[TheForge] Hydraulic Press

[peter fels]

I'd add that 2 of the 3 100 ton hydr presses i've seen doing hot work at full capacity,
distorted alarmingly under load. Those 2 were home made by competent smiths.
Which brings me to pose a problem .
Hydraulic presses are by nature slow. Under pressure, the dies suck the heat out of hot work fast.
How does one go about either reducing the speed of heat drain or increasing the speed of die travel under load?
A stainless or titanium die set might make a bit of difference.
Would a large accumulator work to speed up the dies?
Other solutions?

On Mar 19, 2011, at 6:56 AM, John Allen wrote:

> Talking with my engineer buddy for the nuclear plant. He told me before that
> if you build a header for a door, if you double the width of the beam, you
> increase the strength by 10%. If you double the height (in 1 piece of
> course) you gain 100% more strength.
> 
> Square / Rec Tubing is hands down the strongest steel out there. The problem
> with it is workability. You don't build a skyscraper out of tubing because
> you can't bolt to it, can't add sections easily, it is bulky and the cost is
> higher to make then I beams. Now pertaining that to your frame, you would
> need to have 6x6 x1/2" walls, but now they are 6" wide, you can use a beam
> with similar strength and 8" tall and 5" wide. The best and worst thing with
> commercially made stuff is that they already figure out what materials best
> to use. Why.... because if they made things with what they want to make them
> out of, then the competitors will use what sells by price versus what is
> right.
> 
> If you buy an apple from your local farmer for  50 cents and the grocery
> store for 48 cents, everything is the same since they are both big, juicy,
> and red right? Well that one from the store could be from South America and
> was picked early to ripen on the truck up here, and sprayed with chemicals
> that the US has banned. Well, that just says never take any shortcuts in
> especially things that could go wrong.
> 
> -- 
> John Allen
> Country Metals, LLC
> (856) 542-4316 (cell)
> (856) 504-0087 (fax)
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