A. Melting and Evaporation. Firstly, a series of MF-EDM experiments on selected magnetic material (SKD11) and selected non … This paper explores the mechanism of wire EDM of MMCs with different sizes of reinforced particles as well as the corresponding unreinforced matrix material. Servo Mechanism is used to provide a constant gap between the gaps. Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. [5] presented that superheating is the dominant mechanism for the material removal in EDM. Aptitude Data Interpretation Verbal Reasoning Non Verbal Reasoning Verbal Ability Programming General Knowledge Puzzle. a) Evaporation b) Fresh dielectric c) Old dielectric d) All of the mentioned Figure 4: Process parameters and performance measures of EDM Process 2. Figure 2 Material removal mechanism in EDM process Important parameters of EDM The important parameters of Electrical discharge machining process are as listed below: a. It is normally used for mass production and is used for working extremely hard materials or materials that are difficult to machine using conventional methods. He was an English physicist. Then the block material was machined by wire-cut EDM. Molecular dynamics simulation of material removal process and mechanism of EDM using a two-temperature model Highlights•This paper achieved a sub-micron MD simulation of discharge process using TTM.•This paper revealed one of material removal mechanisms in EDM.•The formation process of denatured layer in the discharge process was studied.AbstractMolecular dynamics (MD) simulation … Engineering. and mechanism of material removal in EDM. Machining is a term used to describe a variety of material removal processes in which a cutting tool removes unwanted material from a workpiece to produce the desired shape. EDM experiments. Out of all the unconventional machining methods, EDM is the one which gives highest MRR, Melting and evaporation is the mechanism for chip formation, the mechanical properties of work piece material will not affect the material removal rate (MRR). In the present work, an attempt has been made to model material removal rate, electrode wear rate, and surface roughness through response surface methodology in a die sinking EDM process. Accordingly, these regions seem to be playing an important role in the removal phenomena of the molten metal on the EDM process; that is, it is concluded that the molten metal in the crater might be removed in the form of small particles from the workpiece showing the same removal mechanism as the case of mercury electrode. D. Cavitations and Evaporation. Eubank et al. In this research attention is focussed on the analysis … Electrical discharge machining is one of the earliest nontraditional machining, extensively used in industry for processing of parts having unusual profiles with reasonable precision. €e electrical erosion resistance of the surface material is enhanced, and the sidewall wear of the electrode can be e‚ectively reduced, and the shape accuracy of the machined hole can be greatly improved [11]. Physics Questions & Answers for AIEEE,Bank Exams,CAT, Analyst,Bank Clerk,Bank PO : The mechanism of material removal in EDM process is From literature review, Ultrasonic vibration technique is identified as the potential area of work to be pursued further. There exist four basic non-traditional machining processes (EDM, LBM, EBM, and PAM) where thermal energy is utilized to melt and vaporize a tiny volume of material from the workpiece. mechanism of the material removal in micro-EDM, ... Electrical Discharge machining (EDM) is a comparatively new machining method which has several decades of history with efficient work flow. Surface finish produced will be better. Analysis of material removal and surface generation mechanism of ultrasonic vibration–assisted EDM September 2020 International Journal of Advanced Manufacturing Technology 110(1-2) Modelling of Material Removal and Product Quality Material removal in EDM mainly occurs due to intense localised heating almost by point heat source for a rather small time frame. to material removal in form of debris which is continuously being flush off by the dielectric. Electrical discharge machining (EDM) has long been the answer for high accuracy, demanding machining applications where conventional metal removal is difficult or impossible. 3. work piece tool Fig. Explain the purpose of dielectric in EDM process. moval mechanism of G-ECDM is still unclear. Electrical discharge machining is basically a non-conventional material removal process which is widely used to produce dies, punches and moulds, finishing par… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Spark On-time (pulse on time or Ton): The duration of time Two different mechanisms have been proposed to analyze the material removal viz., electro-mechanical analysis for The mechanism of material removal in EDM process is . PROCESS PARAMETERS (CONTD..,) 29 Taper cut & over cut Prevention of Taper Cut Insulated 30. Ans. Electrical Discharge Machining (EDM) consists of a non-conventional machining process, which is widely used in modern industry, and especially in machining hard-to-cut materials. Share this question with your friends. This paper presents a detailed investigation of the material removal mechanisms of sintered NdFeB magnet through analysis of the machining debris and the surface SEM quality. And in this paper,it is mainly aimed at the study of the material removal mechanism. The workpiece is typically cut from a larger piece of stock, which is available in a variety of standard shapes, such as flat sheets, solid bars, hollow tubes, and shaped beams. Sintered NdFeB permanent magnet is widely used in many applications because of its excellent magnet property. In the present study, the material removal mechanism is … Although mechanism of material removal is same in all four processes, the source of heat is different. Lots of methods have been utilized to study this process, but a widely accepted explanation about this process has not been yet accomplished. Gap Voltage ... Material Removal Rate (MRR) Material Removal Mechanism. The paper reports research on EDM relating to improvement in MRR along with some insight into mechanism of material removal. In his Ph.D. thesis, he presented physico-mathematical analysis of the process. : Electro Discharge Machining (EDM) is an electro-thermal non-traditional machining process, where electrical energy is used to generate electrical spark and material removal mainly occurs due to thermal energy of the spark. MECHANISM OF MATERIAL REMOVAL The first serious attempt of providing a physical explanation of the material removal during electric discharge machining is that of Dijck [48]. In EDM machine the material is removed by rapidly recurring (repeating) discharges of current in between the electrodes. B. Melting and Corrosion. material removal coupled with a reduction in tool wear and improved surface quality. Results show that the machinability of Fcc-TiBCN is satisfying. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “EDM-Mechanism of Material Removal – 2”. 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