Working pressure and standard requirements of piston rod
May 15, 2022
The piston rod is mainly manufactured by precision cold drawing, precision grinding and high-precision polishing during operation, and its various technical indicators meet and exceed the basic standards. Piston rods can be directly used in oil cylinders, air cylinders, shock absorbers, textile printing and dyeing, printing machinery guide rods, die-casting machines, injection molding machine guide rods and four-column press guide posts, fax machines, printers and other modern office machinery guide shafts, etc. Industry products where precision elongated shafts are components.
Piston Rod Design Matters
1. The use of the equipment and the condition of the workpiece.
2. Structural characteristics, load conditions, required speed, stroke size and action requirements of the working mechanism.
3. The selected hydraulic system working pressure.
4. Current status of materials, accessories and processing techniques.
5. Relevant technical standards and technical specifications, etc.
6. Try to make the piston rod bear a very large load in the multi-pull state, and have good longitudinal stability in the multi-pressure state.
Rolling of Piston Rod
The piston rod is formed by rolling, and its rolling surface will form a layer of cold work hardening, which can effectively reduce the elastic and plastic deformation of the contact surface of the grinding pair, and delay the generation or expansion of fatigue cracks, thereby improving the surface Corrosion resistance.
Chrome plating of piston rod
After the piston rod is chrome-plated, it can have a hard, smooth and corrosion-resistant surface. In order to improve the corrosion resistance of the piston rod surface, it needs to be chrome-plated. After chrome plating, the hardness of the coating of the piston rod can be as high as HV1100, and the coating is smooth, uniform in thickness, and strong in dispersion, which can greatly improve some aspects.
Tempering of the piston rod
The quenching and tempering of the piston rod is the quenching and tempering treatment of the piston rod. After the quenching and tempering treatment, the working strength of the material can be effectively improved, which is helpful for the sealing of tiny cracks on the surface and hinders the expansion of the erosion effect, thereby improving the surface corrosion resistance. . However, not all piston rods need to be quenched and tempered, so the quenching and tempering treatment should be judged according to the actual situation and materials.
