Mechanical engineering lecture notesall semesterfree. Cutting of hard materials have been overcome by introducing abrasives in water in wjm also called abrasive water jet machining awjm. Basic working principle, configuration, specification and classification of machine tools. Water resources engineering nptel online videos, courses. See more ideas about books, mechanical engineering and engineering. It is one of the most famous nontraditional machining process because it is environment friendly. Ultrasonic, abrasive jet abrasive water jet machining. A study of effect of process parameters of abrasive jet. Abrasive water jet cutting is an extended version of water jet cutting.
In this process, high velocity water jet is allowed to strike. Introduction to abrasive machining and finishing processes. Part 1 deals with mechanical type advanced machining processes such as ultrasonic machining, water jet machining, abrasive water jet machining. Miyan ram 1709653 1 introduction ultrasonic machining usm is the removal of hard and brittle materials using an axially oscillating tool at ultrasonic frequencies 1820 khz during that oscillation, the abrasive slurry of b4c or sic is continuously fed into the machining zone between a soft tool brass or steel and the workpiece. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Nocnon traditional abrasive machining processes ultrasonic, abrasive jet abrasive water jet. Non traditional abrasive machining processesultrasonic, abrasive jet and abrasive. The department of mechanical engineering is one of the oldest departments at iit madras. 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. Nptel mechanical engineering video lecture online study material. Lecture notes engineering design and rapid prototyping. Experimental study on surface roughness in abrasive water.
The versatility of the abrasive water jet in cutting almost any engineering material is a very special feature of this technology. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. All cnc machining begins with a part program, which is a sequential instructions or coded commands that direct the specific machine functions. Jun 29, 2017 cutting of hard materials have been overcome by introducing abrasives in water in wjm also called abrasive water jet machining awjm. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet. It uses the kinetic energy of water particle to erode metal at the contact surface. May 12, 2017 electrochemical machining ecm is a machining process in which electrochemical process is used to remove materials from the workpiece. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. A study of effect of various process parameters on abrasive. Pdf nontraditional manufacturing processes by gary f.
Nptel mechanical engineering manufacturing processes ii. 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. It includes detailed information to gain insight into the manufacturing processes. Development of ice jet machining technology, njit, 8th american water jet conference, 1995, pp. Abrasive flow machining afm, also known as abrasive flow deburring or extrude honing, is an interior surface finishing process characterized by flowing an. Edm, ecm, ultrasonic machining, water jet machining etc, application of lasers and plasmas, energy rate calculations. Mechanical engineering indian institute of technology madras. Images courtesy of jet edge, omax and flow international. Rock excavation tools the national academies press. Almost any type of material ranging from hard brittle materials such as ceramics, metals and glass to extremely soft materials such as foam and rubbers can be cut by abrasive water jet cutting. The kinetic energy possessed by a jet increases in quadrature with the velocity. Mechanical engineering n p t e l national programme on. Abrasive jet machining ajm lecture 15 water jet and abrasive water jet machining.
Gaitonde, department of mechanical engineering, iit bombay. Water jet cutting uses the beam of water exiting the orifice to cut soft materials. Paul,department of mechanical engineering, iit kharagpur. Nptel video course mechanical engineering advanced finite elements analysis.
Download nontraditional manufacturing processes by gary f. Water jets do not heat the surface of what they machine. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining. Lecture 40 electron beam machining and laser beam machining. Water jet machining water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft materials. Water jet machining wjm is a cold machining process by using high pressure water jet for various operations such as cutting, drilling, cleaning, finishing, polishing, wire striping, removal of road stripes, etc. Water jet cutting at davidson fabricating307 download. Electrochemical machining ecm, laser beam machining lbm.
Mar 31, 2017 it is a nontraditional machining process in which no physical tool is used. Electron beam machining mechanical engineering blog. Explore waterjet cutting with free download of seminar report and ppt in pdf and doc format. Similar case happens when ice particles are introduced as in ice jet machining. Search by nptel course id, course name, lecture title, coordinator. Water jet technology uses the principle of pressurizing water to extremely high pressures, and allowing the water to escape through a very small opening called orifice or jewel. It involves the use of high velocity water jet to achieve material removal or machining. Microwave system design frank willwerth, lincoln lab prepare final presentation. These high velocity abrasive particles remove metal by brittle fracture or erosion from work piece. Abrasive jet machining ajm, also known as abrasive blasting, is a mechanical energy based non traditional machining process used to remove unwanted material from a given work piece. Lecture 37 water jet machining and abrasive water jet machining.
This will generate high heat energy and melts and vaporize metal from work piece. Lecture 10 introduction to abrasive jet machining process. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Water jet machining machining building engineering free. May 02, 2018 introduction to abrasive machining and finishing processes dr. Calibrate fuel injection nozzles to a specific flow rate. Nptel video lecture topic list created by linuxpert systems, chennai nptel video course mechanical engineering advanced manufacturing process for micro sytem fabrication subject coordinator dr.
