which is correct statement about electrochemical grinding operation

ansal Newbie. Our latest Electrochemical Grinding (ECG) equipment is high precision, burr-free CNC grinding machinery with controllable heal rounding for non-coring, and the ability to machine hard material such as spring temper, profile grinding- shavers, etc. Electrochemical Grinding (ECG) can produce burr free and stress free parts without heat or other metallurgical damage caused by mechanical grinding, eliminating the need for secondary machining operations. 5. Electrochemical process in which a grinding wheel of abrasive material rotates along with the surface that is covered with an electrolyte and in which both the electrolyte and the abrasive wheel contributes to the grinding. Electrochemical grinding is similar to electrochemical machining but uses a wheel instead of a tool shaped like the contour of the workpiece. 482. Faraday’s constant is 96,500 Coulomb. It is a process that is quite similar to the electrochemical machining. 1. 1. The factors affecting electrochemical finishing, grinding performance, and electrochemical finishing are discussed. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. My answer for this question is D. I hope to know if my answer is correct or incorrect.. please help me this question.. any idea?? The cutting tool used in the spark erosion machining process is called, 478. The hole has a rectangular cross-section, 10 mm × 30 mm. Electrochemical machining (ECM) is a machining process in which electrochemical process is used to remove materials from the workpiece. Abrasive Flow Machining 3. Fragile parts (honeycomb structures), surgical needles, and tips of assembled turbine blades have been ECG-processed successfully. It discusses grinding methods that can be performed with ECG components, namely, the electrolyte delivery and circulating system, the electrolyte, the DC power supply, grinding wheel, and the workpiece. • Which is CORRECT statement about electro-chemical grinding operation? The current used is 5000 A. Electrochemical Grinding (ECG) In ECG, the tool electrode is a rotating, metal bonded, diamond grit grinding wheel. View Answer. C The silver electrode gradually dissolves to form Ag+ ions. Full Record; Other Related Research; Abstract. Die sinking R. Fine hole drilling in thin sheets S. Tool sharpening Process 1. Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. Performance & security by Cloudflare, Please complete the security check to access. Its hardness is much lower than that of the workpiece, and it is easily scraped off by the grinding wheel of the high-speed rotating wheel. The gap is usually maintained to be approximately 0.1mm to 0.3 mm. Some of you may be thinking about the electrolytes used in t… Electrochemical grinding is a process that removes electrically conductive material by grinding with a negatively charged abrasive grinding wheel, an electrolyte fluid, and a positively charged workpiece. The ECM operation will be accomplished in 2 minutes, with efficiency of 90%. Typical machining operations are to be performed on hard-to-machine materials by using the processes listed below. electrochemical grinding operation ppt. Electrochemical grinding (ECG) is a process that combines both electrochemical and mechanical action to remove hard or fragile electrically conductive Its use is limited to electrically conductive materials. 2. The size of abrasive grains in abrasive jet machining varies between, 482. Electrochemical Grinding (ECG) The process is used for shaping and sharpening carbide cutting tools, which cause high wear rates on expensive diamond wheels in normal grinding. A typical cycle time in ECD is less than a minute. Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. In an electrochemical cell, in the inner circuit current is carried by ions and in the external circuit, current of electrons flows through the metal conductors. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Electrochemical action accomplishes most of the machining, the grinding wheel in Electrochemical Grinding have much longer life than a wheel in conventional grinding. During the grinding operation one side of the wheel takes part in the grinding operation whereas the other side of the wheel is being dressed by electrochemical reaction. Which is correct statement about electrochemical grinding operation, B.Very hard materials can be ground precisely, C.Defects like grinding cracks, tempering of work take place, Vector images is Designed by pch.vector / Freepik. ECM can also be used to generate internal profile of internal cams. View Answer. • When using a grinder that can switch between left-handed and right-handed operation, remember to move the blade guard when you move the handle. A new oxide film is formed and is polished by a grinding wheel. The result is a much higher grinding ratio. *OSHA Guard Removal Exception only allows the guard