The piston rod is processed by rolling, so as to enhance the surface corrosion resistance and delay the generation or expansion of fatigue cracks, thus enhancing the fatigue strength of the cylinder rod. Through rolling forming, a layer of cold hardening layer is formed on the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, thereby enhancing the wear resistance of the surface of the cylinder rod and avoiding burns caused by grinding.
1. Adjust the moving speed between the product and the induction switch to avoid the occurrence of heat-treated soft bands. the
2. Appropriately expand the output power of electromagnetic induction heating, so that the surface strength and reasonable hardening layer can deeply meet the product requirements. the
3. After quenching and tempering, for workpieces that need to be straightened, it is necessary to ensure that the internal stress caused by straightening does not hinder the subsequent manufacture and use of the piston rod, and carry out stress relief when necessary.
