Any creative ways of preventing sugaring?

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I weld a lot of pipe and don't want sugaring on the inside to inhibit airflow.On my setup, I don't have anything that will allow me to run argon into the pipes.Is there anything else I can use that will prevent sugaring?I don't like the idea of letting gas just flow through a pipe. I'd rather cap the ends to try and keep the shielding gas inside.
Reply:If you're tigging, cap one end, close the other slightly and stick the end of your torch in there. Hit your pedal a few times, allowing post tig gas to enter, then seal it up. Either that or buy some Sloar Flux.  Hope that helps. John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:You can use type B solar flux, or purging dams, water soluble purge paper, purging bladders.
Reply:Try not "burning thru"..If its for intercoolers and such total penetration is not needed.. ...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:Originally Posted by zapsterTry not "burning thru"..If its for intercoolers and such total penetration is not needed.. ...zap!
Reply:Originally Posted by zapsterTry not "burning thru"..If its for intercoolers and such total penetration is not needed.. ...zap!
Reply:Looks good!...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:Calculate your cubic feet.  Take your cross sectional area of the tube, 3" or whatever, divide by 12 to put it in feet, and multiply it by the length of tubing you have.  You'll have your volume in cubic feet.  Then just divide using whatever CFH is coming out of your flowmeter.  Of course, you could always stuff a cloth or temporary dam in there to make it go a lot faster.
Reply:Originally Posted by SupeCalculate your cubic feet.  Take your cross sectional area of the tube, 3" or whatever, divide by 12 to put it in feet, and multiply it by the length of tubing you have.  You'll have your volume in cubic feet.  Then just divide using whatever CFH is coming out of your flowmeter.  Of course, you could always stuff a cloth or temporary dam in there to make it go a lot faster.
Reply:Originally Posted by UnderwhereDamnit. My junior year math teacher was right. I did need to use it!
Reply:If you want to program CNC machines then you need algebra.. Back to school.. Myself..about the exhaust..If I was building Pro Stock headers then I'd be concerned about the inside..But Your not..So I would not be to worried about the inside too much..I've never seen a exhaust purged on T.V. .. We have all seen the exhaust episodes on "Trucks" "Horsepower TV"   and the likes......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:Originally Posted by SupeAbsolutely!It's all the college math you don't need.  So much for my four years of calculus
Reply:Originally Posted by UnderwhereDamn. Pre-Cal was junior year in high school for me.A lot of it has to do with me being very particular about what I'm doing. Originally I had a 4" exhaust (even had it sitting there) because I wanted the most unimpeded gas flow possible and decided for noise reasons it had to change. So now I'm just really concerned about the inner diameter. Perhaps too much.
Reply:Originally Posted by SupeCalculate your cubic feet.  Take your cross sectional area of the tube, 3" or whatever, divide by 12 to put it in feet, and multiply it by the length of tubing you have.  You'll have your volume in cubic feet.  Then just divide using whatever CFH is coming out of your flowmeter.  Of course, you could always stuff a cloth or temporary dam in there to make it go a lot faster.
Reply:I wanted to be a math major for 2 semesters.
Reply: