[TheForge] Powder Damascus

[Chuck Robinson]

Hey Mike,
Knife smiths have been developing this process for several years now.
It's not real easy to do, but the results can be quite dramatic.
I  have a nice pile of very expensive trashed billets that attest to the
long learning curve.
Chuck


----- Original Message -----
From: "Mike Spencer" <mspencer at tallships.ca>
To: <theforge at mailman.qth.net>
Sent: Thursday, December 09, 2004 4:57 PM
Subject: [TheForge] Powder Damascus


>
> Here's an interesting bit for the Damascus/pattern-welding guys:
>
> Patterned steel billets by powder metallurgy.  Stack (dribble?) two
> kinds of powder (say, a hardenable carbon steel and a hardenable
> stainless) just right in a cylinder, add pressure and heat to form a
> billet.  Forge or roll the billet.  Instant pattern welded bar stock.
>
> ['Ware line-wrap]
>
>
http://www.machinedesign.com/ASP/articleLoader.asp?catId=3&path=D%3A%5CInetp
ub%5Cwwwroot%5CMachineDesign%5Clive%5CMDSite%5CContent%5CIssue%5C10657%5C576
11%2Ehtml&strSource=/images/currentissue.jpg
>
> Or you can just go to the main site:
>
>     http://www.machinedesign.com/
>
> and navigate to the Damascus steel article in the current issue
> (18-Nov-2004).  Main site requires javascript to navigate and is a
> PITA.  The long URL above goes direct to the relevant page without js.
>
> Some impressive photos of their flats and rounds.
>
> So how do you dribble two kinds of metal powder into a pressure
> cylinder "just right"?  I wonder if this is an application of the 3D
> metallurgical printing tech developed at MIT.  I'll have to email Sam
> Allen and ask him if he knows about this.
>
> And to think, there we were, just welding chunks of solid stuff
> together a lot of times when we could have had a building full of
> automated machinery and computers to do it for us while we drank
> whiskey and picked ticks offn the dog.
>
>
> - Mike
>
> --
> Michael Spencer                  Nova Scotia, Canada       .~.
>                                                            /V\
> mspencer at tallships.ca                                     /( )\
> http://home.tallships.ca/mspencer/                        ^^-^^
>
> --
>
>
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