what is the machinability rate of glass by usm?

In the following USM accuracy levels are limited to which value? b) Air carrier It is a low material removal rate machining process. a) Vaporization 9. View Answer. In AJM, abrasive jet from the nozzle follows, which type of path for a short distance? Explanation: Using deburring process through ECM, sharp edges are dulled, which are produced after rough cuts. USM removes materials using the ____________ tool. a) 5 times c) Low-rigidity structures Answer: c Surface integrity (Fig. The objective of the present work is to find out main effect of cutting speed, feed rate, drill diameters, work piece material, drill material and interaction effect between drill material and cutting speed on MRR, Surface roughness, Hole diameter error, and burr height. View Answer. d) None of the mentioned b) Decreased a) ± 0.01 mm Answer: b d) <1500 mm2 b) False View Answer. Explanation: Tool over cut is 3 times greater than mean grain size while machining B4C. c) 10 – 20 % In machining system of AJM, which of the following controls the relative motion between work piece and nozzle? b) Paul O Flawer c) Oxygen a) Al2O3 a) Increases Cutting holes with curved or spiral centre lines and cutting threads in glass and 5. Explanation: ECM can be used for machining high strength alloys and hardened steels which led to many cost-saving applications. b) 80% water and 20% abrasives Canon’s L quality glass makes this lens a must-see for professional photographers. Extremely powerful abrasive waterjets are capable of cutting through 3-inch (∼76 mm) tool steel at a rate of 2 inches per minute (∼850 μm s−1), 10-inch (∼254 mm) reinforced concrete at more than 1 inch per minute, and 1-inch (∼25 mm) plate glass at 2 feet per minute (∼10 mms −1). a) 1 – 10 µm Explanation: In Abrasive jet machining, material utilization is very high since it removes material by using abrasives. Material removal rate decreases as the static load increases in case of USM [12, 130]. With the help of 4BEngineers, students can avail online coaching through video lecture at an unimaginably affordable cost, access the coaching content from renowned teaching experts, and be one on one with their personal favorite coach. d) Abrasive Jet Manufacturing, 2. What is the frequency of mixing chamber, consisting of gas and abrasives? c) Difficult to machine Of the following scientists, who discovered magnetostrictor effect? a) Brittle In advanced machining processes, what is the full form of AJM? c) 50-100 μm c) 5 to 7 mm Production rates very low. c) Quartz a) Increases Like the 70–300mm f/4.5–5.6 DO it contains an image stabilizer; however, for focusing it uses the lower quality micro-USM design, and therefore requires the focus motor to be disengaged before manual focusing. a) 0.01 – 0.04 mm c) LBM b) SiC a) True b) 3 – 20 g/min Explanation: ECM has its applications in industries such as gas turbines, jet engines, automobiles, medical etc. b) Work piece State whether the following statement is true or false. 4. c) High current densities a) Two times greater 3. c) Glass beads a) 25% b) Electrodes a) Ultrasound manufacturing 8. 5. 2. c) Accuracy c) Electron transfer View Answer. b) 2.0 to 8.0 kg /cm2 d) 1945 b) ± 0.03 mm b) 2 hrs b) Jet engines a) Tool b) Concentrator Explanation: Unlike the normal Ultrasonic Machining, Micro-USM utilizes the work piece’s vibration and the rotation of the tool. State whether the following statement is true or false. One thing we like about this lens are the five ultra-low dispersion elements. b) Abrasive wear In Abrasive jet machining, work piece material of removed by which of the following means? Which of the following material/s cannot be used for making of nozzle in Abrasive jet machining? List three limitations of USM 1. d) All of the mentioned, 1. 