How to improve the corrosion resistance of hydraulic cylinder

The hydraulic cylinder used in the hydraulic system will have a certain quality mechanism during operation. When the hydraulic cylinder moves to the end of the stroke, it will have more kinetic energy during operation. If the speed is not reduced, the piston of its hydraulic cylinder will collide with the cylinder head mechanically, which can produce impact, noise and destruction to a certain extent.
Hydraulic cylinder
In the manufacturing process of hydraulic cylinder, the processing quality will directly affect the service life and reliability of the whole product to a certain extent. Its cylinder barrel has high processing requirements. During manufacturing, its internal surface roughness is required to be Ra 0.4~0.8 um, and its coaxiality and wear resistance are strictly required. The basic feature of cylinder barrel is deep-hole machining, which always bothers the machining personnel.
When the hydraulic cylinder reaches a certain level, it will roll. During the manufacturing process, there will be residual compressive stress on its surface, which will help to seal the tiny cracks on its surface to a certain extent, thus preventing the expansion of erosion to a certain extent. So as to improve the corrosion resistance of the surface, delay the generation or expansion of fatigue cracks, and improve the fatigue strength of the cylinder liner.
To a certain extent, the hydraulic cylinder will directly form a layer of cold-worked hardening layer on the rolling surface during operation through its rolling forming, which can reduce the elastoplastic deformation of the contact surface of the grinding pair to a certain extent, thus improving the wear resistance of the inner wall of the cylinder liner and avoiding the burn caused by grinding. After rolling, the reduction of surface roughness can improve the matching performance.