Electron-beam welding (EBW) is a fusion welding process in which a beam of high-velocity electrons is applied to two materials to be joined. It is mostly used to drill holes in any shape. As the electron strikes the workpiece, the kinetic energy of the electron changes into heat energy. Electron Beam Machining (EBM) is a machining process in which material is removed from the workpiece by focusing a beam of high-velocity electrons towards the workpiece. Electron beam machining (EBM) uses a focused beam of high-velocity electrons to remove material. Electron Beam Machining can machine metallic as well as nonmetallic workpiece. EBW is often performed under vacuum conditions to prevent dissipation of the electron beam. The whole process takes place in vacuum. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact. Electron beam machining is process in which high velocity electrons are concentrated in a narrow beam and then directed towards the workpiece for machining. This article provides a description of equipment used for EBM and discusses the process characteristics, applications, advantages, and disadvantages of electron beam drilling. The source of energy in electron beam machining is high velocity electrons. Electron beam exposure is a processing method that uses the effects of electron beam radiation (see Electron beam power density up to At W / cm2, the material where the electron beam strikes is locally melted; when the electron beam moves relative to the workpiece, the molten metal is continuously solidified. Workpiece is mounted on a CNC table so that holes of any shape can be machined using the CNC control and beam deflection in-built in the gun. The heat energy so produced is used to melt and vaporize the materials from the w/p. The Electron beam machining (EBM) process begins after the workpiece is placed in the work chamber and a vacuum is achieved. Electron beam guns are also provided with illumination facility and a telescope for alignment of the beam with the workpiece. A typical triode EBM gun functions in a manner very similar to an EBW gun. This phenomenon has been well understood since the development of electron microscopy when attempts to use the electron beam as a machining … In electron beam machining workpiece is held in. When high-speed electrons in a densely focused beam impact with the workpiece surface, most of the kinetic energy of the electrons is converted into heat energy. In an electron beam machining, the electrons strike the workpiece with a high velocity. The appearance of EBM equipment is very similar to electron beam welding equipment. 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