Today we will learn about water jet machining and abrasive water jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. The accumulator stores the high pressure water and supplies it at any instant when it is required. When a highvelocity jet of water strikes the surface, the removal of material takes place. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. As the thin stream of water leaves the nozzle, abrasive is added to the stream and mixed. When this induced stress exceeds the ultimate shear stress of the. Abrasive water jet cutting is an extended version of water jet cutting. Working principles equipment used process parameters mrr applications. So, in brief this is the working principle of this particular process. On this channel you can get education and knowledge for general issues and topics. Additives in the form of suspended grit or other abrasive, such as garnet and aluminium oxide can assist in this process process.
Awjm abrasive water jet machiningawjm 1974 working. Working principle of awjm 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 it with the jet of high speed water. Read them thoroughly and if there exist any mistake, please do report below in the form of the comment section. 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. It is one of the types of nontraditional machining methods which produces circular, noncircular holes of very small size is awjm working principle elements of awjm system parametric analysis of awjm visualization and.
The cutter is commonly connected to a high pressure water pump where then the water is then ejected from the nozzle, cutting through the material by spraying with the jet of high speed water. Working principle awjm machine pumping system abrasive 2. Principle of water jet machinethis process works on the basic principle of water erosion. Even though the basic working principle is same for every fission power plants, thermal reactors can be classified in several categories based on the moderator and coolant fluid, namely, boiling water reactor bwr, pressurized water reactor pwr, pressurized heavywater reactor phwr, advanced gas cooled reactor agcr, etc. Unit iii electrical energy based processes 9 electric discharge machining edm working principleequipmentsprocess parameters. Abrasive water jet machining awjm is non traditional or nonconventional machining process. Introduction to abrasive water jet machining request pdf. Water jet machining working principle, advantages and. The mechanism of material removal rate is by erosion. In this process, a high speed well concentrated water jet is used to cut the metal. Water jet and abrasive water jet machining csvtu mechanical. These applications require high surface finish and. Pdf principles of abrasive water jet machining researchgate.
Water jet machining an overview sciencedirect topics. Pdf on jan 1, 1998, andreas momber and others published principles of abrasive water. This chapter provides an understanding of awjm process. Abrasive water jet machining awjm 1974 working principle a water jet and a stream of abrasives sio2, glass beads coming from two different. A pump sucks water from water reservoir and send it to intensifier. Pure water is pressurized to about 200400mpa 20004000bar and fed to.
It is used to machine thick plates of steel, al and other. Abrasive water jet machining technology uses a jet of high pressure and velocity water and abrasive slurry to cut the target material by means of erosion. Capacitors explained the basics how capacitors work working principle duration. Abrasives abrasive flow rate abrasive particle size abrasive material. Ice jet machining is an important sustainable variant of abrasive water jet machining awjm which ensures the environmentally friendly cutting, finishing, cleaning, and deburring of a variety of materials. It uses water jet working as a tool to cut the metal. Explain its principle and working with the help of a suitable diagram. Production engineering concepts pdfcasting, welding. Unit iii electrical energy based processes 8 electric discharge machining edm working principleequipmentsprocess, parameterssurface finish and mrr. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. What are the main parameters to be considered while selecting this process.
Working principles equipment used process parameters mrrvariation in techniques used applications. Process parameters of abrasive jet maching ajm are factors that influence its metal removal rate mrr in a machining process, metal removal rate mrr is the volume of metal removed from a given workpiece in unit time. This process works on the basic principle of water erosion. Process principle an abrasive jet starts out the same as a pure water jet. Process characteristics water water jet pressure during slotting water flow rate. Advanced machining processes online course video lectures. In awjm, a stream of abrasive particles is introduced in the high pressure jet of water in such a way that the momentum of the water jet is transferred to the abrasive material. In this process, a high speed wellconcentrated water jet is used to cut the metal. Abrasive water jet machining developed in 1974 to clean metal prior to surface treatment of the metal. It uses the kinetic energy of water particle to erode metal at the contact surface. Abrasive water jet machining awjm is a mechanical material removal process used to erode holes and cavities by the impact of abrasive particles of the slurry on hard and brittle materials. This process works on basic principle of water erosion.
