The workpiece is held in a vacuum chamber and the electron beam is. Advanced machining processes online course video lectures by. 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. Electron beam machining electron cathode free 30day. Ebm can be used for very precise cutting or boring of a wide variety of metals. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. Mar 17, 2016 electron beam machining ebm is a thermal process. Electron beam processes production control software. Nanotechnology 21 2010 375301 p s spinney et al figure 1. Lecture series on manufacturing processes ii by prof. Electron beam machining can machine metallic as well as nonmetallic workpiece.
Electron beam machining ebm kcg college of technology. The surreybased company, electron beam processes, employs 32 people. This document is highly rated by electrical engineering ee. Ebm is a process for machining materials with the use of high velocity beam of electrons. Continuing our series of short notes on unconventional machining for gate mechanical engineering, here is the second process electron beam machining ebm. Electron beam machining is a thermal process used for metal removal during the machining process. This process is used in many applications, including drilling, cutting, annealing, and welding. They are mainly used to assemble many parts to make a system. This document is highly rated by electrical engineering ee students and has been viewed 739 times.
They cannot be separated easily by application of forces. 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. Electron beam machining free download as powerpoint presentation. May 02, 2020 electron beam and laser beam module 9 non conventional machining lesson 40 electrical engineering ee notes edurev is made by best teachers of electrical engineering ee. Lecture notes on modern manufacturing process dr pramod. The electron beam as a tool is the business basis of all company units of global beam technologies ag.
Mechanical engineering assignment help, define advantage and disadvantage of electron beam machining, define advantage and disadvantage of electron beam machining advantage 1. Lecture 29 electron beam, plasma beam and ion beam machining nptel video lecture topic list created by linuxpert systems, chennai get digimat digital media access terminal for highspeed video streaming of nptel and educational video courses in lan. Advanced machining processes video lectures mechanical. Electron beam, plasma beam and ion beam machining youtube. Lecture 40 electron beam machining and laser beam machining. Contact electron beam engineering, electron beam engineering provides services throughout the u. Electrical engineering video lectures from nptel, iit, mit. The subsystems in ecm, advantages and applications. The electron beam polishing equipment technology is brought forward and its characteristic is explained because general processing method cant obtain preferable machining efficiency and product. 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.
Nanopore formation by lowenergy focused electron beam machining. The workpiece in electron beam machining is held in a. The source of water vapor is either residual gas in the vacuum chamber or. The research situation of the previous various electron beam machining methods and applications was discussed, and the various. 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. Abstract electron beam is generated in an electron beam gun. It deals with the latest machining processes named as. Jul 16, 2015 may 02, 2020 electron beam and laser beam module 9 non conventional machining lesson 40 electrical engineering ee notes edurev is made by best teachers of electrical engineering ee.
Capability of making very small holes and slots with high pre. 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. Lecture 17 electron beam machining ebm edit lesson. Electron beam technology is used worldwide with an increasing tendency. I have some experience with electron beam technology, and found your description very thorough and accurate. Electron beam machining ebm and laser beam machining lbm are thermal processes considering the mechanisms of material removal. 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. This will generate high heat energy and melts and vaporize metal from work piece. The main goal is to give to new comers a clear and efficient overview of the domain. In electron beam machining, as the electrons strikes the work piece. The ebm technique is used for cutting fine holes and slots in any material. These courses are based on the curriculum of iits and iisc provided under nptel. Lecture 17 electron beam machining ebm edit lesson digimat. 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.
Electron probe micro analysis course materials geol 619. Introduction of laser beam machining process material removal rate of lbm heat conduction. Advanced machining processes online course video lectures. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. The beam crosssection is then focused and directed toward the work piece, creating heat and vaporizing the material. Farrel company division, usm corporation, ansonia, conn. Sharma, department of mechanical engineering, iit roorkee. A wide variety of electron beam machine options are available to you, such as coating, substrate, and type. Electron beam machining 1 is a metal removing process where high velocity. Electron beam machining the process and its applications. The kinetic energy of the electrons, upon striking the workpiece, changes to heat, which vaporizes. Further, the beam needs to be manoeuvred if required by the gun. Search video courses nptel engineering video lectures. Nov 26, 2012 electron beam machining compilation michael starks.
