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Unit 4 discusses several non-traditional machining processes including abrasive jet machining. Abrasive jet machining involves using a high-velocity jet of abrasive particles carried by a carrier gas to remove material from a workpiece. Key aspects of the process are that abrasive particles around 50 micrometers are accelerated to 200 meters per second by compressed air or gas and directed at the workpiece by a nozzle. Process parameters that can be controlled include the abrasive type and size, carrier gas properties, abrasive jet velocity and flow rate, standoff distance, and impingement angle. Abrasive jet machining is suitable for drilling intricate shapes in hard and brittle materials.
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Abrasive jet machining
The document discusses abrasive jet machining, which uses a high-velocity stream of abrasive particles carried by compressed air or gas to erode material through micro-cutting and brittle fracture. It describes the process, components, process parameters like abrasives, carrier gas, and nozzle used. Applications include cutting brittle materials like glass, ceramics, and silicon. Key advantages are cool cutting of heat-sensitive materials and high surface finish quality.
Ajm unit 2
In abrasive jet machining (AJM), compressed air carries abrasive particles like aluminum oxide or silicon carbide through a nozzle to machine hard, brittle materials. The high-velocity abrasive particles remove material by micro-cutting and brittle fracture. AJM can drill intricate shapes, machine fragile materials, and is used for drilling, cutting, deburring, cleaning, and etching. Material removal rate is low, abrasives may embed, and environmental impact is high. AJM is suitable for hard, brittle materials like glass, ceramics, and mica.
ABRASIVE JET MACHINING by Ms Shikha Kashyap
Abrasive jet machining uses abrasive particles mixed with air or water that are forced through a nozzle at high velocity to erode material from the workpiece surface. Finer abrasive particles produce better surface finishes down to 0.5 micrometers, but removal rates are very slow at around 0.5 cubic centimeters per hour. The process is suitable for machining hard and brittle materials and can be used for drilling small holes, cutting ceramics and glass, and finishing complex shapes. Key factors that influence the machining include the abrasive particle size, carrier gas velocity and mixing ratio, work material properties, and standoff distance between the nozzle and workpiece.
Abrassive Water-Jet Machining by Himanshu Vaid
Waterjet cutting is a versatile machining process that uses a high-pressure stream of water, or water with an abrasive added, to cut materials. It can cut both soft materials like cardboard as well as hard materials like steel. Waterjet cutting produces no heat affected zone and leaves a smooth, burr-free edge. It is suitable for cutting a wide range of materials and shapes quickly and with high precision. The main limitations are slower cutting of very hard materials and potential loss of accuracy for thick parts.
Abrasive jet machining
Abrasive jet machining (AJM) is a metal removal process invented in 1967 that uses a high-velocity jet of abrasive particles carried by an inert gas to erode material from a workpiece. Key factors that influence the machining include the abrasive material, carrier gas, nozzle characteristics, and workpiece material. AJM is effective for hard, brittle materials like ceramics and glass but less so for soft materials like aluminum. It can produce intricate shapes and details and cut fragile materials without risk of breaking. However, it has low material removal rates and machining accuracy.
Abrasive water jet machining
Abrasive water jet machining uses a high-pressure water stream to accelerate abrasive particles to cut through materials. It works by mixing abrasive particles into the water jet as it exits the nozzle. The coherent abrasive water jet can then cut hard materials through two mechanisms - erosion at shallow impact angles and deformation wear at deeper angles into the cut. Key process parameters that influence the cut include water pressure, abrasive flow rate, particle size, traverse speed, and stand-off distance from the workpiece. Abrasive water jet machining combines the capabilities of waterjet machining and abrasive jet machining to cut a wide range of materials with a narrow kerf even at great depths.
ABRASIVE JET MACHINE
Abrasive jet machining is a machining process that uses a high-pressure stream of abrasive particles to erode material from a workpiece. It allows for precision machining of brittle materials with no heat affected zone and surface finishes as fine as 0.4-1.2 micrometers. The process involves mixing abrasive particles with a pressurized gas before passing them through a nozzle to eject them at speeds up to 300 m/s onto the workpiece. Factors like abrasive type, nozzle characteristics, gas pressure and flow rates influence the machining rate, accuracy and surface quality achievable.
ABRASIVE WATER JET MACHINING
This slide contains theoritical and analytical study about "about abrasive water jet machining process" and it has also discription about " OMAX 60120 abrasive water jet machine.Here analytical stydy is done with mainly ss-304 material.
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Abrasive jet machining
The document discusses abrasive jet machining, which uses a high-velocity stream of abrasive particles carried by compressed air or gas to erode material through micro-cutting and brittle fracture. It describes the process, components, process parameters like abrasives, carrier gas, and nozzle used. Applications include cutting brittle materials like glass, ceramics, and silicon. Key advantages are cool cutting of heat-sensitive materials and high surface finish quality.
Ajm unit 2
In abrasive jet machining (AJM), compressed air carries abrasive particles like aluminum oxide or silicon carbide through a nozzle to machine hard, brittle materials. The high-velocity abrasive particles remove material by micro-cutting and brittle fracture. AJM can drill intricate shapes, machine fragile materials, and is used for drilling, cutting, deburring, cleaning, and etching. Material removal rate is low, abrasives may embed, and environmental impact is high. AJM is suitable for hard, brittle materials like glass, ceramics, and mica.
