Discharge machining

Electrical discharge machining Electrochemical milling Electron beam machining Laser beam machining Ultrasonic machining... 

Other abrasive jet machining Electrostatic painting Electrical discharge machining Electrochemical machining... 

The main factors governing hydrogen embrittlement are the metal surface films that can restrict hydrogen absorption, the effect of electrical discharge machining that may... 

Because rhenium is very difficult to machine with carbide tools and other conventional methods, electrical-discharge machining (EDM), electrochemical machining (ROM), abrasive cutting, or grinding is... 

E E(t) EDM EDTA EDX EHD EKI EO EOF ESI-MS Ez Activation energy Exit-age distribution function Electro-discharge machining Ethylene-diamine-tetraacetic acid Energy dispersive X-ray Electrohydrodynamic Electrokinetic instability Electroosmotic-Electroosmotic flow Electrospray ionization mass spectrometry Electric field... 

HF etching (4 min, 1 mm dia., 145 um deep) C02 laser drilling Ultrasonic abrasion Electrochemical discharge machining Powder blasting... 

FIGURE 2.10 Physical set-up for electrochemical discharge machining of a glass plate [135], Reprinted with permission from the Institute of Physics Publishing. 

Liquid-phase carbonization occurs for some precursors, such as pitches, which become viscous fluids before carbonization. This process has been used to produce various polycrystalline graphite blocks for steel refining and electrical discharge machining, jigs for the growth of semiconductor crystals, structural components of nuclear reactor, etc. 

To make tiny features, mold makers can use an unconventional technique such as reactive ion etching, developed at the Georgia Institute of Technology in Atlanta. The mold makers use reactive ions to knock metal atoms out of a mold surface. Mold makers can use lasers to create extremely small features such as small holes that can not be made with a conventional electronic discharge machine (EDM). 

Ultrasonic machining (USM) is also of particular importance when very hard type materials are to be cut. As an assist to drilling, HDM energy can extend the drill life when producing holes in reinforced plastics. If the plastic is conductive, electrical discharge machining (EDM) or electrochemical machining (ECM) may be useful. 

In a scroll discharge machine, the solids deposited on the wall of the bowl are removed by a scroll (a helical screw conveyer), which revolves at a slightly different speed from the bowl. Scroll discharge centrifuges can be designed so that solids can be washed and relatively dry solids be discharged. 

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