Re: Question about TIG welding aluminum
- From: "Terry Mayhugh" <tmayhugh@xxxxxxxxxxxxx>
- Date: Fri, 24 Feb 2006 06:35:30 GMT
Are you sure the metal you were using was not anodized?
"Dale Mosby" <dalenws@xxxxxxxxxx> wrote in message
news:pan.2006.02.24.06.13.48.121397@xxxxxxxxxxxxx
I am taking a community college class in welding. I already have
some experience with, and own gas, stick, and MIG equipment. I am
trying to learn to do TIG and to weld aluminum. This is taught at
the local high school, and I am the only person to try using their
old Miller Syncrowave 180 SD. The class gave a quick demo of
gas, stick, and MIG. I'm pretty much on my own trying to practice
with the TIG unit and just a couple practice sessions so far
trying it for both steel and aluminum. I did buy my own tungsten
for this (both thoriated and plain).
In some practice the other night I was using a couple pieces
of aluminum "C" channel from the scrap bin - no idea just what
the metal was. I did clean them with a stainless brush. I found
that I could run a reasonably good puddle for a while and then
when I would feed the rod it would ball up and act as if it was
dirty. Made a real mess. I don't think I contaminated the
tungsten, but I suppose it is possible. I did replace the
tungsten but didn't find that this immediately solved the
problem. I did then get another reasonable puddle going but
then once again encountered this problem.
Can anyone offer suggestions as to what is going on? I did
take a couple photos of the metal. They can be seen here:
http://www.archcape.com/aluminum/
Thanks for any suggestions. I'm having great fun with this
but could use some pointers.
Thanks, dale at archcape dot com
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