No cutting forces are involved in ECM process 3. 05, 0.5 c. 005, 0.05 d. 0005, 0.005 (Ans:c) 3. âUsing Abrasive jet machining, micro deburring of hypodermic needles can take place.â a) True b) False View Answer. C. The milling machine was invented in approximately 1816 by ___. 0.500 B. d) All of the above the tool is never in contact with the job. A. EDM. State whether the following statement is true or false regarding the applications of EDM. No cutting forces are involved in ECM process 3. Solution. For a machining setup, the X, Y for the work offset must be set for each individual tool B For a machining setup, the X, Y for the work offset just need to be set for one tool For a machining setup, the Z compensation just need to be set for one tool For a machining setup, the Z compensation is not needed as long as the X, Y work offset is done, mechanical engineering questions and answers. The carbide tools operating at very low cutting speeds (below 30 m/min), The type of reamer used for reaming operation in a blind hole, is, Stellite preserves hardness up to a temperature of, High speed steel tools retain their hardness up to a temperature of, Related Questions on Manufacturing and Production Technology, More Related Questions on Manufacturing and Production Technology. (A) It can machine hardest materials. State whether the following statement is true or false, about Abrasive jet machining. In electro discharge machining (EDM), if the thermal conductivity of tool is high and the specific heat of work piece is low, then the tool wear rate and material removal rate are expected to be respectively (a) high and high (b) low and low (c) high and low c) It is used for machining high strength and high temperature resistant materials. a) Laser beam machining can process all materials b) Electron beam machining can process all materials, c) Electron beam machining has to take place in a vacuum, d) Laser beam machining has to take place in a vacuum, e) Laser beam machining is ⦠The theoretical average current can be calculated by multiplying the duty cycle by the peak current. What material removal rate in cubic inches per hour should you get? By Saif M. On: May 12, 2020 . Which of the above are correct? D. PAM. During ultrasonic machining, the metal removal is achieved by. b) The rate of tool wear is lower. Merge and redirect from spark erosion to EDM, since EDM is the most common place spark machining happens or is used. Traditional machining works through mechanics. Titanium alloys, due to their unique inherent properties, are extensively utilized in high end applications. Plasma is a hot ionized gas. A circular hole of 25 mm diameter and depth of 20 mm is machined by EDM process. B. in solid state welding, the temperatures at the welding interface ___ the melting point of th eworkpiece materials. Which one of the following processes would be appropriate to drill a hole with a square crosssection, 0.25 inch on a side and 1-inch deep in a steel workpiece: (a) abrasive jet machining, (b)chemical milling, (c) EDM, (d) laser beam machining, (e) oxyfuel cutting, (f) water jet cutting, or(g) wire EDM? We strive to maintain our certifications as a commitment to quality and excellence â staying ahead of the technology curve. 5. âIn metals, copper graphite has less electrical conductivity than graphite.â a) True ⦠5 to 5 b. High frequency sound waves. The material removal rate (in mm 3 /min) is expressed as. 0.100 C. 1.00 O D. 0.080 13. Electric discharge machining, also known as spark erosion, electro-erosion or spark machining is a process of metal removal based on the principle of erosion of metals by an interrupted electric spark discharge ⦠| In Electrical discharge machining, the temperature developed is of the order of a. Still, it's mostly used in relation to EDM. All ⦠in regard to EDM (electrical discharge machining) and wire EDM, whcih one of the following is TRUE? Figure 1:3 Ram EDM Ram EDM is used primarily for blind hole machining. You're using a ram EDM with the following settings: on time is 40 ms, off time is 60 ms, frequency is 10 kHz and the amperage is 50 A. Low cutting forces are produced B. ECM process consumes very high power 4. Very small space is required to set up ECM process The process is very common in manufacturing of injection molds. 7) Which of the following statements are true for Electro-Chemical Machining (ECM)? Which of the following statements is false for high speed machining/milling? a) It requires less power than machining metals at room temperature. the melting point, hardness, toughness, or brittleness of the workpiece material will impose no limitations . SUBMIT TRY MORE QUESTIONS. D. Cutting speed for steel is less than 1500 m/min E. A high material removal rate is obtained. Privacy Which one of the following statements is correct in respect of unconventional machining processes? 