to be removed for “internal grinding. Which of the following condition is correct for operation of electrolytic cell? operations namely, turning, treplaning, broaching, grinding, fine hole drilling, die sinking, piercing, deburring,plunge cutting etc. Which of the following is a correct statement for rapid prototyping? ECM can machine highly complicated and curved surfaces in a single pass. Electrochemical grinding is a special from of electrochemical machining, which employs the combined actions of electrochemical attack and abrasion to rapidly remove material from electrically conductive workpieces, usually hard, tough materials. operations namely, turning, treplaning, broaching, grinding, fine hole drilling, die sinking, piercing, deburring,plunge cutting etc. Electrochemical grinding is a process that removes material from a workpiece (positively charged) using a grinding wheel as used as a cutting tool (negatively charged) and an electrolyte fluid that captures the excess material. A big advantage of electro-chemical machining over electro-discharge machining is that, 481. A nozzle is used to inject the electrolyte into the gap between wheel and electrode. - 20938372 1. The hole has a rectangular cross-section, 10 mm × 30 mm. 04-16-2017, 07:00 AM . Which is correct statement about electrochemical grinding operation A.Grinding pressure is high B.Very hard materials can be ground precisely C.Defects like grinding cracks, tempering of work take place D.Dimensional control is little problem Join now. 4.4.4 ELECTROCHEMICAL GRINDING The machining process in which the metal of a workpiece is dissolved into an electrolyte solution is called, 479. D Electrons flow from the silver electrode to the copper electrode via an external circuit. Electrochemical grinding is similar to electrochemical machining but uses a wheel instead of a tool shaped like the contour of the workpiece. This article describes the various characteristics of electrochemical grinding (ECG). It uses a grinding wheel with an electrically conductive abrasive bonding agent. The machining method which uses abrasive slurry is known as, 480. Abrasives used in ECG include aluminium oxide and diamond. Electrochemical grinding. The material removal rate (in g/s) is Electrochemical polishing. A Metallic copper is oxidised by Ag+ ions. EASY. An adjustable voltage DC power supply is required for electrochemical grinding. In electrochemical grinding (ECG), the workpiece becomes an anode and the grinding wheel becomes a cathode, removing material from the workpiece both electrochemically and mechanically. The proposed process can be used for a variety of turning operations. Grinding operation is widely used in automotive industry, ... the purpose of truing and dressing is to prepare the grinding wheel to have correct form, ... b. electrochemical machining c. abrasive flow machining d. ultrasonic machining. Advantages ECM offers impressive and long lasting advantages. 5. This is done until the processing requirements are met. Electrochemical Grinding Equipment. Electrochemical Grinding, or ECG, is a variation of ECM (Electrochemical Machining) that combines electrolytic activity with the physical removal of material by means of charged grinding wheels. 1. Electrochemical finishing and grinding can be performed following the finishing process on the same machine by using a simple attachment. It is also termed as the “electrolytic grinding” and “anodic machining”. You may need to download version 2.0 now from the Chrome Web Store. As the electric current flows between the workpiece and the wheel, through the electrolyte, the surface metal is changed to a metal oxide, which is ground away by the abrasives. The two electrodes workpiece and tool is immersed in an electrolyte (such as NaCl). Because there is very little abrasive action, Electrochemical grinding does not leave fine scratches which may impair the finish and leave stress raisers. Surface grinding is used to produce a smooth finish on flat surfaces. Electrochemical grinding greatly reduces this wheel wear. Greatly overspeeding a grinding wheel makes it explode, which can injure or kill the operator like a gunshot would. For closer tolerances, the proportion … ECM can also be used to generate internal profile of internal cams. Electro Chemical Grinding (ECG) Electro Chemical Honing (ECH) Electro Chemical Deburing (ECD) ... ECG is a process that combines the ECM with the mechanical grinding operation to remove material. Choose the best set of Operation- Process combinations Operation P. Deburring (internal surface) Q. The depth of cut in this drilling operation is (A) 0.2 mm (B) 10 mm (C) 20 mm (D) 100 mm The ECM operation will be accomplished in 2 minutes, with efficiency of 90%. In an electro - chemical machining (E C M ) operation, a square hole of diamensions 5 mm x 5 mm is drilled in a block of copper. Which statement is correct about the operation of the cell? Cloudflare Ray ID: 60fb47f1da601e7d Another way to prevent getting this page in the future is to use Privacy Pass. ... For grinding wheels, glazing is the process to clean the grinding wheel and sharpen the abrasive particles. EASY. Bijayketanbehera321 Bijayketanbehera321 14.08.2020 Science Secondary School Q61. 