Nanopore formation by lowenergy focused electron beam machining. On this channel you can get education and knowledge for general issues and topics. This is a different process from electric discharge, electron beam, laser beam and plasma arc machining. Electronbeam machining ebm the ebm technique is used for cutting fine holes and slots in any material. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining, etc. Electrical machines ii youtube you can also try watching videos from this channel. Design of machine elements design of machine elements. Abstract electron beam is generated in an electron beam gun. Such processes include ion beam machining ibm, focused ion beam fib machining and plasma discharge machining. The main goal is to give to new comers a clear and efficient overview of the domain. The beam is then passed through a variable aperture.
Lecture 17 electron beam machining ebm edit lesson. 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. This process is used in many applications, including drilling, cutting, annealing, and welding. A wide variety of electron beam machine options are available to you, such as steel, glass. Ppt laser beam machining lbm powerpoint presentation. Ion beam machining is an important nonconventional manufacturing technology used in micronanofabrication, using a stream of accelerated ions to remove the atoms on the surface of the object. Sharma, department of mechanical engineering, iit roorkee. The modular architecture of ebess beamer series addresses various customer requirements. Jan 06, 2015 electron beam machining process electron beam is generated in an electron beam gun.
Major applications of laser beam is in cutting of metals and non metals, soft. Jain, department of mechanical engineering, iit kanpur. Electron beam, plasma beam and ion beam machining tutorial of advanced manufacturing processes course by prof a. Dec 07, 2016 electron beam machining is a kind of machining process by using highvelocity electron beam. Lecture 40 electron beam machining and laser beam machining. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. Nptel syllabus advanced manufacturing processes video course course outline the course covers the details of the advanced machining theory and practices, advanced machining processes. In this article we will discuss about the meaning and characteristics of electron beam machining ebm in industries.
Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work. Electron beam machining ebm electron beam machining is a thermal nontraditional process, uses electrical energy to generate thermal energy for removing material. In ebm, electrons are accelerated to high velocity as half of the light speed, then it is impinged to. In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. 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. Electron beam machining is required to be carried out in vacuum. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam. The electron beam is a flow of electrons with energy. Laser beam machining lbm, response surface methodology rsm, genetic algorithm ga, optimization. Electron beam gun provides high velocity electrons over a very small spot size. Education is strength in this video we can learn electron beam machining and advantages of electron beam machining, applications of electron beam machining.
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. Electron beam machining ebm advantages and disadvantages electron beam machining is a thermal process used for the metal removal during the machining process. Induction machines guru nanak dev engineering college, ludhiana. Parametric analysis of cutting parameters for laser beam. The beam removes atoms from the workpiece by transferring energy and momentum to. Induction machines 1 introduction the induction machine was invented by nikola tesla in 1888. Manufacturing processes i nptel online videos, courses.
Ecg, ech, ecde and stem lecture 29 electron beam, plasma beam and ion beam machining. Chemical processes chemical milling chm photochemical milling pcm need for unconventional machining. It is similar to the electron beam welding machine. Laser beam is appropriate for microtechnology due to its high lateral resolution, low heat input, and high flexibility. 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. Otherwise the electrons would interact with the air molecules, thus they would loose their energy and cutting. Laser stands for light amplification by stimulated emission of radiation. In this process, a laser beam is focused for melting and vaporizing to. Nptel provides elearning through online web and video courses various streams. The process of metal removal by electro chemical dissolution was known as long back as 1780 ad but it is only over the last couple of decades that this. Laser beam machining lbm lecture 24 equipment and process parameters in lbm.
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. Part 3 elaborates chemical and electrochemical machining processes. Laser beam machining lbm is a non conventional machining manufacturing process, a form of machining, in which a laser is directed towards the work piece for machining. Depending upon the intensity of heating the workpiece can melt and vaporize. The applications of the electron beam machining technology in. 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. Electrochemical machining ecm is a machining process in which electrochemical process is used to remove materials from the workpiece. Electro discharge machining edm electron beam machining ebm laser beam machining lbm processes 2. Electron beam and plasma welding processes youtube. Electron beam machining ebm advantages and disadvantages. 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. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Nanopore formation by lowenergy focused electron beam machining this article has been downloaded from iopscience.
Electron beam, plasma beam and ion beam machining youtube. 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. A magnetic coil, which functions as a magnetic lens, repels and shapes the electron beam into a converging beam. Control parameters optimization of laser beam machining using.
Derived from the early scanning electron microscopes, the technique in brief. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. Lecture series on design of machine elements i by prof. Electron beam, plasma beam and ion beam machining video. Nptel online videos, courses iit video lectures well organized. Right from its inception its ease of manufacture and its robustness have made it a very strong candidate for electromechanical energy conversion.