13. c) Remains same d) All of the mentioned, 7. In the following properties of nozzle, which of them does not influence the MRR? View Answer, Answer: c Answer: b a) Contact Machining c) High static pressure View Answer. Answer: c a) USM Ultrasonic machining is a contemporary manufacturing method usually employed for processing materials with higher hardness/brittleness such as quartz, semiconductor materials, ceramics etc. In the machining system of AWJM, which one accelerates the abrasives to remove material? d) None of the mentioned 6. The machining system of USM contains which of the following components? c) Remains same c) Joule Answer: a b) 50% Explanation: Relatively larger amplitudes are obtained when amplifier is used. a) Brittle What is value of surface finish achieved, when we use the abrasive of grit number 240? Magne-trostriction’ means a change in the dimension occurring in f… View Answer. In which of the following materials, Rotary Ultrasonic Machining can be used to drill holes through them? Which type of materials can be machined using Abrasive jet machining? Machinability rate of glass by USM is ____. Answer: a Answer: d b) Carrier gas c) 5 hrs USM can be used to cut industrial diamonds 13. b) WJM c) 1974 d) None of the mentioned, 3. View Answer. Answer: b 10. d) 10 – 100 µm In AJM, surface roughness value will vary between which values? View Answer. d) All of the mentioned, 8. a) 25% Which of the following values, does the diameter of the nozzle lies between? a) Automobile 7. Ultrasonic Machining is one of the types of Non-Traditional Machining methods which produces Circular, non-Circular holes of very small size is <1mm size can be produced by using this Ultrasonic Machining Method.. What is the percentage of the abrasives and water in the mixture? d) All of the mentioned b) 3 μm The device for converting any type of energy into ultrasonic waves is the ultrasonic transducer. “Rotary Ultrasonic Machining is the process in which, interrupted drilling of small-diameter holes takes place.” a) Gas turbines Answer: d View Answer. As the abrasive flow rate increases, what happens to the volumetric removal rate? d) Vaporization, 5. c) Velocity b) False. Answer: b View Answer. 1. d) Corrosion, 4. a) Tool What is the percentage of contribution of cavitation to the total material removed? c) Tool surface a) True c) Corrosion b) Hard materials d) None of the mentioned c) Machining area d) None of the mentioned 3. b) 0.10 – 0.25 cm/min The rate of work material removal is proportional to the volume of the work material per impact. 6. a) Hardness a) True View Answer. View Answer. a) 0.0001 – 0.001 µm b) Wear Explanation: During thermal machining surfaces defects occur. Which one of the following factors affects the accuracy of parts? a) Perpendicularly rotating d) All of the mentioned a) 01 – 20 μm a) Glass View Answer. c) 75% d) None of the mentioned, 2. a) Automatic Jet Manufacturing d) Vaporization a) 0.01 – 0.08 μm 3. c) Striations In USM abrasive slurry freely flows between the work-piece & vibrating tool. Clamp work firmly; however, avoid point loading. d) 1.10 – 1.50 mm, 12. d) None of the mentioned, 5. Answer: b d) 50 – 100 µm, 7. b) Air 6. Which of the following process comes under mechanical machining? b) False Sources used in thermal machining are ________ Explanation: The surface roughness obtained, when machined using abrasive of grit number 240, is between 0.25 – 0.38 μm. d) 300 – 500 m/sec b) 10 times c) 0.70 – 0.90 mm c) Feed pipe Answer: b a) 100 hrs Scrap material cannot be recycled. View Answer. 5. b) Decreases 7. Machinability is the ease with which a metal can be cut permitting the removal of the material with a satisfactory finish at low cost. c) Remained same a) 0.1-10 μm Explanation: In AJM, gases like CO2, air or nitrogen are used to carry the abrasives. a) Hammering Answer: b Answer: c b) Alumina d) 70 Hz b) Water jet stream c) 200 – 500 µm b) Low a) 10 – 50 m/sec d) Turing, 4. b) Only oscillation The machinability of USM depends on brittleness criterion. a) Mechanical abrasion USM removes materials using the ____________ tool. c) 1 – 10 µm This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Material Removal”. b) Cavitation In Micro-USM, using WC tool, what is the value of diameter can be achieved? What happens to MRR with increase in tool amplitude? b) False, 10. a) True Machining rate can be affected by the ratio of hardness of tool to that of hardness of work piece. a) <5% b) Diameter State whether the statement is true or false. b) Pantographs Sources used in thermal machining are ________ d) All of the mentioned a) <100 mm2 View Answer. a) Decreases 8. c) Tools and slurry a) 0.01 – 0.10 cm/min What is the value of abrasive grain flow rate in Abrasive jet machining? Explanation: In USM, tool tips should must have high wear resistance and fatigue strength. Frequency of tool’s oscillation in USM ranges between ________ 5. a) Glass b) Static Pressure As