摘要
针对各向异性合金材料电解加工过程中,加工表面形貌难以控制的问题,利用位置函数建立双相Ti-48Al-2Cr-2Nb合金微观材料模型,进而建立电解加工仿真微观物理模型,分析加工表面微观形貌随宏观工艺参数演变的规律。研究结果表明:电解液流速在14.7~23.4 m/s、进给速度在1.7~2.3mm/min范围内,随着电解液流速和进给速度的增加,加工表面粗糙度R_y越低;当加工电压为21 V、进给速度为2.3 mm/min、电解液流速为23.4 m/s时,加工表面最光洁,R_y值达最小,为0.677μm。从微观形貌演变仿真可以看出,获得最光洁加工表面经历了先粗化后抛光的过程。
During electrochemical machining process,it is difficult to control the shape of the machined surface of anisotropic alloy materials.Therefore,the position function was used to establish the micro-material model for two-phase Ti-48Al-2Cr-2Nb alloy,and then the electrochemical machining simulation micro-physical model was set up.The influences of the macro-process parameters on the evolution behavior of surface micromorphology were investigated.The results showed that when the electrolyte flow rate and feed rate were in the range of 14.7~23.4 m/s and 1.7~2.3 mm/min respectively,the roughness Ry of the machined surface decreased with the increase in the flow rate and feed rate.The smoothest surface(Ry=0.677μm)was obtained under the condition of the voltage being 21 V,the feed rate 2.3 mm/min and the electrolyte flow rate 23.4 m/s.The simulation of micro-morphology evolution showed that the most polished surface had undergone a process of roughening and polishing.
作者
马新周
罗志坚
胡纯蓉
李文元
廖翠姣
MA Xinzhou;LUO Zhijian;HU Chunrong;LI Wenyuan;LIAO Cuijiao(College of Mechanical Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China;College of Computer Science,Hunan University of Technology,Zhuzhou Hunan 412007,China)
出处
《包装学报》
2020年第4期45-56,共12页
Packaging Journal
基金
湖南省自然科学基金资助项目(2018JJ4067,2020JJ4271)。
