This lag can usually be ignored when cutting in a straight line, but becomes critical when near a corner. 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. Principle of water jet machinethis process works on the basic principle of water erosion. Abrasive water jet machining is a recent nontraditional machining process, and widely used in many industrial applications. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Part 2 deals with thermal machining processes for example, electric. Lecture series on manufacturing processes ii by prof.
In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. Nptel, online courses and certification, learn for free. The water, in this case, acts like a saw and cuts a narrow groove in the work piece material. Welcome to this session on water jet machining under the course advanced manufacturing processes. It includes detailed information to gain insight into the manufacturing processes which are new, unconventional and list out the the. As the jet approaches a corner, it becomes necessary to slow the motion down so the bottom of the jet can catch up to the top, and be perpendicular to your material. Gas may be supplied either from a compressor or a cylinder. Water jet machininga state of art p k ray, associate member with the advent of newer materials and intricate shapes of components, unconventional methods ofmatflrial removal have been developed.
In comparison to jet machining processes, it is quite suitable for cutting small and thin sheets with high cutting rates and can be applied to machine miniature objects unlike other jet machining processes such as water jet, and abrasive water jet machining methods. Introduction to nontraditional machining iit kanpur. In electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. Part 1 deals with mechanical type advanced machining processes such as ultrasonic machining, water jet machining, abrasive water jet machining. The intecg2 can cut almost any material to 8 thick at maximum cutting speeds with minimum capital outlay.
Waterjet machine can use by artist or those institute who teach art work. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. The mechanism of material removal rate is by erosion. Water jet machining working principle, advantages and. Ultrasonic, abrasive jet and abrasive water jet machining. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included. 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. On this channel you can get education and knowledge for general issues and topics. Learn about waterjets abrasive water jet cutting machine. Laser beam machining an overview sciencedirect topics. Nontraditional machining mechanical engineering, iitb.
Abrasives gas propulsion system supplies clean and dry air. In this process, a highspeed wellconcentrated water jet is used to cut the metal. During this machining process, a small portion of metals is also eroded away, leaving a small cater. 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 resources engineering larry w mays pdf download bd40bc7c7a textbook. Manufacturing knowledge menu waterjet cutting services. The two key materials used in chemical milling process are etchant and maskant. Such high velocity abrasive jet can machine almost any material. 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. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes.
Lecture 37 water jet machining and abrasive water jet youtube. Abrasive jet machining water jet machining abrasive water jet machining ultrasonic machining. May 20, 2017 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. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet. Similar case happens when ice particles are introduced as in ice jet machining. Mechanical engineering manufacturing processes ii nptel.
Material is eroded from the work piece at the impact location of the liquid jet. Waterjets going to perform almost identically in almost any material. Modern developments in waterjet cutting technology, software, and the machines that drive them has made waterjet cutting the. Speed of production with our automated process and stateofthe art, dualhead machine, we can rapidly produce parts and components from virtually any material. The method of assessment of the grinding wheel cutting ability in the. Lm37 module 9 non conventional machining version 2 me. Club scolari water resources engineering larry w mays.
Nonconventional machining, electro discharge machining, pdf, 0. Jun 29, 2017 in water jet machining wjm process, water jets alone without abrasives can be used for cutting. Water inlet about waterjet waterjet cutting is an amazing technology. Scott wirtanen, regional sales manager at jet edge, also emphasized the versatility of waterjet cutting. Learn for free, pay a small fee for exam and get a certificate. Toyota has developed a proprietary reed that allows weft insertion at low pressure, a new highefficiency valve with improved reliability and service life, a new frontinjection stretch nozzle that can be used without damaging the reed, automatic pick controllers atc, afc, apc, epc that provides abundant control devices promote stable weft insertion at high speeds, and a new tapered sub. Exercises 6 summary summary the edition addresses issues essential to modern manufacturing, ranging from traditional topics such as casting, forming, machining, and joining, to advanced topics such as the fabrication of nanomaterials. Abrasive waterjet cutting is an important shape cutting technique. Lecture 37 water jet machining and abrasive water jet. Material is vaporized by a laser, and the vapor removed by a jet of gas. A waterjet utilizes a high pressure stream of water to erode a narrow line in the stock material. 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. This methodical journey through the field is marked by drawings, graphs and tables, many of. All cnc machining begins with a part program, which is a sequential instructions or coded commands that direct the specific machine functions.
Water jet and abrasive water jet machining youtube. Oct 23, 2008 lecture series on manufacturing processes ii by prof. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Generally, it cuts with superior quality than heat cutting methods and with less cost and quality than electrical discharge machining edm. 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 cutting at davidson fabricating307 download. It is a nontraditional machining process in which no physical tool is used. Laser machining offers significant productivity advantages for rough cutoff applications. The material is placed on a grid above the water tank, which serves the purpose of disbursing and capturing the energy of the. Pdf nontraditional manufacturing processes by gary f. Sharma, department of mechanical engineering, iit roorkee.
