[TheForge] Steam hammers

Tue Jan 13 22:47:03 2004

        Bob, Sorry to hear your not still forging gear blanks and hooks, but
it's nice you still have some work and can tinker with the smithing on a
continued basis.
        If you don't mind writing, what was the material you forged gear
blanks out of?  During forging what did you use to true the ring and use as
a guage for the finish go/no go demensions they could work with.  Was it
some kind of caliper?
        Did you ever hear what the machinists had to do with it to remove
the scale to start truing to cut the gear teeth?  Just curious about larger
jobs and how they are done.

       What material was the hooks made of?

    Thanks, hope to hear more from you.

Ralph
----- Original Message -----
From: "Bob Cook" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 13, 2004 5:22 PM
Subject: [TheForge] Steam hammers


>
>
> Ralph, We used to do a lot of rough forgings that were than machined down
to size. We would turn 8'' square stock into 6" round and then have&nbsp;it
sawn to length. We would then punch that stock and ring out on a mandrel to
make blanks for gears. Finished size might be 24" O.D. and an inside dia. of
20" and maybe 6" high.
>
>       We also used to forge 10" and 12" sq. stock down to various shapes
ie: 8"x 4" that were than machined for shear blades in one of the finishing
mills. They could have machined these right from the start but they wanted
the material forged to add some toughness and strength.
>      One of my favourites was forging a 20 ton hook. We started with 6"
sq. cut 24" long (approx. 240 lbs) and took about 7 or 8 heats to forge to
shape. We then bent it on a jig that was set on a big platen table, using
hydraulic rams and gears. The hook was than stamped under the hammer to
create the final dimensions.
>      All of the work was done, in house, for a steel plant. (Stelco
Steel). Unfortunately, they shut us down and tore down the building in Mar.
2002 .I am still employed with them, 28 yrs service, and hope to take my
pension after completing 30 yrs. In the meantime, I now do demos and do
smithing in my garage, albeit, on a much smaller scale.
>      I must add that I really enjoy the banter and the info found on this
list and hope to post more often in the future.
> Bob Cook [email protected]
>
>
>
>
>
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