径向进给射流电解车削圆柱表面试验  

Experimental on Radial Feed Jet Electrochemical Turning of Cylinder Surface

作　　者：仇志 曲宁松[1] 刘洋 QIU Zhi;QU Ninsong;LIU Yang(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautic,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《电加工与模具》2020年第2期38-42,73,共6页Electromachining & Mould

基　　金：国家重点研发计划资助项目(2018YFB1105900)。

摘　　要：径向进给射流电解车削加工是针对难加工材料回转体零件表面特征,利用电解液从阴极刀具内部喷向工件,刀具沿径向逐渐向工件进给进行电化学溶解的加工方法。通过流场仿真,优选出阴极刀具结构,利用10%的NaNO3溶液对316L不锈钢材料圆柱表面进行试验研究,分析平衡间隙、加工电压、工件转速、电解液压力对材料去除率和工件表面粗糙度的影响。结果表明:利用优选的刀具,对直径20 mm、高度10 mm的316L不锈钢圆柱表面径向单边车削0.5 mm,材料去除率可达0.391 g/min,表面粗糙度Ra<0.2μm。Radial feed jet electrochemical turning technology is aiming at the surface characteristics of difficult-to-machine material rotating parts,in which the electrolyte is sprayed from the inside of the tool cathode to the workpiece,and the cathode tool is gradually fed to the workpiece in the radial direction for electrochemical dissolution.Through flow field simulation,the cathode tool structure was optimized,then the cylinder surface of stainless steel 316L was tested by using 10%NaNO3 solution.The effects of balance gap,applied voltage,workpiece rotation speed and electrolyte pressure on material removal rate and surface roughness of the workpiece were analyzed.The result shows that surface of the stainless steel 316L cylinder with a diameter of 20 mm and a height of 10 mm was unilaterally turned by 0.5 mm.The material removal rate result was 0.391 g/min and the surface roughness was less than Ra0.2μm.

关 键 词：射流电解车削 材料去除率 表面粗糙度 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]