摘要
通过仿真方法捕获Ti48Al2Cr2Nb合金在电解加工过程中的氧气、Ti^(4+)、Al^(3+)的传输行为和电流密度分布规律,揭示工件初始表面粗糙度对最终加工表面微观形貌的影响机理,并进行电解加工实验对最终加工效果予以验证。仿真发现,在加工中表面经历快速整平、抛光、粗化、再抛光的过程,当工件理论初始表面粗糙度为Ra0.8μm时,离子分布更均匀,加工表面微观形貌更光滑。实验发现,经1 500目砂纸打磨的工件在电解加工后表面更均匀、光滑,仿真模拟与实验验证的规律证明,选择合适的初始粗糙程度更利于获得更高质量的电解加工表面。
Through simulation methods to capture the transport behavior of oxygen,titanium ions and aluminium ions during the electrochemical machining of Ti48Al2Cr2Nb alloy and its current density distribution,the influence mechanism of the initial roughness of the workpiece on the microstructure of the machined surface was revealed,and the final machining effect was also verified through electrochemical machining experiments.It was showed through simulation that the surface undergoes a process of rapid leveling,polishing,roughening and repolishing.When the theoretical initial surface roughness of the workpiece is Ra0.8 μm,the ion distribution is more uniform and the microstructure of the processed surface is smoother.Experimental result showed that workpiece polished with 1 500 grit sandpaper has a more uniform and smooth surface after electrochemical machining,and the simulation and experimental verification indicate that selecting an appropriate initial roughness is more conducive to obtaining higher quality machining surfaces.
作者
陈年
隋浩男
龚晨
李凌
廖翠姣
CHEN Nian;SUI Haonan;GONG Chen;LI Ling;LIAO Cuijiao(School of Mechanical Engineering,Hu'nan University of Technology,Zhuzhou 412007,China)
出处
《电加工与模具》
北大核心
2025年第1期37-44,共8页
Electromachining & Mould
基金
国家自然科学基金项目(22072040)。
作者简介
第一作者:陈年,男,2000年生,硕士研究生;通信作者:廖翠姣,女,1977年生,副教授。
