Abstract: High lead tin-bronze (ZCuPb22Sn1.5) was produced by centrifugal casting method. The friction and wear properties of the materials were investigated at fixed loads and friction speed，and the wear mechanisms were also analyzed. The results showed that the wear rate increases and the friction coefficient decreases with the increasing the load， the friction coefficient decreases rapidly and then trends to be stable as the loads increases to 120N when the friction speed is below 0.05m/s. Similarly， at the loads of 100N the wear rate increases and the friction coefficient decreases with the increase of the friction speed when the friction speed increases to 0.10 m/s， the friction coefficient decrease rapidly， and then trends to be stable as the friction speed increases to 0.20m/s. Then， with the increase of the fixed loads and friction speed， the solid lubrication film is damaged， the wear of the materials is severe and the wear rate unstably increases. In the process of friction and wear the Pb solid lubrication film on the worn surface is stable， and the materials have good antifriction and lower wear.

Key words: high lead tin-bronze, centrifugal casting, friction and wear resistance, load, adhesion wear