Uses Of Hydraulic Presses

A hydraulic press is a machine that uses liquid as a working medium to transfer energy to achieve various processes. In addition to forging and forming, hydraulic presses can also be used for correction, press fitting, packaging, block pressing and plate pressing. Hydraulic presses include water presses and oil presses. The one with water-based liquid as the working medium is called a hydraulic press, and the one with oil as the working medium is called an oil press. The specifications of hydraulic presses are generally expressed in nominal working force (kN) or nominal tonnage (tons). Most hydraulic presses used for forging are hydraulic presses with a higher tonnage. In order to reduce the size of the equipment, large forging hydraulic presses often use higher pressures (about 35 MPa), and sometimes ultra-high pressures of more than 100 MPa are also used. Hydraulic presses for other purposes generally use a working pressure of 6 to 25 MPa. The tonnage of an oil press is lower than that of a water press.