Electron Beam Machining EBM

Indonesia is a tropical country with about 144 million Ha of tropical forest, producing a large amount of natural polymers, mainly natural rubber and wood products. In 1991 the total production of natural rubber was about 1.36 million tonnes while the production of log was about 40 million. Such large amount and various kinds of natural polymers were subject to investigation by a number of research centers since before the second WW. Center for the Application of Isotopes and Radiation, using radiation technique as a tool to modify the property of various natural polymers in order to meet the industries. Several Cobalt-60 sources and electron beam machine (EBM) from a small scale to a pilot scale are available. Other polymers such as synthetic fibers also becoming a subject of investigation. 

Electron beam machining (EBM) had been used in aerospace and nuclear industry since 1960 for welding applications. EBM is also used for microdrilling, cutting, and engraving applications. In a vacuum chamber a tungsten cathode filament is heated to between 2500 and 3000 °C to emit electrons, which are focused by a magnetic or static lens system to the worlqjiece specimen, over a well-defined... 

EBM (EBM = electron beam melting) machine works with an electron beam. 

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