It’s suitablefor batch production. PECM needs longer time and higher cost to conduct in the initialstage of the R&D, but once the process is determined, the electrolyte andelectrode could be in permanent use theoretically. Be equipped with machinetool with stable performance, PECM can achieve batch production efficiently; Inthis case, the average cost of PECM would decrease greatly, even far lower thanthe conventional machining techniques on the long run.

There need specified cathode and device to shape workpiece by ECM, and various technology parameters, including size and shape of electrode and tooling, movement control, electrolyte, are determined through trial and error processing tests before required form is achieved, containing preliminary design and machining, measurement, modified design and machining, and it will take 1 ~ 8 weeks or longer in some time. So there need to consume a great quantity of manpower and material resource, and cost higher. The flow schematic diagram of proofing test and technology development is shown as follows:

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The flow schematic diagram of PECM process development

For a technique development process, it needs long cycle (generally 1 ~ 8 weeks or longer sometimes) and high cost to achieve desired processing effects, including preliminary design and machining, measurement, modification of the tooling and electrode, multiple parameters adjustment. Once the development is completed, there would get relatively stable process of batch production, high precision repeatability processing, the low average cost, and that the main consume is electricity.