Such processes include ion beam machining ibm, focused ion beam fib machining and plasma discharge machining. Electron beam machining is required to be carried out in vacuum. A parabolic beam has no bending moment i know it is impractical to load it with a udl, but theoretically the load stress is completely axial. 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. Apply unconventional machining process in various industrial applications. Mar 17, 2016 electron beam machining ebm is a thermal process. Parametric analysis of cutting parameters for laser beam. The kinetic energy of the electrons, upon striking the workpiece, changes to heat, which vaporizes read more. Numerical control nc is the automation of machine tools that are operated by precisely programmed commands encoded on a storage medium, as opposed to controlled manually by hand wheels or. Electron beam machining ebm electron beam machining is a thermal nontraditional process, uses electrical energy to generate thermal energy for removing material. Nptel provides elearning through online web and video courses various streams. An ion beam is a type of charged particle beam consisting of ions. 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. Electronbeam machining ebm the ebm technique is used for cutting fine holes and slots in any material.
In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. Ebm can be used for very precise cutting or boring of a wide variety of metals. A variety of ion beam sources exists, some derived from the mercury vapor thrusters developed by nasa in the 1960s. 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. All aspects of mechanical, electrochemical and thermal processes are. Plasma arc machining process pdf 10 plasma arc machining.
Pdf transcriptions, html5 support, video subtitles for media player. Nov 04, 20 based on his work experience, francis martin talk explain the various type of electron beam and xray equipment. The construction and working principle of the electron beam gun would be discussed in the next section. The electron beam can be controlled very accurately, and machining. 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. Lbm is one of the advanced machining processes which are used for shaping almost whole range of engineering materials.
Electron beam, plasma beam and ion beam machining video. To learn about various unconventional machining processes, the various process parameters. The mechanism by which a laser beam removes material from the surface being worked usually involves a combination of melting and evaporation, although with some materials, such as carbon and. Sheet metal processes,sheet metal characteristics,bending,types of bending operations,drawing,applications,special forming. Some courses might have presentations or quiz papers uploaded, but rest of them. The technologies will utilize cutting edge materials and emerging capabilities including metallic processes, additive manufacturing, composites, and digital. Plasma arc machining is a nontraditional thermal process. In this process, a laser beam is focused for melting and vaporizing to. 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. Nontraditional machining, utilizing electrical, chemical, and. Mechanical engineering n p t e l national programme on. Ppt laser beam machining lbm powerpoint presentation. The electron beam as a tool is the business basis of all company units of global beam technologies ag. Live simple, live free tinyhouse prepper recommended for you.
The power needed to operate the ecm is obviously electrical. Nptel syllabus advanced manufacturing processes video course course outline the course covers the details of the advanced machining theory and practices, advanced machining processes, advanced metal forming processes, advanced welding processes and advanced foundry processes. Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work. Thus the work piece to be machined is located under the electron beam. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Laser beam machining used light energy from a laser to remove material by vaporization and ablation energy is concentrated optically laser emits either continuous or pulsed light beam 5 source. Hence, it was realize to develop some nonconventional machining methods known as advanced machining processes. Conventional machining processes and machine tools module. Laser beam machining and drilling lbm, plasma arc machining pam and electron beam. How to download notes directly in pdf format from nptel quora.
Understand the applications of plasma machining and chemical machining. Jan 06, 2015 electron beam machining process electron beam is generated in an electron beam gun. Types of ebeam machines scanning systems single beam system multiple beam system vector raster vector raster hybrid systems shaped beam character projection parallel exposure systems photocathode projection eimage projection flys eye lens projection pattern information is stored in masks high throughput less expensive. Design of curved beams structural engineering general. The deflecting coils allow the beam to have a range of movement of 12 mm. A wide variety of electron beam machine options are available to you, such as glass, steel.
Electronics nptel online videos, courses iit video. During this machining process, a small portion of metals is also eroded away, leaving a small cater. Laser beam machining lbm using long pulses has been used since long by focusing laser beam to a selective portion of material to create a desired feature on or internal to the substrate. It is a nontraditional machining process in which no physical tool is used. Nptel, online courses and certification, learn for free. Education is strength in this video we can learn electron beam machining and advantages of electron beam machining, applications of electron beam machining. Diy brick rocket stove cooking without electrical power duration. Non traditional manufacturing processes an overview. You can find them according to your branch and subject in the below link national mission on education. The mechanism of material removal is primarily by melting and rapid vaporisation. Ion beam machining is an important nonconventional manufacturing technology used in micronanofabrication, using a stream of accelerated ions to remove the atoms on.
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. Ion beams have many uses in electronics manufacturing principally ion implantation and other industries. Nov 15, 2017 you will find all pdf s and also as mp3 file for all video lectures which are in nptel. Introduction to machine learning sponsored by arihant. Otherwise the electrons would interact with the air molecules, thus they would loose their energy and cutting. 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. Nonconventional methods of machining are used for many engineering applications where the traditional processes fail to be costeffective. How to download all of the lectures in pdf for a course in. Real transformer noload condition, flux and magnetising current. Major applications of laser beam is in cutting of metals and non metals, soft. The electron beam is a flow of electrons with energy. Depending upon the intensity of heating the workpiece can melt and vaporize. The electron beam can be controlled very accurately, and machining tolerances of 0. Manufacturing processes i nptel online videos, courses.
Analyze the different elements of laser and electronic beam machining. Majority of video courses on nptel do not offer lecture notes for download. Electrochemical machining ecm seminar with pdf report. 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. In most of the transformer, there are losses due to various reasons and doesnt have the efficiency of the ideal transformer. You will find all pdf s and also as mp3 file for all video lectures which are in nptel. Ion beam, focused ion beam, and plasma discharge machining.
