Hydraulic press machine is one kind of device used hydraulic oil to deliver pressure, and hydraulic oil delivers pressure in the sealed container, which is in accordance with Pascal law. Moreover, the delivery system of hydraulic press consists of dynamic mechanism, control mechanism, implementing mechanism, supporting mechanism as well as operating media. Dynamic mechanism is generally used volumetric oil pump, so in order to fulfill the speed requirement of implementing mechanism, operators would select one or several oil pumps. In the cases of different oil pressures, operators would choose different components, for instance, if oil pressure is smaller than 2.5MP, they would choose wheel pump, if oil pressure is smaller than 6.3MP, they would select vane pump, and if oil pressure is at high-pressure level, they would thus choose piston pump. Generally speaking, hydraulic press refers to hydraulic pump and hydraulic motor, both of them are the energy changing devices in hydraulic system. The different point is that hydraulic pump would change mechanical energy in driven motor into pressure energy of oil, so we can regard hydraulic pump as the dynamic device in hydraulic system, while hydraulic motor changes pressure energy into mechanical energy, so it is the implementing device in hydraulic system. In addition, the operating principle of hydraulic press is simple. Under the control of electrical installation, dynamic mechanism would realize the energy transformation, adjustment and delivery with the help of pump, oil cylinder and varied hydraulic valves, so that various processing cycles can be properly done. As for the classification of hydraulic press, it can be divided into different types in terms of different conditions, for instance, based on the delivered pressure, it has oil hydraulic press and water hydraulic press and single action press. As the total pressure produced by water hydraulic press is relatively large, it is often used to do the forging and stamping. While forging water hydraulic press can be further divided into mold-forging typed as well as free-forging typed, that is to say, mold-forging water hydraulic press is used mold, but free-forging water hydraulic press doesn't use mold. Furthermore, according to the structural forms, it is classified into four-pole typed, C-shaped typed, horizontal typed as well as vertical typed hydraulic press and metal stamping presses. What's more, the repair of hydraulic press is of great importance. It is better to use pressure of hydraulic cylinder to dismantle tight-fit components, for if operators use stick or hammer to dismantle those parts, which will waste their much energy, and such doing is low efficient and unsafe, and it is easy to break other parts. While using pressure of hydraulic cylinder will not break components, and it won't waste energy, more importantly, it is safe and reliable, and it has high installation accuracy.
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