Hey all!I'm a newbie here on the forum and within the welding world. I'm 100% self taught and would describe my abilities as amateur hobbyist on the best of days. Most of my background is in stick, but I recently purchased a small 110v Eastwood MIG 135 for some body work on a jeep restoration project. I've been doing a ton of practice at the bench with similar gauge material as what I'll be repairing on the actual jeep. I'm focusing right now on plug welds and in the horizontal position they come out quite well, but when I put the test material in the jig to practice in the overhead position I get beads of molten metal running down the filler wire and accumulating in the nozzle. These welds also look like garbage, and aren't filled out very well. I've done some reading online and it appears that overhead Mig should be performed with roughly the same settings as those on the horizontal position, but I can't seem to make it work. I'm working with 20ga steel, running 0.025 solid wire, and 75/25 @ about 20CFH. I can't tell you the voltage and wire speed settings because with this machine they're just assigned arbitrary numbers 1-10 and letters A-G.I'm excited to be part of this community and I'd like to thank everyone in advance for the help.
Reply:Try lowering your wire speed some. On a fillet weld the settings should be roughly the same as horizontal. Plug weld is a different story.
Reply:is the wire/weld puddle adhering at all to the test piece you are setting up overhead? Are you burning through? More details are needed to avoid guessing.
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Reply:Straight up and down overhead runs very hot. Try bursting the trigger 2 to 3 times. And the trigger longer on each pull. It cools for a split sec and you can built it up. I wouldn't think a sheet metal plug would be difficult in the straight up position. Hold a tight arc and I think it will be piece of cake. We never change the settings on out machines and run all positions and thicknesses. Make sure you're tip is good too. Straight up wire angle is easy to get a lot of berrys in the cup if torch angle or stick out is wrong.
Reply:Thanks all for the replies. I have been super busy with house projects lately and haven't had a chance to try out any of these suggestions yet. Hopefully tomorrow. The fact that I could watch the balls of molten metal run down the wire leads me to believe that my stick out was in fact too long. I'll have to make up a couple more test pieces and play with the wire speed and stick out. Is it safe to assume that my voltage is correct since I wasn't burning though? I also cut apart a few of the welds I did in the horizontal position and they seemed to have good fusion with the base metal. I'm definitely still trying to workout the relationship between voltage and wire speed. Sent from my T671O using Tapatalk
发表于 2022-3-18 15:51:23
