Open AccessMixture substantiation of the powder composition for bearing units seats restoring of rolling bearings
Author(s) -
Yu E Lyakhov,
В. А. Зорин
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1159/1/012049
Subject(s) - materials science , bearing (navigation) , composite material , polyamide , adhesive , epoxy , coating , aluminium , composition (language) , polymer , thermoplastic , computer science , layer (electronics) , artificial intelligence , linguistics , philosophy
The article substantiates optimal and most promising composition of a powdery thermoplastic composite polymer material used to restore worn-out rolling bearing units seats with combination of electrostatic and vibro-vortex coating methods. A laboratory installation for applying and forming coatings by a chamber electrostatic method is presented, with the help of which coatings were applied to steel 45 and AL-4 aluminum samples, after which they were melted in an oven at a temperature of 220 °C for 10 minutes. Based on the studies carried out, the optimal composition of the powdery polymer composition was determined: epoxy oligomer-32 … 40 %, powdered glass fiber-9.8 … 11.6 %, the rest-polyamide 12. At the same time, the coatings obtained from this composition on aluminum alloys substrates have insufficient adhesive strength. Therefore, the search for ways to increase it is relevant, and the solution of this issue will create a reliable technology for restoring rolling bearings seats.