On 4/30/2011 3:49 PM, Bob Spidell wrote:
> TIGs have an infinite number of possible settings; if you're not an
> expert or don't plan to get some training it will take a while to
> figure out all the settings. If you're not an expert--or can't spend
> a lot of time learning--the Miller Diversion series is nice kit. I
> got a Diversion 180 from these guys:
>
> http://www.weldingsuppliesfromioc.com/servlet/the-3391/MILLER-DIVERSION-165-AC-fdsh-DC/Detail
>
>
>
>
> With the Diversion, you set the metal type (Al or steel), and the
> approximate thickness of the material. Current is controlled by a
> rotary knob on the torch; this is a bit awkward but a pedal control is
> optional (but not convenient if you're not welding on the bench).
M'self, I much prefer a foot pedal--much easier to start an arc and
control current with just a little practice, and it leaves both hands
free to work the weld. One can likely find them with 15-20' cabling,
which pretty much eliminates the problem of having to stay close to the
welder.
>
> For frame repair you'd probably want at least 180A.
>
I doubt that one will find any plate in a modern frame much over 3/16"
thick (and 11 gauge would likely be the upper end of the norm), and 165A
would probably handle that okay. What does matter, regardless of
current output, is duty cycle. This unit is good for 150A at a 20% duty
cycle, so one had better plan on doing other things while the unit cools
off after high-current use. The other issue is the torch itself--a
gas-cooled torch is probably fine for short duty-cycle use, but, if one
is planning on doing extended runs, I'm betting that the torch will get
uncomfortably warm (I've only used water-cooled torches and never had
problems with the torch getting too warm to control with gloves on, but,
with the torch running for several minutes, I could feel the torch
getting noticeably warm).
Cheers.
--
Michael Porter
Roswell, NM
Never let anyone drive you crazy when you know it's within walking distance....
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