In Abrasive jet machining, what may be the size of the abrasive grains used? The gas flow and pressure is controlled by a pressure regulator. Water Jet Machining (WJM) also called water jet cutting, is a non-traditional machining process in which high-velocity jet of water is used to remove materials from the surface of the workpiece.WJM can be used to cut softer materials like plastic, rubber or wood. What used to be known in the 80s as a rather obscure, albeit fascinating, cutting method has gone mainstream. View Advanced Machining Sheet.pdf from VIBRATION MED 101 at Engineering College. The gases used are nitrogen, carbon dioxide or clean air. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) Increases continuously B. Decreases continuously C. Decreases becomes stable and then increases D. Increases, becomes stable and then decreases Answer: Option D Normally inaccessible portions can be machined with fairly good accuracy. While nozzles of sapphire last for about 300 hours of operation when used with 27-micron abrasive powder. a) Nitrogen In Abrasive jet machining, what may be the size of the abrasive grains used? Dec 26,2020 - Unconventional Machining Process - 3 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. View Answer, 12. Answer: a Explanation: Abrasive grains of size, between 10 – 40 µm can be used for machining. This outgoing high-speed stream of the mixture of gas and abrasive particles is known as abrasive jet. Apart from flow rate and size, types of abrasive also influence machining performance. d) All of the mentioned The process finds application in cutting slots, thin sections, contouring, drilling, for producing shallow crevices, deburring, and for producing intricate shapes in hard and brittle materials. Electrochemical Machining c. Abrasive Jet Machining d. Laser Beam Machining (Ans:b) 21. In this experimental investigation, waspaloy is used to analyse the kerf angle (KA), surface roughness (SR) and material removal rate (MRR) during abrasive water jet machining. While most professionals in the manufacturing industry have heard of waterjets, they may not realize there are actually two distinct forms of this process available. c) Deburring The abrasives generally used are silicon carbide, aluminium oxide, glass powder or specially prepared sodium bicarbonate. with [Pictures & PDF], 12 Types of Spanners and Their Uses [with Pictures] PDF. A typical material removal rate for abrasive jet machining is 16 mm/min in cutting glass. High velocity stream of abrasive is generated by converting the pressure energy of the carrier gas or air to its kinetic energy and hence high velocity jet. The AJM differs from sandblasting. The metal is removed due to erosion caused by the abrasive particles impacting the work surface at high speed. The abrasive particles are held in a suitable holding device, like a tank and fed into the mixing chamber. d) Abrasive Jet Manufacturing Ability to cut intricate hole shapes in materials of any hardness and brittleness. b) 30 Hz here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Advanced Machining Questions and Answers – WJM – Advantages and Disadvantages, Next - Advanced Machining Questions and Answers – AJM – Material Removal Rate and Process parameters, Machine Design Questions and Answers – Levers, Machine Design Questions and Answers – Fracture Mechanics, Curved beams & Thermal Stresses, Mechanical Engineering Questions and Answers, Engineering Materials and Metallurgy Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Machine Tools & Machining Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Advanced Machining Processes Questions and Answers, Advanced Machining Questions and Answers – Electro Discharge Machining-Introduction, Advanced Machining Questions and Answers – Electronbeam Machining-Introduction, Equipment and Material removal, Advanced Machining Questions and Answers – AWJM – Process Capabilities, Advanced Machining Questions and Answers – Electro Chemical Machining-Introduction and Principle of electrolysis, Advanced Machining Questions and Answers – Non Traditional Machining, Advanced Machining Questions and Answers – Plasma Beam Machining-Introduction And Machining system, Advanced Machining Questions and Answers – MAF – Applications, Advanced Machining Questions and Answers – Water Jet Machining – Introduction and Machining system, Advanced Machining Questions and Answers – Ion Beam Machining-Introduction, Material Removal Rate, Advanced Machining Questions and Answers – AJM – Material Removal Rate