提高EA211压铸铝合金缸体致密性的工艺改进

摘要

叙述了EA211缸体的压铸生产背景,生产验证了3种压铸工艺对缸体轴瓦区域致密性的影响,确定了采用局部挤压工艺作为铝合金缸体的压铸工艺,描述了局部挤压工艺中3个工艺参数对轴瓦区域内部致密性的影响.%The diecasting production background of EA211 cylinder block was described. The effect of three kinds of diecasting technologies on compactness of cylinder block bearing bush was verified through production. The local squeezing process was adopted as the process of aluminum diecast alloy cylinder block. And the influence of 3 process parameters of local squeezing on internal compactness of bearing bush was described.