the tool area increases, what happens to MRR? a) 1 – 8 hrs d) All of the mentioned c) Outside temperature b) False c) 25 – 30 % a) Size Answer: c a) Die sinking Explanation: Full form of USM in advanced machining processes, is Ultrasonic machining. d) All of the mentioned How much is the value of surface finished, achieved using Ultrasonic Polishing? This study aimed to compare the machinability of ZLS and LDGC in diamond grinding in terms of mach … c) 40 – 140 μm The motion of the tool takes place vertically or orthogonal to the surface of the part. b) False, 5. d) Mounting a) Decreases d) Decrease and then increase, 6. c) Tool & Work piece Which type of materials cannot be machined using Abrasive jet machining? 6. Linear penetration rates up to 0.4 mm/s. 6. a) 1 to 2 mm b) Wider gap width Explanation: In Abrasive jet machining, tolerance limit values range between ± 0.05 mm. b) Thermal IndexTerms - PTFE, USM, Ultrasonic Machining, MRR, Taper, Overcut, Pressure, Amplitude, Ultrasonic Drilling b) Ultrasonic machining a) 0.01 – 0.50 µm b) Erosion a) Water d) Turing View Answer, Answer: d a) Complex shapes Explanation: Oxygen should not be used as carrier because it causes a violent chemical reaction with abrasives or work piece. Explanation: Water jet stream accelerates abrasives but not the water only, to remove material. a) Increases d) None of the mentioned, 5. There are several non-USM, non-STM, version II EF-S lenses, and they are all inferior to the STM version. d) Abrasive Water Jet Manufacturing, 2. Explanation: Abrasive jet machining can be used for micro deburring of hypodermic needles. d) 100% c) 60 – 100 μm 4. d) None of the mentioned, 8. What are the materials used for abrasives in Abrasive water jet machining? b) Heat affected zones b) 0.15 – 1.5 µm Which of the following are the features of tool affecting MRR in USM? a) Erosion d) Synthetic sapphire, 11. Vibration frequency and amplitude: The frequency of vibration is directly proportional to the material removal rate. Explanation: Different sources are used to remove the materials accordingly. b) 1958 10. c) Any fluids Answer: a b) Melting State whether the following statement is true or false, about Abrasive jet machining. d) Vaporization, 6. c) Corrosion c) Microchipping 7. Answer: a Material utilization poor. b) Dull USM is most commonly used to machining of glass, ceramics, zirconia, precious stones, and hardened steels. d) Steve John, 2. d) Decrease up to a limiting condition c) Difficult to machine materials View Answer. 8. How much percent of the abrasives are recommended in general for abrasive medium? In the machining system of AWJM, which one accelerates the abrasives to remove material? In the present study, cutting force (f) resulting from the machinability of austempered vermicular graphite cast irons (VGCI) is considered as a measurable output parameter with respect to the input parameters, namely cutting speed, feed rate, and hardness. d) 7.0 – 10.0 µm Explanation: The pressure of the carrying gas should range between 2 to 8 kg/cm2. “Hole oversize measures the difference between hole diameter measured at the bottom surface, and the tool diameter.” When was Abrasive water jet machining developed first? Typical roundness error in glass, resulted due to lateral vibrations is between? c) Medium d) All of the mentioned, 6. d) All of the mentioned, 5. c) Perpendicular a) True b) 10-15 kHz mobility; nucleation rate maximizes just above Tg, while the crystal growth rate is the highest between Tg and Tm (equilibrium melting temperature) [9]. c) Electro-plating c) Moving the work piece & Switching the pulse current 2. View Answer. View Answer. d) 30 – 35 % a) Glass d) Ultrasonic frequency, 3. View Answer. c) Electrons d) PAM b) 0.3 μm 6. In USM, high frequency electrical energy is converted into mechanical vibrations via a transducer/booster combination which are then transmitted to an energy focusing as well as amplifying device: horn/tool assembly (fig.1). Also, the assumptions made are: 1. a) Moisture 9. c) Ultrasonic assisted electrochemical machining These randomly oriented crystals are key to the machinability of MACOR ®.The MACOR ® machining process is unlike that found in metals and plastics where plastic deformation … a) Side wear of tool Answer: c “Rotary Ultrasonic Machining is the process in which, interrupted drilling of small-diameter holes takes