Authors: M.L. Khazin, D.I. Simisinov, V.E. Adas

Title of the article: Analysis properties structural materials of the screen produced under the import substitution program

Year: 2024, Issue: 6, Pages: 73-79

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2024-6-73-79

Abstract: Vibrating screens are used in various industries. Despite the ease of installation, the static and dynamic forces caused by vibration must be taken into account. In the working process, the vibrating screen is subject to conditions of underload or overload, which, due to design or material flaws, can lead to the formation of fatigue cracks in the body.
Methods of research. The phase composition of the sample was studied using an XRD 7000 X-ray diffractometer (Shimadzu) with an X-ray spectral microanalysis attachment XFlash Detector 630M (Bruker Nano GmbH) and a TESCAN VEGA LMS scanning electron microscope with an Xplore30 energy-dispersive analysis attachment from OXFORD Instruments. The elemental composition of the samples was checked on a Clever B-23 universal X-ray fluorescent spectrophotometer and a SkiAps Z-902 Laser-Z laser spectrophotometer. Metallographic study was carried out on an optical microscope Olympus BX61. Vickers hardness was measured on an ITV-30-AM hardness tester.
Research results. The structure and mechanical properties of the screen body were analyzed. In samples of the material of the GIS-63 screen body, a morphologically identical metal structure is noted from fine-grained ferrite and structurally free cementite. Quantitative evaluation of the microstructure showed that the average size of ferrite grains is 9.17 – 12.13 µm, and the hardness is 140-150 HV.
Conclusion. Based on the study, it follows that the steel under study is characterized by low metallurgical quality, and its hardness meets the requirements of regulatory documents for steel grade 09G2S.

Key words: mining screening vibration steel fatigue crack grains hardness

Receiving date: 01.11.2024

Approval date: 15.11.2024

Publication date: 12.12.2024

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