It involves the use of high velocity water jet to achieve material removal or machining. Abrasive water jet machining is a recent nontraditional machining process, and widely used in many industrial applications. The kinetic energy possessed by a jet increases in quadrature with the velocity. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. Material is eroded from the work piece at the impact location of the liquid jet. In order to meet these challenges, a number of newer material. The mechanism of material removal rate is by erosion. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining, mechanical engineering, prof. Water jet machining water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft materials. Kinematics of machines nptel online videos, courses. Chapters 2 through 4 discuss the properties of the tools of the process. The versatility of the abrasive water jet in cutting almost any engineering material is a very special feature of this technology. Nptel waste water engineering nptel video lectures from. This methodical journey through the field is marked by drawings, graphs and tables, many of.
Explanations are given as the book follows the development of an abrasive water jet machining process, from tool generation through to machining results, supervision and control. As in conventional machining tools, the water jet exerts machining force on the workpiece during the cutting process. Mechanical engineering manufacturing processes ii nptel. Iosr journal of mechanical and civil engineering iosrjmce eissn. Ultrasonic machining, water jet machining, abrasive water jet machining. Just like any good market, the competition is getting fiercer across all categories. Iit nptel waste water engineering civil engineering online video lectures, courses, tutorials, books civil engineering bridges, autocad, structural engineering youtube civil engineering videos. Download nontraditional manufacturing processes by gary f. Wjm can be used to cut softer materials like plastic, rubber or wood.
Laboratory investigation of soil cutting with a water jet d. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Modelling the cutting process and cutting performance in. Find water jet machine related suppliers, manufacturers, products and specifications on globalspec a trusted source of water jet machine information. All india council for technical education aicte the statutory body and a nationallevel council for technical education, under department of higher education, ministry of human resource development and nptel have signed an mou on july 24, 2018 whereby advanced nptel online certification courses are approved for faculty development programme fdp by aicte. Electron beam machining ebm and laser beam machining lbm are thermal processes considering. Principle of water jet machinethis process works on the basic principle of water erosion. Water resources engineering nptel online videos, courses. The advantages and disadvantages of waterjet cutting.
Nptel, online courses and certification, learn for free. Army corps of engineers development of variable delivery triple reciprocating plunger pump for water jet cutting m. Mechanical engineering 155 courses linuxpert systems. Free download engineering ebooks pdf ppt lecture notes. Learn about waterjets abrasive water jet cutting machine. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. Waterjet machining uses a high velocity narrow jet of a liquid water to cut materials. General purpose machine tools, construction, working principle and. Laser beam machining lbm is one of the most widely used thermal energy based noncontact type advance machining process which can be applied for almost whole range of materials. Abrasive water jet machining awjm, an important nonconventionaltype machining, is capable to overcome the limitations as regards to the machining of composites and therefore widely employed to. According to jet edge, a manufacturer of the waterjet, some other advantages include 3. See more ideas about books, mechanical engineering and engineering. 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.
In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. Introduction to civil engineering profession from indian. Rajesh srivastava, department of civil engineering, indian institute of technology, kanpur lecture 1 water resources engineering. Non traditional abrasive machining processesultrasonic, abrasive jet and abrasive. We are willing to invest in any equipment additional services. Generally, it cuts with superior quality than heat cutting methods and with less cost and quality than electrical discharge machining edm. Nptel provides elearning through online web and video courses in engineering, science and humanities streams. Abrasive waterjet machininga state of art semantic scholar. It uses the kinetic energy of water particle to erode metal at the contact surface. Advanced machining processes online course video lectures. Abrasive water jet cutting is an extended version of water jet cutting. Water is pumped at a sufficiently high pressure, 200400 mpa 2000.
