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

[Jerry Frost]

The name explains the reason.

TIG is Tungsten and Inert Gas. Burning oil, grease and 
paint aren't very inert and do all kinds of bad things 
to the shielding gas, plasma column and weldment.

Same story for MIG.

Welding electrodes like 6011 and 6013 are designed for 
field welding (amongst other things) and are pretty 
insensitive to dirt and moisture.

A drop of light clean oil in a forge weld scavenges oxy 
by creating a very reducing environment between the 
pieces being joined.

Frosty (defender of dead horses)
-------------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.

http://www.artmetalradio.com/

From: "Peter Fels And Phoebe Palmer" 
<artgawk at thegrid.net>


> 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
>
>