Abrasive jet machining pptpdfseminar faadooengineers. This nozzle is part of a 2 axis cnc machine that controls nozzle positioning and feedrate with respect to the workpiece. Ajm is mainly used to machine hard raw material, produce complex shape. Abrasive processes are usually expensive, but capable of tighter tolerances and better surface finish than other machining processes. Abrasive jet machining mechanical engineering students. Design and fabrication of water jet machining ijrte. Absence of heat affected zone is the main attribute of the process which highlighted it among different unconventional processes. For successful utilization of ajm process, it is necessary to analyze the following process criteria. Abrasive jet machining is an effective machining process for processing a variety of hard and brittle material. Abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation please find the attached file here. It is a process of material removal through the action of a focused stream of fluid with abrasive particles. Types of abrasive machining processes grinding honing lapping superfinishing polishing buffing abrasive water jet machining ultrasonic machining. High velocity jet is aimed at a surface under controller condition. This water jet machining process is essentially the same process as naturally occurring water erosion, but it occurs much more quickly and forcefully.
Since the process is non thermal, nonchemical and nonelectrical it creates no. Pdf nozzle design and material in abrasive 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. They are quick to set up, and offer quick turnaround on the machine. The complete monotub tek cultivation walkthrough the easiest way to grow mushrooms indoors.
Drilling of glass sheets with different thicknesses have been carried out by abrasive jet machining process ajm in order to. Parametric optimization of abrasive water jet machining of. An abrasive is small, hard particle having sharp edges and an irregular shape. Common examples include grinding, honing, and polishing. The removal occurs due to the erosive action of the particles striking the workpiece surface. Abrasive water jet machining is a recent nontraditional machining process, and widely used in many industrial applications. It has been applied to rough working such as deburring and rough finishing, machining of ceramics and electronic devices. Patel college of engineering, kherva 4sankalchand patel college of engineering, visnagar. This process is favorable for removing various deposits and coatings on metallic and ceramic surfaces. Introduction as a result of the advances in machine tools and cutting tool technology in recent decades, many of the conventional machining processes such as turning, milling and drilling have become costeffective, flexible and highthroughput manufacturing processes for producing high precision and high. The abrasive jet machining is the process of impinging the highspeed stream of abrasive particles by highpressure gas or air on the work surface through a. Abrasive jet, abrasive waterjet, and abrasive slurry jet micromachining are nontraditional microfabrication technologies that utilize high speed jets of microscopic particles to mechanically etch a wide variety of materials without generating heat or otherwise affecting material properties.
Today we will learn about abrasive jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. Krishnaiah chetty manufacturing engineering section, indian institute of technology madras, chennai 600 036, india the objective of this work is to. Seminar abrasive jet machining full report download introduction to abrasive jet machining abrasive jet machining ajm is nontraditional manufacturing process. Welcome to this session on abrasive jet machining process under the course advanced manufacturing processes. In abrasive jet machining, a high velocity jet of abrasives is made to strike the work surface for removal of material by impact erosion. Apparatus for abrasive jet machining, including equipment for storage, feeding, and control of abrasive powder in a carrier jet delivered through an upright feed tube. Flow simulation in abrasive fluid jet machining with water. In this process, the mechanical energy of water and. Studies on recharging of abrasives in abrasive water jet. Abrasive water jet machining is one of the nontraditional manufacturing processes. Advantages and limitations of abrasive jet machining ajm. Abrasive jet machining ajm is the process of material removal from a workpiece by the. Abrasive jet machining is a nontraditional machining process which is mostly used in machining of hardened metals. Chapter 26 abrasive machining and finishing operations.
Abrasive jet machining ajm, also known as abrasive microblasting, pencil blasting and microabrasive blasting, is an abrasive blasting machining process that uses abrasives propelled by a high velocity gas to erode material from the workpiece. Abrasive jet machining is a kind of blasting process and one of the most hopeful micro machining process for hard and brittle materials like glasses and ceramics. Seminar on abrasive waterjet machiningnonpollution machining machining of eccentric sheave on cnc complete project report ebook free download doc. In this paper, the optimization of process parameters of two conventional and four advanced machining processes is investigated. Surface integrity of mgbased nanocomposite produced by abrasive water jet machining awjm. Abrasive jet machining ajm utilizes a high velocity jet of abrasives to remove material from work surface by impact erosion. And has various distinct advantages over the other nontraditional cutting technologies, such as, high machining versatility, minimum stresses on the work piece, high flexibility no thermal distortion, and small cutting forces. Difference between grinding and milling the abrasive grains in the wheel are much smaller and more numerous than the teeth on a milling cutter. Abrasive jet machining on aluminum material youtube. Abrasive jet machining ajm, also known as abrasive microblasting, pencil blasting and microabrasive blasting, is an abrasive blasting machining process.
