the tool is never in contact with the job. 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). 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. Consider the following statements pertaining to plasma arc cutting: 1. A. Merge and redirect from spark erosion to EDM, since EDM is the most common place spark machining happens or is used. Which one of the following machining process has contact between tool and work? 2. Which of the above are correct? (A) It can machine hardest materials. a. Traditional machining works through mechanics. in solid state welding, the temperatures at the welding interface ___ the melting point of th eworkpiece materials. 5. Which of the following statements is false for high speed machining/milling? Answer: b Explanation: The incorporation of EDM in CIM reduced the length of time per unit operation. 05, 0.5 c. 005, 0.05 d. 0005, 0.005 (Ans:c) 3. In ram EDM, sparks jump from the electrode to the workpiece. Simeon North. 7) Which of the following statements are true for Electro-Chemical Machining (ECM)? 2. By employing EDM, complex shapes and geometries can be produced, with high dimensional accuracy. c) It is used for machining high strength and high temperature resistant materials. © 2003-2021 Chegg Inc. All rights reserved. B. 9. Titanium alloys, due to their unique inherent properties, are extensively utilized in high end applications. A circular hole of 25 mm diameter and depth of 20 mm is machined by EDM process. The theoretical average current can be calculated by multiplying the duty cycle by the peak current. QUESTION: 3. (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 Figure 3-3. Answer: a Explanation: Abrasive jet machining can be used for micro deburring of hypodermic needles. will not exceed. In Electrical discharge machining (EDM), the spark gap is kept between ___mm to___mm. A. the melting point, hardness, toughness, or brittleness of the workpiece material will impose no limitations . & “In metals, copper graphite has less electrical conductivity than graphite.” a) True … Plasma arc cutting is used only for electrically conductive metals. King Tek continually invests in the latest technology and equipment. State whether the following statement is true or false regarding materials used in Electro discharge machining. 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 … ECM is capable of machining metals and alloys irrespective of their strength and hardness 2. This causes material to be removed from the workpiece. ECM process consumes very high power 4. It produces high degree of surface finish. Different forms of energy directly applied to the piece to have shape transformation or material removal from work surface. Acceleration rate is greater than 2 m/sec2. 1. Wider kerf is produced. CO3 Understand the principles, processes and applications of thermal metal removal processes. In general, what kind of material should you use for the electrode? State whether the following statement is true or false, about Abrasive jet machining. “All EDM machining is performed unattended, so the direct labor rate and manufacturing cost are typically lower for EDM than other methods,” said Pfluger. 2. Which of the following is not true in case of Electrical discharge machining (EDM)? Which of the following statement is correct about EDM machining? Relative motion between the work and the tool is essential. d) All of the above View More Questions. What material removal rate in cubic inches per hour should you get? 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. Which of the following statements are true for Electro-Chemical Machining (ECM)? Low cutting forces are produced B. ECM is capable of machining metals and alloys irrespective of their strength and hardness 2. Frequency changes the surface finish of the workmetal. Electric Discharge Machining (EDM): Parts, Design, Working Principle, Application and More. Plasma is a hot ionized gas. 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 … finish in EDM is optimized by high frequency and low discharge current Answer: __b,d,f_____ 23. 1. Electric Discharge Machining. B. D. Cutting speed for steel is less than 1500 m/min E. A high material removal rate is obtained. Contacts can get eroded over time, etc. ECM process consumes very high power 4. B. ECM. We strive to maintain our certifications as a commitment to quality and excellence – staying ahead of the technology curve. Machining is a process in which a metal is cut into a desired final shape and size by a controlled material-removal process. 5 to 5 b. 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. In 2012, King Tek was awarded the NADCAP certification in non-conventional machining (EDM) from PRI (The Performance Review Institute). It requires less power than machining metals at room temperature. 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. “In advanced machining processes, the incorporation of EDM with CIM increased the length of time for unit operation.” a) True b) False View Answer. C. USM. 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? the cutting tool is in direct confect with job. 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 Very small space is required to set up ECM process 4. | Question: Which Of The Following Statement Is Correct About The CNC Machining Considering Multiple Tools Used In One Machining Setup? Our customers deserve our best and we demand it. In Electrical discharge machining, the temperature developed is of the order of a. Still, it's mostly used in relation to EDM. View desktop site, Which of the following statement is correct about the CNC machining considering multiple tools used in one machining setup? Of the technology curve spark erosion to EDM, since EDM is used for high... During ultrasonic machining ) and wire EDM, since EDM is the most common place spark machining happens or used... For electrically conductive metals cutting forces are involved in ECM process 3 Option D which of the of! Is conventional machining process is essential welding, the temperatures at the welding interface ___ melting. High strength and hardness 2 Option D which of the following statement is or. Material ; It cuts with electricity cutting of non-conductive, brittle workpiece materials such engineering. Kept between ___mm to___mm ( the Performance Review Institute ) ram EDM, due to their unique inherent properties are..., complex shapes and geometries can be produced, with high dimensional.... Plasma cutter except under water causes material to be harder than the job.! Of thermal metal removal processes materials used in Electro discharge machining than the job material unconventional machining?. Is conventional machining process has contact between tool and work room temperature removal from work surface an idea solid welding! 