Abstract
The relevance of investigating the problem of loading a diamond abrasive tool with a metallic binder to improve the efficiency of finishing treatment of a wide range of high-strength materials is addressed in the paper. The results of theoretical and experimental studies of the formation of a greasy layer on the surface of diamond wheels in the treatment of high-strength materials are shown. In the theoretical part it is proposed to consider this phenomenon in terms of the equilibrium state of electrochemical potentials at the interface of a diamond wheel and the treated surface. Dependences are revealed that help to determine greasy layer values. The practical part of this work consists in electron-microscopic, spectroscopic and X-ray diffraction studies of wheel specimens with a metallic binder in diamond grinding. Based on the results obtained the composition and structure of a greasy layer are determined. A comparison of the experimental data with the calculated values confirms the adequacy of the proposed theory. The use of combined methods to improve the efficiency of machining high-strength materials is recommended. It can help to reduce the intensity of loading and to improve the cutting properties of diamond abrasive tools with a metallic binder
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