Introduction the focused ion beam fib microscope has gained widespread use in fundamental materials studies and technological applications over the last several years. Function is to generate, shape and deflect the electron beam to drill or machine the workpiece. Micromachining seminar report, ppt, pdf for mechanical. Finiteelement simulation of electron beam machining ebm process. Electron beam welding process, applications and equipment. When this high velocity electron strikes the workpiece, it melts and vaporizes the material from the workpiece.
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. For the love of physics walter lewin may 16, 2011 duration. Introduction electron beam machining is one of the examples. Electron beam machiningebm free download as powerpoint presentation.
Ion beam machining or etching is generally a surface finishing process in which the material removal takes place by sputtering of ions. Laser beam machining lbm is one of the most widely used thermal energy based noncontact type advance machining process which can be applied for almost whole range of materials. Our electronpowered innovation helps create improved materials, cleaner processes and. In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. It is an iniatior of newer tecniques that could be benefical for industries. The power needed to operate the ecm is obviously electrical. The basic functions of any electron beam gun are to generate free electrons. This report focuses on the top players in north america, europe, china, japan. Application overview by fibsem and tem characterization of nb coating in hieisolde qwr superconducting accelerating cavities. Electron beam machining can machine metallic as well as nonmetallic workpiece. Electrochemical machining ecm seminar with pdf report. The ebm machine uses an electron beam gun to melt metal powder at 70 micron layer thickness, and builds solid details that have homogeneous material structure. Electron beam machining ebm a magnetic deflection coil is used to make electron beam circular and to focus electron beam at a point localized heating the process is carried out in a vacuum chamber to. View electron beam machining process ppts online, safely and virusfree.
The electron beam melting and refining of metals is accomplished using. Ebm can be used for very precise cutting or boring of a wide variety of metals. Electron beam machining ebm a magnetic deflection coil is used to make electron beam circular and to focus electron beam at a point localized heating the process is carried out in a vacuum chamber to prevent electrons from colliding with molecules of the atmospheric air and to prevent tungsten filament from getting oxidizing with air. Electronbeam machining ebm is a process where highvelocity electrons concentrated into a narrow beam are directed toward the work piece, creating heat. Electron beam machining ebm and laser beam machining lbm are thermal processes considering the mechanisms of material removal. Laser beam is focussed for melting and vaporizing the unwanted material from the parent material. A detailed notes on electron beam machining process, and surely helps you. 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.
The process is different from electric discharge, electron beam, laser. 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. Electrochemical machining ecm is a metalremoval process based on the principle of reverse electroplating. Mar 17, 2016 electron beam machining ebm is a thermal process. 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. In the electron beam machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece.
In this process, particles travel from the anodic material workpiece toward the. Our electron powered innovation helps create improved materials, cleaner processes and greater efficiency. Pdf electron beam machining yunitha ratnadilla academia. The process is different from electric discharge, electron beam, laser and plasma arc machining in that the process does not depend on heating of the workpiece to the point of evaporation. Electron beam machining electron cathode avaliacao. This will generate high heat energy and melts and vaporize metal from work piece. Electron beam machining ebm kcg college of technology. Also explore the seminar topics paper on micromachining with abstract or synopsis, documentation on. Other articles where electronbeam machining is discussed. 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.
Ionbeam machining or etching is generally a surface finishing process in which the material removal takes place by sputtering of ions. Apr 28, 2014 this feature is not available right now. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam. Electron beam evaporators sales market report 2018 this report studies the global electron beam evaporators market status and forecast, categorizes the global electron beam evaporators market. The ebm machine uses an electron beam gun to melt metal powder at 70. View and download powerpoint presentations on electron beam machining ppt. Electron beam machining powerpoint ppt presentations powershow. The electron beam melting and refining of metals is accomplished using electron beams as a heating source in a vacuum chamber with a vacuum pressure of 58. Some materials are also very difficult or impossible to cut by. Electron beam machining introduction a brief history development of eb technology is closely related with. 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 melting an overview sciencedirect topics. Laser beam machining is a thermal machining process which uses laser beam to produce heat.
Electron beam machining is a thermal process used for metal removal during the machining process. Application overview by fibsem and tem characterization of nb coating in hieisolde qwr superconducting. Ebm is an alternate additive metal process in comparison to dmls, and is a perfect solution for large parts built using ti6ai4v. Electrochemical machining ecm is a machining process in which electrochemical process is used to remove materials from the workpiece. May 12, 2017 electrochemical machining ecm is a machining process in which electrochemical process is used to remove materials from the workpiece. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining processes electrical, chemical, thermal, hydrodynamic, lasers automation began when lathes were introduced in 1700s. 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.
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 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. Electron beam machining free download as powerpoint presentation. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining processes. It is a nontraditional machining process in which no physical tool is used.
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. Mar 31, 2017 it is a nontraditional machining process in which no physical tool is used. Electron beam machining ebm diagram, working, advantages. Nptel mechanical engineering manufacturing processes ii.
Electron beam machining powerpoint ppt presentations. Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work. Explore micromachining with free download of seminar report and ppt in pdf and doc format. This process is used in many applications, including drilling, cutting, annealing, and welding. 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 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 machiningebm electron machining free. The kinetic energy of the electrons, upon striking the workpiece, changes to heat, which vaporizes. A current of electrolyte fluid carries away the deplated material before it has a chance to reach the machining tool. Also explore the seminar topics paper on micromachining with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. 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. In an electron beam machining, the electrons strike the. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. Electron beam machiningebm electron machining free 30.
Laser beam machining or more broadly laser material processing deals with machining and material processing like heat treatment, alloying, cladding, sheet metal bending etc. In the process, workpiece is taken as anode and tool is taken as cathode. The two electrodes workpiece and tool is immersed in an electrolyte such as nacl. Oct 14, 2016 for the love of physics walter lewin may 16, 2011 duration. 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 is process in which high velocity electrons are concentrated in a narrow beam and then directed towards the workpiece for machining. The applications of the electron beam machining technology in. 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. Mar 30, 2017 today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Plasma arc machining process, diagram, advantages and. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. Presentation pdf available may 2019 with 2,890 reads. Focus ion beam fib its principles and applications for. Electron beam melting and refining ebmr in a vacuum using an intense electron beam is a widely used, ecologicallyfriendly method.
The cathode is generally made of tungsten or tantalum. There are many specifications to this power, the current density must be high, the difference between the tool and the work piece must be low for higher accuracy, thus the voltage must be low to avoid a short circuit and the control system uses some of. Further, the beam needs to be manoeuvred if required by the gun. 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. 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 materials.
Electron beam machining, the gun in ebm is used in pulsed mode. Aug 24, 2016 electrochemical machining ecm seminar with pdf report. The ebm technique is used for cutting fine holes and slots in any material. 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 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 is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. In this process, particles travel from the anodic material workpiece toward the cathodic material machining tool. Plasma arc machining is a roughing operation to an accuracy of around 1. Nanotubes, submitted for presentation at the 8th joint.