07. Shemyakin A.V., Fadeev I.V., Uspensky I.A., Yukhin I.A., Chatkin M.N. Composition for Anticorrosive Treatment of Parts of Threaded Connections

doi: 10.15507/2658-4123.033.202302.256-269

Composition for Anticorrosive Treatment of Parts of Threaded Connections

Alexander V. Shemyakin
Dr.Sci. (Engr.), Professor, Professor of the Department of Organization of Transport Processes and Life Safety, Ryazan State Agrotechnological University named after P. A. Kostychev (1 Kostychev St., Ryazan 390044, Russian Federation), ORCID: https://orcid.org/0000-0001-5019-258X, This email address is being protected from spambots. You need JavaScript enabled to view it.

Ivan V. Fadeev
Dr.Sci. (Engr.), Associate Professor, Head of Mechanical Engineering Chair, Chuvash I. Yakovlev State Pedagogical University (38 K. Marks St., Cheboksary 428003, Russian Federation), ORCID: https://orcid.org/0000-0002-5863-1812, This email address is being protected from spambots. You need JavaScript enabled to view it.

Ivan A. Uspensky
Dr.Sci. (Engr.), Professor, Head of Technical Operation of Transport Chair, Ryazan State Agrotechnological University named after P. A. Kostychev (1 Kostychev St., Ryazan 390044, Russian Federation), ORCID: https://orcid.org/0000-0002-4343-0444, This email address is being protected from spambots. You need JavaScript enabled to view it.

Ivan A. Yukhin
Dr.Sci. (Engr.), Professor, Head of the Department of Automotive and Tractor Engineering and Thermal Power Engineering, Ryazan State Agrotechnological University named after P. A. Kostychev (1 Kostycheva St., Ryazan 390044, Russian Federation), ORCID: https://orcid.org/0000-0002-3822-0928, This email address is being protected from spambots. You need JavaScript enabled to view it.

Mikhail N. Chatkin
Dr.Sci. (Engr.), Professor, Professor of the Leshchankin Chair of Mobile Power Tools and Agricultural Machinery, National Research Mordovia State University (68 Bolshevistskaya St., Saransk 430005, Russian Federation), ORCID: https://orcid.org/0000-0002-3758-7066, This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract
Introduction. A review of studies on the protection of threaded connections from corrosion shows that they have leaks that contribute to the development of crevice corrosion, which leads to a decrease in the mechanical strength of threaded connections and complicates dismantling. Modern lubricants and chemical thread fixatives do not provide corrosion protection and disassembly of threaded connections over a long service life, so the development of a more effective lubricant composition is an urgent task.
Aim of the Article. Is to develop an effective lubricant composition to protect against corrosion and improve the disassembly of threaded connections.
Materials and Methods. The parts of the M10 threaded pair with a thread pitch of 1.5 mm made of St3 steel, connecting two products, (prototypes) were lubricated with grease Zh-SKa 2/6-2, lithol-24, grease + oligomer D-10TM 5% by weight, composition of litol-24 + oligomer D-10TM 5% by weight, tightened to the moment of tightening force 80 N‧m, immersed in a 3% hydrochloric acid solution at a temperature of 22‒24°С. After 8 hours, the samples were removed from the solution and left in the air for 16 hours, which represented one cycle. According to the lubrication options, the number of parallel experiments was 5. Exposure duration – 24; 48; 96; 240; 480; 720 hours, after the expiration of which 5 samples of each lubricant option were disassembled, the value of the moment of the release force was recorded, the corrosion damage was assessed, and the coefficient of friction was calculated.
Results An effective lubricant composition has been developed for processing parts of threaded connections, which increases their corrosion resistance and improves dismantling.
Discussion and Conclusion. When adding oligomer D-10TM 5% by weight in litol-24, there is a significant increase in the length of time before the appearance of foci of corrosion on the details of threaded connections and an improvement in their dismantling. Implementation of the obtained results allows to increase the reliability of threaded connections.

Keywords: threaded connection, corrosion protection, dismantling, lubrication, D-10TM oligomer

Conflict of interest: The authors declares no conflict of interest.

For citation: Shemyakin A.V., Fadeev I.V., Uspensky I.A., Yukhin I.A., Chatkin M.N. Composition for Anticorrosive Treatment of Parts of Threaded Connections. Engineering Technologies and Systems. 2023;33(2):256–269. https://doi.org/10.15507/2658-4123.033.202302.256-269

Authors contribution:
A. V. Shemyakin – scientific supervision; the formulation of the research problem.
I. V. Fadeev – developing the methods and laboratory experimental studies.
I. A. Uspensky – developing the methods and conducting industrial experimental studies.
I. A. Yukhin – carrying out calculate.
M. N. Chatkin – reviewing and analyzing the literature.

All authors have read and approved the final manuscript.

Submitted 24.03.2023; revised 24.04.2023;
accepted 10.05.2023

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