Friction Wearing Properties Research of High-silicon Aluminium Alloy Cylinder Sleeve

摘要

With tank special purpose lubricating oil,100N,200N and 800N loading force and different loading times,spray-formed high-silicon aluminium alloy and military superpower engine steel cylinder sleeve materials were used for comparative friction test and friction pair comparision test under simulated engine work condition.The results showed that,compared with steel cylinder sleeve materials,high-silicon aluminium alloy showed more excellent wearing resistance.The friction mechanism analysis of high-silicon aluminium alloy indicated that high-hardness particles in soft parent metal had determinative function,including wearing resistance and supporting ability when wearing happened.Dents on soft parent metal surface produced by friction could store oil and were helpful for lubrication.The friction trace analysis showed that,high-hardness particles in high-silicon aluminium alloy could produce friction trace on 42MnCr52 steel surface,which proved friction function of high-hardness particles in high-silicon aluminium alloy.