It hosts a diverse and talented mix of students, technical staff and faculty members. Abrasive jet machining water jet machining abrasive water jet machining ultrasonic machining. Water jet cutting a technology on the rise october 2010 page 7 5. Overview of how waterjets work, what they can cut and the advantages of waterjet cutting. 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.
Lecture 37 water jet machining and abrasive water jet. Lecture 14 abrasive jet machining ajm lecture 15 water jet and abrasive water jet machining lecture 16 ultrasonic machining. 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. The aim of this study was examined the effects of abrasive water jet variables such as traverse speed, abrasive mass flow and material thickness on surface roughness in abrasive water jet cutting. In the process, workpiece is taken as anode and tool is taken as cathode. 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.
Water jet machining an overview sciencedirect topics. Shantanu bhattacharya coordinating institute iit kanpur subtitles available unavailable lab session lab session lab session lab. Abrasive jet machining has high degree of flexibility, and hence it is typically used for machining of glass and ceramic materials. Mamilla ravi sankar department of mechanical engineering indian institute of technology guwahati. Tne srmilaflty lies in concentrating a given amount of energy onto a small point to cause material removal. Ultrasonic machining effects of various inputs on the output. Part 2 deals with thermal machining processes for example, electric. Electrochemical machiningecm, laser beam machininglbm. Course design and instruction of engineering courses multidisciplinary. Nptel mechanical engineering video lecture online study. In electro chemical machining an electrolyte acts as a current carrier. Aug 10, 2016 1 abrasive jet machining ajm in abrasive jet machining ajm, abrasive particles are made to impinge on the work material at a high velocity. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet. In order to meet these challenges, a number of newer material.
Water jet cutting also called water jet machining or w jm is similar to laser beam machinll1g and electronbeam machining in one respect. Mechanical engineering lecture notesall semesterfree download. It involves the use of high ve locity water jet to. Two types of cutting let us take a closer look at the basics of the two waterjet cutting methods. It currently offers both undergraduate and postgraduate degrees. Nptel video course mechanical engineering advanced finite elements analysis subject coordinator dr. In water jet machining wjm process, water jets alone without abrasives can be used for cutting. The two electrodes workpiece and tool is immersed in an electrolyte such as nacl. Water jet and abrasive water jet machining youtube.
The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Uniformity of material is not very important to a water jet. Ultrasonic, abrasive jet and abrasive water jet machining. Non traditional abrasive machining processesultrasonic, abrasive. 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 this process, a highspeed wellconcentrated water jet is used to cut the metal. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Mar 29, 2017 abrasive jet machining is a nontraditional machining process which is mostly used in machining of hardened metals. Waterjet cutting seminar report, ppt, pdf for mechanical. Electrical discharge machining water jets are much faster than edm water jets machine has a wider variety of materials virtually any material.
Lecture series on manufacturing processes ii by prof. A study of effect of process parameters of abrasive jet machining bhaskar chandra1 department of mechanical and automobile engineering, itm university, sector 23 a gurgaon 122017. Rajesh srivastava, department of civil engineering, indian institute of technology, kanpur lecture 1 water resources engineering. Lecture 37 water jet machining and abrasive water jet youtube. Sharma, department of mechanical engineering, iit roorkee. Working, advantages, limitations, applications,laser projects, pdf.
Jul 02, 2014 lecture series on heat and mass transfer by prof. Introduction to nontraditional machining iit kanpur. In the last class, we had discussed about electrical discharge machining, ultrasonic machining etc. You dont get much closer to the spirit of engineering than in the beginnings of waterjet cutting.
Wjm can be used to cut softer materials like plastic, rubber or wood. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. Today we will learn about water jet machining and abrasive water jet machining principle, working, equipment s, application, advantages and disadvantages with its diagram. Classification of metal removal processes and machine tools. Jun 10, 2017 electro chemical machining consists of following basic elements. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. 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. Electrochemical machining ecm is a nontraditional machining process uses the principle of faraday to remove metal from the workpiece. Water jet machining is a mechanical energy based nontrad itional machining process used to cut and machine soft and nonmetallic materials. Shantanu bhattacharya, department of mechanical engineering, iit kanpur.
The electrolyte in ecm should have high electrical conductivity, low viscosity, high specific heat, chemical stability, resistance to form a passivating film on the workpiece surface, non. There is a need for machine tools and processes which can accurately and easily machine the most difficultto machine. This is an introductory level course in manufacturing process technology. Water jet and abrasive water jet machining engineering insider.
The mechanism of material removal rate is by erosion. Lecture 35 nontraditional manufacturing introduction and abrasive jet machining. Ultrasonic machining feed mechanism, head design and other aspects. Principle of water jet machinethis process works on the basic principle of water erosion. Mechanics of machining metal cutting geometry of single point cutting tools. For this purpose cuttings were performed with abrasive water jet cutting machine at six different traverse velocities 400, 600, 800, 1500, 2000 mmmin and six different pump pressures.
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