一、前言铝青铜具有良好的耐磨性,其强度、硬度以及塑性也都超过锡青铜,并且还具有较高的工艺性能,因此,在工业生产中的应用也日愈广泛,尤其是在机械制造中常用作耐磨材料、制造蜗轮、齿轮、轴承、活塞套、汽缸套、螺帽、管材等金属另件,然而,铝青铜却具有高的导热率,相当大的收缩率,给铸造工艺带来困难,许多铸件常常因为浇铸过程 First, the preface Aluminum bronze has a good wear resistance, its strength, hardness and plastic are also more than tin bronze, and also has high process performance, therefore, in the industrial production is also more and more widely used, especially in machinery Manufacturing is often used as wear-resistant materials, manufacturing worm gear, gear, bearings, piston sleeve, cylinder liner, nut, pipe and other metal parts, however, aluminum bronze has high thermal conductivity, considerable shrinkage, to the casting process To bring difficulties, many castings often because of the casting process