title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¸ÑÐ¸Ð½ ÑÐ°Ð·ÑÑÑÐµÐ½Ð¸Ñ ÐºÐ¾ÑÐ¿ÑÑÐ° Ð½Ð°Ð³Ð½ÐµÑÐ°ÑÐµÐ»Ñ ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½Ð¾Ð³Ð¾ Ð¸Ð· ÑÑÐ³ÑÐ½Ð° Ð¼Ð°ÑÐºÐ¸ Ð¡Ð§15
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Investigation of the causes of destruction of the centrifugal supercharger housing made of cast iron
Creators: name: ÐÐ¾ÑÐ¸ÑÐ¾Ð², ÐÑÑÐµÐ¼
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÑÐ³ÑÐ½ Ð¡Ð§15
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ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ðµ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼ ÐÐÐ¡Ð¢
cast iron
housing and blades of a centrifugal compressor
analysis of the structure
inclusion of graphite
perlite component
chemical composition
mechanical tests
compliance with the requirements

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description: The work investigates the causes of destruction of the centrifugal supercharger body for petrochemical production made of cast iron based on samples made from elements of a destroyed compressor. Metallographic studies were carried out of fragments of the cast iron housing of the supercharger, steel blades and fasteners, analysis of the chemical composition and measurement of the hardness of the samples, mechanical tests of samples of cast iron fragments of the housing were carried out.
According to the results of the study, a discrepancy was found the normative and technical documentation of the chemical composition, and, as a result, the mechanical properties of cast iron, from which the compressor housing was made. In the structure of steel blades, Widmanstatten ferrite was discovered, a feature of which is the high fragility and unsuitability of parts with such a structure for critical products. In order to ensure reliable operation of the compressor, recommendations have been developed for controlling the properties of the metal of the compressor housing, which include checking the hardness using a portable hardness tester, and changing the requirements for hardness and strength of castings in technical documentation.