The versatility of the abrasive water jet in cutting almost any engineering material is a very special feature of this technology. List of factors that can affect abrasive jet machining performance is given here. Common uses include cutting heatsensitive, brittle, thin, or hard materials. Investigation of machining parameters in abrasive jet machining on ti6al4v using gra and pca d.
Sep 11, 2015 abrasive jet machining effect of exit gas velocity and abrasive particle density. This work is targeted on predicting responses of awj process parameters for machining a granite material applying rsm and ann and also to optimize the process for qualitative productivity. In abrasive water jet machining awjm, abrasive particles are to prepared. Technological analysis of different abrasive water jet machining. Studies on recharging of abrasives in abrasive water jet. Krishnaiah chetty manufacturing engineering section, indian institute of technology madras, chennai 600 036, india the objective of this work is to.
Water jet machining an overview sciencedirect topics. Process parameters in ajm the abrasive particles used in ajm are aluminium oxide al 2 o 3, silicon carbide sic, glass bead of 1050 for machining, sodium bicarbonate for polishing work. Taguchi technique is used to find optimal process parameters of ultrasonic assisted electrochemical magnetic abrasive finishing uemaf. List of factors that affect abrasive jet machining performance. Pdf abrasive jet machining ajm especially abrasive water jet machining awjm is widely used in the manufacturing sector. The effects of hydraulic, abrasive and machining parameters on particles. Abrasive jet machining ajm is a nontraditional machining process that can machine material without generating heat and. Gas may be supplied either from a compressor or a cylinder. Jun 24, 2018 abrasive jet machining ajm, also known as abrasive microblasting, pencil blasting and micro abrasive blasting,1 is an abrasive blasting machining process that uses abrasives propelled by a.
In all the machining processes the quality of the work piece is depends on various design parameters. 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 abrasive water jet machining process is characterized by large number of process parameters that determine efficiency, economy and quality of the whole process. The process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish to hard metallic workpieces. Amara nageswararao, nimra college of engineering technology, andhra pradesh, india. Abrasive jet machining hindi,diagram,working and process. Get an overview of ajm process, mechanism, parameters, equipment, mrr, accuracy, capability, pros and cons, applications, controlling, etc. Factors related to abrasive, carrier gas, abrasive jet, nozzle, work material, and process parameters and their influences are briefly discussed here. Abrasive jet machining ajm utilizes a high velocity jet of abrasives to remove material from work surface by impact erosion.
The abrasive waterjet awj cutting process has gained immense popularity since its inception. Studies on recharging of abrasives in abrasive water jet machining m. Pdf recent advances and challenges of abrasive jet machining. 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. 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. They complement existing tools used for either primary or secondary operations and could. The following are some of the important process parameters of abrasive jet machining.
Prediction and optimization of process parameters of green. Significance of awj parameters on machining results, 7. Uemaf integrates the use of electrochemical machining, ultrasonic vibrations and magnetic abrasive finishing. 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. Awjm combines abrasive jet machining with water jet machining wjm to. In the present research work, the effect of abrasive water jet awj machining parameters such as jet operating pressure, feed rate, standoff distance sod, and concentration of abrasive on kerf width produced on graphite filled glass fiber reinforced epoxy composite is investigated. 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. Fine abrasive water jet machining of piezoelectric ceramics. Introduction and previous work abrasive machining is a machining process where material is removed from a work piece using a multitude of small abrasive particles. Performance evaluation of abrasive water jet machining on banana fiber reinforced polyester composite.
Controllable parameters the possible controllable parameters of awjm are water jet orifice size, water jet pressure, abrasive grit. In this paper, the optimization of process parameters of two conventional and four advanced machining processes is investigated. Since the process is non thermal, nonchemical and nonelectrical it creates no. Abrasive jet machining ajm is the process of material removal from a. Influence of nozzle design and process parameters on surface roughness of cfrp machined by abrasive jet. In contrast, abrasive water jet awj machining is already an alternative in the. Some studies on abrasive jet machining a machining operation is basically a material removal process, where material is removed in the form of chips. Trepanning involves enlarging previously cut holes. Abrasive jet machining effect of mixing ratio on material removal ratemrr. Non conventional machining processes enable us to get consistency and accuracy in our desired manufacturing techniques. Awjm is applied for several purpose like drill, cutting, cleanup, and engraving operation. Abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation. The machining enclosure is essential to contain the abrasive and machined particles in a safe and ecofriendly manner. Abrasive jet machining ajm is the process of material removal from a workpiece by the.
