石墨烯铝基复合材料超声辅助微铣削工艺研究

Machinability Research on the Ultrasonic Assisted Micro-Milling for Graphene Based Aluminum Matrix Composite

超声辅助微铣削作为一种新兴复合加工技术,在加工硬脆材料和复合材料中具有独特的优势.针对石墨烯铝基复合材料在工业应用中存在难加工、加工精度要求高、加工效率低等问题,本文以纯铝及石墨烯铝基复合材料为研究对象,对不同配比的石墨烯铝基复合材料进行了超声辅助微铣削实验.通过正交实验分析石墨烯含量、每齿进给量以及超声振幅对铣削力和加工表面粗糙度的影响,从而确定石墨烯铝基复合材料在超声辅助微铣削下的最佳工艺参数.实验结果表明,当每齿进给量为1μm/z,超声振幅为3.05μm时,石墨烯铝基复合材料的加工性能最优.

As a new composite processing technology,ultrasonic assisted micro-milling represents unique advantage in processing hard and brittle materials and composites.In order to solve the problems of difficult machining,high machining accuracy requirement and low processing efficiency in industrial applications of graphene-based aluminum matrix composites,a pure aluminum and graphene-based aluminum matrix composite were taken as research objects to carry out ultrasonic assisted micro-milling experiments for graphene-based aluminum matrix composites with different ratios.The effects of graphene content,feed rate per tooth and ultrasonic amplitude on milling force and surface roughness were analyzed based on orthogonal experiment,and the optimal process parameters of graphene aluminum matrix composite under ultrasonic assisted micro milling were determined.The results show that the graphene-Al matrix composites can put up a best processing performance under 1μm/z feed per tooth and 3.05μm ultrasonic amplitude.