The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2023
Filed:
Feb. 18, 2020
University of Science and Technology Beijing, Beijing, CN;
Beijing Tianyishangjia New Material Corp., Ltd., Beijing, CN;
Lin Zhang, Beijing, CN;
Xuanhui Qu, Beijing, CN;
Peng Zhang, Beijing, CN;
Peifang Wu, Beijing, CN;
Mingli Qin, Beijing, CN;
Cairang Shijia, Beijing, CN;
Jingwu Cao, Beijing, CN;
Kangxi Fu, Beijing, CN;
UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, Beijing, CN;
BEIJING TIANYISHANGJIA NEW MATERIAL CORP., LTD., Beijing, CN;
Abstract
The present disclosure relates to a fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof. The fiber-reinforced copper-based brake pad for high-speed railway train comprises 80-98.5 wt. % metal powder, 1-15 wt. % non-metal powder and 0.5-5 wt. % fiber component. In addition, some components are added in a specific proportion to achieve optimal performance. The copper-based powder metallurgy brake pad is obtained by powder mixing, cold-pressing and sintering with constant pressure. The friction braking performance of the obtained brake pad is tested according to a braking procedure consisting of three stages, i.e., the first stage with low-pressure and low-speed, the second stage with high-pressure high-speed and the continuous emergency braking third stage with high-pressure and high-speed. The brake pad has advantages including higher and more stable friction coefficient, higher fade and wear resistance and slighter damage to brake disc at high speeds.