Unconventional machining processes, modern machining processes, and new technology. This plunger pressurizes water to a level that is proportional to the relative crosssectional areas of. Abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation. Abrasive water jet cutting is an extended version of water jet cutting. Non traditional abrasive machining processes ultrasonic, abrasive jet and. An abrasive is small, hard particle having sharp edges and an irregular shape. 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. Abrasive jet machining ajm utilizes a high velocity jet of abrasives to remove material from work surface by impact erosion.
Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. The process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish to hard metallic workpieces. 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. Abrasive jet machining is nontraditional manufacturing process that can make complex shapes on the surface of the hard and brittle material. In this ebook you will find covering the both electrical discharge machining and electrochemical machining. Water jet and abrasive water jet machining youtube. Aug 10, 2017 watch this video to know the details about the abrasive jet machining project for mechanical engineering. Get an overview of ajm process, mechanism, parameters, equipment, mrr, accuracy, capability, pros and cons, applications, controlling, etc. 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. A technique of multiphase microabrasive jet machining is proposed to fabricate microgrooves on the surface of mechanical seals. Production engineering in mechanical engineering objective questions for interview, entrance test and competitive examination freely available to download for pdf export. Advantages and disadvantages of ajm are given here. Abrasive jet machining process, parameters, equipment, mrr. Abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation please find the attached file here.
Mechanical engineering 155 courses linuxpert systems. Abrasive jet machining ajm, also known as abrasive microblasting, pencil blasting and micro abrasive blasting, is an abrasive blasting machining process that uses abrasives propelled by a high velocity gas to erode material from the workpiece. Production engineering mechanical engineering objective. Fabrication of optimal abrasive water jet machining using. In this video we have explained working of arasive jet machining process, we have seen the working principle, equipments used. Cons are limited nozzle life, not suitable for ductile materials, abrasives are not reusable. Abrasive jet machining ajm is a nontraditional machining process that can machine material without generating heat and. Increased mass flow rate of abrasive will result in a decreased velocity of fluid and there by decreases the available energy for erosion and ultimately the mrr.
His work concentrates on the requirements and challenges in preparing and designing the cutting edge micro shape using wet abrasive jet machining. Abrasive jet machining ajmis a nontraditional machining process that can machine material without generating heat and shock. The versatility of the abrasive water jet in cutting almost any engineering material is a very special feature of this technology. Nikodijevic university of nis, faculty of mechanical engineering university of nis, faculty of.
Nptel provides elearning through online web and video courses various. The variables that influence the rate of metal removal and accuracy of machining in this process is. Abrasive jet machining ajm video lecture by prof a. Some studies on abrasive jet machining a machining operation is basically a material removal process, where material is removed in the form of chips. In machining of the micro groove, the machining area is controlled by the vshaped fig. Abrasive water jet machining is a recent nontraditional machining process, and widely used in many industrial applications. Advanced machining processes by hassan abdelgaward elhofy. As the particle impacts the surface, it causes a small fracture, and the gas stream carries.
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. In this article, we will study about the abrasive jet machining in the form of short notes for gate mechanical engineering the process of abrasive jet machining ajm consists of directing a stream of fine abrasive grains mixed with compessed air or some other gas at high pressure, through a nozzle on to the surface of the work piece. In order to meet these challenges, a number of newer material. Studies on recharging of abrasives in abrasive water jet. Sharma, department of mechanical engineering, iit roorkee. Mechanical engineering department, universal group of institutes ugi, lalru, punjab. This is not an example of the work produced by our essay writing service. A multiphase microabrasive jet machining technique for.
Abrasive jet machining research 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. Let go to the descriptive details of working principle of abrasive jet machining process. And the examples of non conventional processes are abrasive jet machining ajm, electrodischarge machining edm, laser beam machining lbm, abrasive water jet machining awjm etc abrasive jet machining also called, abrasive micro blasting, it is a material removing process and material is removed by a focused steam of abrasive particles. Cutting of food products by iceparticles in a waterjet. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining. Hello everyone welcome to engineers academy topics covered. Abrasive jet micro machining ajmm is a relatively new. Productsservices for abrasive jet machining pdf abrasive jet and waterjet cutting machines 100 companies abrasive jet and waterjet cutting machines are used to cut sheet materials or remove materials from a surface by generating a focused stream of fluid mixed with abrasive particles. Abrasive jet machine introduction abrasive jet machining ajm is a nontraditional machining process that can machine material without generating heat and shock. Francis turbine usually drives an electric generator, and hence the speed must remain constant. However, there is a rapid movement away from this technology for abrasive jet systems, particularly those for shortrun and limitedproduction machine shop applications.
Abrasive jet machining engineering360 engineering search. Since the total head available is constant it is not desirable to control flow rate by a valve due to hydraulic losses. May 24, 2014 let go to the descriptive details of working principle of abrasive jet machining process. It is a process of material removal through the action of a focused stream of fluid with abrasive particles. Mechanical engineering manufacturing processes ii nptel. The particles are directed towards the focus of machining less than 1mm from the tip 3. Abrasive jet machining is the nonconventional material elimination method.
