Influence of magnetic-abrasive machining parameters on ceramic cutting tools for technological quality assurance of precision products from cold-resistant steels

Abstract

In connection with the development of the Far North and Siberia, the issues of wear resistance of equipment and technological methods for processing precision products from cold-resistant steel are of particular relevance. At low temperatures, steel exhibits a loss of ductility and toughness and an increased tendency to brittle fracture. The achievement of the required quality of machining of precision products made of cold-resistant steels is significantly influenced by the tool and the technology of its manufacture. One of such tools involved in the processing of cold-resistant steels is ceramic plates of the VOK-60 brand. This article discusses an alternative method of finishing a tool based on cutting ceramics – magnetic abrasive processing. This is a modern solution for tool processing, which allows you to obtain high quality workpieces from cold-resistant steels with minimal defects in their surface layer. The quality of the surface layer of the product during magnetic abrasive processing is influenced by many parameters, some of which will be studied in this article: electromagnetic induction, processing time, rotational speed and feed rate. The influence of these input parameters on the surface roughness of ceramic plates will be considered taking into account the combined influence on each other. The success of application of magnetic abrasive processing can be judged by the topography of the surface of the cutting ceramic plates, made using an electron microscope, as well as the results of roughness analysis using a profilometer. The data obtained during the study demonstrated the importance of individual input factors in the processing of products. Based on the results of experimental studies, recommendations have been formulated to improve the efficiency of applying the process of magneticabrasive processing in the preparation of ceramic cutting plates.