超声振动下建筑结构钢磨削划痕尺寸表面质量分析  

Surface Quality Analysis of Grinding Scratch Dimensions of Building Structural Steel under Ultrasonic Vibration

作　　者：杨艳蒙 Yang Yanmeng(Experimental Training Centre of Zhengzhou College of Economics and Trade,Zhengzhou Henan 451100,China)

机构地区：[1]郑州经贸学院实验实训中心,河南郑州451100

出　　处：《机械管理开发》2024年第8期215-216,226,共3页Mechanical Management and Development

摘　　要：超声辅助磨削方法是在传统磨削加工方法上加入超声振动的新磨削技,可以显著改善加工性能。以结构钢作为结构钢,设置不同划痕深度下普通超声振动划痕测试。研究结果表明,超声振动磨削划痕期间形成很大振幅,划痕深度明显提高。超声振幅提高会在系统中获得更大输入能量,提升了材料去除率。金刚石压头振动冲击时,位于划痕底部与两侧区域产生持续裂纹缺陷。随着振幅增加,在断续冲击过程中形成了更长划痕。提高划入深度,达到了相对稳定划入深度,表现为脆性去除特点。Ultrasonic-assisted grinding method is a new grinding technology that adds ultrasonic vibration to the traditional grinding processing method,which can significantly improve the processing performance.Take structural steel as structural steel,set up different scratch depth under ordinary ultrasonic vibration scratch test.The results show that a large amplitude is formed during ultrasonic vibratory grinding scratches,and the scratch depth is significantly increased.The increased ultrasonic amplitude results in greater input energy in the system,which enhances the material removal rate.The vibratory impact of the diamond indenter produced persistent crack defects located at the bottom of the scratch with the regions on both sides.As the amplitude increased,longer scratches were formed during intermittent impacts,increasing the scratch depth and reaching a relatively stable scratch depth that exhibited brittle removal characteristics.

关 键 词：结构钢 超声辅助 磨削 划痕 表面质量 

分 类 号：TH161[机械工程—机械制造及自动化]