2 inch 6g xx extra heavy wall pipe

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Hello I never had a xx heavy wall test??? i have had schedule 40-80 mostly,,,,,this is a 6010 root and 7018 fill and cap,,,i got uset to running 7018 for my hot pass in hopes  of burning out anything left behind,,,ofcoarse i love 3/32 at safe amp to not blow through,,,,well tell me how some of you guy tips and tricks on xx heavy wall 2inch carbon pipe,,,smaw 6010 root/7018 cap,,,,,,,,,,,     i just wanna hear what some of u guys think..
Reply:how much more different would a 2inch xx heavy wall be than taking a schedule 80 2inch?????? i guess that would be a better why of asking my question..........i know it would be more passes,,,,and maby allowing more time to let the pipe cool down inbetween passes,,,,,other than that????????? anything different?????
Reply:The root and the first few passes are similar to 2" sch 80. After that............ your coupon will heat up to the point where the metal almost "evaporates". The more you pour the heat to it.... the worse it gets.Run your root and 4-5 passes in and stop welding ...... Let it cool down. Next, bring it up just a little below flush and let it cool again................ When it's cooled down go ahead and run your cap. It it heats up,,,,, get off of it and let it cool before running your last stringer for the cap.When the undercut shows up........... it's time to go out and have a soda or cup of coffee.Lincoln SA200's... at least 15 - 20. They come and go. Growing partial to the "Short Hoods" in my old age. Last count on Short Hoods was 13 in possession.
Reply:A mixture of F3F4 cap, STT root, Inconel & Stainless. I like to use a 3/32 size electrode; 6010. I know alot of guys use 1/8", but I like a root pass that is slightly above flush. If you accidentally get sloppy, it is no big deal with a 3/32 electrode, because it deposits less metal than the 1/8th, and is easier to fix. I recommend using a 2-pass hotpass using 3/32 7018. This way, you have the bevels absorbing much of the heat, and with far, far less chance of burning through your root pass at this stage, because many guys will use a 45 degree angle weave for the hotpass, or even run a 1/8" 7018 literally over their root pass and burn right through. I find that even if the amperage is a little on the hotter side, the bevels will always absorb a great deal of the heat. Once you have your Root pass and 2 pass hot pass in. ( You can use 1 pass, it doesn't matter) then you can stay with 3/32 7018, or jump up to 1/8" or 5/32". Some companies will watch interpass temperature, but haha, most places will just be like "whatever" so if the thing is glowing, owell. Just find out what the examiner is requesting and wants. For the cap pass, I always use 3/32 because I like having a nice little cap on there. Depending on the amount of fill, I may jump to a 1/8th, but I like keeping things small and organized.  if you have a little bit of undercut on top of your last section, feel free to throw in another quick pass overtop. I sometimes turn down the amperage only a small amount and just stretch out the weld so that it puts in a thin amount of metal. Now, keep to stringers. Many guys will jump to weaves, and there's nothing really wrong with weaves in this particular test. The more passes you put on, the finer the grain structure will be.  Typically P1 material, which the ticket will probably give you P1, or P1 to PXX; I don't have my tickets infront of me at the moment but I have an F3F4 ticket LOL, that covers me for P1-P15f, P34, P4X surprised I'm not qualified to weld Kryptonite on that ticket. Sometimes you will notice that the bottom requires more fill than the top, so maybe run 1/8th at the bottom, and 3/32 at the top to even things out. Maybe even mini weaves at the bottom, and stringers up the top. just so that more metal gets into the bottom and lesser at the top. For fit up, I usually use maybe a penny land or 3/32 land. maybe a 3/32 gap, and 3/32 6010 electrode. Hot pass, I usually run 2 hot passes, both 7018, 3/32. Fill passes, I usually jump to 1/8th for fill passes to fill the test coupon up, then drop down to 3/32 for cap passes. I typically run all stringers.Also clean the inside of the pipe - I like to use a die grinder. These tests are absolutely nothing. They're stressful at first, but ones you've done as many as I have - and I do this for fun, the tests are easy and simple. You just put in a tiny little root pass, tiny amounts of fill, and you're good. Personally, I think it would be better to test a guy on 6" pipe rather than 2" pipe, because if the Welder is competent, then he would be able to put in a root pass for a good length of weld rather than just an inch at a time. Guys can get their inconel ticket easily on 2" pipe, but it takes a great deal of practice to get the technique down for 6" and larger. Lots of practice, that's for sure. Attached ImagesLast edited by Thorton; 11-07-2012 at 11:15 PM.46’ sae30047’ sa200 w/Wisconsin VF451’ shorthood56’ shorthood56’ shorthood68’ redface69 redface07’ ranger 305G13’ sae300Inconel/Hastelloy – SS – Duplex – Chrome/Carbon Tig – F3Downhand – STT/RMD – F3F4 – B Pressure
