|
|
I am still on my sheet metal welding adverture. Over the years, I have had three guns to go with my Millermatic 130xp welder. I today noticed that after I cut the 0.023 wire for the correct stickout, I can move the wire in and out of the contact tip about 0.315 inches. This seems like a lot. This is with a Profax gun which is 10 feet in length. The liner in the gun is for wire that is 0.030' to 0.035". I am using 0.023" wire for the sheet metal application. The contact tip is for 0.023" wire. Yes, I know that the components are mis-matched and need to change something. If I push the wire into the tip after cutting, then the wire at the tip will move as soon as the trigger on the gun is activated. If I pulled the wire out of the tip so that it is tight after cutting, then the wire at the tip does not move until after the tigger on the gun is activated several times. The wire is not slipping at the "drive roll." I believe that the mis-match of the liner and wire has created a condition were there is too much room between the inside of the liner and the outside of the wire. The wire is most likely takes on a "s" shape rather than being straight within the gun before it can move at the tip. So I need to decide what to change. I could have a gun that is only used for 0.023" wire or perhaps I should change liners as needed. I don't know if it makes sense to try to install the same liner in a gun several times and hope that it will work.The other guns that I have are the original Miller gun that has 10 A on the side and a gun by Radnor. I replaced the original Miller gun because I had replaced the liner about 5 times and thought a different gun might be better. As I recall, the cost of the liner for the Miller gun I have was about 75% the cost for the whole gun. Any advice on which way I might go and perhaps a different gun is appreciated. Maybe a new and improved Miller gun would be a consideration.
Reply:Hello If it were me and i was welding mainly thin sheet then a 023 liner would make the most sense.put a new 035/45 in your old miller gun for doing the thicker steel FelonCaution lurker lives here" hmmm That is serious,pass the ganja and pick up a 24 of MGD"
Reply:Is it giving you feeding problems during the weld? If no, leave it alone. If yes, then change the liner to match the wire size.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Your description of the "s" effect sound like what is going on. Then, when you pull the trigger, the wire straightens out and you get a rush of wire. I agree with Felon. Set one up for the sheet metal and thinner wire, then set the other one up for the 035+
Reply:With a 130A welder he doesn't need a .035-.045 liner. The machine is going to be maxed out trying to run .030 solid. Only reason for .035 would be for running fluxcore.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc. |
|