LLC «Trade House «Elma-Asterion» (Saint Petersburg, Russia):

Grigoryeva A. N., General Director, Candidate of Engineering Sciences, an@td-elma.ru

Resistance of structural materials used in the mining industry to hydroabrasive wear is one of the key factors for the durability of many mechanisms, especially agitators. When mixing concentrated slurries, rotating agitator elements interact with suspended abrasive particles of the rock. Inadequate selection of structural materials for these elements causes frequent replacements due to hydroabrasive wear and related process shutdowns. Hydroabrasive wear by solid particles occurs as a result of cyclic impacts of fine solid particles entrained in a gas or liquid flow and striking the surface of a solid body. The mechanical action of these particles is similar to abrasion and includes plastic deformation and brittle fracture. In addition to hydroabrasive wear, exposure to chemicals leads to corrosive wear. Material resistance to corrosion depends on many factors related to both the material and the corrosive solution. This paper presents the results of a study of resistance of various materials to hydroabrasive wear in a corrosive and abrasive environment. Samples made in the form of 3–4 mm thick rectangular plates were selected for the study. St3sp and 12Kh18N10T grade steels were used, as well as a composite material consisting of glass fiber and polymer binders. The test results show that resistance of the composite material is much superior to that of metal samples. This is mainly due to the inertness of polymeric materials to corrosion.

1. Tarelnyk V., Konoplianchenko I., Gaponova O., Sarzhanov B. Assessment of hydroabrasive wear resistance of construction materials with functional coatings, which are formed by resource-saving and environmentally friendly technologies. Key Engineering Materials. 2020. Vol. 864. pp. 265–277.
2. Orlik A. G., Orlik G. V., Kobernik N. V., Mikheev R. S. Arc deposition of abrasion wear-resisting coatings on the working surfaces of conveyor screws. Welding International. 2017. Vol. 31, No. 13. pp. 945–950.
3. Krasnyi V. A., Maksarov V. V., Olt Yu. The use of polymer composite materials in the friction nodes downhole oil pumps. Zapiski Gornogo Instituta. 2015. Vol. 211. pp. 71–79.
4. Morozov V. I., Goncharov A. B., Tulinov A. B. Progressive technologies for the restoration of mining and processing equipment parts. Gorny Informatsionno-analiticheskiy Byulleten'. 2006. No. 6. pp. 340–342.
5. Antoev K. P., Zarovnyaev B. N., Kristoforova A. A. An apparatus that analyzes the hydroabrasive wear of fiberglass pipes. Journal of Friction and Wear. 2017. Vol. 38, Iss. 3. pp. 208–210.
6. Shtertser A. A., Grinberg B. E. Impact of a hydroabrasive jet on material: Hydroabrasive wear. Journal of Applied Mechanics and Technical Physics. 2013. Vol. 54, Iss. 3. pp. 508–516.
7. Antoev K. P., Popov S. N. Study of resistance to hydroabrasive wear of GRP pipes with a polyurethane coating. Nauka i Obrazovanie. 2017. No. 1. pp. 87–90.
8. Seitkhanov A. M., Kaztuganova G. A., Povetkin V. V. Methods of improving the design of ground pump parts. Nauchnye Trudy Yuzhno-Kazakhstanskogo Gosudarstvennogo Universiteta im. M. Auezova. 2019. No. 4. pp. 24–32.
9. Wesling V., Reiter R., Müller T. Hydroabrasive wear on high carbide infiltration materials. IOP Conference Series: Materials Science and Engineering. 2019. Vol. 480, Iss. 1. DOI: 10.1088/1757-899X/480/1/012030.
10. Mikhalchenkov A. M., Lyalyakin V. P., Mikhalchenkova M. A. Methodology of accelerated comparative tests for abrasive wear of materials with different composition, structure and properties. Trudy GOSNITI. 2014. Vol. 116. pp. 91–96.

11. Dragunov Yu. G., Zubchenko A. S., Kashirsky Yu. V., Degtyarev A. F., et al. Steel and alloy grade guide. 7^th ed. Moscow: Mashinostroyenie, 2021. 1216 p.
12. Skrebnev V. I., Serzhan S. L., Kalugina E. V. Research of resistance to water-jet wear of plastic and steel pipes. Assessment of the main parameters that affect the wear rate of hydraulic transport systems. Plasticheskie Massy. 2020. No. 9–10. pp. 40–44.