Purpose

The purpose of this paper is to evaluate experimentally the influence of different surface roughness of the contacting disc on tribological performance of the non-asbestos brake friction material (BFM).

Design/methodology/approach

Taguchi method was applied to design an experiment using three different discs of gray cast iron with different surface roughness, which is measured using optical profilometer. These discs were subjected to sliding against pins prepared with the developed non-asbestos BFM, using pin on disc friction and wear monitor.

Findings

The experimental results shows that the disc 2 (Ra = 3.77 µm) gives wear of 22.78 µm and coefficient of friction of 0.462, which is recommended for extreme brake performance. Analysis of Taguchi design revealed that the disc surface was most significant parameter among the parameters under study.

Practical implications

During braking, continuous sliding between the BFM and brake disc or drum not only results into wear of BFM but also changes the surface finish of the brake drum or disc. This leads to variation in surface topography of the drum or disc surface with application of brakes, which further affects the characteristics of the BFM.

Originality/value

The tribological performance of BFM depends upon the topography of the surface on which it was sliding. To get best performance of the non-asbestos friction materials, disc having moderate surface finish is recommended. Scanning electron microscope micrographs had shown the different plateaus formed and energy-dispersive X-ray spectroscopy spectra identified presence of different chemical elements prior to sliding of the pins surface over different discs surface topography.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0120/

中文翻译：

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非石棉制动摩擦材料与形貌不同的制动盘接触的摩擦学性能

目的

本文的目的是通过实验评估接触盘的不同表面粗糙度对非石棉制动摩擦材料（BFM）摩擦学性能的影响。

设计/方法/方法

使用Taguchi方法设计了三个不同表面粗糙度的灰口铸铁圆盘，并使用光学轮廓仪进行了测量。使用磨盘上的销钉摩擦和磨损监测器，使这些磨盘在用开发的非石棉BFM准备的销钉上滑动。

发现

实验结果表明，在盘2（RA = 3.77 μ米）给出的22.78磨损μ这被推荐用于极端制动性能微米，0.462摩擦，系数。Taguchi设计的分析表明，在所研究的参数中，圆盘表面是最重要的参数。

实际影响

在制动过程中，BFM与制动盘或制动盘之间的连续滑动不仅会导致BFM磨损，还会改变制动鼓或制动盘的表面光洁度。这会导致制动作用下鼓或磁盘表面的表面形貌变化，从而进一步影响BFM的特性。

创意/价值

BFM的摩擦学性能取决于其滑动表面的形貌。为了获得非石棉摩擦材料的最佳性能，建议使用具有中等表面光洁度的圆盘。扫描电子显微镜显微照片显示了形成的不同平台，能量散布X射线光谱学光谱在销表面在不同磁盘表面形貌上滑动之前识别出不同化学元素的存在。

同行评审

本文的同行评审历史记录可在以下网址获得：https://publons.com/publon/10.1108/ILT-04-2020-0120/