"Gene Kearns" wrote in message
...
On Wed, 26 Dec 2007 21:59:43 -0800, CalifBill penned the following
well considered thoughts to the readers of rec.boats:


"Gene Kearns" wrote in message
. ..
On Wed, 26 Dec 2007 19:41:58 -0500, Eisboch penned the following well
considered thoughts to the readers of rec.boats:


"CalifBill" wrote in message
...

"Eisboch" wrote in message
...

"Chuck Gould" wrote in message
...

On Dec 26, 12:30?pm, Tim wrote:

and even though it didn't fall very far approx 5 ft,
well.....no damage done to the boat, but the nice aluminum rail that
wraps around the bow has a nice big dent in it and one of the mounts
is broken. Anybody know where I can get a reasonable repair for it?


You can have a replacement rail fabricated at any $hop where they
weld
$tainle$$ $teel. If it truly has no function, and on a 1977 cuddy
cabin- you could easily justify not spending the money to replace it.


A shop that has expertise in welding stainless is not necessary
experienced in welding aluminum.

Eisboch (who spent hours trying to weld aluminum to steel while the
welders laughed their butts off)




You can combine them. Both Kaiser Industries did it with Military
tanks
and a couple of the cookwares now attach aluminum to stainless.


Yep. But not by welding.

Eisboch


Some purveyors of cookware tout this, but I suspect it is either a
braze or a "mechanical weld" as done in forge welding.... not a true
fusion weld.

However, Al and SS *can* be welded in some circumstances, but it *is*
a bitch....
http://www.welding-advisers.com/PRAC...etterNo26.html

Some shipbuilding is done with Aluminum/Steel welds, but, again, it is
not a fusion weld.....

--

Grady-White Gulfstream, out of Oak Island, NC.

Homepage
http://pamandgene.idleplay.net/

Rec.boats at Lee Yeaton's Bayguide
http://www.thebayguide.com/rec.boats


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I would guess a spin (friction) weld on the cookware.


Problem with that scenario is that the aluminum has a melting point of
1220F and Stainless Steel about 2800F and the two molecular structures
don't play well together....

--

Grady-White Gulfstream, out of Oak Island, NC.

Homepage
http://pamandgene.idleplay.net/

Rec.boats at Lee Yeaton's Bayguide
http://www.thebayguide.com/rec.boats


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But Stainless galls easily, and the aluminum may melt into the voids created
in the stainless, making for a strong bond.