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I have a 110v Lincoln MIG welder. The chart says to set the power to the maximum to weld 16 gauge material but that seems too high when I weld. Running a bead on 16ga, the bead is huge and I get the back side showing a bit of a lump from what seems like too much penetration. I certainly cannot use that setting to weld up an 90 degree edge joint.So I started turning the settings down and testing it and I end up on B (settings range from A to E) to avoid huge amounts of overflow.My questions are these:* When the chart says 16 ga, is there a particular type of joint in mind? And outside corner has very different heat dissipation from a T or overlap joint.* Does elevation have an effect on MIG welding? I am working at 7000 feet. I didn't seem to have a problem using a machine in a welding class at the college 3000 feet lower down the mountain.The welds look fine except that I am just OK at keeping my hand steady. I can see plenty of penetration on the back side of all of my welds.I am using 75/25 gas shielding with a Lincoln 125HD.Thanks.Dave
Reply:Elevation should not make a difference. Post up some pics with your settings for the welds. U will get plenty of advice then.Tiger Sales: AHP Distributor www.tigersalesco.comAHP200x; AHP 160ST; MM350P, Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma. For Sale: Cobra Mig 250 w/ Push-pull gun. Lincoln Wirematic 250
Reply:Hello and welcome. There are a number of things that effect the weld profile beside just your voltage ( heat) setting. Whether you push or pull the weld, how much stick out you are using, any motion you are using ( cursive "e", "z", "C" motion, straight stringer etc. ), travel speed, gun angle, wire size, gas type... just to name a few.Many times newer welders are changing one or more of these without even knowing it.As mentioned picts would help along with as much info as possible. For example you didn't mention what wire size or if you are pushing or dragging the weld. With this info chance are we might be able to point you in the right direction..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:I'll take some picks when I get home tonight if I can.I am pushing. I have about 1/4" stick out but I've been varying ot to see what distances make a difference. Wire is copper .025 L-56 from Lincoln. It came with the conversion kit for adding the Argon/C02. I am using 75/25 at about 25 cfm or cfh or whatever.The beads are smooth with lots of penetration. If this had been a case of a crappy looking bad penetration welds then I would know the power and feed settings are too low. This is the case wherethe recommended settings cause me to get a huge bead and too much penetration making beads on 16ga cold rolled mild steel sheets.I was using a 110v system in welding class (Welding for art 2 that I've taken three times just to make more stuff) and the settings seemed right on. It was also a Lincoln system that was similar but not the same. The Material was exactly the same.I guess that pictures will make all of the difference. I'll try filling a small sheet with beads at different settings and take a shot of the whole thing.Dave
Reply:The elevation have effects with the machine welder, because at high elevations you have less air density, so the welder fan pushes less air to cool the unit.For example, this is what happens with the standard electrical motors, I know by my own experience but at higher elevations than you are.Mauricio
Reply:I've welded w/ my MM175 at 1800 ft and here at 5800 ft and can't see/tell any difference. 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 |
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发表于 2021-8-31 23:00:09