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Basic requirements for hydraulic piston rods and rolling processing
Jul 14, 2018

The main function of the hydraulic piston rod is to connect the piston and the crosshead. To a certain extent, it mainly transmits the force acting on the piston and drives the piston to move, which is the basic requirement for the piston rod.

1. The hydraulic piston rod needs to have sufficient strength, rigidity and stability.

2. Good wear resistance and high processing accuracy and surface roughness requirements.

3. Minimize the effects of stress concentration on the structure.

4. Ensure reliable connection and prevent looseness.

5. The design of the piston rod structure is to facilitate the disassembly and assembly of the piston.


Hydraulic piston rods are mainly subjected to rolling processing to a certain extent, so that the surface corrosion resistance can be effectively improved, and the fatigue cracks can be effectively delayed or expanded to a certain extent, thereby improving the fatigue strength of the cylinder rod. By rolling forming, the rolling surface forms a cold hardening layer, which reduces the elastic and plastic deformation of the grinding contact surface, thereby improving the wear resistance of the cylinder rod surface and avoiding burns caused by grinding.

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