[TheForge] I don't get it...babble OT

[Bob Ehrenberger]

You got me, I was just throwing out ideas.  I don't have a TIG, I have
watched one in use once. I try to avoid situations where anyone has to
depend on my welding.  I can stick stuff together for my own use but not
pretty and not certified.  Most of the time I use 6011 right through rust
oil and paint as long as there is enough clean metal to get a ground and
strike an arc.

Good luck with the roof.  I had to leave the shop today when our washing
machine died in the middle of laundry.  Not real crazy about appliance
repair, but it's better than roofing.

Robert Ehrenberger
Shelbyville, Mo.
eforge at centurytel.net


----- Original Message ----- 
From: "Peter Fels And Phoebe Palmer" <artgawk at thegrid.net>
To: "Bob Ehrenberger" <eforge at centurytel.net>; "Sponsored by ABANA"
<theforge at mailman.qth.net>
Sent: Monday, December 18, 2006 8:27 PM
Subject: Re: [TheForge] I don't get it...babble OT


Uhhh, Just ignore this please
Just to prod a dead horse a few more times....
I'd assumed that the speed of heating with the TIG couldn't be
That abrupt ,or high carbon and/or alloys would crack  on both
sides of the weld bead.
  There is some considerable amount of time for most of that oily
material, and even low temperature metals, to fume off and be
blown away by the gas flow. It's hot, it's shielded and it's
agitated.
How can the tiny fraction of remaining oil be enough to cause
porosity?
I dunno...but it seems to be the case.
I'd imagined that the TIG .with it's searing actinic plasma and
enveloping shielding gas, would be partly immune to those petty
considerations. Why's TIG so fussy?
Or do i still have technical problems?
Or am i simply incompetent?
Why ask when i probably know already?
Why ask when these aren't fruitful question?
Useless fruit of the mating of the keyboard and cup.
See, not one hammer has fallen.
Spent the day on the old rusty-pipe scaffold patching the"
temporary tar paper" on the shop exterior....pf



Bob Ehrenberger wrote:
>> Date: Mon, 18 Dec 2006 08:30:44 -0500
>> From: "Bruce Freeman" <FREEMAB at pt.fdah.com>
>> Subject: RE: [TheForge] I don't get it...
>>
>> At forge-welding temperature, oil isn't oil anymore.  It's just another
>> source of carbon and hydrogen.
>>
>> Electric welds don't heat the metal generally or for as long, so grease
>> may perhaps remain grease in a TIG weld.  Just speculation.
>>
>> Bruce
>> NJ
>
> Maybe the problem is that the oil adds carbon to the weld and changes the
> composition of the material making it more brittle and creating a bad
weld.
>
> Robert Ehrenberger
> Shelbyville, Mo.
> eforge at centurytel.net
>
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