The hydraulic press is a machine designed to use fluid as the working medium and is made according to the Pascal principle of energy transfer to realize various processes.
The hydraulic press has mainly three parts: the machine (host), power system, and hydraulic control system.
Hydraulic press, also known as Bramah press, is a machine made by Pascal’s law that uses hydraulic pressure to achieve specific processes. There are many types of hydraulic presses. Of course, the uses are also diverse according to needs.
For example, according to the type of fluid that transmits pressure, there are two categories: water-based press and oil-based press. The total pressure generated by the hydraulic press is relatively large, and it is often used for forging and stamping.
Forging hydraulic press is divided into die forging hydraulic press and free forging hydraulic press. The die forging hydraulic press uses molds, while the free forging hydraulic press does not use molds.
A hydraulic press offers a range of tasks, especially in the manufacturing industry. In addition to being used for forging and stamping, as mentioned above, hydraulic presses can also be used for straightening, pressing, packing, powder metallurgy, and press fitting.
Hydraulic presses include water-based liquids and oil-based hydraulic presses. Water-based hydraulic presses are also called hydrostatic presses. The specifications of hydraulic presses are generally expressed in terms of nominal working force (kN) or nominal tonnage (tons).
Most hydraulic presses for forging have a relatively high tonnage. In order to deform the billet or workpiece, large forging hydraulic presses usually use higher pressures (about 35 MPa). Sometimes, they use ultra-high pressures of more than 100 MPa.
Hydraulic presses for other purposes generally use a working pressure of 6 to 25 MPa. The tonnage of oil-based hydraulic pressed is lower than that of water-based hydraulic presses.