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. Our cnc machining operation is set up with over 60 cnc machines including machines made by mitsubishi, dmg, okk, om, doosan and haas. Water jet machining machining building engineering. Nikodijevic university of nis, faculty of mechanical engineering university of nis, faculty of. Once the water is pressurized, it is forced through a sapphire nozzle which is composed of the natural sapphire stone due to the strength of the stone. Pdf nontraditional manufacturing processes by gary f. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet. John olsen, one of the originators of waterjet technology and currently vp of operations at omax abrasive waterjets. The mission of nptel is to enhance the quality of engineering education in the country by providing free online courseware. There are different jet or beam processes, namely abrasive jet, water jet etc. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining. Lecture 14 abrasive jet machining ajm lecture 15 abrasive water jet machining awjm lecture 16 ultrasonic machining usm lecture 17 edm, wireedm, edg, eddg, awedg lecture 18 elastic emission machining lecture 19 pmedm and ecd and elid, ech lecture 20 abrasive flow finishing. Abrasive waterjet machining awjm is one of such processes of material removal.
Nonconventional machining, introduction and abrasive jet machining, pdf. Abrasive jet and abrasive water jet machining from indian. To cut a wider range of materials from tool steel to titanium to foam, a granular typically garnet abrasive is added to the waterjet, increasing the cutting power. Water jet in water jet machining, materials are removed by the impingement of a continuous stream of highenergy water beads. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Course title faculty institute discipline type of course. Waterjet machine can use by artist or those institute who teach art work. Water jet and abrasive water jet machining youtube. Nptel mechanical engineering video lecture online study. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Equipment seymour bortz, iit research institute, chicago illinois. Manufacturers are realizing that there are virtually no limits to what waterjets are capable of cutting and.
Nptel provides elearning through online web and video courses various streams. Assembly services, cad cam support, design assistance, justintime delivery, prototype services. Usm, and jet machining processes abrasive jet machining, water jet machining, abrasive water jet machining, but these processes have their own limitations. Abrasive waterjet cutting is an important shape cutting technique. Classification of metal removal processes and machine tools. Water jet cutting a technology on the rise october 2010 page 5 fig. The liquid pressure at the impact area is approximately 60,000 psi. 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.
Tne srmilaflty lies in concentrating a given amount of energy onto a small point to cause material removal. We can measure everything we presently machine on our zeiss contura cmm. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining, etc. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. Atmatzidis department of civil engineering university of patras patras, greece f. Abrasive water jet cutting of material involves the effect of a high pressure velocity jet of water with induced abrasive particle on to. Water jet cutting also called water jet machining or w jm is similar to laser beam machinll1g and electronbeam machining in one respect.
Working principle the cutter is commonly connected to a high pressure water pump where the water is then ejected from the nozzle, cutting through the material by spraying. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Since its development, waterjet machining has seen many improvements in its design. Waterjet cutting technology is one of the fastest growing major machine tool processes in the world due to its versatility and ease of operation.
Instructional objectives i manufacturing process ii. In water jet machining wjm process, water jets alone without abrasives can be used for cutting. High speed machiningultra precision machining and hard turningultrasonic machiningabrasive jet machiningabrasive flow machiningwater jet machining electro chemical machiningelectric discharge machiningwire electric discharge machining. Ultrasonic, abrasive jet and abrasive water jet machining. In this process, a highspeed wellconcentrated water jet is used to cut the metal.
Non traditional abrasive machining processesultrasonic, abrasive. Advanced machining processes video course course outline there is a need for machine tools and processes which can accurately and easily machine the most difficultto machine materials and workpieces with intricate and accurate shapes. A waterjet utilizes a high pressure stream of water to erode a narrow line in the stock material. The material is placed on a grid above the water tank, which serves the purpose of disbursing and capturing the energy of the. Whether its a large sign for a restaurant, decorative tiles, or intricate design work, the water jet can create it in a wide variety of materials. Journal of engineering materials and technology, volumel 11, issue 2, 1989, pp 154 162. You dont get much closer to the spirit of engineering than in the beginnings of waterjet cutting. Processes ultrasonic, abrasive jet and abrasive water jet machining. Hashish, a model for abrasive water jet awj machining, transactions ofasme. Water jet cutting at davidson fabricating307 download. Abrasive jet machining project for mechanical engineering.
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