The paper presents the results of research on the development of wear-resistant coatings on the working surfaces of equipment and tools operating in conditions of intense abrasive wear. Titanium carbide alloyed high-manganese steel with a high strain hardening capacity served as the basis for coatings. The coating was made by electric arc surfacing with powder electrodes, the charge of which consisted of ferrosilicomanganese, titanium powder, graphite, and components that protect the arc from the atmosphere. The coatings consiss of manganese austenite and dispersed inclusions of titanium carbide with dimensions of ~ 1 micron. Rockwell hardness was measured my means of TK-2 hardness testers (GOST 3882-74) by indentation of a diamond cone under a load of ~ 150 N (scale C). Before measuring the hardness, the surface deposited layer was deformed using the TS-2 hardness gage. At the same time, a carbide ball with a diameter of 10 mm manufactured according to GOST 3722-81 was used as an indenter. The indentation effort was 3,000 kg. Hardness was measured both in the well and in the undeformed zones. By the difference in hardness, the degree of work hardening was calculated. The developed coatings are characterized by the capacity for strain hardening under plastic deformation conditions. It was found that the hardness of the deformed coatings exceeds the hardness of the coatings in the initial state by 57% higher. Experimental studies of abrasive wear resistance under friction conditions on a fixed abrasive were carried out by comparing the developed coatings and serial materials for surfacing. The results of the comparison of abrasive wear resistance showed that the developed coatings are characterized by wear resistance higher compared to serial high-chromium alloys for surfacing almost 2 times. The wear resistance of coatings under conditions of aero-abrasive erosion was carried out using a Kleis centrifugal accelerator in an environment of quartz sand at angles of attack of 30 °, 60 ° and 90 °. The test results showed that the highest wear resistance of the developed coatings was determined at an angle of attack of 90 °. Analysis of the surface of the coatings carried out by electron microscopy showed no signs of brittle fracture. The developed coatings can be applied to increase the durability of the working surfaces of oil and gas equipment operating in abrasive conditions.
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