In awj material removal occurs due to erosion caused by the impact of high velocity abrasive particles entrained in waterjet. The gasses used in ajm are co 2, n 2 or dry air at 2 to 10bar. 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 is an environment friendly and relatively inexpensive process with reasonably high material removal rate.
So, if you can combine both the things, what will happen. Pdf abrasive jet machining ajm is a manufacturing technology based on. Abrasive jet machine introduction abrasive jet machining ajm is a nontraditional machining process that can machine material without generating heat and shock. Parametric optimization of abrasive water jet machining of. The machining is carried out as high velocity 200 ms abrasive particles are issued from the nozzle onto a work piece traversing under the jet. 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. Abrasivejet machining ajm modern machining process. An investigation of abrasive water jet machining on graphite. It has been applied to rough working such as deburring and rough finishing, machining of ceramics and electronic devices. 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.
Mahaboob johny4 1pg student,nimra college of engineering technology, andhra pradesh, india 2asst. 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. Experimentation abrasive water jet machining has been carried out at various levels of process variables as per box. Figure 2 demonstrates the factors influencing awj machining process. Optimization of process parameter in abrasive water jet machining for machining harsh a. Abrasive jet machining mechanical engineering students. Pdf fine abrasive water jet machining of piezoelectric. Abrasive waterjet machining awjm is one of the modern machining process for difficult to cut materials. Optimization of abrasive water jet machining process parameters using taguchi grey relational analysis tgra 84 fig. Air, nitrogen and carbon dioxide to propel the abrasive particles. 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. Abrasive water jet machining awjm is a nontraditional mechanism which operates material exclusive of producing shock and high temperature.
Abrasive jet machining ajm working principle and process. Schematic of abrasive jet machining 2 satyanarayana et al. Influence of nozzle design and process parameters on. 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. It implies to all the important segments of manufacturing sector from extraction of raw material to supply chain. Process parameters water flow rate and pressure, but we have seen abrasives type, size. Paper open access process parameter optimization of. Abrasive jet machining in ajm, generally, the abrasive particles of around 50. A a khan 16, studies the different types of abrasives are used in abrasive water jet machining like garnet, aluminium oxide, sic for analysis of performance in water jet machining on glass after experiment they shows the effect of different parameters on. Abrasive jet machining ajm process, parameters, equipment. 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. Student production mechanical, ldrpitr, gujarat, india 2lecturer, mechanical engineering, ldrpitr, gujarat, india abstract abrasive water jet machining awjm is the nontraditional material removal process. To enhance the cutting capability of awj, abrasive water suspension jet awsj is developed in which the machining is achieved by high velocity suspension jet of polymerized water and abrasives. Abrasives gas propulsion system supplies clean and dry air.
Ann and rsm approach for modelling and multi objective. It is envisaged that hybrid processes, which combine the actions of electrical. This paper deals with various experiment that were conducted to assess the influence of abrasive jet machining process parameters on material removal rate using aluminium oxide, sic type of small. They are quick to set up, and offer quick turnaround on the machine. Department of automobile engineering, karpagam university, coimbatore641021. Abrasive water jet awj cutting at the division of materials processing, lulea. Jan 27, 2014 abrasive jet machining effect of process parameters on mrr 30. Abrasive jet machining ajm, also known as abrasive microblasting, pencil blasting and microabrasive blasting,1 is an abrasive blasting machining process that uses abrasives propelled by. Investigation of machining parameters in abrasive jet. Abrasive jet micro machining ajmm is a relatively new.
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