and Process parameters, Advanced Machining Questions and Answers – Ultrasonic Machining – Introduction, Advanced Machining Questions and Answers – Traditional Machining, Advanced Machining Questions and Answers – USM – Factors Affecting MRR. If abrasive water jet machining is used, abrasive particles mixed in water stream before entering into nozzle. b) Ceramics Their writers are highly professional, and always deliver orders on time. View Answer, 13. d) All of the mentioned a) 10 – 40 µm b) 50 – 100 µm c) 100 – 150 µm d) 200 – 300 µm View Answer. Presentation of-abrasive-jet-machining 1. View Answer, 6. Smaller sizes are used for good surface finish and precision work. Drain and Catcher. a) True c) Mechanical abrasion In this machining process a focus stream of abrasive particles are forces to impinge on work piece at high velocity. It is often used for cleaning and polishing of plastic, nylon and Teflon components, the frosting of the interior surface of the glass tubes, etching of markings on glass cylinders, etc. MCQ on Mechanical Energy Based Unconventional Machining Process. What are the processes where Abrasive jet machining can be used? a) Al2O3 c) Hard materials View Answer, 3. Common uses include cutting heat-sensitive, brittle, thin, or hard materials. Answer Explanation ANSWER: any of the above medium. Following are the parts of abrasive jet machining: The filtered gas, supplied under a pressure of 2 to 8 kgf/cm to the mixing chamber containing the abrasive powder and vibrating at 50 Hz entrains the abrasive particles and is then passed into a connecting hose. Which of the following gas, should never be used as the carrier of abrasives? Participate in the Sanfoundry Certification contest to get free Certificate of Merit. c) 50 Hz 8.5 Average quality score. Abrasive Jet machining Consists of several Parts like: Gas Supply; Filter; Pressure Gauge; Regulator; Mixing chamber; Nozzle; 1. View Answer, 8. Here the work is to clean the fuel if there are any dust particles present. While larger sizes are used for rapid removal rate. If you any doubts or questions about “abrasive jet machining” ask in the comments. Gas Supply: Gas is supply to the system for the operation. a) Copper High velocity of (water mixed with abrasive) is projected on the work piece which causes abrasive action and deformation of work piece takes place. _____ is a non-traditional machining processes that depends on the eroding effects of different reagents. This is basic of water jet machining (WJM). Abrasive Jet Machining writers available to do this job. In machining system of AJM, which is the medium of carrying the abrasive grains for machining? Join our social networks below and stay updated with latest contests, videos, internships and jobs! The metal removal rate depends upon the diameter of the nozzle, the composition of the abrasive gas mixture, the hardness of abrasive particles and that of work material, particle size, the velocity of jet and distance of the workpiece from the jet. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Water Jet Machining – Introduction and Machining system”. c) Any fluids b) Electro plating The disadvantages of the process lie in the following: That’s it, thanks for reading. Waterjet machining is an innovative cutting method, and one of the fastest-growing processes for machining today, thanks to its ease of use and versatility. c) Oxygen WHAT IS ABRASIVE JET MACHINING ? On normal production work, the accuracy of +0.1 mm is easily held. What are the processes where Abrasive jet machining can be used? The drain and catcher system is used to remove debris and other machined particle form water. An ever growing number of fabricators and machine shops are gaining a competitive advantage by incorporating abrasive waterjets to their machining mix. It is the material removal process where the material is removed by high velocity stream of air/gas or water and abrasive mixture . View Answer, 2. d) None of the mentioned To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. b) decreases continuously. d) All of the mentioned It is another non traditional machining process where there is no contact between tool and the work piece. b) CO2 Waspaloy is also a nickel-based superalloy with exceptional strength properties at a temperature of 980 °C. It is used for deburring, etching, and cleaning of brittle metals, alloys, and non-metallic materials. The objective of this paper is to optimize material removal rate and kerf width simultaneously using AWJM process on INCONEL 718. This process can be advantageously utilized for surface cleaning, coating removing, deflashing, trimming, engraving, deburring, drilling, parting, ceramic abrading, glass frosting, etc. a) 10 – 40 µm Abrasive Water Jet Machining (AWJM) is one of the non-conventional machining processes which make use of high water pressure to be converted into jet of high velocity mixed with abrasive particles. In this post, you learn abrasive jet machining its working principle, parts, applications, advantages and disadvantages. Explanation: No explanation is available for this question! Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. a) 10 Hz Water is used as abrasive in such machining . Surface finish with Ra values varies from 0.3 to 2.3 µm. A regulator is incorporated in the line to control the flow of abrasive particles compressed air or high-pressure gas is supplied to the mixing chamber through a pipeline. In this article, you'll learn what is cams and followers and its types, nomenclature, working, application, and more with diagrams. b) Cutting In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. This test is Rated positive by 92% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. The process parameters are chosen as abrasive flow rate, pressure, and standoff distance. a) Vaporization Abrasive Jet Machining is also known as Abrasive micro blasting, Pencil blasting, or Micro Abrasive Blasting.. Abrasive Jet Machining is useful to form edge shapes or surface machining in hard, brittle, and temperature-sensitive material. a) Liquids Nozzles made of tungsten carbide have an average life of 8 to 12 hours. This abrasive and gas mixture emerges from a small nozzle mounted on a fixture at a high velocity ranging from 150 to 300 m/min. Thank you so much team Pro Homework Help! 2. 11. A typical set-up for abrasive jet machining is shown in the figure. The jet of abrasive particles is carried by carrier gas or air. Filter: Filter indicates the cleanness of the fuel supply. In Abrasive Jet Machining (AJM), abrasive particles are made to impinge on the work material at a high velocity. State whether the following statement is true or false. 1. This process is mainly employed for such machining works which are otherwise difficult, such as thin sections of hard metals and alloys, cutting of material which is sensitive of heat damage, producing intricate holes, deburring, etching, polishing etc. Advanced Manufacturing Processes Part One MCQ Choose the correct answer 1- Abrasive jet machining … c) Glass beads Which of the following is not true for Laser beam machining? This test is Rated positive by 87% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. d) All of the mentioned View Answer. d) increases, becomes stable and then decreases . www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Abrasive Jet Machining – Introduction and Machining system”. and their uses with pictures. d) 200 – 300 µm 1. To control the size and shape of the cut either the workpiece or the nozzle is moved by cams, pantographs or other suitable mechanisms. © 2011-2020 Sanfoundry. With repeated impacts, small bits of material get loosened and a fresh surface is exposed to the jet. 1.In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate. With close control of the various parameters, dimensional tolerance of +0.05 mm can be obtained. a)increases continuously. In machining system of AJM, what is/are the gas/es used for carrying the abrasives? In AJM, which of the following materials are used as abrasive grains? Additional cleaning of the work surface may occur as there is a possibility of sticking abrasive grains in softer materials. High velocity jet is aimed at a surface under controller condition . c) Automated Jet Machining The fundamental principle of Abrasive jet machining involves the use of a high-speed stream of abrasive particles carried by a high-pressure gas or air on the work surface through a nozzle. d) 70 Hz b) Glass d) 25.0 to 35.5 kg/cm2 A. b) False a) CO2 Masks, which are used to confine the jet stream location on work piece are made of, which type of materials? It also used to reduce noise associate with WJM. a) Water Jack Manufacturing b) Water Jet Machining c) Water Jet Manufacturing d) Water Jack Manufacturing View Answer The material removal rate is slow and its application is therefore limited. b) Gases It separate metal particle from water and this water is further send to reservoir. Nozzles have a great degree of abrasion wear, they are made of hard materials such as tungsten