This article mainly introduces:
Egypt hydraulic cylinder,reset cylinder manufacturer,reset cylinder
(Egypt reset cylinder,produced by Hengyu Group）
reset cylinder are widely used in Egypt，because of powerful torque，clever hydraulic energy conversion，simple structure and reliable operation.So our company has designed reset cylinder for customers from Egypt.
At the rated pressure, the thrust of the reset cylinder is determined by what factors: at the rated pressure of the oil pump, the work done by the reset cylinder is related to the diameter of the reset cylinder, but not to the stroke of the reset cylinder. Moreover, the larger the reset cylinder diameter, the larger the area, and the greater the pressure obtained. To this point, we should have a correct understanding and clear understanding, so as to avoid problems in the use of the reset cylinder.
reset cylinder piston rod material selection and requirements: ① piston rod is usually made of 45 steel. When there is a large impact force and heavy load transmission, it is made of 40Cr steel. This is to ensure that the piston rod has sufficient working strength. The piston rod is generally designed as a reset cylinder, if the diameter is larger, the hollow piston rod can be used. Made of No. 45 seamless steel pipe. ③ When the piston rod is manufactured, the blank should be first forged and conditioned after mechanical rough processing, and the hardness of HB=230 ~ 250. The purpose of conditioning is to improve the machining performance and increase the working strength of the material. ④ The surface roughness Ra of the piston rod after finishing should not be greater than 0.65μm. ⑤ In order to improve the corrosion resistance of the piston rod, the working surface of the rod can be plated with hard chromium. ⑥ The piston rod and the end cap are guided by H8 ' reset cylinder piston rod industry standard: piston rod diameter series of national recommended standard GB/T2348-1993. Piston rod thread size series standard GB/T2350-1980. Please refer to execute. There is no industry standard for piston rods Both the reset cylinder and the hydraulic motor are devices that convert the pressure energy of the liquid into mechanical energy and output it. The reset cylinder mainly outputs linear motion and force. The reset cylinder has a variety of forms, according to the different characteristics of its mechanism it can be divided into piston type, plunger type and swing type three categories, according to the mode of action he can be divided into single action and double action. Piston reset cylinder, plunger reset cylinder is mainly used for: machinery, such as excavators; Scientific research, such as university structure laboratory. The plunger reset cylinder is used for pressure testing machines, such as Jinan test, and the test machine is used for material testing.
The pressure, temperature, medium and speed of different types of seals are not the same, water-ethylene glycol medium (HFC) can not be sealed with polyurethane, it can only use rubber seal; When the reset cylinder is running fast, it must be sealed with slip ring, such as Sterseal, Glairing, GD1000K, TDI, etc., when the running speed is slow, Yx, U, V combination seals can be used; Fluorine rubber seal is used in high temperature and high pressure environment; When the running speed is fast, the buffer sleeve and buffer valve must be considered.
The internal leakage of the reset cylinder is an important indicator to measure the quality of the reset cylinder: the internal leakage of the reset cylinder will reduce the volumetric efficiency, increase the temperature rise of the oil, affect the positioning accuracy of the reset cylinder, so that the reset cylinder can not accurately and stably stop in a certain position of the reset cylinder, so it is one of the main indicators of the reset cylinder.
Need a hydraulic cylinder, vertical upward 10 seconds to lift 20 tons of weight up 2 meters, how large cylinder and rod, how much pressure to use the plunger pump and how big?
The first thing to determine the system pressure, let's say 25 mpa, can take into account cost and performance. 1 Cylinder area 20000/250=80 square cm cylinder diameter (80/3.14) squared x2=200 mm 2 cylinder volume 80x200=16000 ml =16 L 3 Required pump flow 16x60/10=96 L/min 4 Power 96x25/55=43 kW 45 kW motor is available.
How to calculate the tonnage of the hydraulic press? Example: The input cylinder pressure is 5Mpa, the end area of the cylinder piston is 100mm, and how much is the thrust tonnage?
F=P*S=5*10^6*3.14*(1/20)^2=39250N.
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