Lbm is one of the advanced machining processes which are used for shaping almost whole range of engineering materials. Laser jet machining ljm electron beam machining ebm 4. 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. Hence, it was realize to develop some nonconventional machining methods known as advanced machining processes. Laser beam machining lbm is one amongst the foremost widely used thermal energy based noncontact kind advance machining method which may be applied for nearly whole vary of. Design of machine elements nptel online videos, courses. Electron beam technology is used worldwide with an increasing tendency. Ion beam, focused ion beam, and plasma discharge machining. Electro discharge machining edm electron beam machining ebm laser beam machining. Advanced machining processes video course mechanical. In this process, the material is removed with the help of a high velocity travelling at half the speed of light, i. 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.
Each machine can be configured with a wide range of standard and customized chamber sizes, power requirements, energy saving features, rapid cycling, and more. Ptr is an electron beam welding systems manufacturer and contract welding service provider on the leadingedge of electron beam and vacuum welding technology. Electron beam and laser beam module 9 non conventional. Nptel provides elearning through online web and video courses various. Laser beam welding with diagram your article library. Advanced machining processes dvd media storage type. Nov 26, 2012 fast extreme water jet cutter machine working, modern technology waterjet cutting compilation duration. 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. 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 laser welding device amplifies an input of light producing an extremely narrow and intensive beam on the weld surface with deep penetration. Nonconventional methods of machining are used for many engineering applications where the traditional processes fail to be costeffective. Advanced machining processes video course course outline there is a need for machine tools and processes which can accurately and easily machine the most difficulttomachine.
Introduction to advanced machining processes classification of. Paul,department of mechanical engineering, iit kharagpur. It is a nontraditional machining process in which no physical tool is used. Nternational sciences and ngineering ol o eptember finite. Working principle of electron beam machining in the electron beam gun the electric beam. Notes on electron beam machining ebm me mechanical. Even today, new applications are being developed and used industrially, especially where other beam. Electron beam machining, this was first reported by steigerwald in 1947, who designed a prototype of this particular machine. Hello everyone welcome to engineers academy topics covered. The construction and working principle of the electron beam gun would be discussed in the next section.
In electro chemical machining an electrolyte acts as a current carrier. Lecture 34 tool electrodes and dielectric fluids and electron beam machining lecture 35 mechanics of electron beam machining. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining. Basic working principle, configuration, specification.
A pulsed beam of coherent monochromatic light of high power density, commonly known as a laser light amplification by stimulated emission of radiation, is focused on to the workpiece surface causing it to vaporize locally. Invariance of magnetic moment and mirror confinement. 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. Where can one find the video lecture on electrical machine 2. Laser beam can very easily be focused using optical lenses as their wavelength ranges from half micron to around 70 microns.
Nptel electrical engineering video lecture online study material. The electron beam as a tool is the business basis of all company units of global beam technologies ag. During this machining process, a small portion of metals is also eroded away, leaving a small cater. Ebm can be used for very precise cutting or boring of a wide variety of metals. Introduction electron beam lithography is a specialized technique for creating extremely fine patterns 50 nm. Mar 17, 2016 electron beam machining ebm is a thermal process. Nptel video courses pack pdf format nptel user pack. Electron beam equipment eb welding machines electron beam. Nov 04, 20 based on his work experience, francis martin talk explain the various type of electron beam and xray equipment. In this video we have explained working of electron beam machining process. How electron beam machining works engineers academy. Nptel video lectures, iit video lectures online, nptel. Lecture series on manufacturing processes ii by prof. 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.
Chakraborty, department of mechanical engineering, iit kharagpur. After passing through the anode, the electron beam is diverging rapidly and traveling at approximately 150000 ms. Classification of metal removal processes and machine tools. Electron beam machining ebm methods machining engineering. Notes on electro chemical machining ecm me mechanical. Ion beam machining machine tool technology britannica. In ebm, first the electron is generated by the cathode and an annular biased grid does not allows the electron to diverge. Ion beam machining is generally a surface finishing process in which the material removal takes place by sputtering of ions. Mar 11, 2016 in electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. Machining processes have existed for a long time but it was only after the scientific study of these processes which started some fifty years ago that major improvements in tool design, tool materials and machining techniques where brought about. Electro chemical discharge machining ecdm laser beam machining lbm equipment and process parameters in lbm electrochemical machining. Even today, new applications are being developed and used industrially, especially where other beam processes reach their limits. Electron beam welding process, applications and equipment.
Advanced manufacturing processes mechanical engineering course from iit roorkee nptel lecture videos by dr. Electron beam machining ebm and laser beam machining lbm are thermal processes considering the mechanisms of material removal. Ultrasonic machining, water jet machining, abrasive water jet machining. In abrasive jet machining, a focused stream of abrasive particles, carried by high pressure air or gas is made to impinge on the work surface through a nozzle and the. 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. Other articles where ion beam machining is discussed. It is available from fractional horsepower ratings to megawatt levels. Introduction to electron beam lithography bostjan bercic bostjan. Electro chemical machining consists of following basic elements. The kinetic energy of the electrons, upon striking the workpiece, changes to heat, which vaporizes read more. Mechanical engineering manufacturing processes ii nptel.