Wjm can be used to cut softer materials like plastic, rubber or wood. Learn about waterjets abrasive water jet cutting machine. Abrasives gas propulsion system supplies clean and dry air. 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. Mechanical engineering manufacturing processes ii nptel. Non traditional abrasive machining processes ultrasonic, abrasive. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining. The pressure of the water stream, or jet, is created by a speciallydesigned pump, and it is usually in the range of 50,000 to 60,000 pounds per square inch psi. So, that we all see in this one introduction abrasive jet machining is a mechanical material. Abrasive water jet machining is a recent nontraditional machining process, and widely used in many industrial applications.
It involves the use of high velocity water jet to smoothly cut a soft workpiece. Water jet cutting and abrasive water jet machining nptel. Such high pressure water jet cutting systems are limited to use on very strong materials. Nocphase equilibria in materials nature and properties of materialsii. Abrasive waterjet machining awjm is one of the most recently developed mechanical type. Waterjet cutting technology water jet cutting machine india. The abrasive does the cutting through a mechanical sawing action, leaving a smooth, precision cut surface. Jet is proud to offer a full line of metal working tools and machinery. 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. Welcome to this session on water jet machining under the course advanced manufacturing processes. View water jet machining ppts online, safely and virusfree. If you are not able to download lectures due to bandwidth constraints, you can obtain the courses in dvds by paying a nominal fee to cover the cost of storage media and distribution.
Water resources engineering nptel online videos, courses iit video lectures. Water jet and abrasive water jet machining mech4study. When the water stream strikes a work piece surface, the erosive force of water removes the material rapidly. Water jet machining working principle, advantages and. 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. Read articles and industry papers on waterjet cutting, waterjet machines, waterjet innovations, 5axis waterjet machining and more. Application of pure water jet machining for improving surface finish of parts fabricated by abrasive water jet machining 5362 lateral distance between the single kerfpasses is the main parameter in this process laurinat et al. Abrasive water jet cutting of material involves the effect of a high pressure velocity jet of water with induced abrasive particle on to materials to be cut. As in conventional machining tools, the water jet exerts machining force on the workpiece during the cutting process. Ultrasonic, abrasive jet abrasive water jet machining. 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. Introduction to water jet machining process advantages and disadvantages introduction to water jet machining. The 3 principles of abrasive water jet machining techmoon.
We have seen its principle, advantages, disadvantages, applications, etcetera. Omax waterjet cutting machine manufacturer abrasive. On this channel you can get education and knowledge for general issues and topics. In water jet machining, high velocity water jet is allowed to strike a given workpiece. Waterjet is the most versatile process, because it. It has the ability to cut almost any material while maintaining high precision. Lecture 15 water jet and abrasive water jet machining lecture 16 ultrasonic machining process usm lecture 17 mechanism, processes variants and applications of usm. Water jet machining equipment can produce water jets with pressures between 30,000 and 90,000 psi, and some models can produce up to 120,000 psi jets. During mixing process, the abrasive particles are gradually accelerated due to transfer of momentum from the water phase to abrasive phase and when the jet. Water jet travels at velocities as high as 900 ms approximately mach 3.
Sharma, department of mechanical engineering, iit roorkee. 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. Such high velocity abrasive jet can machine almost any material. Water jet machining an overview sciencedirect topics. Water jet cutting uses an ultrahigh pressure stream of water to carry an abrasive grit. Water jet machining wjm called hydrodynamic or equipment may be used for applications similar to the laser. Water resources engineering nptel online videos, courses. To form a waterjet, the water must be pressurized to ultrahigh pressures uhp, reaching 650 mpa, and then released across a small size orifice 0. Water jet cutting a technology on the rise october 2010 page 5 fig. The waterjet cutting machine system consists of three. The material is placed on a grid above the water tank, which serves the purpose of disbursing and capturing the energy of the. Machine tools were among the innovations that made mass production and interchangeable parts realities in the 19th century. Water jet cutting machines water jet cutting systems.
