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Welding, upside down....
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Posted by Billy NY on April 03, 2006 at 18:54:31 from (205.188.117.14):
What is the deal when you need to weld out of position, looking up at the work ? I can run 7018 all day long in position, looking down at the work, sometimes changing my amperage depending on what I am doing, steel thickness and the size of the electrode I am using. I will usually dial myself in on a piece of scrap prior to doing the actual work, and have really improved my weld profiles since I first started welding a few years ago. I ran a few passes this afternoon, and they really came out nice, don't do much except repairs and some fabricating on occasion, and have a good working knowlege on the procedures to make structural welds, but still an amateur. On this F-600 I'm reinforcing the frame on, where it was lengthened, the top part of the C-channel, flange apparently was never welded, where the c-channel extension piece was added, although the vertical web was welded substantially, and the bottom flange was plated over the joint, where you can see it looking down. When I exposed the upper flange, by hacking through the dump body frame, I saw what looks like a crack,or a joint, so I ground it clean, "vee'd" out the area, made 2 passes in the "V", last one with the heat up at 140 amps, using 7018 5/16" dia., and one on either side of that, I burned through one spot, but built it up, ground flat and the last pass went over it. Good penetration, probably why I burned through a thin spot. Looking under the flange from the inside you can still see what looks like a crack and I'm thinking a nice bead would really finish it off. I've just never been able to get a good profile working upside down. I'm thinking, keep the heat up and the puddle flat,it won't fall out like stalagtites or mites (which ever fits here LOL ) like what usually happens. Not sure and have never mastered this, I have no problem at all making a good convex fillet weld profile with 7018, in position, with this '00 Miller Trailblazer NT 251.
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