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Streetracing.co.za • View topic - How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
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 Post subject: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Fri Jul 08, 2016 4:15 pm 
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2 Bar BOOST!
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Joined: Sun Jan 10, 2010 11:03 pm
Posts: 2488
Location: The Flats
Slms gents

Decided to share for those who want to try so they don't have to do all the google work.
Don't roast me..I'm a complete noob, everything I learned from the interweb and this forum.
No real guidance and many a time neglected or forgot the advice I read. I know here is guys
here that does this for a living. Please don't roast me :laughinghard:

So here it goes.

I found welding without filler is way easier.
Most important parts when welding pipe especially if you want to weld without filler is

1. Straight true cuts
2. Back-purging the pipe with argon to prevent "cornflakes"
3.1 Weld low(amps) and slow with a steady hand . I use between 50 and 60 amps
3.2 Try setting up the work piece in a way so you can prop you hand on it and make a
long as possible pass. I'm still to do a full single pass on pipe :cry:

Most of the work is prep, alot of it. k@k annoying to deal with burrs. I cut with the usual cutoff saw
and use a file to deal with the burrs and then clean the areas with acetone before tacking.
I have a ghetto back-purge that cost R200 in Needle valve, fittings and T. Not ideal but works.

Cut and file


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Tack . Almost zero gap

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Ghetto back purge

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Reason for purging

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Weld



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A pipe I quickly welded half purged and no purge and ran a brush on it


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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Mon Jul 11, 2016 11:54 am 
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rookie
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Brilliant thx for sharing :) .Will the same rules apply for mig .

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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Mon Jul 11, 2016 12:10 pm 
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I dont know sorry :lol: Never used mig before

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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Mon Jul 11, 2016 9:28 pm 
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0.5 bar boost
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Sorry but what is purge? Lol


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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Mon Jul 11, 2016 10:38 pm 
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When you run shielding gas into the pipe to protect the inside of the weld :thumb: Applies only to stainless

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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Tue Jul 12, 2016 2:37 pm 
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Purge means to take something out, Argon is heavier than oxygen, so if you fill the pipe it'll push out all the oxygen and protect the weld on the inside.

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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Thu Jan 26, 2017 2:07 pm 
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My new toy :mrgreen: Collecting my bi-metal blade tomorrow from FirstCut



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 Post subject: Re: How to : Tig Welding Stainless pipe. By a NOOB for NOOBS
PostPosted: Fri Jan 27, 2017 9:40 pm 
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...


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