Electrodischarge machining

The special issue of micro injection molding applied for polymer heat exchangers will not be considered here. Additionally, for MEMS-like systems discussed above, other techniques, mostly based on etching, e.g. deep reactive ion etching (DR1E), are applied [20, 71, 86]. These techniques allow for future mass production of the small-scale (sub-watt fuel processors) devices to which they are applied. 

Micro milling was applied frequently in many early applications of micro structuring. Microfabrication of the parallel channels was performed by micro milling of metal tapes at the Karlsruhe Research Center (Forschungszentrum Karlsruhe) [138], In the case of aluminum alloys, ground-in monocrystalline diamonds were used [139], In the case of iron alloys, ceramic micro tools have to be used owing to the incompatibility of diamonds with that material [44], It is certainly a useful tool for experimental work and rapid prototyping, but not a choice with respect to future mass production. 

Two types of EDM, which is controlled spark micro machining under a dielectric fluid, exist. They are namely EDM die-sinking, where an electrode is moved into 

---

Murali M, Yeo SH. Rapid biocompatible micro device fabrication by micro electrodischarge machining. Biomed Microdevices 2004 6 41-5. 

Machinability. Many friction stir tools are designed with features that must he machined, ground, or electrodischarged machined into the tool. Any material that cannot he processed to the required tool design should not he considered. 

Rapid production of thin, burr-free components where techniques such as stamping, wire-electrodischarge machining (WEDM), and laser beam machining (LBM) are costly... 

WEDG is a process similar to electrodischarge machining but with support of the wire to reduce vibration and increase the accuracy. It also allows to remove minimal amounts of workpiece due to extremely short pulses. Combined with cemented tungsten carbide as tool material with a grain size of 0.6 pm, USM mills can be manufactured (Egashira et al. 2011). 

Uematsu, T. Suzuki, K. Yanase, T. Nakagawa, T. Bekrenev, N. A new complex grinding method for ceramic materials combined with ultrasonic vibration and electrodischarge machining. The Winter Annual Meeting of the ASME, Chicago, IL, USA, 1988. 

An Application of Non-Linear Goal Programming in Electrodischarge Machining of Composite Material... 

---