From: kuhrick (kuhrick@comcast.net)
Date: Mon Apr 22 2002 - 07:57:19 PDT
tafa makes the same thing butt the air motor that pull the wire is in
the hand held gun
i have used them
two wires come out arc and air makes the little weld barrys go splat and
stick real good
my ex boss would get mad every time i sayed it that way
At 09:48 AM 4/22/02 -0500, Jay wrote:
>As far as putting aluminum coating on steel, I'm working with a guy who
>builds an arc spray welder that can do that and a lot more. It takes a
>twin wire feed and uses the wire tips to make an arc, and then basically
>uses a plasma cutter-type arrangement to spray the molten metal onto a
>part. It can be used for repairing spun bearing damage on axles,
>rebuilding worn metal damage, zinc-coating steel to prevent it from
>rusting, filling in rust or bullet perforation damage without having to
>weld in patch panels, create low-cost production quality molds for plastic
>parts or seat foam, and a LOT of other uses, both for restoration and
>industrial. It can spray aluminum, zinc, steel, nickel, copper, etc. and
>will bond to a HUGE variety of materials. I can see where someone either
>running a restoration shop or a museum shop would find one of these to be
>worth its weight in gold when working with something that replacements for
>worn-out parts just aren't available any more. The complete set-up runs
>about $7,000 with the power supply. If anyone is interested in getting
>more information about one of these, please e-mail me off-list at
>dagobert@ix.netcom.com or call me at (615) 596-7217 and I can send you
>some more information, and perhaps arrange a demo by the manufactuer.
>
>Jay Travis
>
>Jim Winne wrote:
>
>>Hi Jarrett and group;
>>
>>If you want to minimize the galvanic action between active metals you can
>>put a stainless washer between the two. This is done
>>when making a ground connection to something like a radio tower that is
>>zinc coated. The oxides don't build up nearly as badly
>>and the ground cable (copper) maintains a good conductive connection.
>>The worst combination has got to be brass and Aluminum.
>>They are guaranteed to corrode instantly.
>>
>>To my knowlege, you can't weld steel and aluminum. However, they do put
>>aluminum coatings on steel (aluminized mufflers come
>>to mind). It is probably some chemical process like painting.
>>
>>best of luck,
>>Jim (KB4IVH)
>>MVPA #17216
>>
>>
>>At 20:50 04/19/2002 -0700, Jarrett Redd wrote:
>>
>>>Hi guys... What's the word on bolting dissimilar metals together? I know
>>>copper and steel don't like each other much. What about aluminum and
>>>steel? I
>>>have some steel brackets to bolt onto the aluminum body of my M998.
>>>Is this
>>>going to be a problem? They are both painted, but I don't want a
>>>galvanic/welding/oxidation response where the bolts pass through. Do I
>>>need to
>>>insulate the bolts? What about welding aluminum and steel? Other than
>>>being a
>>>bit tricky to balance the heat input, any longer term corrosion/etc effects?
>>>Thanks much...
>>>
>>>--
>>>Jarrett L. Redd
>>>'86 M998
>>>
>>>
>>>=====
>>>Jarrett L. Redd (K9HMV)
>>>
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>>
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>
>
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