镁合金铸件振动光饰自动打磨抛光工艺研究  

Research on Automatic Grinding and Polishing Process of Magnesium Alloy Castings with Vibration Finishing

作　　者：罗昭锐 李实田 王玉 李文才 游辉辉 蒋李超 梁海迪 LUO Zhaorui;LI Shitian;WANG Yu;LI Wencai;YOU Huihui;JIANG Lichao;LIANG Haidi(Xinjiang Technology(Jiangsu)Co.,Ltd.,Nantong 226100,Jiangsu China)

机构地区：[1]新江科技(江苏)有限公司,江苏南通226100

出　　处：《铸造工程》2025年第2期22-24,共3页Foundry Engineering

摘　　要：针对镁合金铸件毛刺、飞边、氧化皮、砂眼、凸瘤等表面问题,人工打磨抛光效率低且存在粉尘爆炸风险,采用振动光饰技术研究了磨料种类、形状及尺寸,振动频率、时间等工艺参数对镁合金铸件表面粗糙度的影响规律。研究结果表明,利用立式振动光饰装置,以斜三角4 mm×4 mm的棕刚玉磨料为粗磨磨料、圆锥形4 mm×4 mm的树脂磨料为抛光磨料,随着振动频率和时间的增加,镁合金铸件表面粗糙度不断降低。使用380 V、75 Hz的电源粗磨1 h和抛光1 h获得良好的铸件表面质量,表面粗糙度为Ra0.7。Manual grinding and polishing of rough surfaces such as burrs,seams,scale,blisters,and bumps on magnesium alloy casting is inefficient and poses a risk of dust explosion.Vibration finishing technology was used to study influence of the type,shape and size of abrasives,as well as the frequency and time of vibration on the surface roughness of magnesium alloy castings.The actual processing results show that the vibration finishing device is designed to be vertical,using oblique triangular 4 mm×4 mm brown corundum abrasive as coarse grinding abrasive and conical 4 mm×4 mm resin abrasive as polishing abrasive.As the vibration frequency and time increase,the surface roughness of magnesium alloy castings continues to decrease.Good surface quality of the casting is obtained after rough grinding for 1 h and polishing for 1 h using 380 V,75 Hz power supply with surface roughness of Ra0.7.

关 键 词：镁合金铸件 振动光饰 磨料 表面粗糙度 

分 类 号：TG234.3[金属学及工艺—铸造]