From: Jay (dagobert@ix.netcom.com)
Date: Mon Apr 22 2002 - 07:48:19 PDT
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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This archive was generated by hypermail 2.1.4 : Tue May 21 2002 - 23:25:34 PDT