How to select the material of each part of the cylinder?

The cylinder end cover is provided with an air inlet and an exhaust port, and some are also provided with a buffer mechanism in the end cover. A sealing ring and a dust-proof ring are arranged on the end cover of the rod side to prevent air leakage from the piston rod and to prevent external dust from mixing into the cylinder. A guide sleeve is arranged on the end cover of the rod side to improve the guiding accuracy of the cylinder, bear a small amount of transverse load on the piston rod, reduce the downward bending of the piston rod when it extends out, and prolong the service life of the cylinder. The guide sleeve usually uses sintered oil-bearing alloy and forward inclined copper casting. In the past, malleable cast iron was commonly used for the end cover. Now, in order to reduce the weight and prevent rust, aluminum alloy die casting is often used, and brass material is used for the micro cylinder.

The inner diameter of the cylinder represents the output force of the cylinder. The piston should slide back and forth smoothly in the cylinder, and the surface roughness of the inner surface of the cylinder should reach ra0.8um. The inner surface of the steel pipe cylinder should also be plated with hard chromium to reduce the friction resistance and wear, and prevent corrosion. In addition to high carbon steel pipe, the cylinder is made of high strength aluminum alloy and brass.

Cylinder with magnetic switch or used in corrosion-resistant environment shall be made of stainless steel, aluminum alloy or brass. Combined cylinder generally refers to the gas-liquid damping cylinder and gas-liquid supercharging cylinder formed by the combination of cylinder and hydraulic cylinder. As we all know, the working medium of cylinder is compressed air, which is characterized by fast action, but the speed is not easy to control. When the load changes greatly, it is easy to produce the phenomenon of crawling and self-propelled; The combination cylinder will avoid this situation.