These kinds of transformer are termed as the real transformers. The main goal is to give to new comers a clear and efficient overview of the domain. The inlet water is typically pressurized between 0 4000 bars. Bifano an ionbeam microcontouring process is developed and implemented for. Laser beam machining lbm, response surface methodology rsm, genetic algorithm ga, optimization.
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. Otherwise the electrons would interact with the air molecules, thus they would loose their energy and cutting ability. A schematic of laser beam machining is shown in figure 12. Design of column base plates islamic university of gaza. In ebm, electrons are accelerated to high velocity as half of the light speed, then it is impinged to.
Edm machining process is also known as spark erosion machining. Analyze and simulate various industrial problems in advanced machining processes using ebm and lbm 16. Nov 26, 2012 diy brick rocket stove cooking without electrical power duration. Lecture notes institute of aeronautical engineering. Dec 07, 2016 electron beam machining is a kind of machining process by using highvelocity electron beam. The beam removes atoms from the workpiece by transferring energy and momentum to other articles where ion beam machining is discussed. Non traditional machining need for non traditional machining, abrasive jet machining, ultrasonic machining usm, water jet machining, electro chemical machining electrical discharge machining, electron beam machining and laser beam machining, equipment, process, process parameters and machining. Control parameters optimization of laser beam machining using. Capability of making very small holes and slots with high precision, in a short time in any material. Dynamic development in aircraft, automotive, chemical and. Such processing is carried out utilizing the energy of coherent photons or laser beam. Materials are removed by traversing in a direction parallel to the axis of rotation of axis or along a specified path to form a complex rotational shape.
Located at the same premises as ebe, our associate company, electron beam engineering services ebes provides electron beam welding and laser beam welding systems and weld tooling accessories. Even today, new applications are being developed and used industrially, especially where other beam processes reach their limits. Power electronics notes iit kharagpur faadooengineers. Learn for free, pay a small fee for exam and get a certificate. Conventional machining processes and machine tools moduleiv turning turning operation is a machining process and is used to produce round parts in shape by a single point cutting tool. In ibm a stream of charged atoms ions of an inert gas, such as argon, is accelerated in a vacuum by high energies and directed toward a solid workpiece. Electron beam, laser beam and plasma arc welding studies by c. Notes on electron beam machining ebm me mechanical.
Nternational sciences and ngineering ol o eptember finite. This method is not suitable for cutting hard materials. Banas united aircraft research laboratories i summary a direct comparison was made of electron beam, laser beam and arc welding processes in ti6alw alloy in nominal thicknesses of 0. Laser beam is appropriate for microtechnology due to its high lateral resolution, low heat input, and high flexibility. Absence of mechanical contact between work piece and tool. Define advantage and disadvantage of electron beam machining. Guide to machining carpenter specialty alloys guide to machining carpenter special ty all o ys carpenter technology corporation wyomissing, pa 19610 u. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance.
Mar 11, 2016 in electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. The beam removes atoms from the workpiece by transferring energy and momentum to. This notes are best for strength of material subject. 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. Electron beam technology is used worldwide with an increasing tendency. Laser beam machining laser beam machining is a thermal materialremoval process that utilizes a high energy, coherent light beam to melt and vaporize particles on the surface of metallic and non.
In electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. Water jet cutting uses the beam of water exiting the orifice to cut soft materials. The main attraction of edm over traditional machining processes such as metal. You can find them according to your branch and subject in the below link national mission on education through ict this was initiated by iit madras. Mechanical engineering manufacturing processes ii nptel. Laser beam machining or more broadly laser material processing deals with machining and material processing like heat treatment, alloying, cladding, sheet metal bending etc. 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 is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. This will generate high heat energy and melts and vaporize metal from work piece. Ecg, ech, ecde and stem electron beam, plasma beam and ion beam machining. In laser beam machining, a laser beam is focussed onto the targetworkpiece sur face figure 11.
Sharma, department of mechanical engineering, iit roorkee. Electron beam gun provides high velocity electrons over a very small spot size. The applications of the electron beam machining technology in. Jul 16, 2015 electron beam and laser beam module 9 non conventional machining lesson 40 electrical engineering ee notes edurev notes for electrical engineering ee is made by best teachers who have written some of the best books of electrical engineering ee.
Numerical control nc is a method of automatically operating a manufacturing machine based on a code letters, numbers and special characters. Electro chemical discharge machining ecdm laser beam machining lbm equipment and process parameters in lbm electrochemical machining ecm ecm kinematics and tool design the subsystems in ecm, advantages and applications variant processes in ecm. Ion beam machining machine tool technology britannica. Other articles where ion beam machining is discussed. Laser beam machining lbm is a valuable tool for drilling, cutting and milling of almost any material. An optical viewing system is required in order to allow the operator to see the work, in order to position the beam.
It is similar to the electron beam welding machine. Electron beam, plasma beam and ion beam machining tutorial of advanced manufacturing processes course by prof a. Numerical control wikipedia, the free encyclopedia. I tolerance is the total amount a dimension may vary and is the di erence between the upper maximum and lower. Basic working principle, configuration, specification. Electron beam machining ebm methods machining engineering. Electron beam machining process electron beam is generated in an electron beam gun. Mechanical engineering lecture notesall semesterfree. This process is used in many applications, including drilling, cutting, annealing, and welding. The milling machine removes metal with a revolving cutting tool called a milling cutter. Manufacturing technology i notes pdf details unit4. Ionbeam machining of millimeter scale optics prashant m. Ebm and lbm are typically used with higher power density to machine materials.
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