Open Access Open Access  Restricted Access Subscription or Fee Access

Flame Spraying of Polymer-Abrasive Composites

Yu. Korobov, M. Belotserkovsky, A. Grishchenko

Abstract


Polymer-based abrasive tools are distinguished by higher elasticity and resistance to chemically active media compared to tools with metal and ceramic binders. The former are effective at processing complex-profile and non-rigid surfaces. Tools based on coatings containing abrasive phenol- formaldehyde/epoxy resins and vulcanites are characterized by high cost and toxicity. In this paper, a study of composite flame-sprayed coatings, consisting of thermoplastic polymers and silicon carbide (volume ratio of 50-50), was conducted. Changes in adhesive strength, surface morphology, and wear resistance when varying spraying modes were evaluated. A rational range of technological parameters (surface pretreatment, oxidant-fuel ratio in the spray jet, coating cooling rate, ratios of abrasive and polymer particles) is established. This corresponds to the sprayed coating’s higher level of adhesion strength and wear resistance. An abrasive-polymer tool consisting of epoxy resin and an abrasive filler was used as an analogue. Full-scale tests on a root-crop cleaning machine showed that the wear of the developed thermal sprayed coatings did not exceed the permissible value for the analogue’s average service life.


Full Text:

PDF

References


B.E. Pini, “Abrasive-polymer tools for machining parts,” Mechanical engineering and en-gineering education, Vol. 47, No. 2 (2016), p. 18–23.

S.I. Dyadya, “Substantiation of the choice of polymer-abrasive tool for finishing opera-tions,” New materials and technologies in metallurgy and mechanical engineering. Zapo-rozhye: Publishing House of the Zaporizhzhya Nat. tech. university No. 2 (2010), p. 145–148.

Spare parts for C/E PP-30 potato peeler. [https://www.esposervice.ru/documents/instructions/la-minerva/kartofelechistka-pp5-10-20-30-50-.Access date 02/24/2022].

A. Chih, A. Anson-Casaos, J.A. Puertolas “Frictional and mechanical behavior of UHMWPE composite coatings,” Tribology International, No. 116 (2017), p. 295–302.

Garber M.I. “Progressive methods of surface preparation,” Journal of the All-Union Chemical Society, Vol. 25, No. 2(1980), p. 129 - 137.

Pleskachevsky Yu.M. “Modern problems of the development of the science of polymeric materials, in: Problems of modern materials science: Scientific studies digest (Kyiv: Nau-kova Dumka, 1998), 82 p.

Khain I.I. Theory and practice of metal phosphating (Leningrad: Chemistry, 1973), 240 p.

Yu. Korobov and M. Belotserkovskiy, Flame Spraying of Polymers: Distinctive Features of the Equipment and Coating (in: Applications Polymeric and Nanostructured Materials: Synthesis, Properties, and Advanced Applications, ed. by Aparna Thankappan et al), (Ap-ple Academic Press: USA-Canada, 2018) pp. 235-252.

M.A. Belotserkovsky, A.V. Chekulaev “Influence of regimes of flame spraying with pol-ymeric cords on the properties of formed coatings” Bulletin of the Polotsk State University, Series V. Industry, Applied Sciences, No. 11(2014), p. 91 - 96.

Yu.A. Lipatov, V.V. Shilov, X-ray methods for studying polymer systems (Kiev: Naukova Dumka, 1982), 285 p.




DOI: https://doi.org/10.37591/jopc.v11i3.7228

Refbacks

  • There are currently no refbacks.