Працездатність абразивних армованих кругів

The article considers the issue of increasing the performance of abrasive reinforced wheels used in the processes of cutting and grinding metals and building materials. The analysis of the design features of wheels with smooth and rough side surfaces is carried out and their influence on cutting efficiency, thermal processes and safety of work is investigated. Physical models have been proposed to explain the reasons for tool jamming during cutting rolled metal, taking into account the elastic deformations of the material and the action of mortise forces. It is shown that the use of wheels with rough side surfaces provides microcutting with protruding abrasive grains, reduces friction, improves heat dissipation and improves the quality of the treated surface. It has been established that such wheels are characterized by greater wear resistance (by 20–30%), reduced likelihood of jamming and increased safety of operation compared to traditional wheels with smooth surfaces. The practical significance of the results obtained lies in the possibility of using them to improve the design of abrasive tools and increase the productivity and reliability of cutting processes in metallurgy, construction and mechanical engineering.