Jul 23, 2017 abrasive jet machining this vedio explains simply how the abrasive jet machining works,working principles. The water passes through flow regulator valve which regulates the flow. There are two types of water jet cutting processes. Abrasive water jet machining is a nontraditional machining process, which makes use of the principles of abrasive jet machining ajm and water jet machining wjm. Awjm abrasive water jet machiningawjm working principle. The beam of water accelerates abrasive particles to speeds fast enough to cut through much harder materials. Principle, working, equipments, application, advantages and disadvantages. The fully capable and programmable cnc based system combines highly pressurized water and an abrasive substance allowing for extremely complex shapes to be cut on flat glass materials with a dimensional precision. View notes awjm from me 688 at haldia institute of technology. The term abrasive jet refers specifically to the use of a mixture of water and abrasive. Abrasive cutting is typically used when cutting materials such as stainless steel, aluminium, stone, ceramics and composites. As the thin stream of water leaves the nozzle, abrasive is added to the stream and mixed.
Process principle an abrasive jet starts out the same as a pure water jet. Jan 02, 2020 an abrasive gun is used to supply an abrasive slurry, which is a mixture of abrasive grain and the water in between toolworkpiece interface under a definite pressure. Abrasive water jet machining awjm process is one of the nontraditional machining processes that have been used extensively in various industry related applications. Pdf principles of abrasive water jet machining researchgate. Awjm is a nonconventional machining process where material is removed by impact erosion of high pressure high velocity of water and entrained high velocity of grit abrasives on a work piece 5. It involves the use of high velocity water jet to smoothly cut a soft workpiece. The force of the water and abrasive erodes the material, even if the. Abrasive jet machining is a nontraditional machining process which is mostly used in machining of hardened metals. The best book on the materials science and mechanics of abrasives technology in print anywhere. Belt life, surface finish special operations and the future electrochemical grinding, abrasive jet machining, abrasive water jet cutting, deburring, lapping, polishing, burr technology, abrasive flow machining, ultrasonic cleaning, superfinish lapping, free. A waterjet utilizes a high pressure stream of water to erode a narrow line in the stock material. Wjm can be used to cut softer materials like plastic, rubber or wood. Computational analysis and optimization of two phase water. Abrasive water jet cutting is using high pressure water being forced through a small hole onto a concentrated area to cut materials.
Knowledge of these hazards and proper protective measures are necessary for safe operation. In abrasive jet machining, a focused stream of abrasive particles, carried by high pressure air or gas is made to impinge on the work surface through a nozzle and the work material is made to impinge on the work surface through a nozzle and work material is removed by erosion by high velocity abrasive particles. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. 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. Principles of abrasive water jet machining icons 52,536. Download all the principles of abrasive water jet machining icons you need. It is used for machining or cutting reinforced plastic. When a highvelocity jet of water strikes the surface, the removal of material takes place. 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. Principles of abrasive water jet machining andreas w.
The most thorough and comprehensive book ever published of abrasives, a landmark publication in abrasives technology with lots of technical information without the formulas o. In these processes, the mechanical energy of water and abrasive phases are used to achieve material removal or machining. The rotary axis is for machining axisymmetrical features on workpieces. The input of the high pressure pump accustream a6030 is 22 kw, the working pressure is 500 to 3800 bar, maximum 4140 bar. This technology is less sensitive to material properties as. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. The purity in the water stream prevents damage to finished components even during detailed 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. 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. Abrasive water jet machining developed in 1974 to clean metal prior to surface treatment of the metal. Its industrial use depends on its cost effectiveness. The annular backflow region surrounding the incoming jet presents a highly turbulent and chaotic flow situation. The erosion process of abrasive waterjet awj on target material is very complicated and a complete clear understanding about material removal mechanisms in awj machining has not been obtained. Learn about waterjets abrasive water jet cutting machine.
This article presents an overview of the hazards and ways to ensure safety. In the abrasive water jet machining, the water jet stream accelerates abrasive particles and those particles erode the material. Water jet machining working principle, advantages and. Mar 29, 2017 abrasive jet machining is a nontraditional machining process which is mostly used in machining of hardened metals. Milton shaw who has compiled what researchers know about abrasive processing. Water jet machining employs the principle of increasing the pressure of water and to subsequently discharge the water through an orifice. Abrasive jet nozzle there is a difference between a pure water jet nozzle and an abrasive jet nozzle. Pdf the term highspeed water jet includes several modifications of jets. Today we will learn about water jet machining and abrasive water jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. A pump sucks water from the water reservoir and sends it to intensifier. Abrasive water jet machining awjm is becoming more widely used. Abrasive water jet machining makes use of the principles of both abrasive jet machining and water jet machining.
Machining of particulate reinforced mmcs using conventional machining processes such as turning, drilling, etc. Optimization of abrasive water jet machining process parameters using taguchi grey relational analysis tgra 83 conclude that the performance characteristics of the awjm process namely hydraulic pressure, abrasive mass flow rate, standoff distance and traverse rate are improved together by using gra. Abrasive water jet machining awjm is non traditional or nonconventional machining process. Abrasive jet machining is used to cut hard metal like stainless steel, titanium, inconel etc. Abrasive waterjets are often used to cut metals, like steel and aluminum. It sends water to an accumulator which store some pressurize water. An abrasive gun is used to supply an abrasive slurry, which is a mixture of abrasive grain and the water in between toolworkpiece interface under a definite pressure. 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. The orifice, also called the water nozzle, is a part of an awj cutting head as shown. Related icons include water icons, of icons, drink icons, bottle icons, drop icons, sea icons, glass icons, beverage icons, pipe icons, ocean icons. The versatility of the abrasive water jet in cutting almost any engineering material is a very special feature of this technology. It is one of the most famous nontraditional machining process because it is environment friendly. Similar case happens when ice particles are introduced as in ice jet machining. The machine has one cutting head a2 for the water jet machining and for the abrasive water jet machining.
