This article mainly introduces:

Republic of Lithuania hydraulic cylinder,adjustable stroke cylinder manufacturer,adjustable stroke cylinder

(Republic of Lithuania adjustable stroke cylinder,produced by Hengyu Hydraulic Cylinder Factory）

adjustable stroke cylinder are widely used in Republic of Lithuania，because of high work efficiency，excellent fatigue and impact resistance，no need for deceleration device.So our company has designed adjustable stroke cylinder for customers from Republic of Lithuania.

Introduction to adjustable stroke cylinder:

What kind of process is used in the adjustable stroke cylinder to make high-quality adjustable stroke cylinder products: the body is the main component of the adjustable stroke cylinder, mining single pillar, hydraulic support, gun tube and other products, and its processing quality directly affects the life and reliability of the entire product. Body processing requirements are high, the internal surface roughness requirements are Ra0.4 ~ 0.8&um, the coaxiality, wear resistance requirements are strict. The basic feature of body is deep hole processing, which has always troubled the processing personnel. The adjustable stroke cylinder products of our company mainly use rolling processing, because the surface layer has surface residual compressive stress, which helps to close the surface micro-cracks and hinder 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 body can be improved. The correct rolling process of the adjustable stroke cylinder block: broaching block - fine boring block - grinding block. The rolling method is: broaching block - fine boring block - rolling block, the process is 3 parts, but the time is compared: grinding 1 meter of the block is about 1-2 days, rolling 1 meter of the block is about 10-30 minutes. Input comparison: grinding machine or quilting machine (tens of thousands - millions), rolling knife (ten thousand - tens of thousands). After rolling, the surface roughness of the hole decreases from RA3.2-6.3um before rolling to RA0.4-0.8&um, the surface hardness of the hole increases by about 30%, and the fatigue strength of the inner surface of the adjustable stroke cylinder increases by 25%. If the service life of the adjustable stroke cylinder is only considered, it is increased by 2 to 3 times, and the efficiency of the boring and rolling process is about 3 times higher than that of the grinding process. adjustable stroke cylinder misoperation or operation failure may be caused by the following reasons, you can start from these aspects of the investigation: (1) spool stuck or valve hole blocked. When the spool of the flow valve or direction valve is stuck or the valve hole is blocked, the adjustable stroke cylinder is prone to misoperation or operation failure. At this time, the contamination of the oil should be checked; Check whether dirt or colloidal deposits are stuck in the spool or blocking the valve hole; Check the wear of the valve body, clean and replace the system filter, clean the fuel tank, and replace the hydraulic medium. (2) The piston rod and adjustable stroke cylinder are stuck or the adjustable stroke cylinder is blocked. At this time, no matter how to manipulate, the adjustable stroke cylinder does not move or moves very little. At this time, check whether the piston and piston rod seal is too tight, whether it enters the dirt and gum deposits: whether the shaft line of the piston rod and the adjustable stroke cylinder is in the center, whether the wearing parts and seals are invalid, and whether the load is too large.

When the adjustable stroke cylinder needs to be stored for a period of time, please follow the recommended methods: The adjustable stroke cylinder should be stored in a dry, clean, non-corrosive gas indoor environment, pay attention to protect the adjustable stroke cylinder from internal corrosion and external damage. If the indoor requirements cannot be met, the hardened and well-drained ground should be cushioned at least 30cm, and the upper part should be covered with waterproof storage. The oil adjustable stroke cylinder should not be in direct contact with water vapor for a long time. The adjustable stroke cylinder should be placed as vertically as possible with the piston rod facing up, which minimizes corrosion due to possible condensation in the adjustable stroke cylinder and permanent deformation of the seal due to the piston and rod weight. (When the shield is stored in the shield machine, the support shoe is placed upward). Keep the oil port protective cover until the pipe is connected. For long-term storage, the protection should be added on both sides of the piston of the adjustable stroke cylinder Before working, the adjustable stroke cylinder must be run repeatedly with low pressure (greater than the starting pressure) to discharge the air in the adjustable stroke cylinder before normal work. The oil inlet and outlet and the joint must be tightly fastened with a combination pad to prevent oil leakage.

The body of the adjustable stroke cylinder on the processing process requirements: the body of the adjustable stroke cylinder is an important and essential part of the adjustable stroke cylinder, because it has an irreplaceable role. The processing requirements for this part are very high, requiring that the surface roughness of the adjustable stroke cylinder after processing should reach 0.4-0.8um, and the coaxiality and wear resistance requirements are also very high.

When the adjustable stroke cylinder wear is serious, you can try to use an alloy scraper to shave grooves with a depth of more than 1mm on the surface of the slip injury, then clean the grooves with acetone, apply the adjusted TS311 anti-wear repair agent on the polished surface with the adjustable stroke cylinder inner diameter copying plate, and scrape it flat vigorously to ensure compaction and higher than the inner surface of the adjustable stroke cylinder. After curing, polish to leave a finishing margin. Finally, the overall size, shape tolerance and roughness of the adjustable stroke cylinder can meet the requirements by grinding. However, the life and reliability of this repair adjustable stroke cylinder are not high.

Answers to some questions about adjustable stroke cylinder:

What is the pressure provided for a 63-bore cylinder with a pressure of 2 mpa?
2 mpa pressure is equivalent to 20 kg per square centimeter, 6.3 cm straight longitude, 3.15 cm radius, square, multiplied by, calculated an area of about 31.5 square centimeters, multiplied by 20 kg, the pressure is about 630 kg.

The hydraulic cylinder is slow when moving forward and faster when moving back.
If the cylinder is single, it is slow when it is moving forward without the rod cavity, and fast when it is shrinking.