Reply:Lol, there's also many welders I know who would laugh at the combination I use - 3/32, 1/8th, maybe a little 5/32, for this specific test - I know a Welder who said that the best welders weld really, really hot because they can control the heat.. then he said he did his B pressure Weld test using a 3/32 6010 rather than a 1/8". What is Welding hot anyways? If your root pass is clean, then you don't need to weld at stupid hot temperates to burn everything out. A reasonable temperate is good enough; you don't have to be blistering hot. There's guys who weld these things with 1/8th root, sometimes putting in a heavy root pass - then 1/8" and 5/32 filler they use. Then they go off saying "big rod! big Rod! best welders weld hot!" And you pull a stunt like that on duplex stainless, and your test is done. On stainless, It will also fail in the bend test because it will crack the root pass.You're performing surgery. While some welders will go in there with a steak knife and some hedge trimmers, I like to use a scalpel, and those special little surgical scissors.46’ sae30047’ sa200 w/Wisconsin VF451’ shorthood56’ shorthood56’ shorthood68’ redface69 redface07’ ranger 305G13’ sae300Inconel/Hastelloy – SS – Duplex – Chrome/Carbon Tig – F3Downhand – STT/RMD – F3F4 – B Pressure
Reply:okey to fail a 2 inch XXL heavy wall pipe test [x-ray] ,,,,,,,,,,,,,what will the actual x-ray pick up??????? i know the porisity,slag, or trash in the weld,,,,,,,,,,,im more wanting to know will a x-ray pick up any undercut on the inside root??????or will x-ray show undercut period?????   i not sure what x-ray test shows,,,& does not show i always hear x-ray will not pick up on something but i can't remember what????????maby it was cold lap????????????anybody know this anwser????
Reply:i just got the fine details on this test,,,,,,,let me know what you guys exp is on take these test..........it is a all stick 6010 and 7018 test..........this is is 6g    2inch pipe xxl extra heavy wall,,,,,,,i belive the od is 2.75....but he said it is 5/8wall thickness.....the instructor says what ever rod is up to you,,,,but stay with in guidlines,,,,,,u know 1/8 reinforcment all the reg rules,,,,just wanna hear some of u guys experiences on takin these test
Reply:My experiences are : don't worry about these tests! I personally believe that if you are practiced enough, then no matter what the test throws at you, it is no big deal and easy to overcome.I also believe firmly: never listen to nor acknowledge other welders - especially the young ones, because alot of guys don't practice nor care enough to practice and they always go into a test with cold hands and struggle their way through. Go to a welder with lots of tickets.. Like me  lol, those other welders are like cavemen.. Steal one of the female welder Helpers from another caveman welder when he's not looking, throw her over their shoulder, carry her back to their weld tent; have her run the remote.Never ever use digital readout.. Every machine is different. Shop machines and machines for testing in training centers often have digital readouts. Grab a scrap plate. Run a bead on there, adjust if need be and go with it. You know what the different between a 6" buttweld and a 2" butt weld? Smaller size electrodes. The secret to welding is amperage.46’ sae30047’ sa200 w/Wisconsin VF451’ shorthood56’ shorthood56’ shorthood68’ redface69 redface07’ ranger 305G13’ sae300Inconel/Hastelloy – SS – Duplex – Chrome/Carbon Tig – F3Downhand – STT/RMD – F3F4 – B Pressure
Reply:Hello for EverybodyI have nearly test for same pipe in Ireland and have question like that: What direction is for 6010 electrode, vertical up or vertical down?? I sow B-pressure description: The candidate will then weld the 5G portion ofthe root pass with an E-6010 electrode with the welding progression upward. Also should be used 1/8 electrode. I know the test for 2" xx heavy wall is different from 6" but for me is very difficult for both welding vertical up and on the electrode box is written: vertical down only. Canada may have electrodes for vertical up?