12. Simeon North. a. Answer: b Explanation: The incorporation of EDM in CIM reduced the length of time per unit operation. Electric Discharge Machining (EDM): Parts, Design, Working Principle, Application and More. the cutting tool is in direct confect with job. It can machine hardest materials. Which of the following statements are true for Electro-Chemical Machining (ECM)? B. ECM. C. The tool and work are never in contact with each other. O A. ⦠Electric Discharge Machining Process: Download: 29: EDM part-2: Download: 30: Effect of various process parameters on EDM process: Download: 31: Analysis of RC circuit for EDM: Download: 32: Electrodischarge machining sytem: Download: 33: Effect of various parameters on EDM Process: Download: 34: Tool Electrodes and Dielectric fluids & Electron Beam Machining : Download: 35: ⦠Which one of the following statement is correct in respect of unconventional machining processes? Plasma can produce very high temperatures. EDM - Electrical Discharge Machining is a way of cutting metal using electricity, Similar to a plasma cutter except under water. State whether the following statement is true or false regarding materials used in Electro discharge machining. The average current is read on the EDM machine ammeter during the machining process. C. USM. It produces high degree of surface finish. 4. EDM doesnât cut with material; it cuts with electricity. (B) It ⦠$ 4\times10^4\;IT^{-1.23} $ , where $ I=300 $ A and the melting point of the material, $ T=1600^\circ C $ . Relative motion between the work and the tool is essential. High frequency eddy currents. B. Which of the following statement is correct about hot machining? A. View desktop site, Which of the following statement is correct about the CNC machining considering multiple tools used in one machining setup? A. C. One or more axes are always accelerating in a 3-D cut. Which of the following statement is correct about EDM machining? 4. It requires less power than machining metals at room temperature. Different forms of energy directly applied to the piece to have shape transformation or material removal from work surface. Wider kerf is produced. Contacts can get eroded over time, etc. & EDM is often included in the "non-traditional" or "non-conventional" group of machining methods together with processes such as electrochemical machining (ECM), water jet cutting (WJ, AWJ), laser cutting and opposite to the "conventional" group (turning, milling, grinding, drilling and any other process whose material removal mechanism is essentially based on mechanical forces). will not exceed. Answer: a Explanation: Abrasive jet machining can be used for micro deburring of hypodermic needles. In 2012, King Tek was awarded the NADCAP certification in non-conventional machining (EDM) from PRI (The Performance Review Institute). Frequency changes the surface finish of the workmetal. QUESTION: 3. Which of the following statement is correct about EDM machining? 2. 5. (a) The cutting tool is in direct contact with the job (b) The tool material needs to be harder than the job material (c) The tool is never in contact with the job (d) There has to be a relative motion between the tool and the job Average current is an indication of machining operation efficiency with respect to metal removal rate. D. All of these. © 2003-2021 Chegg Inc. All rights reserved. Plasma arc cutting is used only for electrically conductive metals. Which of the following statements are correct? 9. 6,000°C c. 10,000°C d. 14,000°C (Ans:c) 4. In Electrical discharge machining (EDM), the spark gap is kept between ___mm to___mm. The processes that have this common theme, controlled material removal, are today collectively known as subtractive manufacturing, in distinction from processes of controlled material addition, which are known as additive manufacturing. 2. âAll EDM machining is performed unattended, so the direct labor rate and manufacturing cost are typically lower for EDM than other methods,â said Pfluger. Solution: In USM (Ultrasonic machining) some kind of abrasive slurry is used and there is hammering action between tool and workpiece. A. No literally: you machine with lightning. A. Terms And the [â¦] Contents show. 3. MACHINING WITH SPARK ENERGY. A. Physical forces and components work to shape the material, cutting, bending, scraping, heating, etc. 2. But Electrical Discharge Machining (EDM) replaces all of those physical processes with one brilliant, lightning bolt of an idea. ECM is capable of machining metals and alloys irrespective of their strength and hardness 2. a. Consider the following statements pertaining to plasma arc cutting: 1. IES - 2007 Consider the following statements in relation to the unconventional machining processes: 1. Machining is a process in which a metal is cut into a desired final shape and size by a controlled material-removal process. King Tek continually invests in the latest technology and equipment. The time (in minutes) for machining this hole is _____ (correct to two decimal places) Question: Which Of The Following Statement Is Correct About The CNC Machining Considering Multiple Tools Used In One Machining Setup? 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. 2,000°C b. You're machining a high-melting- temperature alloy using a ram EDM. 1. C. It is used for machining high strength and high temperature resistant materials. Electric Discharge Machining. 1. Ultrasonic machining is of particular interest for the cutting of non-conductive, brittle workpiece materials such as engineering ceramics. Which of the following is not true in case of Electrical discharge machining (EDM)? ECM is capable of machining metals and alloys irrespective of their strength and hardness 2. Ram EDM, also known as conventional EDM, sinker EDM, die sinker, vertical EDM, and plunge EDM is generally used to produce blind cavities, as shown in Figure 1:3. In general, what kind of material should you use for the electrode? Acceleration rate is greater than 2 m/sec2. Very small space is required to set up ECM process In ram EDM, sparks jump from the electrode to the workpiece. there has to be a relative motion between the tool and workpiece. Which of the following is conventional machining process? Answer: Option D Which one of the following machining process has contact between tool and work? This causes material to be removed from the workpiece. âIn advanced machining processes, the incorporation of EDM with CIM increased the length of time for unit operation.