随形冷却通道电解抛光的仿真模拟及试验研究  

Simulation and experimental study of electrolytic polishing of conformal cooling channel

作　　者：李德佳 李志永[1] 于亚洲 柴明霞 杨丛丛 LI Dejia;LI Zhiyong;YU Yazhou;CHAI Mingxia;YANG Congcong(School of Mechanical Engineering,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255049

出　　处：《电镀与涂饰》2024年第9期69-77,共9页Electroplating & Finishing

基　　金：山东省自然科学基金(ZR2020ME161)。

摘　　要：[目的]研究不同工艺参数对316L不锈钢随形冷却通道内壁电解抛光效果的影响,以期优化电解抛光工艺,提高随形冷却通道内壁的表面品质。[方法]通过COMSOL数值模拟软件,对电解抛光过程的流场、电场和温度场进行了多场耦合分析,通过模拟电解液流速和工作电压的变化,研究了二者对抛光效果的影响,并通过电解抛光试验进行验证。[结果]随着电解液流速的增大,出入口温差减小、材料去除率减小、内壁表面粗糙度增大,抛光效率下降;随着电压的增大,出入口温差增大、材料去除率增大、内壁表面粗糙度减小,抛光效率上升。在电压25 V、流速0.3 m/s的条件下抛光效果最佳,表面粗糙度可降至0.195μm。[结论]电解抛光试验结果与仿真结果基本一致,证实了仿真模型的准确性,为优化随形冷却通道内表面的处理工艺提供了重要参考。[Introduction]The effects of different process parameters on the electrolytic polishing of inner wall of 316L stainless steel conformal cooling channel need to be studied,to improve the surface quality of inner wall of conformal cooling channel after electrolytic polishing.[Method]The COMSOL numerical simulation software was used to conduct a multi-field coupling analysis considering the flow field,electric field,and temperature field during electrolytic polishing process.The effects of electrolyte flow rate and working voltage on the polishing effectiveness was studied through simulation,which was subsequently verified by experiments.[Result]With the increasing of electrolyte flow rate,the polishing efficiency got worse as shown by a decrease in temperature rise at the outlet and material removal rate,and an increase in surface roughness of inner wall.Conversely,the polishing efficiency got better with the increasing of voltage,as shown by an increase in temperature rise at the outlet and material removal rate,and a decrease in surface roughness of inner wall.The best polishing effect was achieved at a voltage of 25 V and an electrolyte flow rate of 0.3 m/s.The surface roughness of inner wall of conformal cooling channel could be reduced to 0.195μm after being polished thereunder.[Conclusion]The experimental electrolytic polishing results were consistent with the simulation results,confirming the accuracy of the simulation model and providing important references for optimizing the surface treatment process for inner wall of conformal cooling channel.

关 键 词：电解抛光 随形冷却通道 仿真模拟 多场耦合 不锈钢 

分 类 号：TG175[金属学及工艺—金属表面处理]