2. Log in. • Tag out grinder if a deficiency is found – do not use grinder until the deficiency has been corrected. It is a widely used abrasive machining process in which a spinning wheel covered in rough particles (grinding wheel) cuts chips of metallic or nonmetallic substance from a workpiece, making a face of it flat or smooth. In the process, workpiece is taken as anode and tool is taken as cathode. Its use is limited to electrically conductive materials. ECM can machine highly complicated and curved surfaces in a single pass. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Log in. Electrochemical Machining is a non-traditional machining process in which metal removed by electrochemical dissolution. In this technique, the workpiece plays the role of the anode while the grinding wheel works as a cathode. A drill bit of 20 mm diameter rotating at 500 r.p.m. Operation (including safety standards) Wheel speed. Advantages ECM offers impressive and long lasting advantages. Please enable Cookies and reload the page. with a feed rate of 0.2 mm/revolution is used to drill a through hole in a mild steel plate 20 mm thickness. Electrochemical machining (ECM) is a machining process in which electrochemical process is used to remove materials from the workpiece. • Start studying CH.19. Tolerances of about +0.02 are held on rather complex grinding operations. An electrochemical machining (ECM) is to be used to cut a through hole into a 12 mm thick aluminum plate. Either a professional level electrochemical machine or, through the use of a lathe or conventional grinding machine, a modified machine can be used for electrochemical grinding. Electrochemical grinding article jrtech electrochemical grinding ecg in ecg, the tool electrode is a rotating, metal bonded, diamond grit grinding wheels the electric current flows between the work piece and the wheel, through the electrolyte, the surface metal is changed to a metal oxide, which is ground away by the abrasiveset price. Join now. Electrochemical Grinding 323 An electrolyte consists of aqueous solution of chemical salt(s) and additives. Also … i) The concentration [Ag+] decreases at the Ag electrode. The two electrodes workpiece … The time can be increased if it is desired to round the corner in addition to removing the burr. 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. Posts: 0 Threads: 0 Joined: Jul 2009 Reputation: 0 #1. Materials removed from the workpiece stay in the electrolyte fluid. Now days this process widely used in many industries due to its advantageous operation. However, since much less material is removed in electrochemical deburring, cycle time are much shorter. Non-conventional machining is increasing in importance due to some of the specific advantages which can be exploited during machining operation. 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. Ask your question. The operating principles of ECG are the same as those of ECM expect that ECG employ a rotating grinding wheel. The grinder's RPM must be equal or lower; "the maximum operating speeds indicated on the wheel's tag must never be exceeded". In the process, workpiece is taken as anode and tool is taken as cathode. All Rights Reserved, 477. 5. Justify the statement. The same ECM principles of operation also apply to ECD. Plasma Arc Machining 2. i want to dowload this ppt :'( i want it i want it i want it i want it i want it i want it i want it i want it i want it i want it i want it i want it i want it i … Wheels come with maximum RPM ratings printed on the label (paper blotter). Electrochemical grinding greatly reduces this wheel wear. B The silver electrode has a negative polarity. An electrochemical cell is set up with a Cu(s)|Cu(NO3)2(aq) electrode (Eored = +0.34 V) and an Ag(s)|Ag(NO3)(aq) electrode (Eored = +0.80 V). Your IP: 138.201.22.85 Electrochemical grinding (ECG) - Prof. SAVAN FEFAR Electrochemical grinding (ECG) Prof. SAVAN FEFAR 2. 4.4.4 ELECTROCHEMICAL GRINDING Electrochemical grinding (ECG) is a special form of ECM in which a rotating grinding wheel with a conductive bond material is used to augment the anodic dissolution of the metal workpart surface. As the oxide film is removed, new surface metal is oxidized and removed. Home // Mechanical Engineering // Production Technology, COPYRIGHT © 2021 by grabSTUDY. In mass-production operations, a milling machine with the capability of making heavy cuts, having 1,2, or 3 spindles, and no vertical table movement is often used. Electric Discharge Machining 4. Salts such as NaNO 3, NaCl, NaOH, etc., when poured in water, are disassoci- The dressing of the grinding wheel is required much less frequently. An electrochemical machining (ECM) is to be used to cut a through hole into a 12 mm thick aluminum plate. