| Popis: |
The article provides an overview of the wear of the working bodies of agricultural machines operating in soil conditions. The factors affecting their wear are considered, as well as the search for methods of strengthening and durability of working bodies working on various soils, including soils clogged with stones. The intensity of destruction of the surface layer of a material depends on many factors that are interconnected: these are specific pressure, the amount and abrasiveness of solid particles participating in the wear process as the main agent of local destruction of the material and other factors. When processing the soil, the working bodies of tillage machines interact with it and undergo intense wear, that is, the process of destruction and separation of material from the surface of a solid body during friction, which manifests itself in a gradual change in the size and shape of the body, therefore, the search for modern methods of hardening based on innovative technologies is one of the important tasks of hardening. Among the numerous methods for increasing the wear resistance of working bodies operating under speed conditions in the presence of sources of contamination of the cutting surface, without changing the dimensions, it is possible to use, in addition to volume hardening, magnetic-pulse surface hardening and hardening by a laser beam. One of the common factors for these types of processing is structural changes in the surface layer caused by the influence of fields, heating and cooling of the material. Each of the processing methods has certain advantages and disadvantages. To consider the issue of increasing the wear resistance of parts and tools for processing and loosening the soil, it is necessary to analyze the characteristics of the most frequently used methods. As modern innovative technologies are created, it is possible to conduct research on strengthening the working bodies of agricultural machines that work with soil using modern methods. The development and application of modern hardening technologies for these working bodies will make it possible to evaluate and select the most optimal hardening methods. |
