Laser beam machining is a thermal machining process which uses laser beam to produce heat. In the last class, we had discussed about electrical discharge machining, ultrasonic machining etc. Aug 24, 2016 electrochemical machining ecm seminar with pdf report. Moreover it can machine almost any material irrespective of their mechanical properties. A wide variety of materials can be welded by using laser beam welding. Rapid manufacturing with electron beam melting ebm a.
Mar 28, 2016 process capabilities advantages disadvantages application 3282016 er. This is because of its narrower beam of high energy. May 04, 2017 it can be focused on small areas for welding. Therefore, the heat generated is sufficient to melt and join the workpiece called an electron beam welding operation. Today we will learn about electron beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Plasma arc machining process, diagram, advantages and.
Electron beam machining advantages and disadvantages pdf. 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. Mar 31, 2017 today we will learn about electron beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. The cathode is generally made of tungsten or tantalum. Transmission electron microscopy tem, scanning electron microscopy sem, and focused ion beam fib milling were performed on an irradiated u10mo monolithic fuel to understand its irradiation microstructure. Oct 31, 2017 this video gives the working principle of electron beam machining in two minute for best understand. The power needed to operate the ecm is obviously electrical. 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 electrons hit the workpiece and their kinetic energy turns into thermal energy heating the metal so that sides of the workpiece are joined and a weld can be formed after freezing. Electron beam machining is the process is done by highvelocity electrons developed in the electron gun. Specialist in electron beam welding large and small part capability. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece.
Electrical discharge machining edm, electron beam machining. In the electron beam machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece. Laser beam welding equipment, principle, working with. Capability of making very small holes and slots with high precision, in a short time in any material. The equipment costs high and operator of high skill is required for carrying out operations. Advantages and disadvantages of electron beam machining. In this article you will know about electron beam machining. Laser beam machining is a nonconventional machining method.
At the bottom of the articles you can easily download pdf. A cathode is a hot tungsten filament 2500c emitting high ve potential electrons. 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 is a thermal energybased advanced machining process in which material is removed by focusing the laser beam on the work surface at a constant distance to melt and vaporize the unwanted work material. Ptr is an electron beam welding systems manufacturer and contract welding service provider on the leadingedge of electron beam and vacuum welding technology. As it applies no mechanical cutting force, work holding and fixturing cost is very less.
The major difference between the electron beam melting process and methods such as laser sinteringlaser melting is efficiency of the electron beam gun compared with a laser. Depending upon the intensity of heating the workpiece can melt and vaporize. Ebm can be used for very precise cutting or boring of a wide variety of metals. Electron beam welding process advantages ptrprecision. Water jet machining working principle, advantages and. List the advantages and disadvantages of several of the nontraditional machining techniques.
Electron beam machining advantages and disadvantages pdf 67. Today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Laser beam machining an overview sciencedirect topics. 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 origins of sciakys wirebased ebam process sciaky, inc. Downloadhelper converter registration code keygen 46. Notes on electron beam machining ebm me mechanical. Electron beam machining limitations however, ebm has its own share of limitations. Apr 08, 2017 electron beam machining is process in which high velocity electrons are concentrated in a narrow beam and then directed towards the workpiece for machining. Mar 30, 2017 today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Electron beam machining ebm kcg college of technology. Electron beam machining has been used in industry since the 1960s, initially in nuclear and aerospace welding application. Ebm can be used to cut holes and slots in metal, ceramic, plastic etc.
Electrochemical machiningecm, laser beam machininglbm. Electrochemical machining ecm seminar with pdf report. It is a nontraditional machining process in which no physical tool is used. This article provides a description of equipment used for ebm and discusses the process characteristics, applications, advantages, and disadvantages of electron beam drilling. Electron beam additive manufacturing ebam advantages of.
This process is used in many applications, including drilling, cutting, annealing, and welding. Principle, working, equipments, application, advantages, and disadvantages find, read and cite all the research you need on researchgate. Advantages and disadvantages of using a focused ion beam to. The figure shows the principle of operation of electronbeam machining. No cutting tool pressure or wear occurred in this process. It is used to the machining of highly reactive metals under vacuum. Lecture notes on modern manufacturing process dr pramod.