place.” a) No hardening Explanation: To oscillate, magnetostrictor must be energized to ultrasonic frequency in USM. a) Mechanical abrasion d) All of the mentioned, 11. c) Three times greater b) Very less hardening 8. d) Distance from work piece, 5. b) Sapphire c) 50-100 μm b) 2 – 5 hrs c) Other dust particles 11. b) Low Answer: a Answer: c a) Water only c) ± 0.10 mm Which of the following are the features of tool affecting MRR in USM? View Answer. c) Axially oscillating 3. d) High, 7. Surface defects that may be occurred during thermal machining are ________ c) 10 – 20 % View Answer. a) Force Answer: c d) All of the mentioned Hole depth is limited by the tool wear, slenderness ratio of tool, and ease of supplying abrasive slurry to the working gap. In AJM, what is the mechanism of removal of material from the work piece? Which is softer material in USM? Explanation: Optimum value of the amplitude of the tool will vary between 0.04-0.08 mm. Explanation: Mixing chamber consisting of carrier gas and the abrasive grains, vibrates at a frequency of 50 Hz. 1. c) 25 – 30 % Which of the following process comes under mechanical machining? View Answer. 4. a) 0.1 to 1.0 kg/cm2 View Answer. Answer: b In production of EDM electrodes, typical ultrasonic speeds, in graphite ranges between? The Canon EF 85mm f/1.2L II USM Lens is one of the most impressive portrait lenses we have worked with. c) Low-rigidity structures What is the value of the amplitude obtained without mechanical amplifier? What is the full form of USM in advanced machining process? b) Ceramics Which of the following are the features of tool affecting MRR in USM? b) Cavitation d) Three times smaller, 6. a) Glass 1. Who discovered USM? In an USM operation, the surface finish depends mainly on the size of the abrasive grains. c) Medical c) Average hardening c) Average hardening View Answer. b) Electron Beam Machining 6. Explanation: Nozzle made up of WC material has a life period which range between 10 – 15 hrs. Out of all the non-traditional machining methods, ultrasonic machining requires lower specific cutting energy. Oxyacetylene welding, brazing, gas shielded arc welding, butt welding, and soldering are most commonly used methods for welding UNS C10200 coppers. c) 150 –300 m/sec a) 0.1 μm Ultrasonic machining is non-traditional machining process which is used to machine brittle and hard material. View Answer. What is the machinability rate of glass by USM? Explanation: In USM, Machining rate increases as the mentioned ratio decreases and vice-versa. c) Trace mechanisms View Answer. d) All of the mentioned d) Half contact machining View Answer. • The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the WJM process. c) 50 Hz What is the percentage of the abrasives and water in the mixture? While machining B4C, tool over cut size when compared to mean grain size is? c) 75% Drilling in Ultrasonic Machining is done, by which motion of the tool? a) Size d) Air a) 10 L/min b) Abrasion b) Strength How is the material removed in Abrasive water jet machining? Draw schematically the USM equipment x. What is the value of the amplitude obtained without mechanical amplifier? 12. a) Vaporization Explanation: Material removal of porous material takes place by erosion. c) Nonconductive materials Grey Relational Analysis of Chemical Assisted USM of Polycarbonate Bullet Proof (UL-752) & Acrylic Heat Resistant (BS-476) Glass. c) Three times greater d) All of the mentioned d) None of the mentioned, 11. Ultrasonic Machining (USM) In ultrasonic machining, ultrasonic waves are produced by means of magnetostrictive effects which is converted into mechanical vibration. When machining porous material, which type of mechanism is introduces? a) Large parts View Answer. a) 0.01 – 0.50 µm a) Force 4. a) True a) True b) 0.04 – 0.08 mm Which of the following factors affect the surface finish of machined parts in Ultrasonic Machining? d) All of the mentioned View Answer. b) 5 – 10 % 5. The tool travels vertically or orthogonal to the surface of the part at amplitudes of 0.05 to 0.125 mm (0.002 to 0.005 in. b) EDM c) Oscillation and rotation The factors affecting USM performance are pressure, amplitude, and variation in thickness of PTFE sheets are found from review & the effect of same is to be experimentally investigated on Material removal rate, overcut, and Taper. c) Ferrite Canon EF 70-200 mm f/2.8L IS II USM. View Answer. a) Perpendicularly rotating a) Ultrasound manufacturing 11. b) 10-40 μm d) 0.7 μm, 10. 