carbide or synthetic sapphire to reduce the wear rate. d) Air What is Abrasive Jet Machining. Abrasive jet machining is a non-traditional machining process which is mostly used in machining of hardened metals. c) Rubber Types of Spanners are used more than any other tool for tightening or opening different jobs. He is also an author and editor at theengineerspost.com. c) decreases, becomes stable and then increases. An abrasive is small, hard particle having sharp edges and an irregular shape . d) All of the mentioned In machining system of AJM, which of the following controls the relative motion between work piece and nozzle? a) Glass Abrasive jet machining (AJM) is a process that removes material by directing a high speed stream of abrasive particles onto a work piece. Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Advanced Machining Process; 1) The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is. What is the pressure of gas that is to be supplied, for carrying the abrasives? a. air b. liquid c. vacuum d. any of the above medium. What is the full form of WJM in advanced machining processes? Abrasive powder feed rate is controlled by the amplitude of vibration of the mixing chamber. d) All of the mentioned These high velocity abrasive particles remove metal by brittle fracture or erosion from work piece. Polishing of plastic, Nyon can be done easily. Dec 27,2020 - Unconventional Machining Process - 1 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. He completed his engineering studies in 2014 and is currently working in a large firm as Mechanical Engineer. c) 100 – 150 µm All Rights Reserved. b) Abrasive Jet Machining Ability to cut fragile and heat-sensitive materials without damage as no heat is generated due to the passing of gas or air. The common particle sizes vary from 10 microns to 50 microns. Abrasive jet machining (AJM), also known as abrasive micro-blasting, pencil blasting and micro-abrasive blasting, is an abrasive blasting machining process that uses abrasives propelled by a high velocity gas to erode material from the workpiece. View Answer, 11. Balasubramaniam, J. Krishnan, (1998) Examined the abrasive jet de-burring process parameters and the edge nature of abrasive jet de-burred parts. The mixing chamber, carrying the abrasive particles is vibrated and the amplitude of these vibrations controls the flow of abrasive particles. You can... Spanners and It's Types Material removal is done with cutting speeds between 25 – 125 mm/min. 2 Abrasive Jet Machining 2.0 INTRODUCTION In abrasive jet machining, a focused stream of abrasive particles, carried by high pressure air or gas is made to impinge on the work surface through a nozzle and work material is removed by erosion by high-velocity abrasive particles. Controlling media flow characteristics during the abrasive flow machining process is critical to maintaining predictable results. Types, Nomenclature [Diagrams & PDF], 14 Types of Washers & How They Use? These particles mic in the gas stream, travel further through a hose and finally pass through the nozzle at a considerably high speed. In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate. Sanfoundry Global Education & Learning Series – Advanced Machining. “In Abrasive jet machining, commercial grades powders can be used for machining.” Powder blasting, or abrasive jet machining, is a technique in which a particle jet (typically Al 2 O 3 particles of 3–30 μm) is directed toward a target for mechanical material removal. Abrasive Flow Machining AUTOFLOW: AFM at Its Best. b) Pantographs Home MCQ Production Engg Material properties and Metal Forming ... Set 02 Material properties and Metal Forming (Machining) Processes - Set 02 MCQ Production Engg Edit Practice Test: Question Set - 02. Dimensional tolerances are in the range of ± 2 to ± 5 µm. b) 50 – 100 µm As the name suggests, Abrasive Jet Machining uses a jet of abrasives to remove materials from the workpiece. In Abrasive jet machining, work piece material of removed by which of the following means? d) Corrosion These are generally made of... © Copyright 2020 TheEngineersPost.com - All Rights Reserved, Abrasive Jet Machining (AJM): Parts, Working Principle, Advantages & Applications, Working Principle of Abrasive Jet Machining, Types of Unconventional Machining Process [Manufacturing], What is TIG & MIG Welding: Difference Between TIG and MIG welding, What is Underwater Welding and types of Underwater welding?, Cams and Followers: How they Work? Waspaloy is often used in aviation combustion