On Tuesday, January 3, 2017 at 12:02:34 PM UTC-5, Paul K. Dickman wrote:
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On Monday, January 2, 2017 at 1:59:24 PM UTC-5, Paul K. Dickman wrote:
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On Monday, January 2, 2017 at 11:33:56 AM UTC-5, Paul K. Dickman wrote:
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On Sunday, January 1, 2017 at 5:41:03 PM UTC-5, Cydrome Leader wrote:
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On Saturday, December 31, 2016 at 8:13:12 PM UTC-5, Cydrome Leader
wrote:
Mike Spencer wrote:

Cydrome Leader writes:

There's no question they've made a huge flange of some sort,
but
if
I
ordered 100 of them, would they vary at all? Would they even
all
be
made
of the same type of steel etc. That's where I have questions
about
cottage
type industry.

Notice when they're doing the 2nd and 3rd round of forging the
flange.
When the hammer strikes, it brings (what passes for) the set
hammer --
the block of steel on a long stick -- down flush with the lip,
never
goes too far and crushes the lip.

We never see the hammer driver but I'd say he's hot stuff, lots
of
practice. Note that it's apparently a drop hammer, no powered
stroke.
The hammer driver has to raise the tup just enough, reckoning on
the
remaining heat at any stage, to get the blow just right.

Cool stuff, great teamwork.

I think it was mentioned that's a flange for a 48" pipe. At 100
PSI
that's
90 tons of force trying to tear that thing apart. It has to be
a
sound
part and not just "close enough". Forgings still need proper
heat
treatment, and from that video maybe they just bury it in dirt.