Processes ultrasonic, abrasive jet and abrasive water jet. Welcome to the first lecture of the online course nontraditional abrasive machining. Nocphase equilibria in materials nature and properties of materialsii. Abrasive flow machining afm semih sancar 20622852 selcuk unal 20622976 yunus kocabozdogan 20519809. Today we will learn about abrasive jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. Jan 07, 2012 presentation of abrasivejetmachining 1.
The technology of the manufacturing processes will be explained in detail. Introduction to abrasive water jet machining request pdf. As i said in the abrasive jet machining also this particular processes are very good for brittle materials rather than ductile materials. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Similar case happens when ice particles are introduced as in ice jet machining.
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. Water jet and abrasive water jet machining youtube. In abrasive jet machining material removal occurs due to the impact of high velocity air or gas stream of abrasive particles on the work piece. Lecture 11 drag finishing, icebonded abrasive finishing, pitch polishing, pad polishing lecture 12 introduction to surface texture in abrasive process lecture representation of surface roughness lecture 14 abrasive jet machining ajm lecture 15 abrasive water jet machining awjm lecture 16 ultrasonic machining usm.
The aim of this research work is to make holes on carbon fiber reinforced polymer composite material using a newly. Lecture 15 water jet and abrasive water jet machining lecture 16 ultrasonic machining process usm lecture 17 mechanism, processes variants and applications of usm. Difference between grinding and milling the abrasive grains in the wheel are much smaller and more numerous than the teeth on a milling cutter. The variables that influence the rate of metal removal and accuracy of machining in this process is. Nptel sona college of technology salem, tamil nadu a nttel a n ptel present part 2 gold elite success participation. 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. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Seminar abrasive jet machining full report download introduction to abrasive jet machining abrasive jet machining ajm is nontraditional manufacturing process. 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. Abrasivejet machining ajm modern machining process. And the material removal models for brittle and ductile materials. This process is favorable for removing various deposits and coatings on metallic and ceramic surfaces. The lectures would introduce the basic principles of material removal by impact erosion by use of abrasives against hard and brittle materials. Ajm is mainly used to machine hard raw material, produce complex shape.
The batcher makes possible the batching of abrasive from 0 to 500 gmin1. In order to cut harder materials like metals or granite, an abrasive material is. It is the material removal process where the material is removed by high velocity stream of airgas or water and abrasive mixture. 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 the process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish to hard metallic workpieces. Influence of nozzle design and process parameters on surface roughness of cfrp machined by abrasive jet.
It is employed to machine hard and brittle materials both electrically conductive and non conductive material having hardness usually greater than 40 hrc. Abrasive jet machining free download as powerpoint presentation. In awjm, abrasive particles like sand sio2, glass beads are added to the water jet to enhance its cutting ability by many folds. The process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish to hard metallic workpieces. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Okay welcome to the course on advance machining processes. An abrasive is small, hard particle having sharp edges and an irregular shape. The process was first developed in 1950s and was originally used for finishing edm surfaces. Download abrasive water jet machining process pdf at the end of the article. Abrasive water jet machining awjm is an advanced machining process and has a potential to cut a wide range of engineering materials. Modern machining methods are also named as nonconventional machining methods.
Abrasive jet machining ajm, also known as abrasive blasting, is a mechanical energy based non traditional machining process used to remove unwanted material from a given work piece. Abrasive jet machining is a nontraditional machining process which is mostly used in machining of hardened metals. Ultrasonic machining national institute of technology. Lecture video 18 of advanced machining processes course by prof vijay k. High velocity jet is aimed at a surface under controller condition. The use of abrasives to shape parts is probably the oldest material removal process. The process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish on hard work pieces. In this process chips are not formed like conventional machining processes e. Unconventional machining process need classification brief overview. Unit ii mechanical energy based processes 10 abrasive jet machining water jet machining abrasive water jet machining ultrasonic machining. 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. Lecture 37 water jet machining and abrasive water jet. These methods form a group of processes which removes excess material by various techniques involving mechanical, thermal, electrical chemical energy or combination of these energies.
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. Influence of nozzle design and process parameters on. Waves are generated using magnetostrictive effects which are further converted into mechanical vibration. The developed abrasive jet system is efficient to cut and drill brittle materials, to clean surface, to test erosion resistance of coatings, and others. Wjm can be used to cut softer materials like plastic, rubber or wood. Calibrate fuel injection nozzles to a specific flow rate. Abrasive jet machining ajm video lecture by prof a. To learn about various unconventional machining processes, the various process parameters. Abrasive jet system and its various applications in abrasive. Find powerpoint presentations and slides using the power of, find free presentations research about abrasive jet machining ppt. There is no cutting of metal with the help of metallic tool having sharp cutting edge. In abrasive jet machining process high velocity abrasives in a media of air it is impinging on the workpiece surface okay so when it is impacting on the workpiece. Miyan ram 1709653 1 introduction ultrasonic machining usm is the removal of hard and brittle materials using an axially oscillating tool at ultrasonic frequencies 1820 khz during that oscillation, the abrasive slurry of b4c or sic is continuously fed into the machining zone between a soft tool brass or steel and the workpiece.
