The relationship between the grain width of black silicon carbide grinding powder and the test sieve mesh size

The study of the morphology of abrasive materials should be considered an urgent task because the shape and size of the abrasive grains affect the process of abrasion and surface quality. Grinding powders are graded using sieve analysis, with the grain width being the main geometrical parameter for grain separation. The paper describes the relationship between the test sieve mesh size and the average grain width of the grinding powder (black silicon carbide grit F36–F180) retained on the test sieve after sieving. It is established that for each grit the relationship between the average grain width and the test sieve mesh size is described by a second degree polynomial. When determining the relationship between all the average sizes of the grain width and the test sieve mesh sizes it became clear that the average sizes of the particles retained on the second test sieve do not follow the general rules, which can be explained by the conditions of their formation. If this data is excluded from the total sample, the relationship between the average width of the grains retained on the sieves and the test sieve mesh size can be described as directly proportional. The obtained functional relationships can be used for determining the average grain width when performing sieve analysis according to the GOST P 52381 standard. дними размерами ширины зерен и размерами ячеек контрольных сит из общей закономерности выпадают средние размеры остатков шлифовальных порошков на втором контрольном сите, что объясняется условиями их формирования. При исключении этих данных из общей выборки взаимосвязь между средней шириной зерен остатков на ситах и размером ячеек контрольных сит описывается прямой пропорциональной зависимостью. Полученные функциональные зависимости могут быть использованы для определения средней ширины зерен шлифовальных порошков при рассеве на контрольных ситах по ГОСТ Р 52381. 

References

[1] Bakul’ V.N. Chislo zeren v odnom karate — odna iz vazhneishikh kharakteristik almaznogo poroshka [The number of grains in a karate — one of the most important characteristics of diamond powder]. Sinteticheskie almazy [Synthetic diamonds]. 1976, no. 4, pp. 22–27.

[2] Nikitin Iu.I., Uman S.M., Iaroslavskaia S.S. Issledovanie protsessov sitovoi klassifikatsii mikroporoshkov iz sinteticheskikh almazov [Investigation of processes sieve classification micropowders of synthetic diamonds]. Sverkhtverdye materialy [Journal of Superhard Materials]. 1988, no. 6, pp. 21–24.

[3] Nosenko V.A., Makushkin I.A., Shegai A.A. Statisticheskie parametry geometricheskikh razmerov zeren mikroshlifporoshkov karbida kremniia [Statistical parameters of the geometric dimensions of the grains of silicon carbide powders microsection]. Izvestiia VolgGTU. Ser. Progressivnye tekhnologii v mashinostroenii [Proceedings VSTU. Ser. Advanced technologies in engineering] 2011, no. 13, pp. 32–34.

[4] Nosenko V.A., Nosenko S.V. Tekhnologiia shlifovaniia [Grinding Technology]. Volgograd, VPI (filial) VolgGTU publ., 2011. 424 p.

[5] Nosenko V.A., Rybanov A.A., Makushkin I.A., Shegai A.A., Bukshtanovich K.A. Programma dlia avtomatizirovannogo opredeleniia geometricheskikh parametrov shlifoval’nogo zerna po fotografii «Zerno NM VPI» [The program for the automated determination of the geometric parameters of the grinding grain for photos «Grain NM FS»]. Certificate of state registration of the computer no. 2011610144, 11 Janyary 2011. RF, VolgGTU.

[6] Nosenko V.A., Aleksandrov A.A. Opredelenie geometricheskikh parametrov abrazivnykh zeren [Determining geometrical parameters of the abrasive grains]. Innovatsionnye tekhnologii v obuchenii i proizvodstve: materialy 8 vserossiiskoi nauchno-prakticheskoi konferentsii, Kamyshin, 23–25 noiabria 2011 [Innovative technologies in teaching and production: Materials 8 All-Russian scientific-practical conference, Kamyshin, 23–25 November 2011]. In 3 vol. Vol. 2. Volgograd, KTI (filial) VolgGTU publ., 2012, pp. 110–113.

[7] Nosenko V.A., Aleksandrov A.A. Korreliatsiia geometricheskikh parametrov zeren v probakh shlifoval’nogo poroshka iz karbida kremniia chernogo marki 54SF60 [The correlation of geometric parameters of the grinding grains in the powder samples of silicon carbide 54SF60 black mark]. Materialy Mezhdunarodnoi nauchno-tekhnicheskoi konferentsii (Briansk, 2014 g.) [Proceedings of the International Scientific and Technical Conference(Bryansk, 2014)]. Briansk, NDM publ., 2014, pp. 3–7.

[8] Nosenko V.A., Aleksandrov A.A. Vzaimosviaz’ mezhdu geometricheskimi parametrami zeren shlifoval’nogo poroshka i razmerom iacheek kontrol’nykh sit [Relationship between geometrical parameters of grains in grinding powder and cell size of test sieves]. Izvestiia Kabardino-Balkarskogo gosudarstvennogo universiteta [Proceeding of the Kabardino-Balkarian State University] 2013, vol. III, no. 6, pp. 54–56.

[9] Nosenko V.A., Aleksandrov A.A., Ganshu E.F. Geometricheskie parametry zeren shlifoval’nogo poroshka karbida kremniia chernogo 54CF60 proizvodstva Volzhskogo abrazivnogo zavoda [Grain geometric parameters of grinding powders of black silicon carbide 54cf60 produced by Volzhsky abrasive plant]. Sovremennye problemy nauki i obrazovaniia [Modern problems of science and education]. 2014, no. 3. Available at: http://www. science-education.ru/117-12798 (accessed 1 April 2015).