Electron beam machining equipment the basic functions of any electron beam gun are to generate free electrons at the cathode, accelerate them to a sufficiently high velocity and to focus. Introduction ebm electron beam machining ebm is a thermal material removal process that utilizes a focused beam of highvelocity electrons to perform highspeed drilling and. To focus the electron beams electrostatic or electro magnetic lenses are used. Electronbeam eb machining is a powerful method for micro and nanofabrication because the beam can be focused to a diameter of the order of a few nanometers. The main problem in prebunched fels is the problem of beam bunching. The kinetic energy of the electrons, upon striking the workpiece, changes to heat, which vaporizes. This process is used in many applications, including drilling, cutting, annealing, and welding. Ptr is an electron beam welding systems manufacturer and contract welding service provider on the leadingedge of electron beam and vacuum welding technology. The beam crosssection is then focused and directed toward the work piece, creating heat and vaporizing the material. Other articles where electronbeam machining is discussed. This property permits the fabrication of nanoscale patterns by using an ebsensitive polymer resist in a process called eb lithography ebl.
Mar 28, 2016 introduction ebm electron beam machining ebm is a thermal material removal process that utilizes a focused beam of highvelocity electrons to perform highspeed drilling and cutting. The modular architecture of ebess beamer series addresses various customer requirements. In electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. The workpiece in electron beam machining is held in a. Electron beam melting ebm is a metal additive manufacturing technology that uses an electron beam to melt layers of metal powder. Essentially, the electron beam machining is based on the effects generated in the workpiece. The most common ion beams are of singlycharged ions.
About us electron beam drilling capabilities applications contact us. In addition to making eb and laser welding equipment, ptr assists customers with weld process development and provides maintenance and spares support for electron beam welding systems. Electron beam welding componentsupgrades at precision. Oct 29, 2017 education is strength in this video we can learn electron beam machining and advantages of electron beam machining, applications of electron beam machining. Sharma, department of mechanical engineering, iit roorkee. Laser beam machining lbm, response surface methodology rsm, genetic algorithm ga, optimization. A variety of ion beam sources exists, some derived from the mercury vapor thrusters developed by nasa in the 1960s. Define advantage and disadvantage of electron beam machining. Ion beams have many uses in electronics manufacturing principally ion implantation and other industries. Each machine can be configured with a wide range of standard and.
Chinese, japanese, german, italian what is electron beam drilling ebd. Electron beam and laser welders electron beam welding ptr. Feb 06, 2016 the electron beam traveling at a speed of. The ebm technique is used for cutting fine holes and slots in any material. Ebm can be used for very precise cutting or boring of a wide variety of metals. The influence of the input parameter in case of electron beam. A process which uses highvelocity electrons to heat the workpieces to be cut explanation of electronbeam cutting. Lecture 17 electron beam machining ebm edit lesson digimat. Through introduction of the principle and characteristics of electron beam machining technology, the application status and application instance of electron beam in research of materials science and materials processing in recent years were introduced in detail.
Sunil pathak 2 process principle continued the process of heating by an electron beam can be used for annealing, welding, or machining. Ramirez 1,2, edwin martinez 1,2, jennifer hernandez 1,2, krista n. Electron source is an electron gun several times the intensity of a tv gun. The source of water vapor is either residual gas in the vacuum chamber or.
Electron beam welding systems, eb welders ptrprecision. Electron beam machining electron cathode free 30day. Contact electron beam engineering, electron beam engineering provides services throughout the u. The comprehensive directory provides access to full contact and ability. Electronbeam machining is a process in which highvelocity electrons are concentrated into a narrow beam with a very high planar power density. Absence of mechanical contact between work piece and tool. Electron beam eb machining is a powerful method for micro and nanofabrication because the beam can be focused to a diameter of the order of a few nanometers. Electron beam machining ebm is a thermal machining process in which highvelocity electrons concentrated into a narrow beam are used for instantly heating, melting, or vaporizing the material. In this process, a laser beam is focused for melting and vaporizing to. Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work producing intense heating. Even today, new applications are being developed and used industrially, especially where other beam processes reach their limits.
Depending upon the intensity of heating the workpiece can melt and vaporize. In electron beam machining, as the electrons strikes the work piece. The electron beam melting is a process applied in case of some electron beam machining methods. To focus the electron beams electrostatic or electro magnetic lenses are. Electron beam technology is used worldwide with an increasing tendency.
The cathode is generally made of tungsten or tantalum. Introduction laser beam machining lbm is a novel thermal energy based advanced. Generally electron beam machining is done in a high vacuum chamber to avoid the unnecessary scattering of the electrons. Specialist in electron beam welding large and small part capability. In lbm, surface roughness is one of important response. Advanced manufacturing processes amps electron beam. Electron beam manufacturers, service companies and distributors are listed in this trusted and comprehensive vertical portal. Cathode, to emit high negative potential electrons.
An ion beam is a type of charged particle beam consisting of ions. About 5% of these are metal coating machinery, 1% are spot welders, and 1% are laser welders. Nanopore formation by lowenergy focused electron beam. Lecture 17 electron beam machining ebm edit lesson.
Electron beam welding is so clever that many people dont appreciate its potential. A detailed notes on electron beam machining process, and surely helps you. Parametric analysis of cutting parameters for laser beam. Introduction laser beam machining lbm is a novel thermal energy based advanced machining process which can be used for machining a wide range of materials. Nternational sciences and ngineering ol o eptember finite. The construction and working principle of the electron beam gun would be discussed in the next section. Ebd is a thermal drilling process by which small through holes in the range of 0. Laser beam machining lbm is one of the advanced machining processes which are used for shaping almost whole range of engineering materials.
