The quality of High Precision Hard Chrome Plated Rod will directly affect the quality of its products to a certain extent, so in the process of selection, it is necessary to pay attention to the processing of its piston rod, which can improve the corrosion resistance of its surface and delay fatigue The generation or expansion of cracks, thereby improving the fatigue strength of the cylinder rod.
High Precision Hard Chrome Plated Rod will be effectively formed through its rolling, and the rolling surface of the entire equipment will form a layer of cold hardening layer, in order to reduce the elastic and plastic deformation of the contact surface of the grinding pair during use, thereby improving Improve the wear resistance of the surface of the cylinder rod, while avoiding burns caused by grinding. After rolling, the reduction in surface roughness values improves fit properties.
To a certain extent, the piston rod is a connecting part that supports the work of the piston. When it is used, most of it will be used in the cylinder and cylinder motion execution parts. It is a moving part with frequent movements and high technical requirements. Taking the hydraulic cylinder as an example, it consists of cylinder barrel, piston rod (cylinder rod), piston and end cover.
The quality of the piston rod will directly affect the life and reliability of the entire product to a certain extent. The processing requirements of the piston rod are relatively high, and the surface roughness requirement is Ra0.4~0.8um, and the requirements for coaxiality and wear resistance are strict. The basic feature of the cylinder rod is the processing of the slender shaft, which is difficult to process and has always troubled the processing personnel.
The rolling process adopted by the piston rod is an efficient and high-quality process measure. After rolling, the surface roughness of the cylinder rod is reduced from Ra3.2-6.3um before rolling to Ra0.4-0.8um. The surface hardness of the rod is increased by about 30%, and the fatigue strength of the cylinder rod surface is increased by 25%. The service life of the oil cylinder is increased by 2 to 3 times, and the efficiency of the rolling process is increased by about 15 times compared with the grinding process.