Further, the beam needs to be manoeuvred if required by the gun. Electronbeam machining ebm is a process where highvelocity electrons concentrated into a. This is the first reported tem work of an irradiated fuel sample prepared using a fib. A beam of electrons is emitted from the electron gun which is a triod consisting of. Electron beam machining ebm applications, advantages and. Lecture notes on college of engineering and technology. Electron beam welding parts, working, applications with pdf.
Today we will learn about electron beam machining principle, working, equipments, application, advantages and disadvantages with its. Electron beam machining ebm introduction electron beam machining is a. Plasma arc machining is a roughing operation to an accuracy of around 1. Here today we are going to study definition, working process, principle, advantages, disadvantages, and application. Electron beam machining advantages and disadvantages pdf 67 download. Electron beam welding ebw is chosen as the method of joining components for several important reasons. Us4080526a electron beam machining apparatus of the dynamic. Electron beam machining can machine metallic as well as nonmetallic workpiece. This article provides a description of equipment used for ebm and discusses the process characteristics, applications, advantages, and disadvantages of electron. Principles, equipment, operations, applications, advantages and limitation of ebm. When this high velocity electron strikes the workpiece, it melts and vaporizes the material from the workpiece. Process capabilities advantages disadvantages application 3282016. 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 welding advantages,disadvantages and. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. Nanopore formation by lowenergy focused electron beam machining. In an electron beam machining, the electrons strike the. 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. Electron beam welding advantages,disadvantages and application introduction to e beam welding. 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 welding process, applications and equipment.
Electron beam machining working principle, advantage ebm. Electron beam welding vs laser welding advantages and. Accuracy on the width of slots and the diameter of holes is ordinarily from 4 mm on 100 to 150 mm thick plates. Electron beam machining is a nonconventional machining process or nontraditional process. Seminar on non conventional machining report download electron beam. Electron beam welding using ebw consists of a highly focused, high speed stream of electrons that bombard the component to be welded. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. Electron beam machining is a thermal process used for metal removal during the machining process. Mar 17, 2016 electron beam machining ebm is a thermal process.
Ebm provides very high drilling rates when small holes with large aspect ratio are to be drilled. Electron beam welding is a welding process utilizing heat generated by a beam of high energy electron. The process was further refined to build jet engine knife edge seals in the 1990s, 10 and, in the early 2000s, the ebam process was developed to help manufacturers save significant time and money on the production of large, highvalue metal parts. It can cut drill holes or cut slots which otherwise cannot be made. 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.
May 20, 2017 water jet machining working principle, advantages and disadvantages with application may 20, 2017 november 18, 2019 pankaj mishra 2 comments machining process, manufacturing processes water jet machining wjm also called water jet cutting, is a nontraditional machining process in which highvelocity jet of water is used to remove. Electron beam machining ebm diagram, working, advantages. Electron beam machining electron cathode free 30day. Electron beam machining ebm uses a focused beam of highvelocity electrons to remove material. Electron beam machining free download as powerpoint presentation. Electron beam machining principles advantages and disadvantages. Nov 23, 2018 electrochemical machiningecm, laser beam machininglbm.
The electron beam technology is several times more energy efficient than laser technology resulting in less power consumption and lower maintenance and manufacturing costs. Introduction and details about electron beam machining. Ultrasonic machining usm applications advantages and disadvantages abrasive jet machining ajm applications advantages and disadvantages ebm limitations. Absence of mechanical contact between work piece and tool. Electron beam machining apparatus of the dynamic seal type, characterized by upper and lower fixed plates for fixedly clamping a workpiece therebetween, which plates define upper and lower vacuum chambers. Define advantage and disadvantage of electron beam machining. 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. It is distortion free machining so precise dimensions can be achieved. Here today we are going to study definition, working process, principle, advantages, disadvantages, and application note. In electron beam machining, if the voltage given to the electron gun is about 60 to 70000 volts, the velocity of electrons produced is reducing, heat generation at the workpiece is reducing. A detailed notes on electron beam machining process, and surely helps you. Jan 11, 2016 electron beam and laser beam welding are very similar processes but with some critical differences that might make a big difference when it comes to which is right for your application.
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