Authors: L.I. Andreeva, S.V. Abramov

Title of the article: Polymer materials as an alternative to non-ferrous metals and alloys in repair of mining equipment

Year: 2022, Issue: 6, Pages: 26-32

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

Index UDK: 622.002

DOI: 10.26730/1816-4528-2022-6-26-32

Abstract: Generalized data on the properties of polymer materials used to increase the resource and extend the service life of parts of mining machinery units are presented. It is shown that the use of fluoroplastics in mining machinery units subject to high abrasive wear provides higher antifriction properties than polyamides and makes it possible to extend the life of the unit with mandatory preventive procedures. This makes it possible to increase the efficiency of excavator operation, reduce downtime and free up repair personnel to perform other machine maintenance tasks. Scientific research has made it possible to develop a new design of the seat bearing inserts of the EKG-8I excavator. Tests have shown the high maintainability of the liner and the possibility of its replacement without laborious installation work, as well as the economy of non-ferrous materials and alloys. It was revealed that the resource of parts increased by 2.5...4 times and the time and labor costs for repair maintenance of equipment decreased by 2 times. Scientific research has also been carried out on the development of the design and manufacturing technology of bushings of running wheels and roller wheels of excavators of cyclic action. Experiments on the installation of seat bearing inserts and polyamide bushings were carried out in Kazakhstan, in the Krasnoyarsk Territory, in Uzbekistan and mining enterprises of the Chelyabinsk region.

Key words: polymer materials polyamide resins antifriction properties powder compositions seat bearing inserts

Receiving date: 15.09.2022

Approval date: 01.10.2022

Publication date: 27.12.2022

CITE DOWNLOAD