Electron beam machining free download as powerpoint presentation. During the process, the complex products are easily obtained since all the machine parameters such as focus, power and the various mechanical motions are numerically controlled and computerized. Laser beam machining lbm, response surface methodology rsm, genetic algorithm ga, optimization. Electron beam machining market size research report, identifies new revenue opportunity in electron beam machining. Finally, the model is applied to create processing maps for an sebm process. May 02, 2017 laser beam machining lbm is a form of machining process in which laser beam is used for the machining of metallic and nonmetallic materials. During the process, the complex products are easily obtained since all. Nternational sciences and ngineering ol o eptember finite. Other articles where electronbeam machining is discussed. It is similar to the electron beam welding machine. We evaluated the defoaming process for removing pores from the sheets, distribution, processability and hole shape all based on the type of metal powder, and thermal characteristics based on the type. Ebm can be used for very precise cutting or boring of a wide variety of metals. The report aims at estimating the market size and future growth of the electron beam machining industry based on offering, process, application, vertical, and region.
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. Electron beam machining market size, share, and industry. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. The accelerating voltage the beam current pulse duration energy per pulse power per pulse lens current spot size power density 16. The process is different from electric discharge, electron beam, laser.
In the electron beam machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece. Also, we identified process parameters for the optimization of the electron beam machining process. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. Today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. We evaluated the defoaming process for removing pores from the sheets, distribution, processability and hole shape all based on the type of metal powder, and thermal characteristics based on the type of silicon. 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. Ionbeam machining or etching is generally a surface finishing process in which the material removal takes place by sputtering of ions.
When this high velocity electron strikes the workpiece, it melts and vaporizes the material from the workpiece. 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. Mar 30, 2017 today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Introduction laser beam machining lbm is a novel thermal energy based advanced. In a vacuum chamber, a beam of highvelocity electrons is focused on a workpiece. The values of process parameters are determined to yield the desired product quality and also to maximize the process performances. Using todays cad modeling capabilities, ebam ebfff deposits feedstock material in an additive layering process to produce near. Dec 07, 2016 electron beam machining is a kind of machining process by using highvelocity electron beam. How vacuum is created ebm process parameters ebm process capability advantages disadvantages.
This will generate high heat energy and melts and vaporize metal from work piece. In this process, a laser beam is focused for melting and vaporizing to. In an electron beam machining, the electrons strike the. The construction and working principle of the electron beam gun would be discussed in the next section. Abstract electron beam is generated in an electron beam gun. Parametric analysis of cutting parameters for laser beam. Electron beam machining read a free technical essay at. Electron beam machining is process in which high velocity electrons are concentrated in a narrow beam and then directed towards the workpiece for machining. Nov 26, 2018 19 points you must know about electron beam machining process ntm methods. Us5534677a electron beam machining using rotating and. Electronbeam machining is a kind of machining process by using highvelocity electron beam. Mechanical engineering assignment help, electron beam weldingebw effect of process parameters, effect of process parameters high voltage gives high velocities in the electron beams. The mutual repulsion effects in the constituent electrons will be less marked at high velocities than at low velocities. The ebm technique is used for cutting fine holes and slots in any material.
For questions and queries whatsapp 9766597308 gmail pnk. One commonality of these electron beam welders is that all beam parameters and all mechanical axes are numerically controlled either by a plc or a cnc. Electron beam irradiation processing is commonly used in the sterilization of medical devices, contamination control, as well as the modification of materials such as, heat shrink tubing and wire and cable insulation. 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. The ebf3 process introduces metal wire feedstock into a molten pool that is created and sustained using a focused electron beam in a vacuum environment 1x104 torr or lower.
Laser beam machining electron beam machining ion beam machining tool machining ultrasonic machining. Pdf effect of lbm and largearea ebm finishing on micro. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. Electron beam additive manufacturing ebam and electron beam free form fabrication ebfff are processes that utilize proven eb welding technology to create metallic parts using a cost effective approach. View electron beam machining process ppts online, safely and virus free. Operation in a vacuum ensures a clean process environment and eliminates the need for a consumable shield gas. The systemic models for the electronsmaterial interaction allow. 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 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 ebm is a thermal machining process in which highvelocity electrons concentrated into a narrow beam are used for instantly heating, melting, or vaporizing the.
