In this article, the effects of ligatures and modifiers on increasing the fluidity during the production of thin-walled castings from tin–copper alloys, as well as the effect of sodium tetraborate Na₂B₄O₇ in cleaning the alloy from slags, are studied. The advantages of the centrifugal casting method, the influence of additives, and the effect of the gypsum mold temperature on the thinness and thickness of casting walls and on the quality of jewelry products are analyzed. Based on the experimental results, a technology for improving fluidity is proposed.

Copper, centrifugal method, casting, sodium tetraborate

Selli, N. T., & Ozgü, C. I. (2020). The effect of minor element addition on thin walled brass casting. La Metallurgia Italiana, 112(11), 23-35.

Tursunbaev, S., Turakhodjaev, N., Turakhujaeva, S., Ozodova, S., Hudoykulov, S., & Turakhujaeva, A. (2022, August). Reduction of gas porosity when alloying A000 grade aluminum with lithium fluoride. In IOP Conference Series: Earth and Environmental Science (Vol. 1076, No. 1, p. 012076). IOP Publishing.

Xiang, L., Tao, J. Q., Chen, Q., Zhao, G. Z., Zhang, F. Y., Chai, S. X., ... & Li, F. (2022). Mechanical properties and microstructure of thin-walled Al-Cu alloy casting. Strength of Materials, 54(2), 302-308.

Witasiak, D., Garbacz-Klempka, A., Papaj, M., Papaj, P., Maj, M., Piękoś, M., & Kozana, J. (2023). Effect of Alloying Additives and Moulding Technology on Microstructure, Tightness, and Mechanical Properties of CuSn10 Bronze. Materials, 16(24), 7593.

Tursunbaev, S., Umarova, D., Kuchkorova, M., & Baydullaev, A. (2022). Study of machining accuracy in ultrasonic elliptical vibration cutting of alloyed iron alloy carbon with germanium. Journal of Physics: Conference Series, 2176(1), 012053. https://doi.org/10.1088/1742-6596/2176/1/012053

Sarvar, T., Nodir, T., Mardonov, U., Saydumarov, B., Kulmuradov, D., & Boltaeva, M. (2024). Effects of germanium (Ge) on hardness and microstructure of Al–Mg, Al–Cu, and Al–Mn system alloys. International Journal of Mechatronics and Applied Mechanics, (16), 179–184.

Kidalov, N. A., Zhiltsov, N. P., Gabelchenko, N. I., Belov, A. A., Grigoreva, N. V., & Zharkova, V. F. (2021, April). Investigation of the influence of softening modifiers on the knockout of investment castings. In IOP Conference Series: Materials Science and Engineering (Vol. 1129, No. 1, p. 012006). IOP Publishing.

Turakhujaeva, A., Tursunbaev, S., Tashbulatov, S., Turaev, A., Mardonakulov, S., Murodqosimov, R., ... & Murodov, S. (2025, September). Mathematical Modeling of the Effect of the Lithium Element on the Fluidity of Al-Si and Al-Cu Alloys. In International Conference on Reliable Systems Engineering (pp. 62-69). Cham: Springer Nature Switzerland.

Smirnov, O. M., Rud, O. D., Fikssen, V. N., Skorobagatko, Y. P., Monastyrska, T. O., Goryuk, M. S., ... & Yashchenko, O. V. (2023). Impact of MHD-processing on technological properties of high-strength casting Al− Cu alloys. Metallofiz Noveishie Tekhnol, 45(9), 1125-1139.Sabau, A. S. (2006). Alloy shrinkage factors for the investment casting process. Metallurgical and Materials Transactions B, 37(1), 131-140.

Garbacz-Klempka, A., Kozana, J., Piękoś, M., Papaj, P., Papaj, P., & Perek-Nowak, M. (2018). Influence of modification in centrifugal casting on microstructure and mechanical properties of silicon bronzes. Archives of Foundry Engineering, 18(3), 11-18.

Tursunbaev, S., Turakhujaeva, A., Mardonov, U., Mardonakulov, S., Saidova, M., Murodqosimov, R., & Kudratkhodjaeva, N. (2025). ANALYSING THE ALTERNATIONS IN THE ALUMINIUM ALLOY PROPERTIES UNDER THE INFLUENCE OF SILICON AND GERMANIUM ALLOYING ELEMENTS. International Journal of Mechatronics & Applied Mechanics, (21).