road paving machine hydraulic cylinder Sold to Libya

This article mainly introduces:

Libya hydraulic cylinder,road paving machine hydraulic cylinder manufacturer,road paving machine hydraulic cylinder

(Libya road paving machine hydraulic cylinder,produced by Hengyu Hydraulic Co., Ltd）

road paving machine hydraulic cylinder are widely used in Libya，because of excellent fatigue and impact resistance，no need for deceleration device，long service life.So our company has designed road paving machine hydraulic cylinder for customers from Libya.

Introduction to road paving machine hydraulic cylinder:

There are some honeycomb holes in the inner wall of the road paving machine hydraulic cylinder, piston or piston rod surface. How is this formed? When we repair the road paving machine hydraulic cylinder, we can see that there are some honeycomb holes on the inner wall of the road paving machine hydraulic cylinder, the piston or the piston rod surface, which are caused by cavitation. Therefore, the cavitation of the road paving machine hydraulic cylinder is targeted to prevent. Is very necessary.

The method of sleeve road paving machine hydraulic cylinder to improve the processing quality: there is a big gap in the service life of post-plating polishing and post-plating polishing, especially in mass production. Strictly clean the flying edge and burr of mechanical components, especially the edge of the sealing groove, and the tiny metal burr, strictly clean before assembly. The surface fatigue strength and stress corrosion resistance of the road paving machine hydraulic cylinder can be significantly improved by rolling in the finishing of the inner holes of the road paving machine hydraulic cylinder. The roughness of the surface of the friction pair is generally controlled between Ra0.4 and 0.8.

When the road paving machine hydraulic cylinder is customized, if there are high requirements for the quality of the road paving machine hydraulic cylinder, it is best to use rolling processing, because the surface layer has surface residual compressive stress, which helps to close the surface of the small crack, preventing the expansion of erosion. Thus, the corrosion resistance of the surface can be improved, and the fatigue crack can be delayed or expanded, and the fatigue strength of the road paving machine hydraulic cylinder can be improved. By rolling forming, a cold working hardening layer is formed on the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, thereby improving the wear resistance of the inner wall of the road paving machine hydraulic cylinder and avoiding the burn caused by grinding. After rolling, the reduction of surface roughness value can improve the matching property.

In order to ensure the service life of the road paving machine hydraulic cylinder, the hydraulic system must be set up effective filtration to prevent pollution, the cleanliness of the oil should meet the ISO4406 standard, and the quality of the filtration should also meet the corresponding standards in ISO. The grade requirements of the filter are performed according to the actual working conditions of the system, but the minimum requirements are not less than 19/15 in ISO4406, that is, 24μ (β10≥75) in ISO4572.

Answers to some questions about road paving machine hydraulic cylinder:

What is a constant velocity cylinder? What is the difference between hydraulic cylinder and constant velocity cylinder?
The constant speed cylinder should be the same as the speed of the piston rod extension and withdrawal cylinder is called the constant speed cylinder. The difference between it and the ordinary hydraulic cylinder is that the ordinary hydraulic cylinder only has a piston rod extended out, and the general extension speed is slow and the recovery speed is fast, because of the relationship between the effective area. Effective area of piston chamber > Effective area of piston rod chamber. The effective area on both sides of the constant speed cylinder is the same, because there are piston rods sticking out at both ends. The application of constant speed cylinder is most common in grinding machines.

How does the self-locking cylinder work?
Hydraulic cylinder self-locking is divided into oil self-locking and mechanical self-locking. The oil circuit itself is equipped with a valve to maintain pressure, so that the hydraulic oil of the cylinder does not return to the tank, and the oil chamber of the cylinder is filled with a certain pressure of oil. However, this pressure holding self-locking is not very safe and reliable, and the plunger will slowly return if there is a leak. Mechanical self-locking is to install a nut on the plunger of the cylinder, and when the cylinder rises to the required position, the nut on the cylinder plunger is rotated to the end, and the cylinder block is in contact, so that the plunger will be fixed to the required height. When it is necessary to relieve the pressure, screw the nut on again and let the plunger return to the position. This kind of cylinder has a special name, called self-locking hydraulic cylinder.