In laser beam machining, a laser beam is focussed onto the targetworkpiece sur face figure 11. Electron beam machining is a kind of machining process by using highvelocity electron beam. In ebm, electrons are accelerated to high velocity as half of the light speed, then it is impinged to. This process is used in many applications, including drilling, cutting, annealing, and welding. In lbm, there are many factors such as beam parameters. 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. As the process requires the electron beam to heat up the powder above the melting point, the contouring process could be viewed as a heat transfer process as well. In ebm, electrons are accelerated to high velocity as. Evaporation model for beam based additive manufacturing. As with any modern machine tool, all process parameters can be stored by their respective part numbers and retrieved at a later date. Ion beam machining or etching is generally a surface finishing process in which the material removal takes place by sputtering of ions. Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work. Control parameters optimization of laser beam machining.
Depending upon the intensity of heating the workpiece can melt and vaporize. Electron beam machining as a manufacturing process has made it possible to design and make accurate complex shaped work pieces. Effects of processing parameters on surface roughness of. In this study, melting and vaporisation removal technologies were analysed. Oct 02, 2017 complete description on electron beam machining. An apparatus and method for electron beam eb machining drilling, cutting and welding that uses conventional eb guns, power supplies, and welding machine technology without the need for fast bias pulsing technology. Electron beam melting and refining ebmr in a vacuum using an intense electron beam is a widely used, ecologicallyfriendly method. Control of spacebased electron beam free form fabrication. Laser beam machining main parts, principle, working with. Principles, equipment, operations, applications, advantages and limitation of ebm.
Jan 06, 2015 electron beam process parameters the process parameters, which directly affect the machining characteristics in electron beam machining, are. The main points which will come across various competitive exams of electron beam machining process are highlighted in a bolded text so that you can grab the points easily from the given material presented below. An apparatus and method for electron beam eb machining drilling, cutting and welding that uses conventional eb guns, power supplies, and welding machine technology without the need for fast bias. In the last class, we had discussed about electrical. The variation of the process parameters has a distinct and complex influence on the electron beam machining process products. Laser beam machining is a thermal machining process which uses laser beam to produce heat. It is a nontraditional machining process in which no physical tool is used. Mechanism of material removal in electron beam machining ii. Electron beam machining contents ebm process ebmequipment.
Working, advantages, limitations, applications,laser projects, pdf. View electron beam machining process ppts online, safely and virusfree. Electron beam machining electron cathode free 30day. Apr 21, 2017 electron beam machining ebm invented in germany in 1952 by dr. Electron beam machining ebm diagram, working, advantages. Ebm is a highenergybeam machining process electrical energy is used to generate high. The systemic models for the electronsmaterial interaction allow establishing the main parameters for each application accelerating voltage, focus current, processing speed etc. Electron beam machining is a thermal process used for metal removal during the machining process. View electron beam machining ppts online, safely and virus free. Notes on electron beam machining ebm me mechanical.
Electron beam weldingebw effect of process parameters. Ebm is a highenergy beam machining process electrical energy is used to generate highenergy electrons the mechanism of material removal is primarily by melting and rapid vaporization due to intense heating by the electrons. Electrical discharge machining edm, electron beam machining. A study on the preparation method of vaporized amplification. Mar 17, 2016 electron beam machining ebm is a thermal process.
Ebm is a highenergybeam machining process electrical energy is used to generate highenergy electrons the mechanism of material removal is primarily by melting and rapid vaporization due to intense heating by the electrons. Electrochemical machiningecm, laser beam machininglbm. Noone has more experience or expertise in the application of electron beam welding than electron beam processes. Nov 23, 2018 electrochemical machiningecm, laser beam machininglbm. The report aims at estimating the market size and future growth of the electron. A detailed notes on electron beam machining process, and. Electron beam process parameters the process parameters, which directly affect the machining characteristics in electron beam machining, are. The kinetic energy of the electrons, upon striking the workpiece, changes to heat, which vaporizes. Electron beam welding process, applications and equipment.
In this process, a laser beam of high energy is made to strike on the workpiece, the thermal energy of the laser gets transferred to the surface of the wp workpiece. Lecture notes on college of engineering and technology. The influence of the input parameter in case of electron beam. Electron beam welding is so clever that many people dont appreciate its potential. The results predict that the penetration depth of the electron beam, which is a function of the acceleration voltage. 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. The values of process parameters are determined to yield. The basic functions of any electron beam gun are to generate free electrons at the cathode, accelerate. The electron beam e beam irradiation process uses highenergy electrons for a variety of applications. Electron beam welding experts electron beam processes. A detailed notes on electron beam machining process, and surely helps you. Electron beam melting ebm is one of the latest am techniques using a computercontrolled electron gun to create fully dense 3d objects directly from metal powder. Electron beam melting an overview sciencedirect topics. 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.
Material removal processes machining is the broad term used to describe removal of. The correct selection of the nontraditional machining methods must be based on the following aspects. Control parameters optimization of laser beam machining using. 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. In the last class, we had discussed about electrical discharge machining, ultrasonic machining etc.
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