Fcaw vertical up 12mm plates ceramic backing

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Hi,I need information in what is the correct technique to do a vertical up weld in a 12mm plate using a V groove with ceramic backing, using 1.2mm flux core wire.What would be the correct voltage and wire settings, and also torch angles and movements.Thanks,nbarreiros
Reply:For the metric challenged, 12mm is just under 1/2", 1.2mm is about .048"  (.045") wire.What wire are you using?I point the wire up a little.....5 to 10 degrees.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Normally we use severall brands E71-T 1.2mm fcw.
Reply:I run fcaw vertical up just like I run 7018 in the same position. On half inch I would be using about 200 amps with.045 wire. Machine doesn't tell you the volts so I have no idea what they are.The difference between art and craft is the quality of the workmanship. I am an artist.
Reply:When welding vertical up, the puddle has a tendancy to sag in the middle. This is due to gravity acting on the molten weld pool.When I weld vertical and my setting are causing the bead to be convex (hump up in the middle) I can either re-adjust the machine or modifiy my technique to cause the wire to spend a little more time on the sides than in the middle. This slight weaving action can be as narrow or as wide as you like.If you are 1st starting out practicing, weld vertical fillet welds, vary your heat settings. Look at the manufacturers recommended settings and work on the lower end at 1st. If it seems to cold, turn it up slightly.After you get the feel of making consistent beads, you can try more heat.Welding a moultipass fillet weld is about bead placement. So is a groove weld. Other than a root, I feel that being able to make a good multipass fillet weld shows the skills needed for a grrove weld on a butt joint. Is there a particular thing you are having problems with ? There are so many ways to weld and techniques people use, its hard to pick a "right way" .Have a nice dayhttp://www.weldingdata.com/