mig welding test [aws standards]

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If a company wants to give you a welding test to the aws standards,what will be on this test??? I know its just mig, so what do you all think will be on their  weld test??  Kinda walk me through what to expect or any advise would help big..the welds will be x-ray i do know....i'm all ears
Reply:My wire cert is in self shielded fluxcore (D1.3), not solid wire and gas, but I would imagine the tests to be similar enough.  I did 2 positions, 3G-down and 4G.  Both were on 16 ga galvanized steel, square groove butt joints with a gap of about 1/32.  Your mig test will be on non-coated mild steel, most likely.  Visual test was for full penetration, full fill, no excessive fill, no over penetration, no voids.  Bend tests were both face and root, full 180 degree bends.  X-Ray was for no voids or inclusions.  Wire was .035 E71T-GS.  Your wire will most likely be ER70S-6.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:if you could be a bit more specific you might be able to narrow the test down better. aws standards for mig is just not enough info. this could be stainless, aluminun, steel, sheet, structural etc. if youre not sure maybe some info on what type of product and metal this company deals in. the list goes on and on if you dont have that info.
Reply:AWS D1.3 is the light gauge code book, aka "Structural Welding Code - Sheet Steel", for steels thinner than 1/8 in. thick, [3 mm]. The other common book is the D1.1 "Structural Welding Code - Steel", unlimited thickness, and testing positions follow a priority counting upward 1-4 for plate and 1-6 for pipe, but that is all I can say for pipe.The code books go on and on, AWS D1.6 Structural Welding Code - Stainless Steel, D1.2 for Aluminum, and one for Rebar, one for Bridges, and a Seismic Supplement, another for Titanium, etc., etc., etc. These are only AWS codes, to say that you will be tested for certs, just depends on which certs are appropriate.Just do your best, if you are welding on anything steel, thicker than 3/8 in., do yourself a favor and preheat the steel. 150 degrees is just right! 18.2 volts and 225 IPM, got me through a one inch thick test plate with GMAW and ER70S6 pumping 75/25 at 35 CFH. 3G uphill vee groove butt joint w/45 degree included angle, 1/8 in. gap, and no landing (feathered) including a 1/4 in. steel backing bar, same joint in the 4G position.Here is an accurate print of the test plates we do in L.A. for structural unlimited thickness certs.http://www.nattesting.com/test_plate_unlim.htmLast edited by tanglediver; 06-27-2009 at 02:04 AM.City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:tanglediver did you weave that test plate? if so how many welds were across the face on the cover?
Reply:No, weaves were not allowed on the face. I had 4 to 7 stringers across.City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:cool, they allowed weaves up until the point of the cover though?
Reply:Technically, I want to say it was up to the weldor, but it has been a few years now. The problem with weaves is the high risk of slag entrapment. Even mig produces silicon islands that will destroy a test bends integrity. Most structural welding is done these days using self - shielded wires and you can bet your boots that a weave made with fluxcored wire will trap slag! City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:Originally Posted by tanglediver shielded wires and you can bet your boots that a weave made with fluxcored wire will trap slag!
Reply:ive seen several weaves pass destructive and nondestructive tests. in fact i used a weave on a cert test years ago that was 1 1/4" wide with a 7018. a bit wide if you ask me but thats what the procedure called for. what it really comes down to is the skill of the person squirting that weld in the joint. i am going to take a picture on monday of this test plate we got from a guy who welds BRIDGES for a living. i have never seen a weld quite like this ever. it is so ugly it could be a modern art masterpiece! it was welded with a weave bead technique. im a firm believer that if you cant weave, run stringers!