Hydraulic
Press Working Theory
Basic
principle is the oil pump transfer hydraulic oil to the integrated cartridge
valve, through one-way valve and relief valve assigned to the cylinders of the
hydraulic oil upper cavity or lower
cavity , under the action of high pressure oil, make the oil cylinder movement.
Hydraulic
press is using liquid to transfer pressure in the airtight container to transfer pressure ,followed with Pascal's
principle .
Four-column
hydraulic press hydraulic drive system made of
the power of mechanism, control mechanism, actuator, auxiliary mechanism
and the working medium.
Power
mechanism usually adopt oil pump as power, generally for the collect type oil pump.
In order to meet the requirements of actuator movement speed, to choose one pump
or more oil pumps .Low voltage (hydraulic is less than 2.5 MP) gear pump; Medium
voltage (hydraulic is less than 6.3 MP) use vane pump;(hydraulic high pressure
is less than 32.0 MP) adopt with plunger pump.
The pressure suitable for all kinds of plastic materials processing and forming, such as steel plate extrusion, bending, deep drawing of stainless steel and metal parts, cold pressing forming ,at the same time can also be used in powder products, grinding wheel, and suppression of thermosetting resin products.