铝合金铸件黑色硬质点的研究  

Research on black hard spots of aluminum alloy castings

作　　者：王家文 李胜君 程俊明 孙晓莉 姜丽 赵娜娜 刘宁 王家林 王凤林 WANG Jiawen;LI Shengjun;CHENG Junming;SUN Xiaoli;JIANG Li;ZHAO Nana;LIU Ning;WANG Jialin;WANG Fenglin(Xintai(Liaoning)Precision Equipment Co.,Ltd.,Yingkou 115009,Liaoning China;Shenyang Institute of Engineering,Shenyang 110136,Liaoning China;Aviation Industry Shenyang Aircraft Industry(Group)Co.,Ltd.,Shenyang 110034,Liaoning China)

机构地区：[1]新泰(辽宁)精密设备有限公司,辽宁营口115009 [2]沈阳工程学院,辽宁沈阳110136 [3]航空工业沈阳飞机工业(集团)有限公司,辽宁沈阳110034

出　　处：《中国铸造装备与技术》2021年第2期30-32,共3页China Foundry Machinery & Technology

摘　　要：铝合金铸件加工时发现的黑色硬质点硬度大,对刀具磨损较厉害,加工效率低;而且黑色硬质点分布在铸件密封面上,严重影响铸件的气密性能。通过电镜扫描确定黑色硬质点成分,并结合形成原理,提出去除黑色硬质点的解决方案。经过实践验证,取得了良好的效果。The black hard spots found during the processing of aluminum alloy castings have high hardness,which causes severe tool wear and low processing efficiency;and the black hard spots are distributed on the sealing surface of the casting,which seriously affects the airtight performance of the casting.The composition of black hard spots has been determined by scanning electron microscope,in combined with the formation principle,a solution to remove the black hard spots has been proposed.After practical verification,good results have been achieved.

关 键 词：黑色硬质点 电镜 气密性能 AlSiMnFe化合物 

分 类 号：TG245[金属学及工艺—铸造]