Authors: M.Yu. Drygin, N.P. Kuryshkin

Title of the article: Experience and results of use magnetic-luminescent control method excavator reducer claims

Year: 2020, Issue: 1, Pages: 40-48

Branch of knowledge: 05.02.11 Methods of control and diagnostics in mechanical engineering

Index UDK: 621.822.1

DOI: 10.26730/1999-4125-2020-1-40-48

Abstract: The article substantiates the necessity and expediency of using the magnetic-luminescent method of non-destructive testing of parts of excavator gearboxes. The features of the application of various methods of their magnetization are described. Considering the minimization of the laboriousness of control, material saving and increasing information content, recommendations are given on the applicability of various methods of magnetization of typical gear components: small and large-modular gears, ring gears, carriers and shafts. It has been established that gear wheels with an outer diameter of up to 500 mm are advisable to magnetize by the circulating method using a toroidal winding, and wheels with a diameter of more than 500 mm by longitudinal magnetization. The laboriousness of longitudinal magnetization of shafts by a solenoid coil is 84% less than the laboriousness of permanent magnetization. It has been experimentally confirmed that the magnetic-luminescent method of controlling a carrier is possible only using the circulating method of magnetization. The characteristic zones of the most likely occurrence of cracks on the shafts and carriers have been revealed. Consideration of this factor during non-destructive testing will reduce the complexity of the entire control by at least 60%. The experience of decoding indicator traces of magnetic powder on parts with characteristic cracks and their accumulations.

Key words: Excavator gearbox gearing defect non-destructive testing cracks and their accumulations magnetic fluorescent method

Receiving date: 18.04.2020

Publication date: 11.06.2020

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