Piston rod processing technology adopts rolling processing

Thereby improving the surface corrosion resistance, and can delay the generation or expansion of fatigue cracks, thereby improving the fatigue strength of the cylinder rod. Through roll forming, a cold work hardened layer is formed on the rolled surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, thereby improving the wear resistance of the cylinder rod surface and avoiding burns caused by grinding. After rolling, the surface roughness value is reduced, which can improve the matching properties. At the same time, the friction damage to the sealing ring or the sealing element when the cylinder rod piston moves is reduced, and the overall service life of the cylinder is improved. The rolling process is a high-quality process measure.

Piston rods are mostly used in oil cylinders and cylinder motion execution parts, and are a moving part with frequent movements and high technical requirements. Take a hydraulic cylinder as an example, which is composed of a cylinder barrel, a piston rod (cylinder rod), a piston, and an end cover. The quality of its processing directly affects the life and reliability of the entire product. The piston rod has high processing requirements, and its surface roughness is required to be Ra0.4～0.8um, and the requirements for coaxiality and wear resistance are strict. The basic feature of the cylinder rod is the processing of a slender shaft, which is difficult to process and has been troubled by the processing.