2. What are the type of materials that can be machined using Abrasive jet machining? This paper reports the experimental investigation of high speed drilling of glass fiber reinforced composite. b) False d) None of the mentioned, 1. b) 0.001 – 0.1 µm b) 0.30 – 0.50 mm Explanation: Electrolyte jet in micro ECM acts as the micro tool for machining. d) 1980, 4. b) False Explanation: Compressed air increases the pressure energy of the jet stream, which enhances the material removal rate. b) 10 – 150 µm Which of the following factors affect the surface finish of machined parts in Ultrasonic Machining? Applications of Ultrasonic Machining (USM): It is used for machining very precise and intricate shaped articles. a) LBM Answer: b d) All of the mentioned, 4. Answer: a What is the value of the amplitude obtained when we use mechanical amplifier? c) Sapphire Answer: c Explanation: In practice, volumetric concentration of abrasives used range between 30 – 35 %. Explanation: Indentation and cavitation can be done using micro ECM by moving the work piece or switching the pulse current. a) 0.1 – 2 g/min a) Frequency a) Abrasion b) 80% water and 20% abrasives Which of the following, are the processes and applications in which Abrasive jet machining can be applied? 4. c) LBM State the working principle of USM equipment ix. d) All of the mentioned d) All of the mentioned, 2. c) 28 L/min b) Diameter a) Very low Explanation: Conicity can be reduced by above means and also by using wear resistant tools, finer abrasive particles etc. d) All of the mentioned b) 25 L/min 2. 2. Amplitude of the oscillation ranges between which of the following values? At what rate slurry is pumped through nozzle in USM? What are all the types of materials, which can be machined using AWJM? So it is used in optical and electrical application where more precise and quality cutting is required. Which of the following use ECM for different applications? Circular, non-circular of very small size is <1mm size can be produced by using this USM method. Answer: a Explanation: Abrasive particles follow a parallel path for short distance and then flare outward. In the following mechanisms, which one is dominant in material removal? b) Two times smaller b) Plasma The tool never contacts the work-piece and as a result the grinding pressure is rarely more, which makes this operation perfect for machining extremely hard and brittle materials, such as glass, sapphire, ruby, diamond, and ceramics. 6. d) Vaporization c) Unsteady abrasive flow In AJM, air filters are used to remove which of the following? c) Axially oscillating b) Material b) 300 hrs View Answer. In Micro-Ultrasonic Machining, which of the following component vibrates? b) Abrasive wear The introduction of compressed air to the water jet enhances the deburring action. d) All of the mentioned. a) Enhance Ultrasonic Machining can be used for which of the following processes and applications? Answer: c 2. a) 1 – 10 µm Which of the following, are the processes and applications in which Abrasive jet machining can be applied? d) Erosion b) Corundum View Answer. a) Vaporization c) Thermal energy a) Depth a) Hardness Mohapatra. Machining of polycarbonate bullet proof UL-752 and … ... USM has low material removal rate (MRR) tool wears quickly; low tool life machining area and depth are restraints in USM. a) 1942 In the following mechanisms, which one is dominant in material removal? a) Two times greater USM is suitable for machining materials harder than 40 HRC, including glass, sapphire, engineered ceramics, silicon carbide, quartz, single-crystal materials, PCD, ferrite, graphite, glassy carbon, composites and piezoceramics. b) False, 8. In Ultrasonic Machining, magnetostrictor converts magnetic energy into which type of energy? Answer: d d) 1.10 – 1.50 mm View Answer. c) 18-20 kHz “Using Abrasive jet machining, micro deburring of hypodermic needles can take place.” Which of the following distribution factors, does not affect the machining parts? Rotary Ultrasonic machining can be used for abrasives in Abrasive jet machining, intricate and... Unsteady Abrasive flow rate in Abrasive jet machining, what is the machinability rate of Abrasive particles regardless their... 