Development of the chemical composition of the charge on the basis of alloying elements for the production of stable structural high chromium cast iron and high friction of CEMCO and BARMAK crushers operating under the influence of centrifugal forces and spare parts for corrosion-resistant pumps at Navoi NMEP the issues of casting rotors operating under severe conditions were considered.

The analysis shows that it is proposed to use heat treatment and a number of similar methods to increase the service life of the product obtained by casting in the conditions of the enterprise “NMEP” of Navoi NMMP.

Crusher, rotor, pump spare parts, friction, heat treatment, temperature, charge, alloy, white cast iron

Turakhodjaev N. D. et al. ANALYSIS OF DEFECTS IN WHITE CAST IRON //Theoretical & Applied Science. – 2020. – №. 6. – С. 675-682.

Turakhodjaev N. et al. EFFECT OF METAL CRYSTALLATION PERIOD ON PRODUCT QUALITY //Theoretical & Applied Science. – 2020. – №. 11. – С. 23-31.

Wang Y. et al. Microstructure and mechanical properties of ultra-

lightweight Mg-Li-Al/Al-Li composite produced by accumulative roll bonding at ambient temperature //Materials Science and Engineering: A. – 2020. – Т. 787. – С. 139494.

Wang Y. et al. High-strength, ductility and modulus Al–Li/B4C composite

with near nanostructure produced by accumulative roll bonding //Journal of Alloys and Compounds. – 2020. – Т. 834. – С. 155105.

Wang Y. et al. Concurrently improving uniform elongation and strength of

ultrafine-grained Al–2Li alloy //Materials Science and Engineering: A. – 2020. – Т. 792. – С. 139848.

Wang Y. et al. Microstructural evolution, precipitation behavior and

mechanical properties of a novel Al–Zn–Mg–Cu–Li–Sc–Zr alloy //Journal of Materials Research. – 2021. – С. 1-11.

Turakhodjaev N. et al. Analysis of technological solutions for reducing the

copper concentration in slags from oxygen-flare smelting of copper sulfide concentrates //Journal of Critical Reviews. – 2020. – Т. 7. – №. 5. – С. 449-452.

Bekmirzaev S., Saidmakhamadov N., Ubaydullaev М. Obtaining sand-clay casting". Theory and practice of modern //Russia. – 2016. – №. 4 (12). – С. 112.

Djahongirovich T. N., Muysinaliyevich S. N. Important features of casting systems when casting alloy cast irons in sand-clay molds //ACADEMICIA: An International Multidisciplinary Research Journal. – 2020. – Т. 10. – №. 5. – С. 1573-1580.

Бекмирзаев Ш., Саидмахамадов Н., Убайдуллаев М. ПОЛУЧЕНИЯ ЛИТЬЕ В ПЕСЧАНО-ГЛИНИСТЫЕ МЕТОДОМ //Теория и практика современной науки. – 2016. – №. 6-1. – С. 112-115.

Саидмахамадов Н. и др. ОБЩАЯ ТЕХНОЛОГИЯ ПРОИЗВОДСТВА ПОРОШКОВО КОНСТУКЦИОННЫХ МАТЕРИАЛОВ //Экономика и социум. – 2019. – №. 4. – С. 673-680.

Саидмахамадов Н. и др. ТЕХНОЛОГИЯ ПРЕДОТВРАШЕНИЯ ПОР В ОТЛИВАХ //Экономика и социум. – 2019. – №. 4. – С. 661-672.

Саидмахамадов Н., Хайдаров У., Эгамбердиев Б. УЛУЧШЕНИЕ ПОДГОТОВКИ ТЕХНОЛОГИЙ МЕТОДОМ СПЕЦИАЛЬНОГО СЛИВАНИЯ //Экономика и социум. – 2019. – №. 4. – С. 651-660.