Friction Wear Property of Brake Materials by Copper-based Powder Metallurgy With Various Brake Speeds

LIU Jian-xiu¹，GAO Hong-xia¹，WEI Xiu-lan¹

(1.Zhengzhou University of Light Industry, Mechanical Engineering Institute, Zhengzhou, China)

摘要:The experiment is conducted on MM-1000 friction test machine, which tests friction wear property of copper-based brake materials by powder metallurgy at different brake speeds. It shows that the coefficient of friction and wear volume are greatly influenced by brake speed. When the brake speed is 4000 r/min, which is a bit higher, the material still has a higher coefficient of friction with 0.47. When the brake speed is over 4000r/min, the coefficient of friction decreased rapidly. When the brake speed is 3000r/min, the material''s wear is in its minimum. That is to say no matter how higher or lower the brake speed is the wear volume is bigger relatively. With the brake speed of the lower one it mainly refers to fatigue wear; while of higher one it mainly refers to abradant and oxidation wear.

关键词:brake material; friction wear; brake speed; powder metallurgy;

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