Hangzhou Dongjiang Friction Materials Co., Ltd.
Expert answers on common faults of automotive brake friction pads
Publication Date:
2022-11-21
Brake friction pads contain about 20% organic materials, which decompose and emit smoke when the temperature is too high, forming an oily substance on the surface of the friction pad that affects braking performance. Possible causes of this phenomenon include frequent braking downhill, causing excessive temperature and smoke; or the organic content in the friction pad formula being non-compliant and exceeding the standard.
1. Why does smoke appear during braking?
Brake friction pads contain about 20% organic materials, which decompose and produce smoke when the temperature is too high, forming an oily substance on the surface of the friction pad that affects braking performance. Possible causes include frequent braking on downhill slopes causing excessive temperature and smoke, or the organic content in the friction pad formula being non-compliant and exceeding standards.
2. What is the function of the grooves inside the brake friction pads?
The grooves inside the brake friction pads serve to release gases, reduce noise, alter the product's natural frequency, expel wear debris, and enhance the adhesion between the friction material and the backing plate.
3. Why do newly installed brake friction pads sometimes feel soft during braking?
After replacing with new brake friction pads, a soft braking feel may occur due to reasons such as improper installation of the friction pads, contamination on the brake disc surface that was not cleaned, faults in the brake lines or insufficient brake fluid, incomplete air removal from the brake hydraulic cylinder, excessive wear and uneven surface of the brake disc, and substandard quality of the brake friction pads.
4. Why does brake lag occur?
Brake lag may be caused by factors such as failure of the brake return spring, improper clearance or overly tight assembly dimensions between the brake friction pad and brake disc, poor thermal expansion performance of the friction pad, and poor return of the parking brake.
5. Why does the backing plate of the brake friction pad detach?
There are two cases of backing plate detachment: one is cracking between the backing plate and the friction material; the other is cracking within the friction material itself. Possible causes include poor pretreatment of the backing plate, poor stability of the friction material, substandard pressing process, poor adhesive quality, excessively high operating temperatures, incorrect installation, impacts, and knocks.
Hotline
Address: Xinwan Street , Qiantang District, Hangzhou, Zhejiang Province
Email:HRdjmc@hzdjfm.com
Copyright © Hangzhou Dongjiang Friction Materials Co., Ltd. All rights reserved. Powered by www.300.cn | Business Card