Electrical discharge machining edm, electrode, spark, workpiece, gap, conductivity. A power supply controls the electrical discharges and movement. As the electric field is established between the tool and the job, the free electrons on the. Electric discharge machining edm is a manufacturing process that enables the machining of all electrically conductive materials independent of their hardness or strength. Influence of process parameters on electric discharge. Objectives define electrical discharge machining and state its principle. The first part of this presentation provides a brief educational overview of the electrical. The concept of erosive effect of electrical discharge or sparks was.
Electric discharge machining is a controlled metal removal process that is used to remove metal by means of electric spark erosion. Thus, mirrors with various contours, such as a curved or free. Mustafizur rahman department of mechanical engineering national university of singapore singapore 119576 introduction background electrical discharge machining electrical discharge machining is an effective noncontact machining. Find powerpoint presentations and slides using the power of, find free presentations research about electrical discharge machining ppt. A power supply controls the electrical discharges and movement of the electrode in relation to the workpiece. The individual parameters influence the machining process individually in edm optimization is required for the parameters, in order to get desired machining. Electrical discharge machining edm is one of the earliest nontraditional machining processes. It is also known as spark erosion, electroerosion or spark machining. With the development of highprecision technology, more and more highstrength, highhardness, and hightemperature materials are needed. The tool electrode usually acts as a cathode and is immersed in a. A widely used nontraditional machining process that removes metal through the repeated sparking of an electrical current. Electrical discharge machining used on hard metals works with electrically conductive materials 3.
Electrical discharge machining edm wire edm 3 mitsubishi mv4800r 5axis wire edm. The process is based on the erosive effect of electrical. Advanced machining processes and nanofabrication chapter 26 introduction chemical machining electro chemical machining electrical discharge machining. Process is burrfree thin, fragile sections easily machined without deforming. Edm circuits circuit design for electrical discharge. The manual is for use by students learning electrical discharge machining edm. Electric discharge machining powerpoint ppt presentation. Electric discharge machining edm linkedin slideshare. Electric discharge machining edm ppt download in wire electrical discharge machining wedm, also known as wirecut edm and wire cutting, a thin singlestrand metal wire, usually brass, is fed through the workpiece, submerged in a tank of dielectric fluid, typically deionized water. History of edm in1770s, discovered by joseph priestly. Introduction most extensively used nonconventional material removal process. Contouring of polished singlecrystal silicon plates by.
In diesinking edm systems, the electrode cutting tool and workpiece are held by the machine tool. Each element of the agiecharmilles cut 3000 s has been. Electric discharge an overview sciencedirect topics. Download this electrical discharge machining photo now. Electric discharge machining an overview sciencedirect. Electrical discharge drilling of metal matrix composites. The individual parameters influence the machining process individually in edm optimization is required for the parameters, in order to get desired machining process. Electrical discharge machining ppt video online download. It consists of eight units divided into several lessons, each. Electrical discharge machining stock photo download. Global electrical discharge cutting machine market research report 2017 this report provided by 24 market reports is about, electrical discharge cutting machine report by material, application, and geography global forecast to 2021 is a professional and indepth research report on the worlds major regional market conditions, focusing on the main regions north america, europe and asia. Hence, dielectric fluid should provide an oxygen free machining environment.
Influence of process parameters on electric discharge machining of wc30%co composites d kanagarajan, r karthikeyan, k palanikumar, and p sivaraj proceedings of the institution of mechanical. Electrical discharge machining chemistry materials. Global electrical discharge machining services market 2020. View and download powerpoint presentations on electrical discharge machining ppt. Developed in the mid 1970s in the mid 1980s, the edm techniques were transferred to a machine tool today,it is a viable technique that helped shape. A number of material removal processes such as electrical discharge machining edm, 1 3 electrical ultrasonic machining usm, 4,5 electrochemical machining ecm, 6,7 and laser beam machining lbm 8 10 are developed for better ways of machining. Edm has been replacing drilling, milling, grinding and other.
Electrical discharge an overview sciencedirect topics. A workpiece made of electrically conductive material and a shaped tool are immersed in a dielectric fluid. A multiwire electric discharge machining apparatus capable of suppressing a current flowing from an adjacent cutting wire portion to a discharge point generated in a certain cutting wire portion. Theoretical models of the electrical discharge machining. Electrical discharge machining linkedin slideshare. Electrical discharge machining removing metal by spark erosion. What is electrical discharge machining edm process. Moreover, singlecrystal silicon with a low resistivity can be cut by wire electrical discharge machining wedm.
Electrical discharge machining edm is a nontraditional machining process based on removing material from a part by means of a series of repeated electrical. Russian scientist lazarenko 1 studied the electric discharge for metal cutting application and developed spark erosion machine in 1943. Singlecrystal silicon blocks are easily ground, lapped, and polished to smooth and highaccuracy surfaces. Aimed at the problems of the conventional electrical discharge machining of particlereinforced aluminum matrix composites. Other machining processes theres more than one way to skin a cat, as the old expression goes. Electrical discharge machining machining metals free. The model consist of three differential equationsone each from fluid. Jameson, elman c electrical discharge machining society of manufacturing engineers, machining technology association 2001 texts. Jp205735a multiwire electrical discharge machining. Electrical discharge machiningbased hybrid machining. A free powerpoint ppt presentation displayed as a flash slide show on id. Ppt laser beam machining powerpoint presentation free.
This is the power point presentation ppt on the topic electric discharge machining. A variable mass, cylindrical plasma model vmcpm is developed for sparks created by electrical discharge in a liquid media. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The prevention and control of electrostatic discharge esd. The origin of electrical discharge machining goes back to 1770, when. Electrical discharge machining has the capability of machining difficulttocut materials such as superalloys, advanced ceramics, and composites with complex shapes at both macro and micro. Electric discharge machining edm ppt download in wire electrical discharge machining wedm, also known as wirecut edm and wire cutting, a thin singlestrand metal wire, usually brass, is fed through.
Electrical discharge machining edm powerpoint ppt presentation. The machining precision is the result of a set of technical choices, such as the mechanical concept, the machining process, and wire guidance. Similarly, theres typically more than one way to cut parts. Electric discharge machining edm slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. View electron beam machining process ppts online, safely and virus free. Discharge current effect on machining characteristics and. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Electrical discharge machining wire cutting edmwc is a thermal massreducing process that uses a continuously moving wire to remove material. The prevention and control of electrostatic discharge esd an40005 an.
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