the last pics.  Excellent work, practice will only improve on what you have already accomplished !  Brian MoyerMoyer Welding & Fabrication       LaSalle MI
Reply:Great test specimen! The bend test is very unforgiving.Tennessee Squire Association
Reply:Nice, was this for certification?DewayneDixieland WeldingMM350PLincoln 100Some torchesOther misc. tools
Reply:Looks good!  You'd have better results if you were comfortable while doing it..You look as if your doing a rollcage!!Sit down and relax!!!...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Not everyone has the  luxury of a foot control and lift start/high fequency .... especially in the field.  It looks to me like you'll be ready for a boiler shutdown.   $$$$$$$
Reply:very nice indeed,are you a cup walker?
Reply:Using a new compliment I stole from Jason Ellis as heard on Sirius Satellite Radio station The Faction: KICK A GOAL!Wish I was that good!Oh wait....maybe I am. Nope, just checked, I'm not. Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Looks good... What was the root opening?_________________Chris
Reply:Originally Posted by lorenzoLooks good... What was the root opening?
Reply:Wish my welds looked like that.  DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Nice welds. Are you at a school or something? Look at all those Lincoln welders...then the sole HF grinder. John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:My dad taught me to throw the torch cable over my shoulder so the torch becomes an extension of my arm.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:My instructor told me not to do that due to EMF radiation.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Wow, thanks for all the complements. Now to answer some questions: Originally Posted by RojodiabloCan you do a shear test with it if you have any left over?
Reply:Hmmm, not to knock that guy, but if your cables are getting THAT hot perhaps you might look into bumping up a gauge or two in size and shortening the leads a little to reduce resistance. I dunno. I am limited to the maximum output of my Ranger 9 and my cables far exceed that ampacity. I know some of  you guys run WAY bigger machines on a daily basis, so I can't speak from that experience.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:about 30 years ago me and a buddy of mine were welding some 8" thick plate. We had to weld continous so we were tag teaming it with 7018.. The lead would get so hot it would actually explode and blow itself in two.. Know it sounds unbelievable but acuatually happened...  he ws one of the best pipe welders i have ever seen...
Reply:Great looking welds for a newbie to GTAW.Looks like you favor the right side of the weld a bit longer than you should, as I did and still do when I get over tired..Try to watch out for that as it will lead to testing problems down the road when the parameters get tighter on the x-rays and bend test....Bye the way the bends look good...When they get ACID tested after the bend is when you really get to see the WELDS!!!!!Just my past coming's ( Or undoings) to HELP YOU!!!!BrettP.M. me if you have any questions!!!Thats open to anybody!!!Brett B & B Fabrication and Welding Inc.Spalding, MI.
Reply:And I thought I was doing good with my 1G mig and stick.  Those look great man.Come try it out and stay a while.
Reply:I've worked for Bechtel and Fluor Daniel both. Both are good companies, though I liked Fluor a lot more. Both of them required 6g certification on Tig and sticks. Better get to learning the STT process as everything I have read on it indicates that it will be replacing Tig, and probably fairly rapidly.The difference between art and craft is the quality of the workmanship. I am an artist.
Reply:that´s penetration!!!was the root pass made with filler? You have TIG managed by now, that´s great.Great post!My Babies: HF Drill pressHF Pipe Bender3   4.5" Black and Decker angle grindersLincoln Electric PROMIG 175that´s it!
Reply:Looks nice, especially for only doing it a week.I got a couple pointers for you though:1)  Just before putting down your final cap pass, take a flapperwheel to the pipe, where the bead will be on the outer surface.  It will help the weld metal to lay in on the sides, without any tendency to undercut.  2)  A little more heat on the cap can help take out a lot of the lumpiness.The weld looks better than I've seen a lot of guys make after doing it for years.  It looks to be 100% acceptable, but I'd just work on the cosmetics of it a bit....which I'm sure you will improve on.
Reply:That's very cool. the weld is awesome And the best is that my 12 year old daughter who is my harshest weld critic gives you 3 thumbs up.don't ask about the third thumb, you don't want to knowDon't talk about it, Just do it!5/16 " root opening ??  That must be a typo.
Reply:Originally Posted by Tinbasher5/16 " root opening ??  That must be a typo.
Reply:Originally Posted by BrettI was just thinking that myself Tinbasher.It seemed odd to be running 100% argon also.Lovely welding Tensaiteki. Hope you got a pass on the pipe.Brett
Reply:Yeah, y'all are right, that's a typo... the gap was 5/32" not 5/16", oops.But 100% Argon as the shielding was correct.Visit Tensaiteki.com
Reply:Yep - that is some really great work - and excellent posting.  Heck - I even liked the cut-outs - nice work, keep it up.
Reply:Yes its a good post.well demostrated with all the close pics   Good job weld it like you own it
Reply:I was going back over the pictures - how did you cut those pieces out?  Was it a torch - if so - how do you keep the lines so straight?  What torch was used and what are the gas settings.  I cut pretty well - but that's about 3 levels up for me....Thanks
Reply:Yeah, it's a good post that shows the steps that are involved in the majority of certification tests.
Reply:Root pass closeup (pen for scale):
Reply:Great post. Nice welding.The great thing about TIG is that it the highest quality weld in terms of bend testing.I have seen roots that are shallow, and even an edge here and there that didn't open up.With 6010, any little mistake causes trouble.Challenging yourself position-wise is great, always hope for the best, but plan for the worst.When it comes to actual work and speed, the tighter fit-ups are really fast. The great thing about TIG is the ability to change your root during the re-enforcement pass.If the root is heavy in a spot, turn it up and add less filler to pull the lump out. If you have a spot that is just flush, turn it up and force some rod in there.Great pics, thanks for sharing.
Reply:BeautifulIt's way out of my league, and a real pleasure to look at"Any day above ground is a good day"http://www.farmersamm.com/