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针对常规掩膜电解加工极难在非平面工件上高效制取表面织构的难题,在设计开发出进液、排液、导流等功能结构合为一体的特殊工具阴极的基础上,本文提出一种极间柔性多孔物充填型活动掩膜电解加工微坑技术,数值仿真并优化设计了极间流场,试验分析了掩膜厚度、极间电压、压紧力、脉冲参数等核心工艺参数对微坑几何特征及其分布特性的影响.基于优选工艺条件,分别在不锈钢平面与圆柱面上加工出几何特征尺寸分布较均匀的微坑阵列.极间柔性多孔物充填型活动掩膜电解加工对平面与曲面工件均能展现出较强的表面织构制备能力和适应性.
In view of the difficulty of efficiently preparing the surface texture on the non-planar workpiece by the conventional mask electrolysis, on the basis of designing and developing the cathode of the special tool which is integrated into the functional structure such as liquid inlet, liquid discharge and diversion, A micro-pit technology for the electrolytic machining of the active matrixes filled with inter-polar flexible porous materials is proposed. The flow field between the electrodes is numerically simulated and optimized. The core process parameters such as mask thickness, voltage between electrodes, pressing force and pulse parameters are analyzed experimentally On the geometric characteristics of micro-pits and their distribution characteristics.Based on the optimized process conditions, micro-pit arrays with uniform geometrical features were fabricated on the stainless steel flat and cylindrical surfaces, respectively. The surface and surface of the workpiece can show a strong surface texture preparation capacity and adaptability.