It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Process parameter optimization of cnc abrasive water jet machine for titanium ti 6al 4v. This process incurs relatively higher initial investment, maintenance and operating costs. Selection of process parameters in abrasive waterjet. It consists of a mixing chamber, gas filter, pressure gauge, regulator, and the nozzle.
Abrasive jet machining working, advantages, disadvantages. Various experiments were conducted to assess the influence of abrasive jet machine. Hence to overcome the difficulties in machining of hastelloy by conventional machining process, abrasive jet machining is employed. Abrasive jet machining ajm is the process of material removal from a work piece. Martins engineering college, secunderabad, india 2 department of mechanical engineering, jnt university, hyderabad, india corresponding author. Schematic of abrasive jet machining 2 satyanarayana et al. Three process parameters in conventional machining are i cutting speed n or cutting velocity vc, ii feed rate s and iii depth of cut t. Pdf abrasive jet machining ajm also known as abrasive microblasting or pencil blasting is an abrasive blasting machining process that uses. Therefore optimum choice of the process parameters is essential for. High velocity jet is aimed at a surface under controller condition. The filtered gas at a pressure of 2 to 8 kgfcm 2 is supplied to the mixing chamber containing the abrasive powder and. Parametric optimization of abrasive water jet machining of.
The selected responses are material removal rate mrr and surface roughness sr. Effect of process parameters on abrasive contamination. Puranik, 1student me production, 2assistant professor, 1mechanical production, 1aits, rajkot, india abstract abrasive water jet machining awjm is one of. Process parameter optimization of cnc abrasive water jet. Nikodijevic university of nis, faculty of mechanical engineering university of nis, faculty of. Various abrasive particles used for machining in abrasive jet machining. Process parameters of abrasive jet machining ajm are factors that influence its metal.
Optimization of process parameters of abrasive jet. 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. Keywords abrasive jet machining, drilling, process parameters, kerf taper. The figure shown is the above abrasive jet machining. Metal removal and kerf analysis in abrasive jet drilling of. Jet of abrasive particles is carried by carrier gas or air. Water jet machining wjm is a cold machining process by using high pressure water jet for various operations such as cutting, drilling, cleaning, finishing, polishing, wire striping, removal of road stripes, etc.
The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Abrasive machining involves material removal by the action of hard, abrasive particles. The jet of abrasive particles is carried by carrier gas or air. A study of effect of various process parameters on. Process characteristics of abrasive jet machining ijert. Sreenivasa rao2 1department of mechanical engineering, st.
The high velocity stream of abrasive is generated by converting the pressure energy of the carrier gas or air to its kinetic energy and hence high velocity jet. In abrasive jet machining abrasive particles are made to impinge on work material at high velocity. Similar case happens when ice particles are introduced as in ice jet machining. Abrasive water jet machining is that manner of machining process which is known as nontraditional type machining and belongs to mechanical group of nontraditional processes. In the area of grit blasting, it is well known that microscopically small abrasive debris gets trapped on the surface, and due to impact the grits might cause the surface to fracture and a fraction of it to be embedded. The abrasive gas mixture, jet pressure, abrasive particle size and hardness are mainly responsible for the metal removal rate. List of process parameters in machining cutting velocity. During abrasive jet machining process, material from a surface of workpiece is removed due to impact erosive action of finegrained abrasive particles impacting at high velocity 200400 ms. Optimization of process parameter in abrasive water jet machining for machining harsh a. During ajm, the influence of process parameters on machining characteristics were studied using taguchi method. Seminar abrasive jet machining full report download. Abrasive jet machining process, parameters, equipment, mrr abrasive jet machining ajm is one of the advanced machining processes mechanical energy based where a high velocity jet of abrasives is utilized to remove material from work surface by impact erosion. Abrasive waterjet cutting is one of the nontraditional machining processes capable of cutting wide range of hardtocut materials.
Re use of abrasives is not recommended since the cutting ability of abrasive decrease after the usage and also the contamination of wear materials clogging the nozzle and the cutting unit orifice. Optimization of process parameters of abrasive water jet. The metal removal rate for this type of process is usually 16mm3 min in cutting glass and the velocity of the jet ranges from 150 to 300 meters per minute. Optimization of process parameters in abrasive water jet. Student production mechanical, ldrpitr, gujarat, india 2lecturer, mechanical engineering, ldrpitr, gujarat, india abstract abrasive water jet machining awjm is the nontraditional material removal process. Review paper on process parameters of abrasive water jet. Water jet machining an overview sciencedirect topics. Awjm combines abrasive jet machining with water jet machining wjm to create. The chosen process parameters are standoff distance, traverse speed and abrasive flow rate. Abrasive jet machining and study of process parameters. The same problem appears in abrasive water jet awj machining especially in the socalled deformation wear zone or striation zone. This process is mainly employed for such machining works which are otherwise difficult, such as thin sections of hard metals and alloys, cutting of material which is sensitive of heat damage, producing intricate holes, deburring, etching, polishing etc. Puranik 1student me production, 2assistant professor, 1mechanical production, 1aits, rajkot, india abstract abrasive water jet machining awjm is one of the recent nontraditional methods that have been used in. A machining operation is basically termed a material removal process, where material is removed in the form of chips.
It is widely used in fabrication industry to machine the materials like aluminum, mild steel, copper, glass, titanium, hard rock material. Pdf process parameters of abrasive jet machining researchgate. As the abrasive particle impacts on the surface, it causes a tiny fracture, and the gas stream carries both the abrasive particles and the fractured wear particles away. 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. The traditional methods used for machining processes like cutting and deburring can be efficiently replaced by abrasive jet machine. 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 on aluminum material youtube. To develop a hybrid process of abrasive jet machining ajm and electrical discharge machining edm, the effects of the hybrid process parameters on machining performance were comprehensively. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. The high velocity stream of abrasive is generated by converting the pressure energy of the carrier gas or.
Pdf a study of effect of process parameters of abrasive. 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. Optimization of process parameters of abrasive jet machining on. Influence of nozzle design and process parameters on. Effects of process parameters on responses during machining ti6al4v alloy using abrasive water jet machining 1dhaval sangani,2 p. Optimization of process parameters in abrasive jet. Design and manufacturing of abrasive jet machine for drilling.
Introduction abrasive water jet machining is accepted effective technology for cutting various material as of. Keywords abrasive water jet machining, garnet, mild steel 1. In a machining operation, the output parameter is achieved by controlling various input parameters. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining processes electrical, chemical, thermal, hydrodynamic, lasers automation began when lathes were introduced in 1700s. A machinability study of mild steel using abrasive water.
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. Effect of process parameters on abrasive water jet plain. 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. In abrasive jet machining ajm, abrasive particles are made to impinge on the work material at a high velocity.
Investigation of machining parameters in abrasive jet. 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. The values obtained in taguchi analysis was compared with the. In the focusing, machining process variables such as water jet traverse speed, water jet pressure, standoff distance and abrasive flow rate have been investigated to study the effect of each on the pwj milling process parameters. Since the process is non thermal, nonchemical and nonelectrical it creates no.
The process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish on hard work pieces. Abrasive jet machining ajm is the process of material removal from a work piece by the application of a highspeed stream of abrasive particles carried in a gas or air medium from a nozzle. 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. In ajm the abrasive is much finer and the process parameters and cutting action are carefully controlled. Features of cutting parameters and difference from influencing parameters are also discussed here. An abrasive is small, hard particle having sharp edges and an irregular shape. Hastelloy which is difficult to machine by the conventional processes can be machined by using ajm. Mechanics of material removal in abrasive jet machining. The use of abrasives to shape parts is probably the oldest material removal process.