Lecture 12 abrasive flow machining lecture mechanism of material removal in afm and variant processes in afm lecture 14 abrasive jet machining ajm lecture 15 water jet and abrasive water jet machining lecture 16 ultrasonic machining process usm lecture 17 mechanism, processes variants and applications of usm. Pdf fine abrasive water jet machining of piezoelectric. Types of abrasive machining processes grinding honing lapping superfinishing polishing buffing abrasive water jet machining ultrasonic machining. Lecture series on manufacturing processes ii by prof. Water jet cutting and abrasive water jet machining nptel.
Mar 29, 2017 today we will learn about abrasive jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. Influence of nozzle design and process parameters on surface. Air, nitrogen and carbon dioxide to propel the abrasive particles. Ultrasonic machining process usm, water jet machining. Abrasive flow machining afm, also known as abrasive flow deburring or extrude honing, is an interior surface finishing process characterized by flowing an. A study of effect of various process parameters on abrasive. Magnetostriction means the change in dimensions occurring in ferromagnetic due to an alternating magnetic field. Paul,department of mechanical engineering, iit kharagpur. Common uses include cutting heatsensitive, brittle, thin, or. Oct 23, 2008 lecture series on manufacturing processes ii by prof. The machine has one cutting head a2 for the water jet machining and for the abrasive water jet machining. Water jet machining working principle, advantages and.
We have seen its principle, advantages, disadvantages, applications, etcetera. This course will define the areas of application of nontraditional abrasive machining processes in the manufacturing industry. 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. Applications of abrasive jet machining and at last we just see a glimpse of abrasive jet polishing. Ease of programming and the jet s ability to cut almost all materials and any thickness make it suitable for all shape cutting applications except extremely hard materials. Abrasives gas propulsion system supplies clean and dry air. Their usage in automated engineering industry needs good quality in components and excellent surface finish. Fine abrasive water jet machining of piezoelectric ceramics.
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. Ultrasonic machining is mechanical machining methods. May 20, 2017 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. Ultrasonic, abrasive jet and abrasive water jet machining nptel. Abrasive jet machining ajm tutorial of advanced manufacturing processes course by prof a. Abstractcarbon fiber reinforced polymer composites find extensive applications in the areas of automotive, aircraft and aerospace, medical sciences, and electronics. This chapter provides an understanding of awjm process.
In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. Abrasive water jet machining awjm abrasive water jet machining awjm introduction abrasive water jet cutting is an extended version of water jet cutting. Abrasive machining involves material removal by the action of hard, abrasive particles. Abrasive jet micro machining ajmm is a relatively new approach to the fabrication of micro structures. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet. Non traditional abrasive machining processes ultrasonic. Gas may be supplied either from a compressor or a cylinder. Sharma, department of mechanical engineering, iit roorkee. Introduction abrasive water jet machining awjm is non traditional or nonconventional machining process.
Advantages and limitations of abrasive jet machining ajm. We can cut any difficult shapes and create holes in glass and brittle material using compressed air and abrasive particles. Nocnon traditional abrasive machining processes ultrasonic, abrasive jet abrasive water jet machining nocoperations management nocphase equilibria in materials nature and properties of materialsii. In the last session, we have discussed about the abrasive jet machining process.
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. When these highvelocity abrasive particles are impinging onto the hard work pieces, it is possible to produce plastic deformation fracturing in the hard work materials also and this process is called as abrasive water jet machining. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining financial statement analysis and reporting c ganapathy top 1 % of certified candidates course name. Nocintroduction to abrasive machining and finishing processes. Apr 06, 2016 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.
Non traditional abrasive machining processes nptel. This abrasive jet machining project is used for cutting any integrated shapes on brittle materials like glass. They are important because introduction they can be used on all types of materials ranging from soft metals to hardened steels and hard nonmetallic materials such as. Abrasive water jet cutting is an extended version of water jet cutting.
Ultrasonic machining process usm, water jet machining and. Abrasive waterjet cutting application and capability introduction abrasive waterjet cutting is gaining popularity as a means for cutting a wide variety of materials. 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. The abrasive awads 160 is conveyed by the pressure from the hopper to the cutting head. Since the process is non thermal, nonchemical and nonelectrical it creates no. Seminar abrasive jet machining full report download.
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