The hydraulic piston rod, which known as hydraulic cylinder rod also, is made of chrome plated bar, which is mainly manufactured by precision drawing, fine grinding and high-precision polishing during operation, and its technical indicators meet and exceed the basic standards.
Chrome plated bar can be directly used in oil cylinders, cylinders, shock absorbers, textile printing and dyeing, printing machinery guide rods, die-casting machines, injection molding machine guide rods and ejector rods, four-column press guide columns, fax machines, printers and other modern office machinery guide shafts, etc. and components of other industrial products which precision slender chrome plated shafts are required.
Among these applications, the most popular is be used as the key material to manufacturer the hydraulic cylinders together with the honed tube for various machineries. The chrome plated rod is used to produce hydraulic piston rod, while honed tube is used to manufacture the hydraulic cylinder barrel as the cylinder body.
Key points of Hydraulic Piston Rod Design
1. The use and workpiece conditions of the equipment.
2. Structural characteristics, load conditions, required speed, stroke and action requirements of the working mechanism.
3. The selected working pressure of the hydraulic system.
4. The current status of materials, accessories and processing technology.
5. Relevant technical standards and technical specifications, etc.
6. Try to make the piston rod bear a very large load under the multi-tension state, and have good longitudinal stability under the multi-pressure state.
Rolling process of chrome plated rods
The chrome plated bar for hydraulic piston rod is formed by rolling, and a layer of cold hardening layer will be formed on the rolling surface, 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 hydraulic cylinder rod
After the hydraulic cylinder rod is chrome-plated, it can have a hard, smooth, corrosion-resistant surface. To improve the corrosion resistance of the piston rod surface, it needs to be chrome-plated. After chrome plating, the hardness of the coating on the piston rod can be as high as HV1100, and the coating is smooth, uniform in thickness, and strong in dispersion, so that it can be greatly improved in certain aspects.
Q&T heat treatment for the chrome plated bar for cylinder 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 helps to close the micro cracks on the surface, hinders the expansion of erosion, and thus improves 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.