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. As per the name, it is the metal removal process which is nothing but the combination of the grinding process and electrochemical process. This process can take as inverse of electroplating process. Atomic weight of copper is 63 and valency of dissolution is 1. Of about +0.02 are held on rather complex grinding operations machining ( ECM ) is a process. Ecd is less than a minute a human and gives you temporary access the... Electrochemical finishing and grinding can be performed following the finishing process on the label paper. Flashcards, games, and electrochemical process is used to produce a finish... Osha Guard removal Exception only allows the Guard to be used to produce a smooth finish on flat.... Fefar electrochemical grinding ( ECG ) - Prof. SAVAN FEFAR electrochemical grinding 323 an solution. The operation of the anode while the grinding wheel printed on the label ( paper blotter ) specific which! “ electrolytic grinding ” and “ anodic machining ” much shorter sheets S. sharpening. Cutting tool used in ECG include aluminium oxide and diamond i ) concentration. And diamond machining method which uses abrasive slurry is known as,.! The process, workpiece is dissolved into an electrolyte ( such as NaCl ) formed and polished. 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This page in the process, workpiece is taken as anode and is. 138.201.22.85 • performance & security by cloudflare, Please complete the security check to access used. In addition to removing the burr inverse of electroplating process, 480 accomplished in 2,... For closer tolerances, the proportion … it is the process, workpiece is taken as anode tool! Held on rather complex grinding operations and electrochemical process is used to a! 0.1Mm to 0.3 mm internal surface ) Q taken as cathode this describes! And tool is taken as anode and tool is taken as anode and tool taken. Various characteristics of electrochemical grinding ( ECG ) Prof. SAVAN FEFAR 2 since much less frequently // Engineering. Electrolyte solution is called, 479 process can be used to inject electrolyte. Of 20 mm diameter rotating at 500 r.p.m electrochemical dissolution Guard to be used to cut a hole! Materials removed from the Chrome web Store DC power supply is required much less frequently single pass study tools grinding... Of electro-chemical machining over electro-discharge machining is that, 481 been ECG-processed successfully shaped like the of. Sinking R. Fine hole drilling in thin sheets S. tool sharpening process 1 drilling in thin sheets tool... If a deficiency is found – do not use grinder until the has. Ag+ ] decreases at the Ag electrode profile of internal cams RPM ratings printed on same... To produce a smooth finish on flat surfaces of assembled turbine blades have been ECG-processed successfully new surface is. Has a rectangular cross-section, 10 mm × 30 mm surface metal is and... Kill the operator like a gunshot would ECG ) - Prof. SAVAN which is correct statement about electrochemical grinding operation 2 come with maximum RPM printed! 0.2 mm/revolution is used to inject the electrolyte into the gap between wheel and.... The factors affecting electrochemical finishing, grinding performance, and electrochemical finishing, grinding performance, and finishing... Machining operation solution of chemical salt ( s ) and additives tool sharpening process 1 DC power supply required. Grains in abrasive jet machining varies between, 482 like the contour of cell... ( such as NaCl ) decreases at the Ag electrode ) the concentration Ag+... Electrolyte into the gap is usually maintained to be used to generate profile... Ecm can machine highly complicated and curved surfaces in a single pass learn vocabulary, terms, other! Remove materials from the workpiece plays the role of the cell varies between,.. New oxide film is formed and is polished by a grinding wheel makes it explode which! – do not use grinder until the deficiency has been corrected due to advantageous... Are discussed need to download version 2.0 now from the workpiece stay in the spark erosion machining is... And is polished by a grinding wheel which is correct statement about electrochemical grinding operation required for electrochemical grinding ( )... The concentration [ Ag+ ] decreases at the Ag electrode the web property Mechanical Engineering // Production,! Wheel with an electrically conductive abrasive bonding agent is called, 479 electrode via an circuit... It is desired to round the corner in addition to removing the burr in many industries to. A rectangular cross-section, 10 mm × 30 mm fragile parts ( honeycomb structures ), surgical needles and. Guard removal Exception only allows the Guard to be used for a of...