Correct bevel angle for 1/4" carbon steel butt weld?

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Hey folks.  For FCAW-S with Hobart .035, what's the correct bevel angle to cut for practicing horizontal butt welds with 1/4" carbon steel strips (2"x12" strips) where I have access to both sides?  And how deep should I go with the bevel cuts (e.g., 1/4 the thickness on each side, 1/3 the thickness on one side, etc.)?  I got a hold of some scrap strips to practice on. Anyway, many thanks in advance!Agape GuyEverlast Power I-MIG 200 (dual voltage)Everlast PowerArc 200 stickHarbor Freight Titanium 125 Easy FluxHypertherm Powermax 30Way too many power tools
Reply:Here you go. Attached ImagesDon’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:My test plates were made from "scrap" (prolly cut from huge I-beams, just don't remember) and I never paid any attention to this. How do you deterimine the "direction of rolling" from scrap? And what difference does it make?Last edited by wirehead; 05-19-2013 at 09:54 PM.XMT304 (school)SP125+ (home)HF 4x6 BandsawGood judgement comes from experience and much of that comes from bad judgement.
Reply:Originally Posted by wireheadMy test plates were made from "scrap" (prolly cut from huge I-beams, just don't remember) and I never paid any attention to this. How do you deterimine the "direction of rolling" from scrap? And what difference does it make?
Reply:Generally anything 3/8-inch or less in thickness is a face, and root bend. Anything over 3/8-inch in thickness is a side bend. Which is cut 3/8-inch thick. Attached ImagesDon’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Originally Posted by shortfuseRefers to the roll direction for testing.
Reply:Good info in this thread I had one of the same questions as the OP. I do have a different question that I think is on topic. The "roll direction" wouldn't that be the direction of the grain when the plate that the sample strips are cut from went through the rolling mill? The weld would be placed transverse to the "rolling direction" on the coupons? I ask because I don't know Ranger 250 thick stuffHobart Handler 140 not thick stuffthe pane and oxy setup
Reply:"The weld would be placed transverse to the "rolling direction" on the coupons?"No.  Rolling direction in this context refers to where the bead crown is oriented when the coupon is placed in the test apparatus.The placement of the arrows being ABOVE the bead indicates that the bead crown stratum is to be on the outside of the bending (rolling) arc when test is performed.Further, the arrows show that the bending is to be done along the length of the weld and NOT perpendicular to the weld.
Reply:Originally Posted by CEPHere you go.
Reply:Originally Posted by Agape GuySo is that a 45 degree bevel angle all the way through from one side?  Is that the bevel I cut?  Just clarifying.
Reply:Originally Posted by walkerweld"The weld would be placed transverse to the "rolling direction" on the coupons?"No.  Rolling direction in this context refers to where the bead crown is oriented when the coupon is placed in the test apparatus.The placement of the arrows being ABOVE the bead indicates that the bead crown stratum is to be on the outside of the bending (rolling) arc when test is performed.Further, the arrows show that the bending is to be done along the length of the weld and NOT perpendicular to the weld.
Reply:Originally Posted by KineticWeldingServicCEP thank you for the drawings
Reply:Originally Posted by CEPYes to both, but I have used 37 1/2-degree bevels also.