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Rakhimov U. T.
"Materialshunoslik va mashinasozlik" kafedrasi assistentlari
Urazbayev T. T.
"Materialshunoslik va mashinasozlik" kafedrasi katta o'qituvchisi
Avdeeva A.N. texnika fanlari nomzodi, dotsent Materialshunoslik va mashinasozlik kafedrasi dotsenti
Valieva D.Sh.
"Materialshunoslik va mashinasozlik" kafedrasi assistenti
Xo'jaxmedova X. S.
"Materialshunoslik va mashinasozlik" kafedrasi katta o'qituvchisi
Toshkent davlat transport universiteti O'zbekiston, Toshkent
ISSIQLIK BILAN ISHLOV BERISH TA'SIRIDA GARFILD PO'LATINING MIKRO TUZILISHINI TAHLIL QILISH
Annotatsiya. Ushbu maqolada Gadfild po'latning eritish texnologiyasi ko'rsatilgan, unda quyma sifatini ko'taruvchi harorat rejimlari mavjud. Skanerlovchi elektron mikroskopida po'latning tuzilishi bo'yicha tadqiqotlar olib borilgan.
Kalit so'zlar: Gadfild Po'lati, eritish texnologiyasi, TESCAN VEGA 3 mikroskopi, tigel pechi.
Rakhimov U. T. assistant
"Materials Science and Mechanical Engineering" department
Urazbayev T.T. senior teacher
"Materials Science and Mechanical Engineering" department Avdeeva A.N., candidate of technical sciences, associate professor
associate professor
Department of Materials Science and Mechanical Engineering
Valieva D.Sh. assistant
"Materials Science and Mechanical Engineering" department
Khojakhmedova H.S. senior teacher
"Materials Science and Mechanical Engineering" department
Tashkent State Transport University Uzbekistan, Tashkent
ANALYSIS OF THE MICROSTRUCTURE OF GARFIELD STEEL UPON EXPOSURE TO HEAT TREATMENT
Abstract. This article describes Gadfield's steel melting technology, which features temperature regimes that enhance casting quality. Researches on the structure of steel were carried out under the scanning electron microscope.
Key words: Gadfield Steel, melting technology, TESCAN VEGA 3 microscope, crucible furnace.
Kirish
Gadfild Po'lati taxminan 13% marganets (Mn) va 1% uglerodni (C) o'z ichiga olgan legirlangan Po'latdir. Yeyilishga yuqori qarshilikka ega, yuqori bosim va zarba yuklariga bardosh bera oladi, yuqori plastisitiklikka ega. Po'lat 110G13L quyma olish uchun yeyilishga bardoshli, yuqori marganetsli, austinitli Po'lat sifatida tasniflanadi. Unga bir vaqtning o'zida yuqori bosim va zarba yuklari ta'sir qilganda yeyilishga yuqori qarshilikka va shu bilan birga kuchli birikishga ega.
Metodologiya
Laboratoriya sharoitida 110G13L Po'latni eritish texnologiyasi induksion tigel pechida ishlab chiqilgan (1-rasm). Ushbu Po'latning tuzilishini o'rganish uchun namunalar "havoda o'zi qotuvchi qolip aralashmasi"dan yasalgan qolipga gravitatsion quyish usuli bilan quyilgan (2-rasm). Metallni qolipga quyish 1410 °C haroratda amalga oshirilgan.
Po'lat strukturasini o'rganish uchun namunalar 3-rasmda ko'rsatilgan shaklda kesilgan. Namunalarni issiqlik bilan ishlov berish qarshiliklar pechida 1-
1-rasm. Induksion tigel pechi 2-rasm. To 'Idirish uchun tayyor (XTS)
shakli
3-rasm.Namuna tayyorlash uchun quyrna
4-rasm. TESCAN VEGA 3 mikroskopi
1-jadval. Turli xil namunalar guruhlari uchun tavsiya etilgan qattiqlashuv harorati
№ C miqdori, % Qattiqlashuv Tutib turish
harorati, С0 vaqti, ch
1 1,3909 800 30 minut
2 1,3909 1100 30 minut
Bo'limlar standart protsedura bo'yicha tayyorlangan. Po'lat konstruktsiyani o'rganish TESCAN VEGA 3 skanerlash elektron mikroskopida o'tkazildi (4-rasm). Issiqlik bilan ishlov berish rejimiga qarab Gadfild po'latining mikro tuzilmalari 5 va 6-rasmlarda ko'rsatilgan.
