[TheForge] Bedtime reading

[David E. Smucker]

Andy,  You may already know this but the use of round to oval to round to 
oval etc. etc. has been the standard method of hot rolling rounds for may 
years.  The older mills used to use guides to rotate the rod 90 degrees 
between each pass or mill stand.  New mills are called "no twist" because 
the rolls are arranged 90 degrees from each other.  I worked on a mill in 
the 70's that had been built before WWII that started with a 6 inch square 
and ended with 3/8 inch diameter round.  It had 22 stands, that is it made 
22 reductions.  Below the 3/8 dia. round the material went to drawing dies 
to make wire.  The design of the rolling passes and the shape of the rolls 
used to be an "art", now it is done with math and computers.  I never did 
either, but work rather on the mill hardware at the time.

Dave Smucker
----- Original Message ----- 
From: "Andrew Vida" <osan at netlabs.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>; 
<blacksmiths at yahoogroups.com>
Sent: Thursday, February 10, 2005 10:38 AM
Subject: [TheForge] Bedtime reading


>
> http://db1.wdc-jp.com/isij/pdf/200207/is420726.pdf
>
> New technique for rolling round to oval transitions in metal.  Very 
> technical and dry, but some folks love this sort of thing.
>
> Just another tidbit I ran into in my quest for extra information on files. 
> Oh, and I guess I am indeed cursed with this because I had a dream about 
> filing last night.
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