I'll reply to all the messages in one....
----- Original Message -----
From: "Albaugh, Neil" <albaugh_neil@ti.com>
> Aron;
> I wonder if your tungsten electrode might be
> contaminated.
That's one reason I increased the post flow time, but the tungsten does seem
good either way.
----- Original Message -----
From: <LGMCAFEE@aol.com>
> Yes, you might be getting contamination from the inside but not because of
> shielding problems. Tig doesn't like scale or grease and the inside needs to
>be
> clean also. You can make an x-ray quality weld on carbon steel without a purge
> on the inside of tubing and pipe, now stainless is another story.
> Larry Mac
Good, I'll not worry about that then. This tubing is new, bright and shiny on
both sides. I gave it
a good wipe with 'paint prep' on the outside. Maybe I'll pour a little on the
inside too, but it
does look clean in there.
----- Original Message -----
From: "Joe Timney" <joetimney@dol.net>
> Aron,
>
> Are you using S70-6 rod? The dash 6 rod is high is manganese and silicon for
>welding dirty, rusty
or
> poor metal. Gas should be 16/20 on the flow meter. Do you have the tungsten
>pointed??? What size
cup
> are you using???
>
> joe
I don't know what S70-6 rod is, sounds high falutin'! ;o)
I really don't remember what this rod is, I bought a ton years ago, and keep it
in one of those
stick welder drying ovens. It's worked well before, on other things (famous
last words). This tubing
is brand spankin' new, so no problems with rust or scale. Tungsten is a dull
point, a 'truncated
cone' to get technical. The size cup, 'medium', as I'm too lazy to go look, but
I'm game to try a
bigger cup if the problem persists.
For me, the bottom line is the welds I kept are 'good enough', they're in
non-critical areas. But,
I'm getting to the important welds soon, so that's where the Aircraft Spruce
tubing will come in.
We'll see when that comes in...
-Aron-
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