A highvelocity jet is formed with capabilities of cutting soft materials such as plastics, leather, carpets, and fabrics. Waterjet is the enviromentally friendly technology used to cut accurately any materials with ultra high pressure water up to 6. The water, in this case, acts like a saw and cuts a narrow groove in the work. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Lecture 37 water jet machining and abrasive water jet.
The stronger and thicker the material, the more powerful the water jet must be in order to cut through it. Gas may be supplied either from a compressor or a cylinder. Air, nitrogen and carbon dioxide to propel the abrasive particles. Water jet machining free download as powerpoint presentation. In the last session, we have discussed about the abrasive. Listed are some variety of industry and material specific water jet applications that make excellent use of waterjet cutting technology. These machines are produced only by few companies and are used for the manufacture of light and medium weight fabrics with standard characteristics and in waterrepellent fiber materials, primarily multifilament synthetic yarns.
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. Waterjet machine can use by artist or those institute who teach art work. The lectures would introduce to the students the basic principles of material removal by impact erosion by use of abrasives against hard and the brittle materials. Water jet and abrasive water jet machining youtube. To cut a wider range of material, a granular abrasive typically garnet is added to the high pressure waterjet stream, increasing the cutting power. Nptel, online courses and certification, learn for free. Non traditional abrasive machining processesultrasonic, abrasive. Introduction to water jet machining process advantages.
Water jet machine widely used for cutting plastic, cloth, rubber. With use, the slats become jagged with sharp points figure 2. In addition to no heataffected zone, the benefits and applications for waterjet technology are limitless and everexpanding. Paul,department of mechanical engineering, iit kharagpur. Okay welcome to the course on advance machining processes. During this process, its kinetic energy is converted to pressure energy. Abrasive waterjet machining awjm is one of the most recently developed mechanical type unconventional. Waterjet cutting compared to other technologies flow.
The problems are minimization of surface roughness for abrasive water jet machining awjm, electrodischarge machining edm, microturning and. Machine tool, any stationary powerdriven machine that is used to shape or form parts made of metal or other materials. Non traditional abrasive machining processesultrasonic, abrasive jet and abrasive water jet machining. Abrasive water jet machining developed in 1974 to clean metal prior to surface treatment of the metal. Modelling the cutting process and cutting performance in abrasive water jet machining using geneticfuzzy approach. Nptel material is available for free on nptel website. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. Abrasive water jet machining awjm is non traditional or nonconventional machining process. Water jet in water jet machining, materials are removed by the impingement of a continuous stream of highenergy water beads. It uses water jet working as a tool to cut the metal. Modelling the cutting process and cutting performance in abrasive. Nptel mechanical engineering video lecture online study.
It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. Principle and basic process parameters of water jet machining. 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. Modelling the cutting process and cutting performance in abrasive water jet machining using. In these processes, the mechanical energy of water and abrasive phases are used to achieve material removal or machining. Waterjets can cut any solid material including stone, tile, glass, metal, foam, rubber, plastic, and food.
Lecture 37 water jet machining and abrasive water jet youtube. In addition to these ongoing efforts, we have invested in internal maintenance training for our existing water jet cutting systems. Lecture series on manufacturing processes ii by prof. When compared with plasma, laser, and edm waterjet cutting has distinct advantages. The mechanism of material removal rate is by erosion. Non traditional abrasive machining processes ultrasonic. The most common source of cuts in waterjet cutting is not the jet, but the slats that support the material. The 3 principles of abrasive water jet machining september 8, 2014 by terrance hamilton 1 comment abrasive water jets like, for example, our techmoon cnc machines are stateoftheart devices that can cut anything from stone, wood and glass to stainless steel. 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. Carefully load and unload materialespecially, heavy plateto prevent pinching body parts between the plate and jagged slats.
Advanced machining processes online course video lectures. Waterjet cutting is a nonconventional machining method that makes use of highpressure water jets with i. The water, in this case, acts like a saw and cuts a narrow groove in the work piece material. In water jet machining wjm process, water jets alone without abrasives can be used for cutting. This course will define the areas of application of nontraditional abrasive machining processes in the manufacturing industry. Today we will learn about water jet machining and abrasive water jet machining principle, working, equipments, application, advantages and disadvantages with its diagram.
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