The piston rod is mainly manufactured using professional processes such as precision cold drawing, precision grinding, and high-precision polishing during operation, and its various technical indicators meet the standards. Piston rods can be directly used in industries such as oil cylinders, air cylinders, shock absorbers, textile printing and dyeing, printing machinery guide rods, die-casting machines, injection molding machine guide rods and top rods, as well as modern office machinery guide shafts such as four column presses, fax machines, printers, and other precision slender shaft components.
Design considerations for piston rods
1. The purpose of the equipment and the conditions of the workpiece.
2. The structural characteristics, load conditions, required speed, size stroke, and action requirements of the working organization.
3. The selected hydraulic system working pressure.
4. The current status of materials, accessories, and processing techniques.
5. Relevant national standards and technical specifications, etc.
6. Efforts should be made to ensure that the piston rod can withstand large loads in a high load state and has good longitudinal stability in a high-pressure state.
Rolling processing of piston rod
The piston rod is formed by rolling, and a cold work hardening layer is formed on its rolling surface, which can effectively reduce the elastic and plastic deformation of the grinding contact surface, and delay the generation or expansion of fatigue cracks, thereby improving the surface corrosion resistance.
Chrome plating on piston rod
After chrome plating, the piston rod can have a hard, smooth, and corrosion-resistant surface. To improve the corrosion resistance of the piston rod surface, chrome plating is required. After chrome plating, the hardness of the coating on the piston rod can reach HV1100, and the coating is smooth, uniform in thickness, and has strong dispersibility, which can improve it in certain aspects.
Quenching and tempering of piston rod
The quenching and tempering of the piston rod is a process of quenching and tempering the piston rod. After quenching and tempering, the working strength of the material can be effectively improved, which helps to close small surface cracks, hinder the expansion of erosion, and thus enhance the surface corrosion resistance. However, not all piston rods require quenching and tempering, so the quenching and tempering treatment should be judged based on the actual situation and materials.