Studies on recharging of abrasives in abrasive water jet machining m. Get an overview of ajm process, mechanism, parameters, equipment, mrr, accuracy, capability, pros and cons, applications, controlling, etc. When the ac power is supplied with high frequency, the transducer starts vibrating longitudinally by magnetostriction, which is transmitted to the penetrating tool through a. Intensifier increases the water pressure from 4 bar to 4000 bars. In general, the overall cost of an awjm system still remains high compared to that of traditional machining techniques, despite a move by the industry to reduce the equipment cost. A machinability study of mild steel using abrasive water jet. This process combines the principles of water jet machining wjm and abrasive jet machining ajm. Because the abrasive is added at the nozzle, it is simple to switch between water only and abrasive waterjet cutting. In this process, a highspeed wellconcentrated water jet is used to cut the metal. Water is pumped at a sufficiently high pressure, 200400 mpa 2000. Choose between 52536 principles of abrasive water jet machining icons in both vector svg and png format. Krishnaiah chetty manufacturing engineering section, indian institute of technology madras, chennai 600 036, india the objective of this work is to. It uses the kinetic energy of water particle to erode metal at the contact surface.
Experiment study on abrasive waterjet machining mechanisms. Abrasive jet machining this vedio explains simply how the abrasive jet machining works,working principles. 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. Principle of water jet machinethis process works on the basic principle of water erosion. Pure water jet is used to machine softer materials. Abrasive jet machining ajm utilizes a high velocity jet of abrasives to remove material from work surface by impact erosion. Abrasive water jet machining was introduced to manufacturing ten years ago and. Process principle the mixing of abrasive particles in water jet is in. The ejected stream is a churning mixture of water and air, laden with both shattered and intact abrasive particles as well as fragments of removed material. Abrasive water jet machining was introduced to manufacturing ten years ago and has been increasingly used for treating hardto machine and multilayered materials and as an alternative tool for milling, turning, drilling and polishing. Apr 01, 2017 today we will learn about water jet machining and abrasive water jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. 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. With the abrasive jet nozzle, an opening in the side of the nozzle allows for the introduction of the abrasive to the highpressure water stream. Abrasive water jet awj machined surfaces exhibit the texture typical of.
The 3 principles of abrasive water jet machining techmoon. In this machining process a focus stream of abrasive particles are forces to impinge on work piece at high velocity. Waterjet machine can use by artist or those institute who teach art work. This flexibility greatly enhances the versatility of a waterjet machine, as it can easily switch from cutting. Momber 1 subdivides highspeed water jets as shown in figure. It uses water jet working as a tool to cut the metal. Water jet cutting a technology on the rise october 2010 page 5 fig. Abrasive water jet cutting of borosilicate glass core. Abstract abrasive water jet awj machining has found to been a most promising candidate in the field of advance machining technology and have considerable distant advantages over other machining technologies such as no thermal consequence, high flexibility and machining versatility, and small cutting forces. In water jet machining, high velocity water jet is allowed to strike a given workpiece. These high velocity abrasive particles remove metal by brittle fracture or erosion from work piece.
Principles of abrasive water jet machining springerlink. The two are mixed in a mixing tube and then exit the nozzle. Abrasive jet machining process, parameters, equipment, mrr. The principles of abrasive water jet cutting are similar to pure water jet cutting, but within the nozzle is a mixing chamber where the garnet is introduced. As is the case with all industrial machinery, waterjet machines have certain inherent hazards that go beyond the obvious cuts.
In this paper, an experiment study on awj machining mechanisms of brittle materials is introduced so as to understand the actions of water jet and abrasive particle in material removal process and some. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Pdf on jan 1, 1998, andreas momber and others published principles of abrasive water jet machining find, read and cite all the research you need on researchgate. Abrasive water jet machining was introduced to manufacturing ten years ago and has been increasingly used for treating hardtomachine and multilayered. This highpressure water now sends through tubing system to the nozzle. In order to cut harder materials like metals or granite, an abrasive material is mixed in the water.
During this process, its kinetic energy is converted to pressure energy. Investigation on glassepoxy composite surfaces machined. Abrasive water jet machining awjm working principle elements of awjm system parametric analysis of awjm visualization and. May 20, 2017 when an abrasive material is used in the water for the machining process than it is called abrasive water jet machining awjm. The force of the water and abrasive erodes the material, even if the jet is stationary which is how the material is initially pierced. Investigation on glassepoxy composite surfaces machined by. Because pure waterjet cutting uses only water, its more suitable for delicate materials, such as felts and foams. A w and kovacevic r 1998 principles of abrasive water jet machining london. The abrasive jet machining process involves the application of a highspeed stream of abrasive particles assisted by the pressurized air on. Studies on recharging of abrasives in abrasive water jet. The table is connected with the catcher of the water jet remaining energy. The material is placed on a grid above the water tank, which serves the purpose of disbursing and capturing the energy of the.