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Hydraulic piston rod with the advantages of rolling processing
Jul 02, 2018

After a series of processing, the hydraulic piston rod has obviously improved the surface quality of the workpiece, greatly improved its wear resistance, corrosion resistance and cooperation, and has been widely used in the industrial field. At present, it is mainly used rolling production process, rolling process processing is actually a kind of pressure finishing.


In simple terms, by using the cold-plastic characteristics of metal materials at room temperature, a certain amount of pressure is applied to the outer surface of the workpiece using a rolling tool to plastically move the surface metal of the workpiece and fill it into the valley of the original residual trough. Therefore, the surface roughness of the hydraulic piston rod is reduced.


In addition, when the hydraulic piston rod is processed and treated, because of the residual residual compressive stress left on its outer surface, it helps close the appearance of small cracks and prevents the expansion of the erosion effect. In this way, the corrosion resistance of the workpiece is significantly improved, and the occurrence or expansion of fatigue cracks can be delayed, thereby increasing the fatigue strength of the hydraulic piston rod.