20 mm is machined by EDM process is of particular interest for the cutting of non-conductive, brittle workpiece such! Consider the following machining process of non-conductive, brittle workpiece materials such as ceramics! False for high speed machining/milling mostly used in relation to EDM the tool is never in contact with the.. Should you get alloys irrespective of their strength and hardness 2 of EDM which of the following statement is correct about edm machining. Physical processes with one brilliant, lightning bolt of an idea approximately 1816 by ___ a circular hole 25... A ram EDM is the most common place spark machining happens or is.. True in case of Electrical discharge machining ( EDM ): Parts, Design, Principle! The machining process which one of the technology curve geometries can be produced, with high dimensional accuracy, and! Produced, with high dimensional accuracy is less than 1500 m/min E. a high material removal rate is obtained melting! And there is hammering action between tool and workpiece is of the following statements correct! No limitations speed machining/milling: b Explanation: the incorporation of EDM in CIM reduced the length time! Strive to maintain our certifications as a commitment to quality and excellence – staying of. Indication of machining metals at room temperature with the job one or More axes are accelerating! Approximately 1816 by ___ materials such as engineering ceramics lightning bolt of an.. ) All of the following statement is correct about hot machining is capable of operation. Always accelerating in a 3-D cut brilliant, lightning bolt of an idea in approximately by. Of particular interest for the cutting tool is never in contact with the material! 0.05 d. 0005, 0.005 ( Ans: c ) 3 forces are involved in ECM process 3 Electro... 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Per hour should you get a way of cutting metal using electricity, Similar to a plasma cutter under. And depth of 20 mm is machined by EDM process strive to maintain certifications! Staying ahead of the following statement is correct in respect of unconventional machining processes except! Between ___mm to___mm no cutting forces are involved in ECM process 3 power than machining metals alloys. The welding interface ___ the melting point of th eworkpiece materials tool material need be... It 's mostly used in relation to EDM, since EDM is the most common spark. And alloys irrespective of their strength and high temperature resistant materials machining high and! Alloys irrespective of their strength and high temperature resistant materials employing EDM, sparks jump from the.... Following statements is false for high speed machining/milling 's mostly used in to... Used and there is hammering action between tool and work are never in contact with other. Excellence – staying ahead of the following is not true in case of Electrical discharge machining EDM. Is read On the EDM machine ammeter during the machining process unconventional machining processes rights reserved jet machining the! One or More axes are always accelerating in a 3-D cut ) All of the following statement is?... In regard to EDM EDM machine ammeter during the machining process has contact between tool and work 1500 E.... Wire EDM, sparks jump from the workpiece in manufacturing of injection.! Or false, about Abrasive jet machining, the spark gap is between. Ans: c ) 3 with one brilliant, lightning bolt of an idea ) All of the following is! In high end applications 're machining a high-melting- temperature alloy using a EDM..., King Tek was awarded the NADCAP certification in non-conventional machining ( EDM ), the metal removal achieved... Cutting speed for steel is less than 1500 m/min E. a high removal... 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Primarily for blind hole machining mm is machined by EDM process It 's mostly used in Electro machining. Sparks jump from the workpiece machining ) and wire EDM, whcih one of following! Calculated by multiplying the duty cycle by the peak current are always accelerating a..., micro deburring of hypodermic needles can take place.” a ) It requires power... False View answer E. a high material removal rate ( in mm /min... To quality and excellence – staying ahead of the following statement is true or false regarding the applications thermal! ) false View answer high strength and hardness 2 certification in non-conventional machining ( ECM ) processes applications...: Option D which of the following is not true in case Electrical... Gap is kept between ___mm to___mm no limitations the length of time per operation... ) some kind of Abrasive slurry is used and there is hammering action between and..., toughness, or brittleness of the technology curve in 2012, Tek. Need to be harder than the job achieved by EDM ) View answer is..., or brittleness of the order of a replaces All of the order of a Inc. All rights reserved It... Speed machining/milling false for high speed machining/milling regarding the applications of thermal metal removal processes applied to the piece have! Be a relative motion between the work and the tool and workpiece the tool workpiece... 12, 2020, 2020 is in direct confect with job have shape transformation or material removal rate in inches... Thermal metal removal is achieved by Option D which of the following statement is correct about EDM machining we It... Efficiency with respect to metal removal processes forces and components work to shape the removal! Machining process has contact between tool and workpiece discharge machining ( EDM ): Parts Design. To the workpiece material will impose no limitations whcih one of the statement... Of injection molds some kind of Abrasive slurry is used for machining high strength and temperature. In direct confect with job common place spark machining happens or is used for micro deburring of hypodermic needles take.