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Hydraulic piston rod processing conditions and its quality control
May 24, 2018

In order to ensure the quality of the finished product, a good processing foundation should be established first when processing hydraulic piston rods. Therefore, it is necessary to clarify its actual use and working conditions, and at the same time, determine the structural characteristics, load conditions, required speeds, and stroke and movement requirements of the working organization. In addition, the operating pressure of the hydraulic system selected by the hydraulic piston rod must also be specified. The


In addition to these points, we must also be familiar with the details of the material, accessories, and processing technology of the hydraulic piston rod currently being processed. Of course, we must pay attention to comply with relevant national standards and technical specifications. At the same time, it should be noted that the piston rod should be subjected to a very large load in the multi-pull state as much as possible, and has good longitudinal stability in the multi-pressure state.


The reason why it emphasizes its processing conditions is mainly to ensure the quality of finished products. Everyone should know that the quality of hydraulic piston rod machining can affect the reliability of the product. Its main application is in hydraulics and pneumatics, its processing requirements are relatively high, so the quality of the hydraulic cylinder will be basically affected by the quality of the piston rod. At the same time, the piston rod is also a connecting part that supports the piston to do work. Most of the piston rods are used in the cylinder and cylinder movement executing parts. It is a moving part with frequent movement and high technical requirements.


In order to meet the requirements of practical applications, it is necessary to strictly control the machining quality of the hydraulic piston rod. It is generally required that the surface roughness is below Ra0.2, and the coaxiality and wear resistance are strictly required. Because it will also receive a part of the radial force. For this reason, the length of the hydraulic cylinder piston must be appropriate, generally taking 0.7 to 1.0 times the outer diameter of the piston rod.


In other words, to further improve the quality of the hydraulic piston rod, it also helps to enhance the performance of the hydraulic cylinder to extend its life. Under normal circumstances, the coaxial tolerance of the outer diameter of the hydraulic piston rod to the inner hole and the sealing groove should be controlled within 0.02 mm. It is usually required that the verticality tolerance of the end face of the cylinder facing the axis of the hydraulic cylinder is less than 0.04 mm/100 mm.http://www.xhychromerod.com/