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. The schematic of abrasive water jet cutting is shown in figure 15 which is similar to water jet. Abrasive water jet awj cutting is a nonconventional machining process in which abrasive grains entrained in a high speed water jet collide with the workpiece. Studies on recharging of abrasives in abrasive water jet machining m. The abrasive jet machining is the process of impinging the highspeed stream of abrasive particles by highpressure gas or air on the work surface through a nozzle and metal removal occurs due to erosion caused by highspeed abrasive particles. This process is particularly suitable for heat sensitive materials that cannot be machined by processes that produce heat while machining. Magnetic abrasive finishingmaf seminar reportpdfppt download. They complement existing tools used for either primary or secondary operations and could. There are three major areas classified under advanced. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Introduction and abrasive jet machining notes, mechanical engineeirng, semester notes edurev notes for is made by best teachers who have written some of the best books of. Abrasive jet machining introduction abrasive water jet machine tools are suddenly being a hit in the market since they are quick to program and could make money on short runs.
Machining, water jet, modeling, kerf width, power and material removal rate. In abrasivejet machining ajm material is removed by the impact of a high velocity stream of gases and abrasive mixture focused on to the workpiece. Metal is removed due to the erosion caused by impact. Schematic of abrasive jet machining 2 satyanarayana et al. Abrasive jet machining ajm, also called abrasive micro blasting, is a manufacturing process that utilizes a highpressure air stream carrying small particles to impinge the workpiece surface for material removal and shape generation. Abrasive jet machining ajm also known as abrasive microblasting or pencil blasting is an abrasive blasting machining process that uses abrasives propelled by high velocity gas to erode material from the work piece.
Abrasive jet machine introduction abrasive jet machining ajm is a nontraditional machining process that can machine material without generating heat and shock abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation. Abrasive water jet cutting of material involves the effect of a high pressure velocity jet of water with induced abrasive particle on to. Abstract abrasive jet machining ajm is the process of material removal from a work piece by the application of a high speed stream of abrasive particles carried in a gas medium from a nozzle. Fine finishes on ballroller bearings, pistons, valves, gears, cams, etc. Surface integrity of mgbased nanocomposite produced by abrasive. Abrasive water jet processes water jet machining uf mae. Puranik, 1student me production, 2assistant professor, 1mechanical production, 1aits, rajkot, india abstract abrasive water jet machining awjm is one of.
Jet of abrasive particles is carried by carrier gas or air. Abrasive machining and finishing operations there are many situations where the processes of manufacturing weve learned about cannot produce the required dimensional accuracy andor surface finish. Abrasive jet machining a schematic layout of ajm is shown below. Seminar abrasive jet machining full report download. The high velocity stream of abrasives is generated by converting pressure energy of carrier gas or air to its kinetic energy and hence high velocity jet. Abrasive machining is a machining process where material is removed from a workpiece using a multitude of small abrasive particles. In this process chips are not formed like conventional machining processes e.
Get an overview of ajm process, mechanism, parameters, equipment, mrr, accuracy, capability, pros and cons, applications, controlling, etc. Abrasive jet machining is nontraditional manufacturing process that can make complex shapes on the surface of the hard and brittle material. It is especially used for machining super alloys, ceramics, glass and refractory materials. Abrasive jet machining ajmis a nontraditional machining process that can machine material without generating heat and shock. Abrasive water jet machine tools are suddenly being a hit in the market since they are quick to program and could make money on short runs.
What is abrasive jet machining what is abrasive jet machining. In abrasive jet machining abrasive particles are made to impinge on work material at high velocity. High velocity impact of an abrasive particle causes a tiny brittle fracture on the work surface and the flowing gases carries away the dislodged small workpiece particle. Some studies on abrasive jet machining a machining operation is basically a material removal process, where material is removed in the form of chips. Abrasivejet machining ajm modern machining process. Ajm has become a useful technique for micro machining.
The engineering and manufacturing departments are constantly on the look of edge. The velocity of the abrasive stream ejected through the nozzle is generally of the order of 330 msec. In abrasive jet machining ajm material is removed by the impact of a high velocity stream of gases and abrasive mixture focused on to the workpiece. Abrasive jet machining ajm by nishtha chouksey 0201ip121045 introduction abrasive jet machining is the material removal process where the material is removed by high velocity stream of airgas or water and abrasive mixture. From experimental studies, it has been observed that abrasive jet machining is highly suited for deburring, finishing and cutting operations, with microdrilling and machining of toughened glass also being possible. Common uses include cutting heatsensitive, brittle, thin, or.
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