DIAMOND BURNISHING PROCESS EFFICIENCY TO INCREASE THE WEAR RESISTANCE OF SLIDING BEARING BUSHINGS MADE OF CuAl8Fe3 BRONZE
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- TITLE: DIAMOND BURNISHING PROCESS EFFICIENCY TO INCREASE THE WEAR RESISTANCE OF SLIDING BEARING BUSHINGS MADE OF CuAl8Fe3 BRONZE
- ABSTRACT: In this article, the object of the experimental study is wear resistance of sliding bearing bushings made of CuAl8Fe3 bronze after diamond burnishing. Tribological studies were performed under boundary lubricant conditions and dry friction conditions. In order to evaluate the efficiency of the diamond burnishing process, a comparison of the wear characteristics of three groups of specimens was made: treated only by cutting, subjected to diamond burnishing with one pass; subjected to diamond burnishing with six passes. It has been proved that under boundary lubricant conditions, the specimen subjected to diamond burnishing with six passes has 2.27 times higher wear resistance compared to the wear resistance of the specimen treated by cutting, and 1.42 times higher wear resistance than that of the specimen subjected to diamond burnishing with one pass. Under dry friction conditions, the specimen subjected to diamond burnishing with one pass has 2.45 times higher wear resistance than the wear resistance of the specimen treated by cutting, and lower wear resistance than that of the specimen subjected to diamond burnishing with six passes. Applying of diamond burnishing with six passes leads to 2.3 times higher wear resistance under dry friction conditions compared to the conventional case of holes machining.
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