This article mainly introduces:

Korea hydraulic cylinder,pressure retaining cylinder manufacturer,pressure retaining cylinder

(Korea pressure retaining cylinder,produced by Hebei Hengyu company）

pressure retaining cylinder are widely used in Korea，because of powerful torque，smooth movement，high work efficiency.So our company has designed pressure retaining cylinder for customers from Korea.

Introduction to pressure retaining cylinder:

pressure retaining 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 pressure retaining 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 ' pressure retaining 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 pressure retaining cylinder and the hydraulic motor are devices that convert the pressure energy of the liquid into mechanical energy and output it. The pressure retaining cylinder mainly outputs linear motion and force. The pressure retaining 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 pressure retaining cylinder, plunger pressure retaining cylinder is mainly used for: machinery, such as excavators; Scientific research, such as university structure laboratory. The plunger pressure retaining cylinder is used for pressure testing machines, such as Jinan test, and the test machine is used for material testing.

The pressure retaining cylinder should be used as far as possible to avoid the transverse force, sometimes the piston rod to bear the transverse load is too large, especially do not force or pull the pressure retaining cylinder, bite. Elimination method: When installing the pressure retaining cylinder, ensure that the axis position of the pressure retaining cylinder is consistent with the direction of movement; Make the load borne by the pressure retaining cylinder as far as possible through the pressure retaining cylinder axis, to avoid the phenomenon of eccentricity.

If it is found that the pressure retaining cylinder lubrication is poor or the pressure retaining cylinder bore processing is abnormal, it is necessary to feedback the situation to the manufacturer, because the piston and the pressure retaining cylinder, the guide rail and the piston rod have relative movement, if the lubrication is poor or the pressure retaining cylinder bore is abnormal, it will aggravate the wear and reduce the straightness of the pressure retaining cylinder center line. In this way, when the piston works in the pressure retaining cylinder, the friction resistance will be large and small, resulting in slip or crawling. The solution is to repair and grind the pressure retaining cylinder first, and then prepare the piston according to the matching requirements, repair and grind the piston rod, and configure the guide sleeve.

When using the pressure retaining cylinder product, be sure to operate safely in accordance with the specification documents provided by the manufacturer, and pay attention to protecting the pressure retaining cylinder block. If the pressure retaining cylinder block is damaged, it will cause adverse consequences: ① The material debris extruded from the scratch groove will be embedded in the seal, which may cause new scratch area marks while damaging the working parts of the seal during operation. ② Deterioration of the surface roughness of the inner wall of the pressure retaining cylinder, increase friction, easy to produce crawling phenomenon. ③ Increase the internal leakage of the pressure retaining cylinder, so that the working efficiency of the pressure retaining cylinder is reduced.

Answers to some questions about pressure retaining cylinder:

What is the difference between single acting hydraulic cylinder and double acting hydraulic cylinder?
Single action hydraulic cylinder is a single direction force work, the return of the plunger depends on itself or the weight of the mechanism to return. The double acting hydraulic cylinder is mainly different from the extension and retraction of the piston (the thrust and tension of the saying), which are all operated by the action of liquid pressure.

How to select the propulsion cylinder according to the shield attitude, cylinder stroke, shield tail clearance and other factors?
Generally, the shield machine will be equipped with the corresponding cylinder. Soil pressure balancing machine, mud water balancing machine have the corresponding cylinder, there will be no insufficient cylinder force. In the jacking process of the pipe jacking machine, there are certain requirements for the jacking force of the cylinder.