Abstract

The study considers the principles of creating a disc brake, promoting consistently high friction in a wide range of brake temperatures. The selection of friction materials for thermally insulated friction units is carried out according to the principle of mutual compensation of the negative properties of one friction unit due to the positive properties of another one. For example, for a cast iron–35GS steel disc brake, when heated to 300°C, the friction coefficient changes from 0.38 to 0.17, while for a carbon–35GS steel disc brake, the reverse effect of a coefficient variation from 0.17 to 0.58 is observed. A combination of the given tribological systems provides an acceptably high friction coefficient in the entire brake temperature range. A disc brake with two heat-insulated friction units makes it possible to improve the rolling stock braking efficiency. The cost of the new disc brake (compared to a disc brake based on a composite carbon–carbon friction material) is expected to be lower by about 30%.

中文翻译：

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带有两个具有不同摩擦特性的绝热摩擦单元的盘式制动器

摘要

该研究考虑了创建盘式制动器的原理，在广泛的制动温度范围内促进始终如一的高摩擦力。绝热摩擦单元摩擦材料的选择，是按照一个摩擦单元的负特性与另一个摩擦单元的正特性相互补偿的原则进行的。例如，对于铸铁–35GS 钢盘式制动器，当加热到 300°C 时，摩擦系数从 0.38 变为 0.17，而对于碳–35GS 钢盘式制动器，系数从 0.17 变为 0.58 的反向效应被观察到。给定摩擦学系统的组合在整个制动温度范围内提供了可接受的高摩擦系数。带有两个隔热摩擦单元的盘式制动器可以提高机车车辆的制动效率。新型盘式制动器的成本（与基于复合碳碳摩擦材料的盘式制动器相比）预计将降低约 30%。