1. The piston rod is usually made of 45 steel. When there is a large impact force and heavy load transmission, it is made of 40Cr steel. This is to ensure that the piston rod has sufficient working strength.
2 In order to improve the corrosion resistance of the piston rod, the working surface of the rod can be plated with hard chrome, so chrome-plated rods are widely used.
3. Generally designed as a cylinder, if the diameter is larger, a hollow piston rod can be used. Manufactured from 45 gauge seamless steel pipe.
4. When manufacturing, the blank should be forged, rough machined and then quenched and tempered, with a hardness of HB=230-250. The purpose of quenching and tempering is to improve the machinability and the working strength of the material.
5. The piston rod and the guide sleeve on the end cover are matched with H8/f9.
6. The surface roughness Ra of the piston rod after finishing should be no more than 0.65μm.
