alu tig pipe

admin

I dont do tig alot so im looking for some pointers and some tips to help make my welds look cleaner and perform better. Setup is an old miller syncro wave 250 set to 250amps ac balance at 4 using pure 1/8tung and 5356 1/8th filler wire on 3/4inch 6061 sc80 alu pipe. iseem to always be fighting my root in Attached ImagesHigh Octane Welding
Reply:heres the two pipes finished Attached ImagesHigh Octane Welding
Reply:Hello abec, real quickly, get rid of the pure tungsten. With the options that are out there for tungsten now and also with the newer(meaning inverters that don't even suggest use of pure tungsten) power sources that are so prevalent, pure tungsten isn't a real good choice. You mentioned issues with your roots, because the pure tungsten will automatically ball the direction of the arc isn't as controllable as a tungsten that will maintain it's point while being used on AC. Ceriated tungsten is a pretty decent choice for your application. Try an 1/8" Ceriated tungsten that is ground to a point and then slightly blunted(a 1/16" or so), I believe that you will notice better performance from this set-up. It allows for a more controllable arc and should make your roots easier to manage. I am sure that others will have things to add here. Good luck and best regards, Allanaevald
Reply:1/8" Filler???Try half that size 1/16"Taking more heat to melt the filler than it is to melt the material!Ohhh boy......zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:As I said(referring to others commenting), Zapster picked up on an important item right off the bat. Consider that when you are welding with a process that uses a filler rod, that the welding that takes place has to have a puddle of sufficient size to correctly melt a particular diameter of filler rod. If the filler's large then the puddle needed to melt it correctly will be large, if the filler's smaller then the puddle required to properly melt it will be smaller. Size your fillers appropriately and you will experience much less frustration with how your welding will progress. There are a few exceptions where an over-sized filler can be a benefit and one of them is when you are trying to use it as a heat-sink, of sorts, in order to help with excessive burn-through that can be problematic with some welding challenges. Good luck and best regards, Allanaevald
Reply:I actually gave ceriated tung sitting by the tig i should of used it lol i will order some smaller tig rod my work usually only has 1/8th but im sure i can get them to buy me some 1/16 thanks guys for the help i will try some more tomorrowHigh Octane Welding