200 tons Hydraulic press Metal Punching Four Columu Hydraulic Power Press

Four column hydraulic press
The hydraulic transmission system of four column hydraulic press is composed of power mechanism, control mechanism, actuator,auxiliary mechanism and working medium. The power mechanism usually uses oil pump as power mechanism, generally is the integral oil pump. To meet the refusal of the actuator speed, match one or more pumps. Gear pump for high pressure (oil pressure greater than 2.5MP); Blade pump for medium pressure (oil pressure greater than 6.3mp); High pressure (oil pressure is greater than 32.0mp) is used as plunger pump. The pressure processing and forming of various plastic materials, such as the fracture, inclination, drawing and cold pressing forming of metal parts, can be used as the pressing of powder products, grinding wheels, rubber and resin thermosetting products. Hydraulic press is a kind of machine which uses liquid as working medium and four column hydraulic press made according to Pascal principle to transmit energy to construct various processes. Hydraulic press is generally composed of three parts: the machine (main engine), power system and hydraulic control system. Hydraulic press classification includes
valve hydraulic press, liquid hydraulic press, engineering hydraulic press. Working principle of hydraulic press: the area of large and small column plug is S2 and S1, and the force on plunger is F2 and F1. According to Pascal principle, the sealing liquid fluid is larger than, namely f2/s2=f1/s1=p; F2=F1(S2/S1)。 The response hydraulic gain is as good as mechanical gain, but the force decreases, but the power is not gain. Therefore, the movement distance of the large plunger is S1 / s times of the movement distance of the small column plug. The basic principle is that the oil pump transmits the hydraulic oil to the construction plug-in valve block, and distributes the hydraulic oil to the upper or lower cavity of the cylinder through each one-way valve and overflow valve. The hydraulic press is a device that uses liquid to transmit pressure. The pressure of liquid in sealed container is carried out according to Pascal law