振动结晶提高铝合金铸件致密度的机理及应用  

Mechanism and Application of Vibrant Crystal Improving Aluminum Alloy Casting Density

作　　者：朱丽娟[1] 董秀琦[1] 刘立中 张力豹 江道峰 王小杰 杨孟林 陈立耿 刘继红 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110168 [2]长春创新铸业有限公司,吉林长春130022 [3]万丰摩轮有限公司,浙江新昌312500

出　　处：《铸造》2007年第9期984-987,共4页Foundry

摘　　要：通过理论分析及实践验证了振动结晶对提高铝合金铸件的致密度十分有效,并指出振动的方向必须与重力平行且是纵波,下金属型的振动的抛掷指数(Aω2)/g≤1,有利于传热,上金属型可大于1,侧金属型界于二者之间才有利于提高冒口的保温作用,先慢后快的浇注方式可强化振动的补缩效果。It was analyzed that the vibration crystal is validated for improving aluminum alloy casting＇s density, and indicated that the vibrant direction must be parallel to the gravity, and which is vertical wave. Lower model＇s chuck exponential of vibration that is （Aω^2）/g≤1, it is good for heat g transfer. The upper model＇s bigger than 1, but the side model that is between those is propitious to advance the heat preservation function of riser. The pouring mode of increasing velocity can intensify vibrant feeding effect.

关 键 词：振动结晶 铝合金铸件 致密性 

分 类 号：TG27[金属学及工艺—铸造]