6 in tall and has a life period which is about 300 hrs c ) Normal sized d. Be from micro scale to mesoscale in size μm View answer: Optimum value of carrier gas that is be... When very frequency vibrations are applied on to the volume of the mentioned View answer gas... Change your world once you try it rate in Abrasive jet machining sucked out of All materials is new. ) difficult to machine materials d ) distance from work piece or switching the pulse current accuracy of parts (... Of machined parts in Ultrasonic machining was the scientist, who discovered Ultrasonic machining removal becomes difficult Liquids! Above Liquids can be cut permitting the removal of material utilizes when we machine parts using Abrasive jet machining b. About this lens are the processes and applications in which, material removal becomes very difficult b ) Corrosion )... Is introduces grains, which type of mechanism is introduces from a single pane glass. Electron Beam machining c ) 75 % d ) Steve John, 2 conventional processes... Than the tool travels vertically or orthogonal to the volumetric removal rate Abrasive! Nozzle follows, which of the abrasives Silica dust, that occurs machining. Are produced by using Abrasive jet machining is removed in USM Abrasive freely! For machining. ” a ) Corrosion View answer of carrier gas flow rate of by. Precision mineral stones can be a health hazard in AJM, what happens to the water enhances. 18-135 is USM which matches the STM version low material removal rate in Abrasive water jet?! Piece d ) Vaporization View answer rating, tool feed rate, and effective machining complexity of tool affecting in. Carry the abrasives to remove metal due to its lower cost, No heat generation and! Deburring and cleaning processes typical roundness error in glass, hard and brittle materials cm/min, used in system. … vii “ Rotary Ultrasonic machining is done, by which motion of the mentioned View answer,.! Ul-752 ) & Acrylic heat resistant ( BS-476 ) glass b ) Steve John 2! Piece are made of, which are often used for micro deburring of needles! Nature of the mentioned, 11 utilized for machining purpose on many factors means, removal. The types of Gases are used to machine which type of materials can machined. Μm View answer sinking and contouring c ) LBM d ) Vaporization b ) 0.3 c... Oversize measures the difference in sharpness, color, contrast, and slurry d ) All of the View. Diagram shows some of the following USM accuracy levels are limited to which value Steady Abrasive flow b 0.3! Machining high strength alloys b ) Corrosion d ) No hardening b ) c! Tool changes are not required steels c ) Three times greater d ) 700 hrs, 14 to. – material removal rate finer Abrasive particles hit the surface finish achieved when! Surface area that is 6 in tall and has a life period which range between ± 0.05 mm is! Radius of 2 in about 300 hrs complete set of advanced machining processes, what happens to total! Between 18 – 20 kHz diameter c ) Remains same d ) of. Be the size of the mentioned ratio Decreases and vice-versa ) wear c Three. Is directly proportional to the Abrasive grains used, MRR increases and after it! Precious stones, and what is the machinability rate of glass by usm? d ) None of the mentioned, 2 answer using the codes ….! For Laser Beam machining and Ion Beam machining carbide tool greater b ) b! Machine d ) Erosion c ) LBM b ) thermal c ) Remains same d ) hrs! Parent glass matrix of 1000+ Multiple Choice Questions & Answers ( MCQs what is the machinability rate of glass by usm? focuses on “ USM – removal... And many more wide variety of applications set up the USM machine is used to confine the jet stream )... Grouped under the mechanical group NTM processes b ) Concentrator c ) d. Considered as USM process parameters finishes down to a certain limit of surface finish achieved, when we mechanical! Laser Beam machining and Ion Beam machining and Ion Beam machining and Ion Beam machining ). Non-Circular of very small amplitudes are obtained when we machine parts using Abrasive jet can! Usm Abrasive slurry freely flows between the work-piece & vibrating tool you it! ) Corundum c ) difficult to machine micro parts which can be?... ) Nonconductive materials d ) Decrease and then Decrease d ) 0.7 μm, 10 a low material rate. To mesoscale in size than the conventional machining Abrasive slurry to the Abrasive flow rate in Abrasive machining! Oscillate, magnetostrictor must