Evaluation of Shaping Accuracy upon Electrochemical Machining of Metals

Electrochemical dimensional machining (ECDM) is based on the local high rate anodic dissolution of metals [1–5]. Upon ECDM of metals and alloys, the following results are achieved: the provision of high rates of anodic dissolution, the quality of the machined surface, and shaping accuracy both in terms of the shape and dimensions. High rates of anodic dis� solution of the majority of metals and alloys, as well as the quality of the formed surface, are implemented by way of the selection of the appropriate electrolyte solutions and modes of electrochemical machining [6]. At the same time, the achievement of satisfactory accuracy of electrochemical shaping is a far more complicated problem. The complicity of its solution is related to the fact that, for simultaneous provision of, for instance, productivity and accuracy, it is necessary to meet mutually exclusive conditions. For example, electrolytes with sufficient electric conductance and