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How much do you know about the piston rod?
Published: 201905-11 Clicks: times
From the name, we know hydraulic piston rods It is a coupling component that supports the piston to do work. It is applied to the cylinder and cylinder movement implement components, and is a moving component with relatively high motion requirements. Taking a hydraulic cylinder as an example, it consists of a cylinder, a piston rod (cylinder rod), a piston, and an end cover.The piston rod has high processing requirements, and its surface roughness needs to be Ra0.4 to 0.8um. The coaxiality and wear resistance need to be severe. The basic feature of the cylinder rod is the slender shaft machining, which is difficult to machine. The processing technology adopts rolling processing. Because the surface layer has residual pressure on the surface, it helps the surface of the surface to crack the fine cracks, hinders the widening of the erosion effect, and can delay the onset or expansion of the fatigue crack.
Therefore the forward cylinder rod is fatigued. By rolling forming, the rolling surface forms a cold hardening layer, which reduces the elastic and plastic deformation of the grinding contact surface, and then strengthens the wear resistance of the cylinder rod surface, thereby avoiding burns caused by grinding. and many more. After rolling, the surface roughness value is reduced, and the cooperative nature can be advanced. In the same way, the damage to the seal ring or the seal when the cylinder rod piston is moved is reduced, and the overall service life of the cylinder is increased.
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