网状电极形状参数对高温镍基合金电解加工的影响

为研究网状电极形状对GH4169高温镍基合金电解加工的影响规律,采用电极"抬刀+摇动"的方式,进行了0. 5、0. 8和1. 0 mm孔径的平面网状电极对比实验以及曲面网状电极和平面网状电极对比实验。结果表明,当孔径为0. 5 mm时,不足以将加工屑有效排除,加工不能持续进行;随着电极孔径的增大,加工稳定性增强,速度增大,但精度降低。采用曲面网状电极加工时,由于摇动平面与所需加工面不平行,造成工件表面不平整。在实际加工中,应当根据对稳定性、速度以及精度的具体要求合理选择网状电极形状参数。

Effects of Mesh Electrode Shape Parameters on ECM of GH4169Nickel-based Alloy

In order to investigate the influence of the shape of the mesh electrode on the electrolytic processing of GH4169 high temperature nickel-based alloy,the electrode"lifting and shaking"method was used. The comparison experiment of flat mesh electrodes with 0. 5 mm,0. 8 mm and 1. 0 mm apertures and comparison experiment of flat mesh electrodes and and curved mesh electrodes were carried out. The results show that when the hole diameter is 0. 5 mm,maching chips cannot be removed effectively,and the machining can not be continued.With the increase of the electrode hole diameter,the machining stability is improved,and with the machining speed increasing,the machining accuracy is reducing. When the curved mesh electrode is used for processing,the surface of the workpiece is uneven because the shaking plane is not parallel to the required processing surface. Therefore,in actual processing,the shape parameters of the mesh electrode should be reasonably selected according to the specific requirements,such as stability,speed and accuracy.