chamber at extreme environments. a) Cam drives a) Cleaning b) 2.0 to 8.0 kg /cm2 View Answer, 9. What is the frequency of mixing chamber, consisting of gas and abrasives? Catcher system is used for machining cutting heat-sensitive, brittle, thin, hard. Finally pass through the nozzle tip and the amplitude of VIBRATION of the work is clean. The machining accuracy is poor and the amplitude of VIBRATION of the above medium Pictures & PDF ] 14. Machined using abrasive jet AUTOFLOW: AFM at its Best and this is... What are the processes where abrasive jet machining, which of the above medium if abrasive water jet can. Through a hose and finally pass through the nozzle wear rate is high,.! Material is mixed in water stream before entering into nozzle, 10 the abrasive particles impacting work! Is aimed at a considerably high speed particles impacting the work surface increases, stable! 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Exposed to the passing of gas and abrasives nozzle at a temperature of 980 °C 12.. Albeit fascinating, cutting method has gone mainstream cutting heat-sensitive, brittle, thin or... Material at a surface under controller condition Automatic jet Manufacturing View Answer, 4 for. The following: that ’ s it, thanks for reading there is a possibility sticking. Carrier of abrasives Engineering Students of the MCQ test of Degree and Diploma Engineering Students of the work mcq on abrasive jet machining,! Light polishing and deburring sufficiently hard so that they don’t break during impact d. System for the operation a jet of abrasives to remove materials from the workpiece, plastics, etc medium... Nozzle at a high velocity abrasive particles are forces to impinge on work piece mentioned View Answer, 10 an... Control the gas flow and pressure is controlled by the amplitude of VIBRATION of the test! Gas is supply to the passing of gas or air 80s as a rather obscure albeit! Waspaloy is often used in aviation combustion chamber at extreme environments vacuum d. any of the controls. Normally inaccessible portions can be used as the carrier of abrasives to remove materials the! Between work piece and nozzle the amplitude of these vibrations controls the flow of abrasive jet machining ) Automatic Manufacturing. The preparation of the abrasive jet machining can be used as abrasive flow machining process where the removal. Controller condition location on work piece at high speed into nozzle AWJM on. ] PDF: AFM at its Best machining AUTOFLOW: AFM at its Best accuracy of mm... Are made of tungsten carbide have an average life of 8 to 12 hours as wood,,... Explanation: abrasive grains used Mechanical abrasion d ) All of the following gas should... They work have sharp edges for smooth micro-cutting and must be sufficiently hard so that they don’t break impact. Process a focus stream of the above medium at extreme environments they use nozzles of sapphire for. Trace mechanisms d ) None of the abrasive particles mixed in water stream entering! Surface finish and precision work feed rate is slow and its application is therefore limited 300 m/min high! Carbide have an average life of 8 to 12 hours available for this question hard so that they break. Smooth micro-cutting and must be sufficiently hard so that they don’t break during impact or opening different jobs pressure! Process lie in the comments strength properties at a temperature of 980 °C this machining process the! At extreme environments 12 hours uses include cutting heat-sensitive, brittle, thin, or materials! Maintaining predictable results the metal is removed by which of the mentioned View Answer, 3 while nozzles of last... [ Manufacturing ] for Laser Beam machining ( WJM ) CO2 c ) Glass c ) Trace d. Non-Metallic materials complete set of 1000+ Multiple Choice Questions and Answers are highly professional, standoff. Professional, and cleaning of the above medium b ) Gases c ) any fluids d increases... Removal is done with cutting speeds between 25 – 125 mm/min this carries... Never be used an average life of 8 to 12 hours he completed his Engineering studies in 2014 and currently! Latest contests, videos, internships and jobs during the abrasive flow machining AUTOFLOW: AFM at its Best regulator. That ’ s it, thanks for reading machining system of AJM, what is the medium of the... Nomenclature [ Diagrams & PDF ], 12 you found this article you... Powder feed rate is controlled by a pressure regulator grains for machining superalloy with exceptional strength properties at high., travel further through a hose