The high pressure pump may comprise of an intensifier, prime mover, controller, and an accumulator. The following are some of the important process parameters of. Optimisation of process parameters of abrasive waterjet. Wire cut edm, also known as wire electrical discharge machining, or wire edm is a method of cutting or shaping conductive materials with a thin electrode that follows a precisely programmed path. The electrode is a thin wire, with diameters that typically range from. This high pressure water now sends through tubing system to nozzle. Awjm is typically used to machine those materials which are hard and difficult to machine. The kinetic energy is converted into pressure energy including high stresses in the work material. It sheds light on working principle and mechanism of awjm process and its process parameters, and significant benefits are discussed. Download it once and read it on your kindle device, pc, phones or tablets. Working principle in awjm, the water jet stream accelerates abrasive particles, not the water, to cause the material removal.
In awjm, the material is removed by erosion process by the action of. Highly pressurized water exiting through a nozzle gains significant kinetic energy. Working the water from the reservoir is pumped to the intensifier with the help of a pump. Intensifier increases the water pressure from 4 bar to 4000 bars. Advanced manufacturing technology kindle edition by s, ramachandran, saikia, ishanka, r, devaraj. Abrasive water jet machining awjm working principle awjm machine pumping system abrasive feed system abrasive water jet nozzle catcher process variables water water jet pressure during slotting water flow rate abrasives abrasive flow rate abrasive particle size abrasive material cuiting parameters traverse speed number of passes. Pure water jet is used to machine softer materials. Use features like bookmarks, note taking and highlighting while reading advanced manufacturing technology.
Working principle of awjm the cutter is commonly connected to a high pressure water pump where the water is then ejected from the. The working principle of wjd is similar to that of waterjet machining wjm except that wjd is conducted with lower water pressures, typically between 30 and 50 mpa up to approximately 100 mpa in exceptional cases as compared to wjm that may go up to 400 mpa. Working principle abrasive water jet machining initially starts with the pump which pressurizes water and sends to the nozzle with high pressure and is mixed with abrasive particles and is forced through a nozzle having a fine orifice which imparts a lot of pressure to the water jet mixture. In this process, a highspeed wellconcentrated water jet is used to cut the metal. Electric discharge machining edm working principleequipmentsprocess parameterssurface finish and mrr electrode tool power and control circuitstool wear dielectric flushing wire cut edm applications.
International journal of research in advent technology. Awjm combines abrasive jet machining with water jet machining wjm to create. Working principle the abrasive jet machining is a nontraditional machining process involves the application of a highspeed stream of abrasive particles assisted by the pressurized air on to the work surface through a nozzle of small diameter. Working principle of awjm the working principle of awjm is shown in fig. Pure water is supplied under pressure to about 200400mpa 20004000bar and feed to the element called cutting head through high pressure tube. Optimization of process parameters of abrasive water jet. Abrasive jet machining ajm, also known as microabrasive blasting, is a mechanical energy based unconventional machining process used to remove unwanted material from a given workpiece the process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish to hard metallic workpieces.
It implies to all the important segments of manufacturing sector from extraction of raw material to supply chain. But to cut harder materials, some abrasive particles mixed with the water for machining and it is called as awjm abrasive water jet. The high pressure pump is consist of of an intensifier, prime mover, regulator, and an accumulator. Go through each and every heading and under them a lot of data related to it was present. It is one of the most famous nontraditional machining process because it is environment friendly.
Principle of water jet machine this process works on the basic principle of water erosion. The intensifier increases the pressure of the water from 5 bars to 3000 to 4000 bar. 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. Working principle of awjm abrasive water jet machining technology uses a jet of high pressure and velocity water and abrasive slurry to cut the target material by means of erosion. Unit iii electrical energy based processes 8 electric discharge machining edm working principleequipmentsprocess parameters. In this machining process a high speed steam of water jet impinge on the work piece which removes metal from contact surface by erosion. In water jet machining wjm process, water jets alone without abrasives can be used for cutting. Other readers will always be interested in your opinion of the books youve read.
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