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剎車片表面為何有溝槽 - Why is there a groove on the brake pad?

作者:廣州星展汽車配件有限公司 瀏覽: 發表時間:2019-04-10 14:49:30

剎車片表面為何有溝槽

如果你是“老司機”,如果你善于觀察,就會發現不同剎車片的外觀有一些區別,例如有些剎車片表面有一條溝槽,邊緣有倒角,而有些剎車片則沒有。那么,這些溝槽和倒角的作用是什么呢?


溝槽的作用

 剎車片表面的溝槽,可以將剎車片和剎車盤磨損產生的粉末碎屑迅速排出,避免碎屑附著在剎車片和剎車盤之間的摩擦表面上,導致剎車盤被劃傷和影響剎車效果。


?  剎車片表面的溝槽可以改變剎車片的固有頻率,有利于消除剎車時的噪聲,剎車片邊緣的倒角也有這種作用。


 剎車片表面的溝槽可以加快空氣流動,使摩擦產生的熱量更快散發出去,以免影響剎車效果。


 剎車片表面的開槽可以使雨水迅速排出,這也就增大了雨天剎車片和剎車盤之間的摩擦力,改善雨天和涉水行駛時的剎車性能。


倒角的作用


剎車片通常在使用了3萬-5萬公里左右更換,實際更換里程與駕駛習慣和剎車片質量等因素有直接關系。


?  更換剎車片時,剎車盤表面會有因磨損產生的溝槽,更換的新剎車片與舊剎車盤無法緊密貼合,配合工作時就會產生異響。因此,為了降低出現剎車異響的幾率,有些新剎車片邊緣就會加工出倒角,倒角可以使新剎車片與舊剎車盤邊緣的凸起臺階錯開。


?  有些剎車片邊緣并沒有倒角,如果剎車盤表面因磨損產生的溝槽和凸起并不是很深,新剎車片與舊剎車盤磨合一段時間后,也可以實現良好的剎車效果。如果剎車盤表面的溝槽已經達到更換標準,則應及時更換,否則會縮短新剎車片的壽命,并影響剎車效果。


需要謹慎對待的操作 


在實際的車輛維修工作中,有些維修人員會使用工具在剎車片表面開槽或倒角,這種操作應謹慎對待。


?   首先,剎車片的生產遵循著嚴格的加工工藝,剎車片形狀和表面處理工藝均有嚴格的質量標準,才能達到剎車性能要求。如果擅自改變剎車片表面形狀,例如開槽,就會影響剎車片摩擦材料的強度,甚至導致摩擦材料破損或脫落,造成嚴重的后果。因此,不建議在安裝環節對剎車片表面采取開槽等改變剎車片表面形狀的操作。


?   對于更換剎車片后出現異響的故障,有些維修人員采取打磨剎車盤表面或對剎車片邊緣倒角的維修方式,這些操作有時可以排除故障。但是,有些維修人員使用砂輪等電動工具對剎車片倒角,這樣無法實現精確的操作,而且可能會降低剎車片摩擦材料的強度,從而留下安全隱患。因此,對于溝槽較深的剎車盤,應在更換剎車片時同時更換,以達到良好的剎車效果,并降低剎車異響出現的幾率。



剎車片表面是否有溝槽或倒角,通常是剎車片生產廠家的設計理念不同而已。只要是正規廠家生產的剎車片產品,都已滿足相關行業標準,可以放心使用。


作為摩擦領域全球的主要制造商之一,Remsa提供高質量的剎車片產品,覆蓋了歐美日韓和澳大利亞等主流車系。




Why is there a groove on the brake pad?


If you are an “veteran driver”, or if you are a good observer, you will find some differences in the appearance of different brake pads. Like, some brake pads have a groove on the surface and a chamfer on the edge, but other brake pads do not. So what are the functions ?

Function of the groove

?  The groove on the surface of the brake pad can quickly discharge the powder debris generated by the friction between the brake pad and the brake disc to prevent the debris from adhering to the friction surface between them, which would result in scratches on the brake disc and affect the braking effect.


?  The groove on the surface of the brake pad can change the natural frequency of the brake pad, which helps to eliminate the noise during braking. The chamfer on the edge of the brake pad also has this function.


?  The groove on the surface of the brake pad can speed up the air flow, so that the heat generated by friction is dissipated more quickly, so as not to affect the braking effect.


?  The groove on the surface of the brake pad allows the rain to drain quickly, which increases the friction force between the brake pad and the brake disc on rainy days and improves the braking performance when it is raining and when wading through the water.

Function of the chamfer

Brake pads are usually replaced about every 30,000-50,000 km. The actual mileage interval is directly related to driving habits and brake pad quality.


?   When the brake pads are replaced, you will see dents on the surface of the brake disc due to wear. The new brake pads cannot be closely fitted to the old brake discs, and abnormal noise will occur when they are working in concert. Therefore, to reduce the chance of brake noise, some new brake pads are chamfered at the edge, allowing the new brake pad to be staggered from the raised steps on the edge of the old brake disc.


?   Some brake pads are not chamfered. If the dents and bulges due to wear on the surface of the brake disc are not deep, the new brake pad and the old brake disc can also achieve good braking effect after running for a period of time. If the dents on the surface of the brake disc have reached the extent requiring replacement, it should be replaced in time, otherwise the life of the new brake pad will be shortened and the braking effect will be affected.


Operations need to be treated with caution 

In practice, some maintenance personnel use a tool to make a groove or chamfer on the surface of the brake pad. This should be treated with caution.


?   First of all, the production of brake pads follows strict processing techniques, and the brake pad shape and surface treatment process must reach strict quality standards in order to meet the braking performance requirements. If the surface shape of the brake pad is changed unilaterally, such as making grooves, it will affect the strength of the brake pad friction material, and even cause the friction material to break or fall off, causing serious consequences. Therefore, it is not recommended to make a groove or otherwise change the surface shape of the brake pad during installation.


?   For abnormal noise from brake pads after replacement, some maintenance personnel grind the surface of the brake disc or chamfer the edge of the brake pad. These operations can sometimes eliminate the noise. However, some use a motor driven tool such as a grinding wheel to chamfer the brake pad, which does not allow for precise operation, and may reduce the strength of the brake pad friction material, thereby creating a potential safety hazard.Therefore, the brake disc with deep dents should be replaced at the same time when the brake pad is replaced to achieve good braking effect and reduce the chance of abnormal brake noise.



Whether there is a groove or chamfer on the surface of the brake pad is usually just due to different design concepts of different brake pad manufacturers. As long as it is a brake pad product produced by a proper manufacturer, it has already met the relevant industry standards and can be used with confidence.


As one of the world’s leading manufacturers of friction, Remsa offers high quality brake pads covering mainstream vehicle series in Europe, America, Japan, Korea and Australia.


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