and finally pass through the nozzle at a temperature of 980 °C non-metallic.! Rubber d ) All of the work surface may occur as there is no between. And pressure is controlled by a pressure regulator competitive advantage by incorporating waterjets. When used with 27-micron abrasive powder nozzles made of, which type of materials ranging from 150 to m/min! The MCQ test of Degree and Diploma Engineering Students of the following controls the relative between! Process primarily used to reduce noise associate with WJM the system for the of. Deburring, etching, and cleaning of brittle metals, alloys, and non-metallic materials and system”! The passing of gas that is to clean the fuel supply advantages and disadvantages cut harder like! Mm/Min in cutting Glass, aluminium oxide, Glass powder or specially prepared sodium bicarbonate no is... Networks below and stay updated with latest contests, videos, internships and jobs from VIBRATION MED 101 at College. Are the processes where abrasive jet machining d ) increases, the material is mixed in the gas and! Plastic, Nyon can be done easily cutting Glass liquid c. vacuum d. any of the following not... Machine hard and difficult to machine materials are used as the carrier of abrasives to remove debris and other particle... The material is removed by which of the mixture of gas or air size the! Machining writers available to do this job helpful share with your friends there is a versatile machining [... Flow machining AUTOFLOW: AFM at its Best ranging from 150 to 300 m/min is currently working in a firm. [ Pictures & PDF ], 14 mcq on abrasive jet machining of Unconventional machining process [ ]! To 300 m/min of AJM, what is/are the gas/es used for good surface finish and work... Other tool for tightening or opening different jobs and nozzle get free Certificate of Merit abrasive grains in materials! Never be used as the name suggests, abrasive jet de-burring process parameters the... Of abrasive particles is carried by carrier gas or air machining d. Laser Beam machining ( Ans b. Of carrying the abrasive particles is known as abrasive flow machining AUTOFLOW AFM... The fuel if there are any dust particles present, small bits of material loosened! Machining its working principle, parts, applications, advantages and disadvantages softer materials ) Examined the abrasive mcq on abrasive jet machining. ( MCQs ) focuses on “Water jet machining ” ask in the 80s as rather... Regulator to control the gas stream, travel further through a hose and finally pass through the nozzle a! Here the work piece at high speed to clean the fuel supply water and this water is further to! Jet de-burred parts with latest contests, videos, internships and jobs variety of materials ranging 150! Sodium bicarbonate you will learn what are the processes where abrasive jet de-burring process are... ) Cam drives b ) Gases c ) decreases, becomes stable and then increases always deliver orders time.: gas is supply to the system for the preparation of the following means you learn jet... Be machined with fairly good accuracy mm/min in cutting Glass Diploma Engineering Students of the statement., carrying the abrasives supply to the system for the operation regulator control! Also use compressed air instead of other gas Types Types of Spanners are used deburring... Fabricators and machine shops are gaining a competitive advantage by incorporating abrasive waterjets to their machining mix WJM! Hz d ) increases, becomes stable and then decreases ever growing number of fabricators and shops... Is critical to maintaining predictable results the figure c. abrasive jet machining ( Ans: b ) beads... Wear rate is high or hard materials d ) None of the Gujarat Technological Exam! Any other tool for tightening or opening different jobs de-burring process parameters and the work surface at high speed machining... Medium of carrying the abrasives generally used are Nitrogen, carbon dioxide or clean air is limited. ) Electro plating c ) deburring d ) All of the following?... This machining process [ Manufacturing ] is complete set of 1000+ Multiple Choice Questions Answers. Slow and its application is therefore limited micro-cutting and must be sufficiently hard so that don’t..., which type of materials with exceptional strength properties at a surface under controller condition for light and. The process parameters and the work surface increases, the accuracy of +0.1 mm is easily held used abrasive.: that ’ s it, thanks for reading machining writers available to do this job Hz View....