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I'm trying to weld tabs on some 3/16"x 2'' angle iron tabs on 3" square purlins. They are 4" long. The horizontal welds look awesome and the vertical closest to me looks decent. The vertical on the other side looks like crap. I have to lean over the beams to do the far side and I can't get in a comfortable position. I'm using Hobart 7018 ac. every time I start the far side the flux falls off and the problems arise from there. Why does the flux only fall off on that weld and not the others. Is there another rod that I might have better luck with?
Reply:I'm guessing when you lean over the beam the rod is pointing down. I have to have the rod pointing up like you probably do when welding the near side. W/ 7018 , for me anyway, pointing the rod up lets me build the puddle and maintain it while welding up. Maybe others here have a different style. MikeOl' Stonebreaker "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:Hey AR, i agree with mla2ofus. Keep your rod pointed up. What amperage are you running? I just finished a box of hobart ac7018, and i ran at around 110 amp on vert and 125 on my flats. Was on 3/16 thick plate. It ran pretty nice. Forgot to mention my machine is ac only. It is a bit more touchy than a dc machine, but not too bad. Now i am using washington alloy regular 7018 with great results.. You'll get her..Last edited by MISSING LINK; 03-13-2014 at 10:48 PM.
Reply:First, scrap the hobart 7018 AC rods, for me they run great on DC but don't run worth the damn on AC. Go buy some Lincoln 7018 AC rods they seem to run much better for me on AC and I have been welding since 1979.Also, are you using AC or DC and are you welding vertical up or down? Down is good on thin metal and up is much better for penetration. In most situations you will have to turn down the amps going up. If your using 7018 AC rods on AC you will probably need more amps to get a good looking weld.Make sure you grind the mill scale and rust off the metal you will be welding, 7018 rods need good clean metal for welding. The preparation work is 75 percent of a good weld especially with 7018.Pics would be good for us to help you.
Reply:im going to concur with kct there. AC is **** for doing 7018~1987 Lincoln Sa-200~~1978 Miller Big 40~ (restored) ~and everything inbetween~
Reply:Also would say give the Lincoln AC7018 a go. I had some vintage 1970's Hobart 6013 from a sealed container it ran wonderful. Then went and bought some new Hobart 6013, ran like crap. Find a DC machine if you can,, but if not, don't be afraid of AC, it will weld just fine..good luckTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:Are you knocking the flux off the rod when trying to strike an arc?JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:Bend the rod itself to help you get the right angle of the dangle when you are leaning over.
Reply:Ok guys here is what I did yesterday to get by. I started using the heat the rod trick and with great success. I also started skipping the weld on the far side and re setting my scaffold on that side and welding them in comfort. It made a huge difference although the extra setup takes time. My phone doesn't take pics. I plan to buy some of that Lincoln ac 7018 next time I get a chance. |
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发表于 2021-8-31 23:17:50