Electron beam gun provides high velocity electrons over a very small spot size. Electron beam machining is a process in which highvelocity electrons are concentrated into a narrow beam with a very high planar power density. It deals with the latest machining processes named as. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. This process is used in many applications, including drilling, cutting, annealing, and welding. 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. 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.
Mechanical engineering n p t e l national programme on. Electron beam, plasma beam and ion beam machining video. Mar 17, 2016 electron beam machining ebm is a thermal process. Electron beam machining ebm and laser beam machining lbm are thermal processes considering the mechanisms of material removal. Electrical engineering video lectures from nptel, iit, mit. Advanced machining processes online course video lectures by. Further, the beam needs to be manoeuvred if required by the gun. Nov 26, 2012 electron beam machining compilation michael starks. The workpiece in electron beam machining is held in a. Applications of electric discharge machining process. Notes on electron beam machining ebm me mechanical. Electron beam machining can machine metallic as well as nonmetallic workpiece.
Paul,department of mechanical engineering, iit kharagpur. 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. 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. The surreybased company, electron beam processes, employs 32 people. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. So, due to this, edm is particularly useful in machining of small holes, orifices, slots in diesel fuel injection nozzles, airbrake valves and aircraft engines etc. By the end of this lecture, the student will learn. Advanced machining processes online course video lectures. Define advantage and disadvantage of electron beam. Nanopore formation by lowenergy focused electron beam. The applications of the electron beam machining technology. Electron beam machining ebm diagram, working, advantages. 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.
Electron beam machining is required to be carried out in vacuum. The source of water vapor is either residual gas in the vacuum chamber or. Lecture 40 electron beam machining and laser beam machining. Electronbeam machining is a process in which highvelocity electrons are concentrated into a narrow beam with a very high planar power density. Mar 11, 2016 applications of electric discharge machining process.
A detailed notes on electron beam machining process, and surely helps you. This document is highly rated by electrical engineering ee. Lecture notes on modern manufacturing process dr pramod. Electron beam, plasma beam and ion beam machining youtube. The applications of the electron beam machining technology in. Nontraditional machining, utilizing electrical, chemical, and. 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. 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. Contact electron beam engineering, electron beam engineering provides services throughout the u. Electron beam equipment eb welding machines electron beam. Electron beam machining 1 is a metal removing process where high velocity. They produce permanent joint between the parts to be assembled. Lecture series on manufacturing processes ii by prof.
The electron beam is a flow of electrons with energy. The construction and working principle of the electron beam gun would be discussed in the next section. Continuing our series of short notes on unconventional machining for gate mechanical engineering, here is the second process electron beam machining ebm. Ebm is a process for machining materials with the use of high velocity beam of electrons. 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. Smart material, adaptive structures and intelligent mechanical systems iitk. The modular architecture of ebess beamer series addresses various customer requirements. 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. Abstract electron beam is generated in an electron beam gun. 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 main goal is to give to new comers a clear and efficient overview of the domain.
Electron beam machining can be used to accurately cut or bore a wide variety of metals. Module 3 selection of manufacturing processes nptel. Electron beam machining ebm kcg college of technology. 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. Electronbeam machining can be used to accurately cut or bore a wide variety of metals. Short notes for gate mechanical engineering electron beam. Electron beam machining compilation michael starks. This document is highly rated by electrical engineering ee students and has been viewed 739 times. These services include design, product improvement, electron beam and tig welding, ndt, cnc machining and project management. Search video courses nptel engineering video lectures. Electron beam and laser beam module 9 non conventional.
Introduction of laser beam machining process material removal rate of lbm heat conduction. Each machine can be configured with a wide range of standard and customized chamber sizes, power requirements, energy saving features, rapid cycling, and more. Ebm can be used for very precise cutting or boring of a wide variety of metals. The research situation of the previous various electron beam machining methods and applications was discussed, and the various. 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 beam machining the process and its applications. The beam crosssection is then focused and directed toward the work piece, creating heat and vaporizing the material. The subsystems in ecm, advantages and applications. Electronics nptel online videos, courses iit video lectures. 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. A wide variety of electron beam machine options are available to you, such as coating, substrate, and type. 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. 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.
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. Jain from iit kanpur made available by nptel elearning initiative. The workpiece is held in a vacuum chamber and the electron beam is. 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. The electron beam as a tool is the business basis of all company units of global beam technologies ag. In electron beam machining, as the electrons strikes the work piece. Electron probe micro analysis course materials geol 619.
These courses are based on the curriculum of iits and iisc provided under nptel. About 5% of these are metal coating machinery, 1% are spot welders, and 1% are laser welders. Nanopore formation by lowenergy focused electron beam machining. Depending upon the intensity of heating the workpiece can melt and vaporize. Based on his work experience, francis martin talk explain the various type of electron beam and xray equipment. Sharma, department of mechanical engineering, iit roorkee. I have some experience with electron beam technology, and found your description very thorough and accurate. Advanced machining processes video lectures mechanical.
Electron beam machining electron cathode free 30day. Electron beam processes production control software. Capability of making very small holes and slots with high pre. The electron beam melting is a process applied in case of some electron beam machining methods.
Electron beam technology is used worldwide with an increasing tendency. They are mainly used to assemble many parts to make a system. The cathode is generally made of tungsten or tantalum. Electron beam machining is a thermal process used for metal removal during the machining process. Nternational sciences and ngineering ol o eptember finite. Electron beam equipment eb welding machines electron. Mechanical engineering assignment help, define advantage and disadvantage of electron beam machining, define advantage and disadvantage of electron beam machining advantage 1. This will generate high heat energy and melts and vaporize metal from work piece. In the electron beam machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece. Function is to generate, shape and deflect the electron beam to drill or machine the workpiece. Lecture 17 electron beam machining ebm edit lesson digimat. This course covers lessons in tool geometry, mechanism of chip formation, orthogonal and oblique cutting, cutting temperature, control of cutting temperature and cutting fluid application, advanced tool materials, abrasive process, gear manufacturing, electro chemical machining, electro discharge machining, electron beam machining and laser.
Electron beam machining is a nonconventional machining process or nontraditional process. 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. They cannot be separated easily by application of forces. Farrel company division, usm corporation, ansonia, conn. Nptel provides elearning through online web and video courses various streams. Short notes for gate mechanical engineering electron. Even today, new applications are being developed and used industrially, especially where other beam processes reach their limits. Nanotechnology 21 2010 375301 p s spinney et al figure 1.
In the electrical beam machining, electrical energy is used to generate the electrons with high energy. Absence of mechanical contact between work piece and tool. 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. Nptel provides elearning through online web and video courses. Other articles where electronbeam machining is discussed. It is a nontraditional machining process in which no physical tool is used. In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. Lecture 17 electron beam machining ebm edit lesson. Joining of materials joining includes welding, brazing, soldering, adhesive bonding of materials. Even today, new applications are being developed and used industrially, especially where. Electron beam machining free download as powerpoint presentation. The ebm technique is used for cutting fine holes and slots in any material.