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. Air, nitrogen and carbon dioxide to propel the abrasive particles. Waterjet machining uses a high velocity narrow jet of a liquid water to cut materials. It uses the kinetic energy of water particle to erode metal at the contact surface.
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. Edm machining process is also known as spark erosion machining. Water jet machining a state of art p k ray, associate member with the advent of newer materials and intricate shapes of components, unconventional methods ofmatflrial removal have been developed. Water jet cutting a technology on the rise october 2010 page 5 fig. Non traditional abrasive machining processesultrasonic, abrasive. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. Our water jet cutting services offer numerous benefits, including. Mar 31, 2017 it is a nontraditional machining process in which no physical tool is used.
Typical ajm applications include drilling, cutting and. In september 1999, smus school of engineering with. Scribd is the worlds largest social reading and publishing site. Compared with mechanical and waterjet cutting techniques, laser machining is slower, but some problems such as tool wear and water penetration can be avoided. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. The advantages and disadvantages of waterjet cutting. When the water stream strikes a work piece surface, the erosive force of water removes the material rapidly. 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. Non traditional abrasive machining processes nptel.
The intecg2 is based on the same design platform as the techjetx3. This methodical journey through the field is marked by drawings, graphs and tables, many of which are being published here for the first time. Waterjet cutting seminar report, ppt, pdf for mechanical. Abrasive processes grinding super finishing processes production of screw threads gear manufacturing jigs and fixtures for machine shops design and applications of jigs and fixtures non traditional manufacturing ultrasonic machining water jet machining and abrasive water jet electro chemical machining electro discharge machining ebm and lbm. Principle, equipment, operation, application, advantages and limitations of water jet. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. The accuracy and edge quality of awj is similar to laser for thin sheet metal. Basic working principle, configuration, specification and classification of. Water jet machining free download as powerpoint presentation. This will generate high heat energy and melts and vaporize metal from work piece. Cnc as it is now known, allows part machining programs to be edited and stored in the computer memory as well as permitting diagnostics and quality control functions during the actual machining. Water jet travels at velocities as high as 900 ms approximately mach 3.
Explore waterjet cutting with free download of seminar report and ppt in pdf and doc format. Okay welcome to the course on advance machining processes. 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. Wjm can be used to cut softer materials like plastic, rubber or wood. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. Paul,department of mechanical engineering, iit kharagpur. In water jet machining wjm process, water jets alone without abrasives can be used for cutting.
Abrasive waterjet cutting is essentially an accelerated erosion process. So the versatility of waterjet, both in materials and in thicknesses is unparalleled. Next chapter that we will deal with is laser beam machining that is lbm, electron beam machining evm and plasma arc cutting that is pac. By utilizing some of earths most common resources, water and stone, we are able to cut almost any material in thicknesses up to 8 200mm. Abrasive water jet machining awjm abrasive water jet machining awjm introduction abrasive water jet cutting is an extended version of water jet cutting. Version 2 me, iit kharagpur instructional objectives o list four different non conventional machining processes o differentiate between water and abrasive water jet machining o list different wjm and awjm systems o list ten different modules of awjm systems o list four applications of awjm o list three advantages of awjm o list materials that can be processed by awjm o mention functions of. In the last session, we have discussed about the abrasive. The process of water jet cutting performance waterjet pwj.
Water jet machining wjm is cne f such processes of material removal. The promise of waterjet technology for micromachining the potential benefits of using waterjet technology to produce parts or part features smaller than 300 microns are compelling. Chemical machining cm is the controlled dissolution of workpiece material etching by. Classification of metal removal processes and machine tools. Mueller and monaghan 2000 have experimentally shown that laser cutting is suitable for high feed rates up to 3000 mmmin, when compared with those obtainable by electrical discharge machining and abrasive water jet cutting. Lecture notes on modern manufacturing process dr pramod. In conventional metal machining, oxygen is usually used.
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. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Ultrahigh pressure water is fired through a ruby or diamond orifice into a mixing chamber which creates a vacuum and draws garnet sand into the water stream. Download nontraditional manufacturing processes by gary f. Developers and researchers are getting close to breaking the barriers that stand in the way of micromachining in the 150 to 200micron range and below. Non traditional abrasive machining processesultrasonic, abrasive jet and abrasive water jet machining. 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. Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Water jet cutting and abrasive water jet machining nptel. Abrasive water jet cutting of material involves the effect of a high pressure velocity jet of water with induced abrasive particle on to. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Waterjet cutting is the use of a special cutter the uses a high pressure jet stream of water.
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