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I am new to the tig welding process. I recently pulled several yards of mig wire off of a large spool to expose the clean wire and so as not to clog the mig gun with old oxidation junk. I saved the old wire to use as general use wire as I don't like to waste things. I was unaware that mig wire is essentially the same as tig rod (not the flux core mig wire of course) and that it could not only be used to tig with but is cheaper to buy as well. One local dealer here told me that they knew of a guy who only used only mig wire to tig with. They say he keeps all different alloys & thickness of spools above on some sort of rig or hanger and just pulls down whatever he needs for a particular job. Wow, how cool is that! I assume that I can use this old oxidized wire that I saved to tig with without too much problem because the heat from the tig torch should burn off any impurities. Is that correct? or perhaps it may cause contamination of the weld? Thanks,ArtHobbyist but love the arc.Bobcat 250Shopmaster 300DialArc 250DialArc HF-PMillermatic 180WC115aS-21EHF251D-1Max Star STLHobart HandlerLincoln 135
Reply:The rust is gonna spit back at ya and contaminate either the weld or the tungsten, methinks. You could try wiping it down first with scotchbrite, then a good solvent. Let it dry completely, fumes of anything funky can be dangerous, especially old brake parts cleaner. Acetone works, but is very flammable/ inflammable, whichever, it burns good. City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:If you wouldn't mig with dirty wire why would you tig with it.For sheet metal I keep a small roll of 0.030 E70-s2 and 4043, but if you need a smaller filler rod(aluminum) go to your LWS and get a few different sizes and ask them to split the pkg in half; and you won't have any trouble feeding the wire.Have done it don't like it.
Reply:[QUOTE=vestport;4332 the heat from the tig torch should burn off any impurities. Is that correct? or perhaps it may cause contamination of the weld? Thanks,Art[/QUOTE]those impurities do not burn off, they burn up into oxides and look like rat turds in cream cheese......what you refer to as contamination in the weld..
Reply:If you want to use the rusted wire, use it in the mig not the tig, but clean it first with scotch brite pad before running it down the torch.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Thank you for all the responses and tips. If I am that desperate I will clean some wire but otherwise I'll just use wire that is already clean or new. Also, since I haven't really used the tig before I should probably get some real tig rod to compare to feeding with a spool. I can see where the tig rod being or at least appearing more rigid would be easier to feed because you probably don't have to keep compensating for warping and bends in the wire. Tig is a very precise process and I see where wire from a spool may complicate things in general and certainly for someone just starting to tig. Just nice to know that in a pinch you could use mig wire provided that it is clean.Great! All set and again thanks for all the feedback & tips!ArtHobbyist but love the arc.Bobcat 250Shopmaster 300DialArc 250DialArc HF-PMillermatic 180WC115aS-21EHF251D-1Max Star STLHobart HandlerLincoln 135 |
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发表于 2021-8-31 23:33:44