This article mainly introduces:

Kazakhstan hydraulic cylinder,press hydraulic cylinder manufacturer,press hydraulic cylinder

(Kazakhstan press hydraulic cylinder,produced by Hengyu Hydraulic Co., Ltd）

press hydraulic cylinder are widely used in Kazakhstan，because of long service life，high work efficiency，smooth movement.So our company has designed press hydraulic cylinder for customers from Kazakhstan.

Introduction to press hydraulic cylinder:

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 press hydraulic 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 press hydraulic cylinder should be vented: when the press hydraulic cylinder is installed or parked for a long time to work again, the air will penetrate into the press hydraulic cylinder and the pipeline system. In order to prevent the abnormal phenomenon of crawling, noise and heating of the actuator, the air in the press hydraulic cylinder and the system should be discharged. In order to facilitate the removal of air deposited in the press hydraulic cylinder, the oil is best entered and discharged from the highest point of the press hydraulic cylinder. press hydraulic cylinders that require higher motion stability are often equipped with exhaust plugs at both ends. Before working, unscrew the exhaust plug to make the piston go back and forth several times without load in the whole stroke, and the air can be discharged through the exhaust plug. After the air is drained, tighten the exhaust plug before working.

If the press hydraulic cylinder is sliding or crawling (stop and go), check whether there is any astringency inside the press hydraulic cylinder. The internal parts of the press hydraulic cylinder are improperly assembled, the parts are deformed, worn or the shape and position tolerance is excessive, and the action resistance is too large, so that the piston speed of the press hydraulic cylinder changes with the different stroke position, and there is slip or crawl. Most of the reasons are due to poor assembly quality of parts, surface scars or sintered iron filings, so that the resistance increases, the speed decreases. For example, the piston is different from the piston rod or the piston rod is bent, the press hydraulic cylinder or the piston rod is offset from the mounting position of the guide rail, and the sealing ring is too tight or too loose. The solution is to repair or adjust, replace damaged parts and remove iron filings. At the same time, check whether the lubrication is good or whether the press hydraulic cylinder bore processing is out of whack. Because the piston and press hydraulic cylinder, guide rail and piston rod are relative If the press hydraulic cylinder is crawling seriously, check whether air has entered the hydraulic system. Air compression or expansion can cause the piston to slip or crawl. The exclusion measures are to check the hydraulic pump, set up a special exhaust device, and quickly operate the exhaust several times in the full stroke. Check the seals at the same time, because the quality of the seals is directly related to slippage or crawling. When the O-ring is used under low pressure, compared with the U-ring, it is easy to slip or crawl because of the higher surface pressure and the larger difference between static and static friction resistance. The surface pressure of the U-shaped sealing ring increases with the increase of pressure, although the sealing effect is correspondingly improved, but the difference between static and static friction resistance is also larger, the internal pressure increases, affecting the rubber elasticity, due to the increase in the contact resistance of the lip, the sealing ring will tip over and the lip elongation, and it is also easy to cause slip or crawling press hydraulic cylinder weight composition and calculation. The weight of the press hydraulic cylinder is composed of the press hydraulic cylinder diameter, the outer diameter and weight of the press hydraulic cylinder, the rod diameter, and the weight of the accessories, so in calculation, it is to add all these together to get the specific value. However, if there are special circumstances, it may be calculated separately. This work can be carried out by yourself, but it can also be carried out by professionals, so that mistakes can be avoided.

The difference between the integral press hydraulic cylinder and the split press hydraulic cylinder: The integral press hydraulic cylinder and the split press hydraulic cylinder in the press hydraulic cylinder are two different press hydraulic cylinders, and they are very different. The whole press hydraulic cylinder, which is cast in one body, is not prone to problems such as oil leakage; The split press hydraulic cylinder is welded twice, so if it is not handled well at the welding, it is prone to problems such as oil leakage and press hydraulic cylinder damage. Therefore, it is obvious that the answer to this question is for difference.

Answers to some questions about press hydraulic cylinder:

How to calculate hydraulic cylinder thrust?
Cylinder diameter = piston diameter =200MM Piston area =π (200/2) square =3140 square mm =31.4 square cm 25MPA=250KG/ square cm Maximum thrust = pressure * Piston area =250 *31.4 =7850KG=78500 Newtons This is the maximum thrust. The formula can be derived from the calculation formula.

What are the requirements for hydraulic cylinder assembly? ① The installation of the cylinder should be solid and reliable. In order to prevent the influence of thermal expansion, in the case of large stroke and hot working conditions, one end of the cylinder must be kept floating.② pipe connection shall not be relaxed.③ The mounting surface of the hydraulic cylinder and the sliding surface of the piston rod should maintain sufficient parallelism and perpendicality.④ The central axis of the moving cylinder should be concentric with the center line of the load force, otherwise it will cause lateral force, which is easy to wear the seal And piston damage. The greater the distance between the supporting points of the piston rod, the smaller its wear. For the hydraulic cylinder of the moving object, the installation should keep the cylinder parallel with the moving object, and the degree of non-parallelism is generally not greater than 0.05mm/m. ⑤The sealing ring should not be installed too tightly, especially the U-shaped sealing ring.