目前在国内、外高速大功率内燃机上都采用薄壁三层轴瓦.薄壁三层轴瓦包括钢背、铜铅和铅锡等三层.钢背一般采用锻造或轧制08号优质结构钢(或10号钢).铜铅层采用离心或静力浇铸.目前较先进的是使用粉末冶金烧结法,铜一般为70%左右、铅30%左右.但亦有含铜量较高、含铅量较低、并且加入2～3%的锡和镍以及银等少量元素.铅锡层都采用电镀法.铅90%左右,锡10%左右.此外,第三层也 At present, both domestic and foreign high-speed high-power internal combustion engine adopts thin-walled three-layer bearing bush, thin-walled three-layer bearing bush includes three layers of steel back, copper lead and lead tin etc. Steel back generally adopts forging or rolling 08 high quality structural steel Or 10 steel.) Copper-lead layer by centrifugal or static casting. At present, the more advanced is the use of powder metallurgy sintering method, copper is generally about 70%, about 30% of lead. But there are also high levels of copper, lead The amount is low, and adding 2 to 3% of tin and nickel and silver and other small elements. Lead-tin layer are used electroplating method. About 90% lead, tin about 10%. In addition, the third layer