Talk:Hydraulic press

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Technology

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Why does this say it is called the Bramah press after Pascal? Does anybody else notice that these two names are not the same? Why is no explanation given? Mike 14:49, 31 January 2007 (UTC)[reply]

Hydraulic force increase diagram needs to be replaced

There are two problems with this diagram. First, the equation is incorrect (or misleading). The diagram appears to say that F1=F2*(A2/A1). In fact, the forces are equal, with F1=F2. Additionally, the figure caption deepens this misconception by stating "Hydraulic force increase". It should read "Hydraulic pressure increase", with the equation reading "p1=p2*(A2/A1)". Danielhogg (talk) 14:46, 26 October 2017 (UTC)[reply]

F1 in the opposite direction F2

Forces are directed opposite to each other. If F1 is pushed into the piston cylinder, the pressure on the body F2 of the cylinder! — Preceding unsigned comment added by Bluegene (talk • contribs) 17:09, 25 March 2016 (UTC)[reply]

History

This page lacks a history section. Joseph Whitworth was probably the first to make a viable hydraulic forging press, but others were trying to make them at about the same time, eg Nasmyth, in the 1860s. Someone more knowledgeable that I could add such a section. FreeFlow99 (talk) 09:46, 29 August 2016 (UTC)[reply]

Forging is relatively minor for hydraulics - at least in the Victorian period. Power hammers when were first water-driven trip hammers, then Nasmyth's steam hammer. Pneumatic and hydraulic replacement of these were much later.

Industrial hydraulic presses developed first, not as metal forming, but as packaging presses. Lots of bulky plant-based materials were baled for shipping and this was an important market for press makers. The first two names to look at would be Bramah and Tangye. Andy Dingley (talk) 10:00, 29 August 2016 (UTC)[reply]

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How much can a hydraulic press press?

On behalf of 66.18.171.109

How much do you need? The design is such that it's fairly easy to couple separate press rams together to make a bigger and bigger overall press.

Personally I've made sheetmetal panels for cars with a 1,000 ton press, but that was unusual as the production line presses were mechanical (they're faster). The first big hydraulic cylinders were made by Joseph Bramah and used to launch the SS Great Eastern by pushing it sideways. For forging hot steel, 10,000 ton presses aren't unusual. Shultz Steel in California have a 40,000 ton press [1][2]. An impressive example of such hydraulic forgework would be the new titanium spheres for the submersible DSV Alvin made a few years back by ATI Ladish in Wisconsin.[3][4] - not sure of the force though, but it will be tens of thousands. Andy Dingley (talk) 15:52, 7 February 2018 (UTC)[reply]

Application and Figure shown

I'm making edits for a class assignments. I plan on expanding on the Application section and possibly finding a better figure to illustrate the principle. Anmirzaians (talk) 18:46, 11 September 2019 (UTC)[reply]