Kumar, p a course on advanced manufacturing processes, nptel. Electron beam machining ebm is a process where highvelocity electrons concentrated into a narrow beam are directed toward the work piece, creating heat and vaporizing the material. Continuing our series of short notes on unconventional machining for gate mechanical engineering, here is the second process electron beam machining ebm. This method produces deep welds without adding overly heat that can disadvantageous affect the properties of the surrounding metal.
Nanopore formation by lowenergy focused electron beam machining. Mar 17, 2016 electron beam machining ebm is a thermal process. Electron beam welding experts electron beam processes. Parameters controlled for an eb welder can be beam current, filament current, beam. First introduced in 1997 by swedish company arcam, ebm is ideal for manufacturing lightweight, durable and dense end parts. During this machining process, a small portion of metals is also eroded away. Hence, it was realize to develop some nonconventional machining methods known as advanced machining processes. Electron beam machining ebm is a thermal machining process in which highvelocity electrons concentrated into a narrow beam are used for instantly heating, melting, or vaporizing the.
Electron beam machining the process and its applications. An electron gun is basically a triode consisting of. Electron beam gun provides high velocity electrons over a very small spot size. Abstractelectron beam welding ebw is a wellestablished joining method in. Electron beam, plasma beam and ion beam machining youtube. Electron beam machining is a process in which highvelocity electrons are concentrated into a narrow beam with a very high planar power density. May 16, 2018 electron beam melting ebm is a metal additive manufacturing technology that uses an electron beam to melt layers of metal powder. Noone has more experience or expertise in the application of electron beam welding than electron beam processes. Essentially, the electron beam machining is based on the effects generated in the workpiece surface layers as a consequence of the penetration in this layer of electrons included in a high energy electron beam. Through introduction of the principle and characteristics of electron beam machining technology, the application status and application instance of electron beam in research of materials science and. Electron beam machiningbasic terms and working duration. Lbm is one of the advanced machining processes which are used for shaping almost whole range of engineering materials. Electron beam machining is a nonconventional machining process or nontraditional process. Electron beam machining free download as powerpoint presentation.
A wide variety of electron beam machine options are available to you, such as coating, substrate, and type. The process variables control electron beam power for an eb welder or arc and wire transfer for a fusion welding system. Each machine can be configured with a wide range of standard and customized chamber sizes, power requirements, energy saving features, rapid cycling, and more. Farrel company division, usm corporation, ansonia, conn. The process of electron beam welding is a method of making fusion weld. Electron beam welding ebw applications by industry ptr. Metal fabrication by additive manufacturing using laser. The workpiece is held in a vacuum chamber and the electron beam is. L microelectron beam welding and laser machiningpotentials of. The applications of the electron beam machining technology in. If a thin electron beam has a small energy spread, low transverse emittance and energy modulation, scheme 2 will work.
Short notes for gate mechanical engineering electron. Control parameters optimization of laser beam machining. Electron beam machining ebm diagram, working, advantages. Electron beam machining is required to be carried out in vacuum. Electron beam machining can machine metallic as well as nonmetallic workpiece. Aug 19, 20 electron beam and plasma welding processes duration. Metal fabrication by additive manufacturing using laser and. The influence of the input parameter in case of electron. Electron beam machining ebm and laser beam machining lbm are thermal processes considering the mechanisms of material removal. Electron beam and plasma welding processes duration. Electron beam machining ebm introduction electron beam machining is a thermal. In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. Electron beam equipment eb welding machines electron. Define advantage and disadvantage of electron beam.
Numerical simulation of the electron beam welding 1 simulation was based on actual experim ental results but the paper target was to compare the two methods described and to offer an alternative. Major applications of laser beam is in cutting of metals and non metals, soft. Nanotechnology 21 2010 375301 p s spinney et al figure 1. Jan 06, 2015 electron beam machining equipment the basic functions of any electron beam gun are to generate free electrons at the cathode, accelerate them to a sufficiently high velocity and to focus them over a small spot size.
Abstract electron beam is generated in an electron beam gun. Ebm is a process for machining materials with the use of high velocity beam of electrons. The beam crosssection is then focused and directed. Electron beam welding is a machine controlled process, with welding carried out in vacuum with no filler material, resulting in exceptional weld quality and repeatability. Education is strength in this video we can learn electron beam machining and advantages of electron beam machining, applications of electron beam machining. The electron beam as a tool is the business basis of all company units of global beam technologies ag.
Electron beam equipment eb welding machines electron beam. Short notes for gate mechanical engineering electron beam. Which of the following processes would be appropriate for cutting a narrow slot, less than 0. Electronbeam machining ebm is a process where highvelocity electrons concentrated into a narrow beam are directed toward the work piece, creating heat and vaporizing the material. Electron beam machining can be used to accurately cut or bore a wide variety of metals.
Capability of making very small holes and slots with high precision, in a short time in any material. Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work. The applications of the electron beam machining technology. Processing includes both high and lowvoltage welding equipment and high and medium vacuum variations. The electron beam is a flow of electrons with energy.
Pdf numerical simulation of the electron beam welding. Control parameters optimization of laser beam machining using. A pulsating stream of highspeed electrons produced by a generator is focused by electrostatic and electromagnetic fields to concentrate energy on a very small area of work. A detailed notes on electron beam machining process, and. Mechanical engineering assignment help, define advantage and disadvantage of electron beam machining, define advantage and disadvantage of electron beam machining advantage 1. Electronbeam machining ebm ebm equipment equipment is contained in vacuum 104 mm hg or more in order to ensure cutting energy. Lecture series on manufacturing processes ii by prof.
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