Test Welds on my Lincoln 175 (Photos)

admin

I ran a few welds today on my new Lincoln 175 Mig.  I am welding 1/8 mild steel and I set up the welder per Lincoln's chart with a voltage of E and a wire feed speed of 7 with gas.   The weld on the right was done with the settings above.  Although the sound did not sond correct.  Kind of loud pops not real smooth like my 135 Lincoln on .083 mild steel.  But the weld  looks great.  The weld on the left is a wire speed of 10 which did not pop and crack as much and sounded smoother bu teh weld it not as nice..My questions is usually I always have to slow the wire feed down about a 1/2 from Lincolns specs.  Why would it sound better with more wire?  Is the sound a lot different because it is on 220V -vs- my 135 on 110?  I tried welding on D voltage and it souned better but the weld looked colder.Does anyone have a audio file of a 220v Mig on some 1/8 or thicker material?Also when I stop welding the weld seems to be slopped at the end.  How to I prevent that?  I did not notice that on my 135 Mig.Thanks in advance!Mike Attached Images
Reply:BTTTOld post i knowI have a Lincoln 175 welder - I too have to drop my settings alot lower than what they recommendIs this standard for these machines ?L
Reply:The setup chart got you in the ballpark, which is what it was meant to do. Depending on gas type, wire brand and class, you still need to tune it. So you had too short an arc length, and it was splashing in drip transfer mode. You slowed the wire speed and got it closer to a spray transfer but did not quite get there. Really you just need to up or slow your wire speed until you get the arc length that works best for your combinations. Could be your liner is new, or your contact tip size is tight too, or just right.I learned in school many moons ago that arc setting is you coarse adjustment, and wire speed is your fine adjustment. Heaven help the poor fools that have migs without setup charts under the hood.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.