Electrochemical Machining (ECM)

概要

Electrochemical machining dissolves metal from a workpiece (anode) in a controlled pattern using a shaped cathode tool and flowing electrolyte (typically NaCl or NaNO₃ solution). Material removal rates of 0.5–15 mm³/s are achieved without tool wear, heat-affected zones, or mechanical stress. The process mirrors the shape of the tool electrode.

参加者

日常の例

Turbine blades for jet engines are precision-shaped by ECM to achieve complex airfoil profiles impossible to machine conventionally.

産業上の重要性

ECMは航空宇宙、医療インプラント、ダイ・モールド製造において硬質合金や複雑形状の加工に使われる。工具摩耗がなく、熱影響層も生じないため精密部品加工に最適。