On this channel you can get education and knowledge for general issues and topics. Overview of how waterjets work, what they can cut and the advantages of waterjet cutting. Nptel provides elearning through online web and video courses various streams. Because the abrasive is added at the nozzle, through the mixing tube, it is simple to switch between water only and abrasive waterjet cutting. In addition to precise cutting of various materials as presented, many special applications i. In this process, high velocity water jet is allowed to strike. Water jet machining and abrasive water jet machining there is a distinction because a water jet machining does not contain abrasives, but it is you know the. Introduction and abrasive jet machining notes, mechanical engineeirng, semester notes edurev notes for is made by best teachers who have written some of the best books of. Water jet cutting and abrasive water jet machining nptel. Non traditional abrasive machining processes nptel. Learn about waterjets abrasive water jet cutting machine.
As in conventional machining tools, the water jet exerts machining force on the workpiece during the cutting process. Generally, it cuts with superior quality than heat cutting methods and with less cost and quality than electrical discharge machining edm. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. When the water stream strikes a work piece surface, the erosive force of water removes the material rapidly. Waterjet cutting is a nonconventional machining method that makes use of highpressure water jets with i. Abrasive waterjets are tools for cutting nearly any material into most any shape. It involves the use of high velocity water jet to achieve material removal or machining. Waterjet cutting seminar report, ppt, pdf for mechanical. To cut a wider range of material, a granular abrasive typically garnet is added to the high pressure waterjet stream, increasing the cutting power. Water jet machining working principle, advantages and.
Price control the ability to stack and rapidly cut materials and use an automated process typically delivers a lower cost than conventional machining or fabricating. It provides information on updated and advanced machine processes that are used today. Also explore the seminar topics paper on waterjet cutting with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Machining usm, water jet and abrasive water jet machining wjm and awjm, electro discharge. This great water jet cutting machine has the ability to cut just about any material with precision. Paul,department of mechanical engineering, iit kharagpur. Water jet travels at velocities as high as 900 ms approximately mach 3. Water jet machining machining building engineering.
Waterjet machining has several advantages over other methods. Lecture 37 water jet machining and abrasive water jet. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Wjm can be used to cut softer materials like plastic, rubber or wood. Images courtesy of jet edge, omax and flow international. Abrasives gas propulsion system supplies clean and dry air. A water jet cutter, also known as a water jet or waterjet, is an industrial tool capable of cutting a wide variety of materials using a very highpressure jet of water, or a mixture of water and an abrasive substance. Water jet machining free download as powerpoint presentation. Water jet machining wjm also called water jet cutting, is a nontraditional machining process in which highvelocity jet of water is used to remove materials from the surface of the workpiece. Part 1 deals with mechanical type advanced machining processes such as ultrasonic machining, water jet machining, abrasive water jet machining. Water jet in water jet machining, materials are removed by the impingement of a continuous stream of highenergy water beads.
Sharma, department of mechanical engineering, iit roorkee. Explore waterjet cutting with free download of seminar report and ppt in pdf and doc format. Water jet machining water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft materials. There are virtually no limits to what waterjets can cut, which is why companies of all kinds and sizes are realizing greater efficiencies and productivity by implementing waterjets in their. The term abrasive jet refers specifically to the use of a mixture of water and abrasive to cut hard materials such as metal or granite, while the terms pure waterjet and water. The advantages and disadvantages of waterjet cutting it seems the trends toward local sourcing have stretched much further than homes and restaurants but also into machines and craftwork. The advantages and disadvantages of waterjet cutting. While they are mostly used for 2d flat metal cutting, they are becoming increasingly used for more complex 3d shapes in 5 and 6 axis cutting.
Pdf use of water jet has been in existence for over twenty years, but it is yet to reach its full potential in the construction industry. Water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft and nonmetallic materials it involves the use of high velocity water jet to smoothly cut a soft workpiece. Abrasive waterjet cutting is an important shape cutting technique. The water, in this case, acts like a saw and cuts a narrow groove in the work piece material. The ultimate guide to waterjet the modern waterjet waterjet cutting technology is one of the fastest growing major machine tool processes in the world. The mechanism of material removal rate is by erosion. In water jet machining wjm process, water jets alone without abrasives can be used for cutting. This is to certify that the thesis entitled design and fabrication of abrasive jet machine submitted by mr. To have a better cutting for that purpose we use a liquid that is called normally water so that will have a coherent type of jet ok. Abrasive jet machining pptpdfseminar faadooengineers.
