Analysis of the Impact of Long-term Non-change of oil on Hydraulic Cylinders

Analysis of the Impact of Long-term Non-change of oil on Hydraulic Cylinders

Analysis of the Impact of Long-term Non-change of oil on Hydraulic Cylinders

The hydraulic cylinder is composed of the main unit and the control mechanism. The main parts of the oil cylinder include the body, the master cylinder, the ejection cylinder and the liquid filling device. The power mechanism consists of an oil tank, a high-pressure pump, a low-pressure control system, a motor, a pressure valve and a directional valve. Under the control of the electrical device, the power mechanism realizes energy conversion, regulation and transmission through pumps, cylinders and hydraulic valves, completing the cycle of process actions. Its working mode is reciprocating motion. The machinery manufacturing industry produces cylinders and fasteners, while the chemical industry generally produces seals. Cylinder manufacturers should have a clear understanding of sealing technology, and sealing manufacturers should also understand the working principle of cylinders.

The piston part of the hydraulic cylinder will extend out of the cylinder during operation and be eroded by oxides and acidic gases. Therefore, it is necessary for us to apply an appropriate amount of grease on it for protection to prevent the piston, as a bearing component, from being eroded during operation and possibly breaking. Secondly, open the box and change the oil. Due to long-term use, it is inevitable that foreign objects will enter the oil cylinder, causing friction during use. In addition, hydraulic oil has a long service life. If the oil is not changed for a long time, it will damage or corrode the cylinder. Therefore, the working speed of the oil cylinder should be appropriately controlled and should not exceed 2m/s. This can increase the service life of the oil cylinder. In addition, to protect the mechanism and ensure safety, installing a buffer device in the cylinder helps protect the hydraulic cylinder.

Several manifestations of foreign objects entering a hydraulic cylinder

1. Pay attention to cleaning the hydraulic cylinder. When the pipeline is cleaned again after installation, it should not pass through the cylinder again. On the contrary, the pipeline should be installed in front of the cylinder port. Otherwise, foreign objects in the pipeline will directly enter the cylinder. During the cleaning process, it is necessary to remove foreign objects from the pipeline.

2. Regarding the chips generated during the pipe processing, after cutting the pipe to a certain length and processing it, when removing the burrs at both ends, the burrs should not be left behind. Or when operating the welded pipe, the steel pipe should not be placed around it, as it is very easy for welding foreign objects to mix in. Therefore, if it is necessary to place the pipe around it, the pipe opening should be directly sealed. And stack the pipes on the dust-free workbench.

3. When sealing, simple sealing materials are brought into the hydraulic cylinder. During installation and inspection, we will adopt different winding methods, such as straight winding and sealing tape. In this way, the sealing tape will be cut for use and then directly enter the cylinder. Moreover, linear sealing will affect the winding connection. In severe cases, the check valve of the hydraulic cylinder will not be flexible.

The above is an introduction to the analysis of the impact of long-term non-change of oil on hydraulic cylinders. If you have any other questions related to non-standard hydraulic cylinders, please feel free to consult us at any time.