The article deals with the method of obtaining a hard chromium coating on details of the "body of rotation" type with the use of an abrasive tool. The influence of the composition and hardness of the elastic abrasive tool on the results of galvanomechanical chromium plating of rotating cylindrical parts has been studied. Binder compositions for an abrasive tool used to improve the roughness of the deposited chromium layer have been developed. A series of experimental studies has been carried out with chromium plating of steel cylindrical parts with simultaneous abrasive processing. Beforehand, an abrasive tool with previously developed binder formulations was manufactured. The obtained results of the influence of the characteristics of the abrasive tool and its pressing force on the chromium-plated part on the quality of the precipitated chromium made it possible to determine the optimum modes for obtaining a coating of the required thickness. Also, a suitable abrasive tool has been chosen to obtain a coating of proper quality.

The article deals with the method of obtaining a hard chromium coating with using abrasive tool. The influence of the pressing force of the abrasive tool, the rotation speed of the part, the temperature of the electrolyte on the results of galvanomechanical chromium plating of rotating cylindrical parts has been studied. A special abrasive tool has been developed for use in the galvanic mechanical coating of metal parts. The tool is made on a polymer bond. The effect of the electrolyte temperature on the quality of the precipitated chromium is revealed.

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Показана возможность применения гиперболической модели расчета термохимических характеристик (стандартной молярной теплоемкости, стандартной молярной энтропии) к системе V-О. Использование модели позволило уточнить имеющиеся экспериментальные данные по оксидам ванадия и предсказать значения термохимических характеристик для малоизученных экспериментально соединений. Ключевые слова: ванадий, оксиды, теплоемкость, энтропия, математическое моделирование. Никифорова А.К., Груба О.Н. Моделирование и расчет термохимических характеристик кристаллических оксидов ванадия при стандартных условиях

The possibility of applying a hyperbolic model for calculating thermodynamic characteristics (the standard molar heat capacity, standard molar entropy) to the V–O system is shown. For calculation of the molar specific heat and entropy within the bounds of the model the general concept has been used: a thermodynamic parameter is divided into two components. The first component depends on the molar mass of a compound, the second one is determined by inter particle interaction. The dependence of the inverse value for the interaction heat capacity (entropy) on composition is of linear character within one region of quasi-equilibrium solid solutions (one region combines compounds with the same or similar structure type).The use of the model allowed refining the available experimental data on vanadium oxides and predicting the values of thermodynamic characteristics for compounds poorly studied in experiment.