Railway Disc Brake with Thermally Insulated Friction Assemblies Containing Materials with Different Friction Properties

Purpose: Description of the design of the disc brake with thermally insulated friction units and the peculiarities of its manufacture. Methods: Analysis of the properties of friction materials for friction units of the railway disc brake. Results: The design of disc brake with thermally insulated friction units is proposed, a characteristic feature of which is thermal insulation of friction units A and B from each other. In addition, different friction materials are used in friction units – brake discs and brake linings. The basic principle of the disc brake is to compensate for the friction force of the friction assembly A in low temperature conditions where the carbonbased friction material is placed. Features of brake manufacturing are given. It is noted that the recommended material for thermally insulated working parts of the disc brake is chrysotile-asbestos. This material has a low thermal conductivity and an acceptable cost. It is recommended to use adhesive joints based on ABRO TM-185 glue by thermal insulation of brake discs. Practical significance: The design and features of the manufacture of a disc brake with thermally insulated friction units are described, as well as the best friction materials for it are determined. The results of the study can be used in specialized and locomotive manufacturing enterprises in order to eliminate the existing drawbacks regarding the friction characteristics of the friction materials used, as well as to reduce the cost of manufacturing a carbon-based disc brake.