Electron beam machining compilation michael starks. Electron beam machining can be used to accurately cut or bore a wide variety of metals. About 5% of these are metal coating machinery, 1% are spot welders, and 1% are laser welders. Depending upon the intensity of heating the workpiece can melt and vaporize. The cathode is generally made of tungsten or tantalum. Based on his work experience, francis martin talk explain the various type of electron beam and xray equipment. Short notes for gate mechanical engineering electron beam. Electron beam and laser beam module 9 non conventional. 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. Electron beam equipment eb welding machines electron. 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. Electronbeam machining is a process in which highvelocity electrons are concentrated into a narrow beam with a very high planar power density. Electrical engineering video lectures tutorials lecture 16 power ports lecture 24 dc machines part 2 lecture 15 power factor lecture 25 dc generators lecture 22 the practical transformer part 3 lecture 18 transformer basic part 2 lecture 27 dc motors lecture 26 dc generators 2 lecture 37 induction motor 2 lecture 20 the.
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. Electron beam, plasma beam and ion beam machining video. The construction and working principle of the electron beam gun would be discussed in the next section. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. The modular architecture of ebess beamer series addresses various customer requirements. Electronics nptel online videos, courses iit video lectures. Short notes for gate mechanical engineering electron. The applications of the electron beam machining technology. Nanopore formation by lowenergy focused electron beam.
By the end of this lecture, the student will learn. The electron beam is a flow of electrons with energy. Module 3 selection of manufacturing processes nptel. The applications of the electron beam machining technology in. Nov 04, 20 based on his work experience, francis martin talk explain the various type of electron beam and xray equipment. These services include design, product improvement, electron beam and tig welding, ndt, cnc machining and project management. Smart material, adaptive structures and intelligent mechanical systems iitk. Electron beam equipment eb welding machines electron beam. Notes on electron beam machining ebm me mechanical.
Joining of materials joining includes welding, brazing, soldering, adhesive bonding of materials. Electron beam machining is a process in which highvelocity electrons are concentrated into a narrow beam with a very high planar power density. Each machine can be configured with a wide range of standard and customized chamber sizes, power requirements, energy saving features, rapid cycling, and more. Mar 11, 2016 applications of electric discharge machining process. Even today, new applications are being developed and used industrially, especially where other beam processes reach their limits. Click on any video lecture link to view and download that video. Nontraditional machining, utilizing electrical, chemical, and. Electron beam machining ebm diagram, working, advantages. Mechanical engineering n p t e l national programme on. Electron beam machining is a nonconventional machining process or nontraditional process. In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. A brief description of the major system components for both the electron microprobe and scanning electron microscope followed by an introduction to elastic and inelastic scattering of electrons and associated principles.
Applications of electric discharge machining process. 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. Electron beam gun provides high velocity electrons over a very small spot size. The electron beam melting is a process applied in case of some electron beam machining methods. Other articles where electronbeam machining is discussed. Nptel provides elearning through online web and video courses. It is a nontraditional machining process in which no physical tool is used.
Jain from iit kanpur made available by nptel elearning initiative. Electron beam machining is required to be carried out in vacuum. Nptel syllabus advanced machining processes video course course outline this course on advanced machining processes is also known as unconventional machining processes, modern machining processes, and new technology. Electronbeam machining can be used to accurately cut or bore a wide variety of metals. 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. Nternational sciences and ngineering ol o eptember finite.
Absence of mechanical contact between work piece and tool. A detailed notes on electron beam machining process, and surely helps you. Function is to generate, shape and deflect the electron beam to drill or machine the workpiece. Define advantage and disadvantage of electron beam. Surface finish is better and kerf width is narrower than those for other thermal cutting processes.
Paul,department of mechanical engineering, iit kharagpur. They produce permanent joint between the parts to be assembled. In the electron beam machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece. Even today, new applications are being developed and used industrially, especially where. Nptel provides elearning through online web and video courses various streams.
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