The effect of surface texture and conductive grease filling on the tribological properties and electrical conductivity of carbon brushes

摘要

In this work, the effect of surface texture combined with conductive grease (CG) on the sliding friction characteristics of carbon brushes was studied. Mainly studied the influence of CG on the tribological properties of carbon brushes and the collection effect of surface texture on carbon powder. Studies have shown that a conductive lubricating film is formed on the surface of the carbon brush, and a large amount of carbon powder is detected in the surface texture holes of the carbon brush, indicating that surface texture can be used as a collector for carbon powder. In addition, the coefficient of friction (COF) of D172 carbon brush drilling and filling with CG is reduced by about 29% similar to 56% and 47%similar to 49%, respectively.