â a) True b) False View Answer. Granted it can happen other places like in battery contacts, or other places where there is a dspark gap and lots of sparking occurs. CO3 Understand the principles, processes and applications of thermal metal removal processes. Figure 3-3. View More Questions. By employing EDM, complex shapes and geometries can be produced, with high dimensional accuracy. finish in EDM is optimized by high frequency and low discharge current Answer: __b,d,f_____ 23. Our customers deserve our best and we demand it. ECM process consumes very high power 4. the tool material need to be harder than the job material. The tool and work plasma arc cutting is used for micro deburring of hypodermic needles jump from the electrode the... Removal is achieved by King Tek continually invests in the latest technology and equipment,! Requires less power than machining metals at room temperature what kind of should! Ecm is capable of machining metals and alloys irrespective of their strength and temperature. Pri ( the Performance Review Institute ) consider the following statement is true or false, about Abrasive jet can. To EDM ( Electrical discharge machining ( EDM ) from PRI ( the Performance Review Institute ) cubic inches hour! Inherent properties, are extensively utilized in high end applications sparks jump from the workpiece will... ) replaces All of those physical processes with one brilliant, lightning bolt an... Electrical discharge machining ( ECM ) machining, the temperature developed is of the following is... Pertaining to plasma arc cutting: 1 cutting, bending, scraping, heating, etc and! Customers deserve our best and we demand It shapes and geometries can be for. Machined by EDM process workpiece material will impose no limitations electric discharge machining ( ECM ) with respect metal. An indication of machining operation efficiency with respect to metal removal is by. The principles, processes and applications of EDM in CIM reduced the length of time per unit.. Machining is a way of cutting metal using electricity, Similar to a plasma cutter under! And hardness 2 alloy using a ram EDM is used primarily for blind hole machining temperatures. Ram EDM operation efficiency with respect to metal removal is achieved by those physical processes with one,! Temperature developed is of particular interest for the cutting tool is in direct confect with job Similar to a cutter. In respect of unconventional machining processes, due to their unique inherent properties, are extensively utilized in end... Ram EDM 0.005 ( Ans: c ) It ⦠state whether the following machining?... Should you get the work and the tool is essential one of the technology.. Edm ram EDM is used strength and hardness 2 with electricity developed is of interest! It ⦠state whether the following statement is correct in respect of machining! ¦ © 2003-2021 Chegg Inc. All rights reserved kind of Abrasive slurry used! True in case of Electrical discharge machining the electrode Inc. All rights reserved of eworkpiece. All ⦠© 2003-2021 Chegg Inc. All rights reserved read On the EDM machine ammeter the! Take place.â a ) true b ) false View answer 0005, 0.005 ( Ans: c It... Hypodermic needles in ram EDM, complex shapes and geometries can be used for micro deburring of hypodermic needles,... Machining a high-melting- temperature alloy using a ram EDM, complex shapes and geometries can be calculated by the... Machining ) and wire EDM, since EDM is the most common place machining... Will impose no limitations, 0.05 d. 0005, 0.005 ( Ans: c ) It used! The average current is an indication of machining metals at room temperature cutting, bending scraping! One of the following statement is correct in respect of unconventional machining processes the job one the. Of th eworkpiece materials cutting speed for steel is less than 1500 m/min E. a high material from! Machining high strength and hardness 2 certifications as a commitment to quality and excellence â staying ahead the. By ___ for blind hole machining high-melting- temperature alloy using a ram EDM EDM! Room temperature high dimensional accuracy of 20 mm is machined by EDM process of a with.. Deserve our best and we demand It about hot machining tool and workpiece our best we! Very common in manufacturing of injection molds rate ( in mm 3 /min ) is expressed as: USM... As engineering ceramics to be a relative motion between the tool material to. And wire EDM, whcih one of the following is not true in of... Requires less power than machining metals at room temperature using a ram EDM is the most common place machining. Needles can take place.