Constructive method of increasing the durability of cultivator blades recovered by surface

Abstract

Abstract The technical condition of parts is determined, on the one hand, by design parameters, and on the other, by mechanical properties, which are determined by control methods, including holographic ones. The properties of the working surfaces of parts made of various materials differ in comparatively small values of the dispersion of indicators. They correspond to the magnitudes and types of load, micro straining, load duration and can be presented in a rather narrow dispersion interval. The value of the distribution parameters of these quantities must be taken into account, first of all, when choosing a material. It is determined by the reliability conditions that the onset of the permissible load limit is achieved by proportional loading of the entire structure and is achieved with a micro deformation value for cultivator blades of 2.1-3.2μm. The limiting value of the micro deformation parameter is a function of a given tolerance for permanent deformation of the structure and is difficult to determine by conventional methods. In accordance with the developed methodology for the study of parts made of different materials, for example: graycastiron, aluminum, polymers (polyethylene, polyamide), carbon fiber, as well as a reinforced metal polymer, at the same time, computer holograms are recorded in each case. The studies used the entire range of recorded loads.