ПОФРАКЦІЙНО-ОСЕРЕДНЮВАЛЬНИЙ МЕТОД ВИЗНАЧЕННЯ ЗОВНІШНЬОЇ ПИТОМОЇ ПОВЕРХНІ ВИСОКОМІЦНИХ ШЛІФПОРОШКІВ СИНТЕТИЧНОГО АЛМАЗУ

• Datum: 2025
• Hauptverfasser: Петасюк, Григорій, Сирота, Юрій, Петасюк, Ольга, Смірнова, Анжела
• Format: Artikel
• Sprache: Ukrainisch
• Veröffentlicht: Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины 2025
• Online Zugang: http://altis-ism.org.ua/index.php/ALTIS/article/view/436
• Назва журналу: Tooling materials science

A new indirect-analytical method for determining the external specific surface area of high-strength synthetic diamond grinding powders has been created. The method is based on the well-known from publications fractional-averaging approach to indirect-analytical analytical determination of technological properties of high-strength synthetic diamond grinding powders. The main idea of the proposed new method is to take into account the features of the real 3D-morphology of grains of such grinding powders. The possibility and feasibility of using in similar problems in the same computational sense, both a methodological scheme with an extrapolation-affine 3D-model of grains and a methodological scheme with a real 3D-shape of grains. The proposed methodological scheme allows taking into account the real morphology of the grains of such grinding powders, which ensures greater reliability of the obtained indicators of their technological properties. The practical application of the proposed new method for determining the external specific surface of the standard DSTU 3292–95 high-strength synthetic diamond grinding powder AC400 500/400 is illustrated. The new method we proposed was used as a basis for comparison. The value of the external specific surface of the specified grinding powder, calculated by this method, was 4.3213 m2/kg. The use of the commonly used method for this purpose gave the result of 4.1324 m2/kg. Comparative analysis showed that the commonly used known method gives 1.046 times (4.37%) lower values of the external specific surface of the specified grinding powder than the proposed new method. This indicates the superiority of the proposed new method for determining the external specific surface area of high-strength grinding powders of synthetic diamond.