Identification and provision of requirements for the quality of the surface of the hydraulic cylinder rod in contact with the seal
The necessity of solving the problem of providing the required microprofile of the surface of the hydraulic cylinder rod in contact with the seal is revealed. It is shown that an effective method of solving this issue is the correct choice of finishing treatment of the stem surface. The results of the study of various forms of microprofiles of surfaces are presented and the most favorable for the effective operation of the "rod-seal" contact pair are identified. For this purpose, contact models describing the introduction of a rigid single protrusion of the roughness of the stem surface with a different shape of the microprofile (after polishing and diamond smoothing) into a viscoelastic half-space, considering the rheological characteristics of the sealing material, are constructed, and investigated. A study of the stress-strain state of the sealing material was performed, the stress distribution under the cylinder surface was analyzed and the topography of the surface of the chrome rod obtained after diamond smoothing was shown.