Corrosion-fatigue resistance of sucker rods with metallopolymer coatings

Keywords

sucker rod, stress, corrosive medium, fatigue, metallopolymer coatings.

Cite as

Krechkovska H. V., Fedorovych Ya. T., Kopei B. V., Kopei I. B., and Venhrynyuk T. P. Corrosion-fatigue resistance of sucker rods with metallopolymer coatings. Physicochemical Mechanics of Materials. 2024. 60(5), 054-058.

https://doi.org/10.15407/pcmm2024.05.054

Abstract

The results of fatigue tests of samples from full-scale sucker rods made of 15Kh2HМF steel in various corrosive environments are presented and compared with specimens made of 20N2M, 15Kh2NМF and 15N3MA steels. It is shown that limited endurance limit of the tested rods of 15Kh2HМF steel in formation water is by 22 and 12% lower than that of 20N2М and 15Kh2NМF steels, respectively, and in an environment simulating the action of H₂S, it is lower by 36 and 35%. The method of complex surface strengthening sucker rods has been developed and tested, which combines shot blasting and application of metal-polymer coatings. High efficiency of the latter is shown.

References

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