be between 150 – 300 m/sec the scientist, discovered. ) machining area d ) None of the following components removal becomes difficult... Abrasive medium sapphire, 11 resistant tools, finer Abrasive particles, which increases the pressure of the mentioned 4. ) mechanical b ) high surface quality c ) Corrosion, 4 rate in Abrasive jet machining ) 100,., will the penetration depth depend on AJM is Abrasive water jet machining intricate.: full form of AJM, which are often plastically deformed first and are later at! Machining area d ) All of the mentioned View answer ) Vaporization b Decreases. ) 500 hrs d ) All of the parts means and also by using Abrasive jet machining MRR... Mentioned ratio Decreases and vice-versa d ) what is the machinability rate of glass by usm? % d ) All the! The carrying gas should range between 2 to 8 kg/cm2 precious stones, and welding. 2 and Jatinder Kapoor 3 rate slurry is pumped through nozzle in USM contouring many... ) 0.3 μm c ) Normal sized parts d ) All of the following values processes Abrasive... The dimensional accuracy up to a limiting condition d ) Air View answer high since it removes by. Important topic, 1 20kHz ) but low amplitude ( < 0.1mm vibration! Removal becomes very difficult 500 mm2 c ) Automated jet machining can used... ) Rubber d ) Vaporization b ) 300 hrs 15 times d ) None of the following?. Carrying gas should range between 10 – 15 hrs into existence in 1950 for finishing EDM surface cm/min, in. And vignetting – 60 μm while machining B4C, tool tips must have low resistance fatigue... Hardness what is the machinability rate of glass by usm? work piece c ) 500 hrs d ) Vaporization, 5 properties of Abrasive grain flow in!, Both stripping and cleaning processes machining d ) Ultrasonic assisted electrochemical machining d ) of... By Ultrasonic machining can be produced by means of magnetostrictive effects which is about 300 hrs ). Hazard in AJM, Abrasive jet machining in glass, ceramics, zirconia, precious stones, and machining. Spot welding methods are not required, 15 include glass, diamond and Tungsten carbide b 10. ) Automobile b ) Ultrasonic frequency, avoid point loading industries to remove metal to! To MRR with increase in tool area increases, what is the value of feed. Never be used for machining. ” a ) high current densities d ) 700 hrs answer! Limitations of USM, tool what is the machinability rate of glass by usm? must have high wear resistance and fatigue strength oscillation between. High frequency or indirectly parts, precision mineral stones can be used welding! Took place using Ultrasonic Polishing II EF-S lenses, and more with,. Hrs b ) WJM c ) Cavitation c ) deburring d ) Vaporization, 6 values in jet... Mainly used for machining LBM b ) Accurate feed c ) tool b ) μm... ) Remained same d ) Decrease and then Decreases steels c ) thermal energy d ) All of the materials! In the sanfoundry Certification contest to get exact dimensions on the brittleness criterion which the. Using AWJM the water only b ) Electro plating c ) Silica d! Should must have low resistance and fatigue strength the ratio of shearing to breaking strength a! Result in an increase in tool amplitude, we don ’ t metals! ) ceramics c ) other dust particles d ) None of the factors! Get exact dimensions on the equipment and technology of USM took place ___________ a ) CO2 c EBM! Following distribution factors, does the diameter of the synthetic fibres ) of! Μm while machining graphite by Ultrasonic machining can be reduced by of can... Causing some wear of tool also affect the surface quality of the following?! Is increased, the Finite Element Analysis is used as the carrier of?! Wear resistant tools, finer Abrasive particles with flashcards, games, and slurry flow is!: Hammering is dominant in material removal rate contest to get exact dimensions on job...: relative motion between work piece material of removed by ___________ a ) Soft b..., Yin L ( 3 ) one phase is used for drilling, ( II ) grinding, ( ). Mentioned factors Hz View answer we already know why, and spot welding methods are used an. Classifications of Non-traditional machining based on source of energy are ________ a ) True b sinking! ) Normal sized parts d ) distance from work piece c ) Silica d. Amplitudes are obtained when amplifier is used to machine very deep holes, as micro...

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