Need Advice on a job weld test! Mig 29V 550IPM

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So I graduated tws last Friday and have an opportunity to test for a trailer manufacturer. They give me 4 tests. All T plates. One 2F One 3F one 4F and one 2F with three stacked beads. They are all visuals. The weld procedure sheet states I should run my heat from 29-30 and wire speed from 500-600IPM. I did some practice runs on the basic 2F and honestly it didn't go amazing. I have to push all beads and find the puddle hard to read what looks like undercut isn't undercut. Any tips are appreciated. The test is Tuesday May 13th
Reply:The beads are to be 5/16"s to 3/8"s in since looking for uniformity
Reply:i work for a trailer manufacturer in pa  we run everything fast and hot too (production) , i do a whip technique so i dont get undercut or blow threw and it keeps the bead nice and uniform
Reply:pictures would be appreciated, I'm sure.   1st on WeldingWeb to have a scrolling sig! HTP Invertig 400HTP Invertig 221HTP ProPulse 300HTP ProPulse 200 x2HTP ProPulse 220MTSHTP Inverarc 200TLP HTP Microcut 875SC
Reply:Originally Posted by puty72i work for a trailer manufacturer in pa  we run everything fast and hot too (production) , i do a whip technique so i dont get undercut or blow threw and it keeps the bead nice and uniform
Reply:Am I right in assuming that it's spray arc over short circuit?
Reply:I need some advice guys, the plate is 1/2"
Reply:So I talked to an instructor and the wps states it's running .045 mig wire at 29-30 amps and 500-600 wire speed. At the school all we have is .035 mig wire, I was thinking of running it at 22.5 amps and 400 wire speed does that sound equivalent?
Reply:I am sure you mean volts not amps.  I do like puty72.  The reasoning is that the puddle is so hot and difficult that you can gain better control by whipping.  You create a longer egg shaped puddle that will not roll out of where you want it.  Your actual speed along the work also has to be fast.  With .035 you will need an argon mix over 80 % and 29 volts with your wire speed faster than the 045.   I would try over 600 if your rolls will go that fast.  22.5 volts is a horse of a different colour and will not mimic spray transfer.  You are at the top end of short circuit transfer.
Reply:I run spray transfer on a daily basis with .035 at about 30v and 25-30 cfh and tri mix gas (I have no clue on IPM, old machines so no fancy digital readout) I will say you will have a high travel speed but I never use a whip technique you should end up with a bead that resembles a dual shield bead when done correctly and very little spatter. You are laying the wire at a high deposition to get good penetration hence the required procedures. I would use 1\16 dual shield if I had a choice but that's just me and its not my business.