The cylinder rod of the piston rod is processed by rolling. Because the surface layer has residual compressive stress on the surface, it helps to close the micro cracks on the surface and hinders the expansion of erosion, thereby improving the surface corrosion resistance and delaying the generation of fatigue cracks or Expand, thus improving the fatigue strength of the cylinder rod.
Through rolling forming, a layer of cold 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 surface of the cylinder rod and avoiding burns caused by grinding. After rolling, the reduction in surface roughness values improves fit properties. At the same time, the friction damage to the sealing ring or the sealing member during the movement of the cylinder rod piston is reduced, and the overall service life of the oil cylinder is improved.
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