Gas may be supplied either from a compressor or a cylinder. In this ajm system, a focused stream of abrasive grains of al2o3 or sic carried by high pressure gas or air at a high velocity is made to impinge on the work surface through a nozzle of 0. It is the material removal process where the material is removed by high velocity stream of airgas or water and abrasive mixture. 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. Abrasive jet machining project for mechanical engineering. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet. Pdf nozzle design and material in abrasive jet machining. This document is highly rated by students and has been viewed 450 times. Mechanism, processes variants and applications of usm.
Abrasive jet, abrasive waterjet, and abrasive slurry jet micro machining 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. Introduction to abrasive machining and finishing processes video. Progress in the modeling of abrasive jet machining. Most existing models for abrasive jet machining ajm are based on erosion models for either ductile or brittle materials. Common uses include cutting heatsensitive, brittle, thin, or hard materials. Short notes on abrasive jet machining for gate mechanical. The surface texture such as microdimples or microgrooves on the surface of mechanical seals can help to improve the tribological and sealing properties. 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.
Ajm has become a useful technique for micro machining. Specifically it is used to cut intricate shapes or form specific edge. This paper discusses the effects of various input parameters in abrasive jet. Abrasive jet machining mechanical engineering students. Nocnon traditional abrasive machining processes ultrasonic, abrasive jet abrasive. Classification of metal removal processes and machine tools. They complement existing tools used for either primary or secondary operations and could. The vertical flow from the jet nozzle changes to horizontal flow around the stagnation area. In a machining operation, the output parameter is achieved by controlling various input parameters. 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. Part 1 deals with mechanical type advanced machining processes such as ultrasonic machining, water jet machining, abrasive water. High velocity jet is aimed at a surface under controller condition.
Nontraditional and hybrid machining processes by hassan abdelgaward elhofy book is a good reference for both nontraditional and hybrid machining processes. Abrasive water jet cutting of material involves the effect of a high pressure velocity jet of water with induced abrasive particle on to. Abrasive jet machining pptpdfseminar seminar on abrasive waterjet machiningnonpollution machining machining of eccentric sheave on cnc complete project report ebook free download doc. Since the process is non thermal, nonchemical and nonelectrical it creates no. Manufacturing processes i manufacturing processes i lecture series on manufacturing processes i by prof. Abrasive jet machining effect of mixing ratio on material removal ratemrr. It is an efficient machining method for processing a range of hard and brittle objects and has a variety of. It deals with the latest machining processes named as advanced machining processes. Working principle of abrasive jet machining ajm process. Watch this video to know the details about the abrasive jet machining project for mechanical engineering. Abrasivejet machining ajm modern machining process.
Mamilla ravi sankar department of mechanical engineering indian institute of technology guwahati. Manufacturing engineering section, indian institute of technology madras, chennai 600 036, india the objective of this work is to. The jet nozzle is traversed above the exposed area with supplying the abrasive slurry at a low pressure. In his work wet abrasive jet machining with a robot guided system allows to prepare local tool areas and to realize a specific design of the cutting edge, as well as advantageous surface qualities. This work reports recent progress in the modeling of erosion processes for.
International journal of modern engineering research ijmer. Introduction to abrasive machining and finishing processes mechanical engineering instructor name. Abrasive jet machining ajm, also known as micro abrasive blasting, is a mechanical energy based unconventional machining process used to remove unwanted material from a given workpiece. This classification imposes some limitations, because most materials are neither absolutely ductile nor absolutely brittle, but lay within the continuous spectrum between those two idealizations. This technique takes the advantages of the current microabrasive jet machining and can recycle the. Historically, water jet and abrasive jet cutting tables have used traditional cnc control systems employing the familiar machine tool gcode. According to nature of energy employed in machining, nontraditional machining processes are further classified into the following groups. Mechanical processes like ultrasonic machining, abrasive jet machining, water jet machining, abrasive water jet machining, etc. Non conventional machining, introduction and abrasive jet machining, pdf, 0. Air, nitrogen and carbon dioxide to propel the abrasive particles.
Nonconventional machining, introduction and abrasive jet machining, pdf, 0. Introduction and abrasive jet machining notes, mechanical engineeirng, semester notes edurev is made by best teachers of. Introduction to abrasive machining and finishing processes dr. Introduction to abrasive machining and finishing processes. This course will define the areas of application of traditional as well as nontraditional abrasive finishing processes in the manufacturing industry. 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. 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. One of the strategic areas where robotic awjm is finding critical application is dismantling of nuclear plants. Sep 11, 2015 abrasive jet machining effect of exit gas velocity and abrasive particle density. Lect 36 unconventional machining process abrasive jet. Abrasive jet machining effect of exit gas velocity and abrasive particle density.
Indian institute of technology madras and nptel via swayam. Diesinker edm and wire cut electric discharge machining wedm. As the particles impact the surface, they fracture off other particles 4. Manufacturing processes i nptel online videos, courses. Nptel provides elearning through online web and video courses various streams. Advantages and limitations of abrasive jet machining ajm. 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. It has been applied to rough working such as deburring and rough finishing, machining of ceramics and electronic devices. Course design and instruction of engineering courses multidisciplinary. Working principle of abrasive jet machining ajm process in.