The main advantage of the technology compared to other cutting processes is. Principle of water jet machinethis process works on the basic principle of water erosion. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. Abrasive jet machining ajmis a nontraditional machining process that can machine material without generating heat and shock.
Air, nitrogen and carbon dioxide to propel the abrasive particles. Ultrasonic, abrasive jet and abrasive water jet machining nptel. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining video. Part 2 deals with thermal machining processes for example, electric. In this particular ajm what you have to note here is carrier medium is air. Advanced machining processes nptel online videos, courses iit video lectures. The purpose of this brochure is to give the reader a rough overview of waterjet cutting. Water jet cutting works for both small and large parts. In pure wjm, commercially pure water tap water is used. In this process, a highspeed wellconcentrated water jet is used to cut the metal. Abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation please find the attached file here. Listings of of companies with machines that can do. In abrasive water jet you are going to use water which is a liquid as a carrier.
In the last session, we have discussed about the abrasive. Composites materials are getting difficult to machine owing to its constituents properties, fiber orientation and relative volume fraction of matrix. Water jet and abrasive water jet machining youtube. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Abrasive water jet cutting is an extended version of water jet cutting. Water jet cutting also called water jet machining or w jm is similar to laser beam. This book is an attempt to consolidate the basic scientific studies in the machining area so that fundamental mechanics and other concepts. The waterjet cutting machine system consists of three. Processes ultrasonic, abrasive jet and abrasive water jet machining. Welcome to the first lecture of the online course nontraditional abrasive machining. The wj4x4cnc water jet from baileigh industrial is a great value for anyone looking to get into water jet cutting.
Such high velocity water jet can machine thin sheetsfoils of aluminium, leather, textile, frozen food etc. Since the process is non thermal, nonchemical and nonelectrical it creates no. Abrasive jet machining is the nonconventional material elimination method. Just like any good market, the competition is getting fiercer across all categories. You dont get much closer to the spirit of engineering than in the beginnings of waterjet cutting. A water jet cutter, also known as a water jet or water jet, is an industrial tool capable of cutting a wide variety of materials using a very highpressure jet of water, or a mixture of water and an abrasive substance. Okay welcome to the course on advance machining processes. Advanced nontraditional machining processes 303 work. Welcome to this session on water jet machining under the course advanced manufacturing processes.
Waterjet machining uses a high velocity narrow jet of a liquid water to cut materials. In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. Abrasive jet machining ajm is the process of material. The technology developed in research laboratories cannot be brought to the shop floor unless its applications are realized by. Jain advanced machining processes, authored by vijay k. This lag can usually be ignored when cutting in a straight line, but becomes critical when near a corner. Water jet cutting a technology on the rise october 2010 page 1 foreword. Material is eroded from the work piece at the impact location of the liquid jet. Manufacturing knowledge menu waterjet cutting services. Machining processes have existed for a long time but it was only after the scientific study of these processes which started some fifty years ago that major improvements in tool design, tool materials and machining techniques where brought about. The traverse speed determines the duration of surface exposure of the abrasive particles in impinging on the materials surface. It uses the kinetic energy of water particle to erode metal at the contact surface. Lecture series on manufacturing processes ii by prof.
In the waterjet machining process, water is forced through tiny nozzles under very high pressures to cut through materials such as polymers, brick, and paper. Nptel mechanical engineering manufacturing processes ii. As the jet approaches a corner, it becomes necessary to slow the. Our selection of waterjet machining systems includes cutting windows from 4 feet x 8 feet up to 12 feet x 18 feet. Jain, is a comprehensive book for students pursuing mechanical engineering. Cutting of food products by iceparticles in a waterjet. Gas may be supplied either from a compressor or a cylinder.