Electrochemical micromachining (ECMM) is a non-traditional micro-fabrication technology developed to produce complex geometries on very hard and electrically conducting surfaces. Typical applications of ECMM include aerospace components, medical devices and gas turbine blades. Duplex stainless steel 2205 (DSS 2205) is an exceptional corrosion-resistant iron alloy with a nearly identical volume of austenite and ferrite. In the present work, ECMM was employed to produce a series of through micro-holes on DSS 2205 sheet. Brass and copper tungsten alloys were used as two separate electrode materials for micro-hole making experimentations. Micro-hole making experimental trials were executed using L₂₇ orthogonal array. The collective methods of grey-based response surface methodology and analysis of variance were attempted to recognize the critical variables influencing the output parameters. The impact of machining variables on material removal rate, surface roughness and overcut was investigated through response surface plots. The optimal parameter settings were validated by performing a confirmation test. Morphologies of the machined micro-holes were analysed by scanning electron microscopic images. 3D surface measurement tester was used to estimate the roughness of the surface adjacent to the micromachined holes.

电化学微机械加工（ECMM）是一种非传统的微加工技术，旨在在非常坚硬且导电的表面上产生复杂的几何形状。ECMM的典型应用包括航空航天组件，医疗设备和燃气轮机叶片。双相不锈钢2205（DSS 2205）是一种特殊的耐腐蚀铁合金，其奥氏体和铁素体的体积几乎相同。在当前的工作中，采用ECMM在DSS 2205板上生产了一系列通孔。黄铜和铜钨合金被用作两种单独的电极材料，用于微孔加工实验。使用L ₂₇进行微孔加工实验正交数组。尝试使用基于灰色的响应面方法和方差分析的集体方法来识别影响输出参数的关键变量。通过响应曲面图研究了加工变量对材料去除率，表面粗糙度和过切的影响。通过执行确认测试来验证最佳参数设置。通过扫描电子显微镜图像分析加工的微孔的形态。3D表面测量测试仪用于估算与微加工孔相邻的表面的粗糙度。