NEW TECHNOLOGIES | ARTICLE


Summary The PEM process exhibits many machining advantages compared to other processes. Benefits of PEM include: • Produces features that are difficult or impossible to attain by other means • Extremely long tool life • No burrs or material deformation • No machining stresses • Hardened metals can be machined • Simultaneous machining of multiple features • Excellent surface finish • Simultaneous multi-part machining with no cycle time penalty


As a result of these features of the PEM process, typical post- processing of machined components such as deburring, edge radiusing, and polishing are not necessary. Because the PEM process allows machining of hardened components, concerns about feature dimensions after heat treating are eliminated. Since PEM is not a thermal process, features and surfaces do not exhibit thermal damage.


The PEM machining process is an advanced electrolytic metal removal technology capable of machining a variety of geometry features on or in metal workpieces. The relatively fast metal removal rate (typically eight to 20 times faster than EDM) and excellent surface finish (typically 0.02 to 0.2 microns Ra) makes PEM a manufacturing process of choice for many applications.


PEM Technologies LLC www.pemtechnologies.com


<< Figure 11: PEMed automotive part. >>


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