| Abstrakt: |
Grinding is one of the basic finishing operations, which allows high dimensional accuracy of the workpiece. It has a strong impact on the properties of the machined surface. Well conducted grinding process allows effective interactions of the workpiece with other surfaces, carrying transfer loads and the presence of tribological properties. Finishing operations are one of the last stages of the manufacturing process. During the production of an object, it often takes nearly 70% of the manufacturing time. The intensive development of metallurgy makes it possible to create more and more new materials, which necessitates the creation of new technologies for finishing the surfaces of these materials. Therefore, intensive research is being conducted to further improve the grinding process. Enhancement of the grinding process includes optimization of technological parameters, selection of coolant and appropriate cooling of the machining zone or tool, construction of new types of abrasive tools and modeling of the process itself. This is especially important when machining hard-to-machine materials, for example Inconel 625 steel. In this case, typical technological solutions do not always allow to obtain the desired surface topography properties. Therefore, a novel type of an abrasive wheel has been proposed. This tool is composed of grains characterized by different size. This feature results in lower damage of the working surface. The use of 80 µm, 100 µm and 120 µm grains in a single wheel also leads to an improved manufacturing process. In this paper, the results of an experimental study of grinding the surface of Inconel 625 with conventional and multigranular abrasive wheels are presented. It also analyzes the effect of silicon carbide grain size on the geometric structure of the Inconel 625 surface, the load-bearing ratio and the wear condition of the grinding wheel. [ABSTRACT FROM AUTHOR] |