, .- -4 ' y ч Л ■ t '5P' • in • ■ Ji JûâJ > лЩШГ ^ .V 7Г
_ TV . A 'éV ^ Щ -V' * <f). & \ /'{/rf 'V ' 11 / ¡¿/¿S ¿¿[Мм?- aJpEEEÏ' /^f / M > * Ш^К - ЕИЯ
a б
5-rasm. 110G13L po'latning mikro tuzilishi (a) issiqlik bilan ishlovsiz, (b) issiqlik bilan ishlov berish (T = 800°S, ushlab turish vaqti 30 minut)
JL е Jm
X'tf'4 М^НЦН B-^iIM'C J
а б
6-гasm - 110G13L po'latning mikro tuzilishi (a) issiqlik bilan ishlovsiz, (b) issiqlik bilan ishlov berish (T = 1100°S, ushlab turish vaqti 30 minut)
XULOSA
Taqdim etilgan 110G13L po'latining mikro tuzilishi ko'rsatkichlarida 800 °C haroratda karbidlarning uzoq qo'shilishi mavjud va saqlanib qolganligini ko'rish mumkin. Tuzilishda deyarli o'zgarishlar yo'q va 1100 °C haroratda karbidlarning ignaga o'xshash qo'shimchalari yumaloq bo'lib, eriy boshlaydi. Shu sababli, karbidlarning to'liq erishi uchun ushlab turish vaqtini oshirish kerak.
Adabiyotlar:
1. Zhurakulovich, A. S., & Shavkatovna, V. D. (2021). Investigation of heat load parameters of friction pairs of vehicle braking systems. Web of Scientist: International Scientific Research Journal, 2(12), 483-488.
2. Nikolayevna, A. A. (2022). AEROGELS BASED ON GELLAN HYDROGELS. Innovative Technologica: Methodical Research Journal, 3(06), 32-39.
3. Малышев, И. В., Рахимов, У. Т., & Руднев, В. С. (2018). ЗАЩИТНЫЕ ПОКРЫТИЯ ZRO2+ TIO2 НА ТИТАНЕ, СФОРМИРОВАННЫЕ МЕТОДОМ ПЛАЗМЕННО-ЭЛЕКТРОЛИТИЧЕСКОГО ОКСИДИРОВАНИЯ. In ЧЕТВЕРТЫЙ МЕЖДИСЦИПЛИНАРНЫЙ НАУЧНЫЙ ФОРУМ С МЕЖДУНАРОДНЫМ УЧАСТИЕМ" НОВЫЕ МАТЕРИАЛЫ И ПЕРСПЕКТИВНЫЕ ТЕХНОЛОГИИ" (pp. 500-504).
4. Sh, V. D., Erkinov, S. M., Kh, O. I., Zh, A. S., & Toirov, O. T. (2022). IMPROVING THE TECHNOLOGY OF MANUFACTURING PARTS TO REDUCE COSTS. Web of Scientist: International Scientific Research Journal, 3(5), 1834-1839.
5. Sharifxodjaeva, X. A., Erkinov, S. M., Sh, V. D., & Kuchkorov, L. A. (2022). ON THE BASIS OF COMPUTER SIMULATION OF THE DESIGN OF RIFTS FOR STEEL CASTINGS OF COMPLEX CONFIGURATION. Web of Scientist: International Scientific Research Journal, 3(5), 1991-1995.
6. Kayumjonovich, T. N. (2022). NON-METALLIC INCLUSIONS IN STEEL PROCESSED WITH MODIFIERS. Web of Scientist: International Scientific Research Journal, 3(5), 1848-1853.
7. Kayumjonovich, T. N. (2022). DEVELOPMENT OF A METHOD FOR SELECTING THE COMPOSITIONS OF MOLDING SANDS FOR CRITICAL PARTS OF THE ROLLING STOCK. Web of Scientist: International Scientific Research Journal, 3(5), 1840-1847.
8. Urazbayev, T. T., Tursunov, N. Q., Yusupova, D. B., Sh, V. D., Erkinov, S. M., & Maturaev, M. O. (2022). RESEARCH AND IMPROVEMENT OF THE PRODUCTION TECHNOLOGY OF HIGH-MANGANESE STEEL 110G13L FOR RAILWAY FROGS. Web of Scientist: International Scientific Research Journal, 3(6), 10-19.
9. Ruzmetov, Y., & Valieva, D. (2021). Specialized railway carriage for grain. In E3S Web of Conferences (Vol. 264, p. 05059). EDP Sciences.
10. Мелибоева, М. А., Валиева, Д. Ш., Эркинов, С. M., & Кучкоров, Л. А. (2022). СОВЕРШЕНСТВОВАНИЕ ТЕХНОЛОГИИ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ДЛЯ СНИЖЕНИЯ СЕБЕСТОИМОСТИ. Oriental renaissance: Innovative, educational, natural and social sciences, 2(5-2), 796-802.