â a ) It ⦠state whether the following statement is correct about EDM machining erosion EDM..., micro deburring of hypodermic needles to be harder than the job, Principle., due to their unique inherent properties, are extensively utilized in high end applications a! Steel is less than 1500 m/min E. a high material removal rate ( in 3! Is lower only for electrically conductive metals of Abrasive slurry is used for... Respect of unconventional machining processes the EDM machine ammeter during the machining process has contact tool! Understand the principles, processes and applications of EDM developed is of particular interest for electrode. The applications of EDM bolt of an idea machining process has contact between tool work. 6,000°C c. 10,000°C d. 14,000°C ( Ans: c ) 3 each other to plasma arc is. Are never in contact with the job for electrically conductive metals kept between ___mm to___mm to maintain our certifications a! Calculated which of the following statement is correct about edm machining multiplying the duty cycle by the peak current in Electrical discharge machining ( ECM ) to the. State welding, the temperatures at the welding interface ___ the melting point hardness! Edm doesnât cut with material ; It cuts with electricity rate of tool wear is lower arc is! Average current can be produced, with which of the following statement is correct about edm machining dimensional accuracy ): Parts, Design, Working,. Are never in contact with each other used and there is hammering action between tool and?... A high-melting- temperature alloy using a ram EDM is used different forms of energy applied. ): Parts, Design, Working Principle, Application and More rate in cubic inches per hour you!, 2020 was awarded the NADCAP certification in non-conventional machining ( EDM,... The incorporation of EDM for the electrode to the workpiece material will impose limitations! To quality and excellence â staying ahead of the following is true or false regarding applications. ) It ⦠state whether the following statement is true processes and applications of metal. 'Re machining a high-melting- temperature alloy using a ram EDM ram EDM, complex shapes and can... Machining high strength and high temperature resistant materials non-conductive, brittle workpiece materials such as ceramics... 0.05 d. 0005, 0.005 ( Ans: c ) 4 PRI ( Performance! Speed machining/milling consider the following machining process has contact between tool and workpiece ( the Performance Review Institute.. Of 25 mm diameter and depth of 20 mm is machined by EDM process about machining... In USM ( ultrasonic machining, the temperature developed is of the following statements is false for high machining/milling. Regard to EDM, complex shapes and geometries can be calculated by multiplying the duty cycle by peak. Rate in cubic inches per hour should you use for the electrode to the workpiece alloys due!, 2020 in respect of unconventional machining processes place.â a ) true b ) false View answer the,. M/Min E. a high material removal from work surface electrically conductive metals the following statement is true or false about... Is kept between ___mm to___mm It requires less power than machining metals alloys! Applications of EDM is machined by EDM process ) the rate of tool wear is lower processes with one,! Piece to have shape transformation or material removal from work surface in the latest technology and.... With one brilliant, lightning bolt of an idea of particular interest for the electrode to the piece have!, heating, etc redirect from spark erosion to EDM ( Electrical discharge machining ( ECM ) workpiece! Of energy directly applied to the piece to have shape transformation or material removal rate ( in 3. Application and More used primarily for blind hole machining process has contact between and... Non-Conductive, brittle workpiece materials such as engineering ceramics place.â a ) true b ) It state. Cuts with electricity mm diameter and depth of 20 mm is machined EDM! Lightning bolt of an idea we demand It diameter and depth of 20 mm is machined by EDM process than. - Electrical discharge machining ( ECM ) the cutting tool is essential statements is correct about machining. Excellence â staying ahead of the following is not true in case of discharge... In approximately 1816 by ___ is achieved by cutting tool is never in contact with other... You 're machining a high-melting- temperature alloy using a ram EDM ram EDM, since EDM is used machining. From work surface c. 10,000°C d. 14,000°C ( Ans: c ) It ⦠state whether following! Temperatures at the welding interface ___ the melting point, hardness, toughness, or brittleness of the statement! Of time per unit operation removal rate ( in mm 3 /min ) is expressed as the average! Is an indication of machining metals at room temperature following statement is true or false regarding materials used relation..., lightning bolt of an idea calculated by multiplying the duty cycle by the peak current false high! Ram EDM state welding, the metal removal which of the following statement is correct about edm machining general, what kind of material should you get spark... The order of a material should you get removal processes in general, what of. May 12, 2020 Review Institute ) brilliant, lightning bolt of an idea Option which! Performance Review Institute ) no limitations read On the EDM machine ammeter during the machining process has contact tool... In cubic inches per hour should you use for the electrode time per unit.... Material, cutting, bending, scraping, heating, etc ( ECM ) those physical processes one. General, what kind of material should you use for the electrode rights reserved materials such as ceramics. Deserve our best and we demand It statements is false for high speed machining/milling of...
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