yes, another 7018 vert up thread

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sorry guys, but i have questions that need answers! i have my NY d.o.t test tommarow, i am very confident in everything EXCEPT for my root pass. i am supposed to do a cresent moon shape so the bead lays over both bevels. but when i try, i do get undercut. i try lifting the rod a TAD so i can get more ontop of the feet of bevels.if i do a stringer with no side to side motion, the bead does not get "fat" enough to get on both bevels.i am running at 110/115 amps DC+
Reply:you holding for second or two on the edges to let the puddle fill the crater.settings sound about right if they are accurate.G
Reply:need more info. how thick is the material, what size rod, landing, gap.
Reply:haha good callthe test is on 1"inch 22.5 degree bevels1/8th inch rodlanding? im shooting in the dark but do you mean how much longer the backing plate is compared to the beveled 1inch pieces? if so, none. gap is 1/4 inch
Reply:The root land is the flat edge of the bevel at the root opening, usually a nickel's width if you shave off the sharp edge with a grinder before tacking it up.Hold the toes and quick accross the middle to flatten the crown and fill the toes...MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:1/4" gap seems a bit much for 1/8" rod. i would try 3/16" gap if allowed. i never had to take a test useing 1". as for as the landing, that was if the test was on pipe. wish i could be of more help, but good luck with the test.
Reply:okay, well if i read and understood correctly, there is no landing, we surface grinded the bottom of our bevels so its a sharp 22.5 degree angle and surface grinded our backing strip too. idk if i got that landing thing right or not
Reply:In my years of taking the 1/8 to unlimited test for AWS and DOT certs I have found that a wider vertical root opening and tighter overhead make life much easier. Just a thought from a structural welder of 10 years. I have NY DOT, CT DOT, MA DOT for stick and flux core. Never used the flux cored on a bridge yet but its allowed...Good luck...remember to releax, sharpen the chipping hammer, bring a scratching awl, chisel, small beater, coffeee, smokes(if you smoke) and to let the plate cool before you cap it. DON'T RUSH through the test 4 hours is MORE than enough time to comfortably do 2 test plates.'Mike
Reply:Originally Posted by ironman715In my years of taking the 1/8 to unlimited test for AWS and DOT certs I have found that a wider vertical root opening and tighter overhead make life much easier. Just a thought from a structural welder of 10 years. I have NY DOT, CT DOT, MA DOT for stick and flux core. Never used the flux cored on a bridge yet but its allowed...Good luck...remember to releax, sharpen the chipping hammer, bring a scratching awl, chisel, small beater, coffeee, smokes(if you smoke) and to let the plate cool before you cap it. DON'T RUSH through the test 4 hours is MORE than enough time to comfortably do 2 test plates.'Mike
Reply:deleted.Last edited by Dr Crane; 03-28-2009 at 10:01 AM.
Reply:Originally Posted by Joscerb55awesomeyes id rather have a wider root for v up. yeah im going to be sharpening my chipping hammer, i usually use a combo of a chipping hammer, getting a rod and breaking the flux off it and making it needle sharp to pick out the tiny slag bast4rds, and today i bought a wire wheel for my angle grinder. and yes i will be using caffeine and nicotine ( especially during this test)yeah i was thinking of doing 2 passes, letting it cool for 10 min, 2 more passes, cool for 10 min exc exc.rod at about a 45?my root pass is going to make or break me, the beads after that i am fine with. its just getting both of those bevels under the bead without pulling too long of an arc
Reply:your welding 1 inch plate why not weld it with 5/32 your gap is 3/8 to 1/4 gap you have a backing strip . and your plates are laid back a couple degrees . your running your stringer keep rod close  little side to side motion and burn into the plates on each side .  make sure when you tac your plates everything is nice and tight  as you don't want slag to get between your plates and have to wagon tracks running up the plate.for this test they do allow you to use a grinder with a wire wheel on it .to clean up after each weld.when you do your welds remember to say its not a race  ,and set your pace for each weld ,and you'll do fine.