Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. It is normally used for mass production and is used for working extremely hard materials or materials that are difficult to machine using conventional methods. Its use is limited to electrically conductive materials. ECM can cut small or odd-shaped angles,...
Found on
http://en.wikipedia.org/wiki/Electrochemical_machining
(from the article `machine tool`) ECM resembles electroplating in reverse. In this process metal is dissolved from a workpiece with direct current at a controlled rate in an ... ...processes: (1) in chemical milling the metal is removed by the etching reaction of chemical solutions on the metal; although usually applied to ... [2 rel...
Found on
http://www.britannica.com/eb/a-z/e/19
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