Structure principle of hydraulic press

Hydraulic machine by the host and the power sector composed of two parts. Hydraulic machine host part including the fuselage, the master cylinder, the top of the cylinder and liquid-filled devices. Power by the fuel tank, high-pressure pump, low-voltage control systems, motors and a variety of pressure valves and directional valves and other components. Power institutions in the electrical device under control, through the pump and cylinder and a variety of hydraulic valve to achieve energy conversion, regulation and transportation, complete a variety of process action cycle.

     The principle of a hydraulic press is that when two cylinders of different sizes have a slidable piston, if a certain pressure is applied to the small piston, the small piston transfers this pressure to the large piston according to the Pascal's law , Will go to the top of the big piston. The cross-sectional area of the small piston is S1, and the downward pressure applied to the small piston is F1. The smaller piston then produces a pressure P = F1 / S1. Depending on the application of a certain pressure to a piston in the fluid system, the same pressure increment will be produced on the other piston. The pressure of the large piston must also be equal to P. If the piston cross-sectional area is S2, the pressure P = F1 / S1 = F2 / S2. When the area of the large piston is N times the area of the small piston, the force acting on the large piston will increase to N times the first piston. From the above, in the small piston plus a small force, then the big piston will get a lot of force, for this to use hydraulic press to suppress plywood, oil extraction, extraction of heavy objects, forging steel.

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