ABRASIVE JET MACHINING by Ms Shikha Kashyap
Abrasive jet machining uses abrasive particles mixed with air or water that are forced through a nozzle at high velocity to erode material from the workpiece surface. Finer abrasive particles produce better surface finishes down to 0.5 micrometers, but removal rates are very slow at around 0.5 cubic centimeters per hour. The process is suitable for machining hard and brittle materials and can be used for drilling small holes, cutting ceramics and glass, and finishing complex shapes. Key factors that influence the machining include the abrasive particle size, carrier gas velocity and mixing ratio, work material properties, and standoff distance between the nozzle and workpiece.
Abrassive Water-Jet Machining by Himanshu Vaid
Waterjet cutting is a versatile machining process that uses a high-pressure stream of water, or water with an abrasive added, to cut materials. It can cut both soft materials like cardboard as well as hard materials like steel. Waterjet cutting produces no heat affected zone and leaves a smooth, burr-free edge. It is suitable for cutting a wide range of materials and shapes quickly and with high precision. The main limitations are slower cutting of very hard materials and potential loss of accuracy for thick parts.
Abrasive jet machining
Abrasive jet machining (AJM) is a metal removal process invented in 1967 that uses a high-velocity jet of abrasive particles carried by an inert gas to erode material from a workpiece. Key factors that influence the machining include the abrasive material, carrier gas, nozzle characteristics, and workpiece material. AJM is effective for hard, brittle materials like ceramics and glass but less so for soft materials like aluminum. It can produce intricate shapes and details and cut fragile materials without risk of breaking. However, it has low material removal rates and machining accuracy.
Abrasive water jet machining
Abrasive water jet machining uses a high-pressure water stream to accelerate abrasive particles to cut through materials. It works by mixing abrasive particles into the water jet as it exits the nozzle. The coherent abrasive water jet can then cut hard materials through two mechanisms - erosion at shallow impact angles and deformation wear at deeper angles into the cut. Key process parameters that influence the cut include water pressure, abrasive flow rate, particle size, traverse speed, and stand-off distance from the workpiece. Abrasive water jet machining combines the capabilities of waterjet machining and abrasive jet machining to cut a wide range of materials with a narrow kerf even at great depths.
ABRASIVE JET MACHINE
Abrasive jet machining is a machining process that uses a high-pressure stream of abrasive particles to erode material from a workpiece. It allows for precision machining of brittle materials with no heat affected zone and surface finishes as fine as 0.4-1.2 micrometers. The process involves mixing abrasive particles with a pressurized gas before passing them through a nozzle to eject them at speeds up to 300 m/s onto the workpiece. Factors like abrasive type, nozzle characteristics, gas pressure and flow rates influence the machining rate, accuracy and surface quality achievable.
ABRASIVE WATER JET MACHINING
This slide contains theoritical and analytical study about "about abrasive water jet machining process" and it has also discription about " OMAX 60120 abrasive water jet machine.Here analytical stydy is done with mainly ss-304 material.
Abrasive jet machining.51 ppt
Abrasive jet machining is an unconventional machining process that uses a high-velocity stream of abrasive particles suspended in a gas to remove material through erosion. It can machine hard and brittle materials that cannot be cut through conventional processes. The process involves mixing abrasive particles with a pressurized gas and passing them through a nozzle to erode away the workpiece material. It provides advantages like ability to machine heat-sensitive materials without damaging them and capability to cut intricate holes, but has low material removal rates and accuracy issues due to stray cutting.
A REVIEW ON ABRASIVE JET MACHINING
This document reviews abrasive jet machining (AJM), a non-traditional machining process where a high-pressure air/gas stream carries abrasive particles through a nozzle to erode material from a workpiece. AJM can machine brittle materials without thermal damage and provides precision machining for applications like cutting, drilling, and deburring. The review discusses the AJM process components and working principles. Key parameters that influence the material removal rate are identified as abrasive particle properties, gas pressure, abrasive flow rate, standoff distance, and mixing ratio of abrasives and gas. Optimum values of these parameters maximize the material removal rate for efficient AJM processing.
Abrasive jet machining
Abrasive jet machining (AJM) is a mechanical energy based unconventional machining process that uses a high velocity abrasive jet to remove material from hard metallic workpieces. It works by mixing compressed gas with abrasive particles in a mixing chamber and forcing the abrasive jet through a nozzle onto the workpiece. Key components include an abrasive jet, mixing chamber, compressor, nozzle, and various pressure and flow controls. AJM can be used to drill, bore, finish surfaces, cut, clean, deburr, etch, trim, and mill hard materials.
Water jet machining (WJM) is a similar non-traditional machining process that uses high pressure water instead of an
Ajm ppt12345 copy fr ucm
The document discusses abrasive jet machining (AJM), including its working principle, components, process parameters, applications, advantages, and disadvantages. AJM works by using a high-pressure jet of abrasive particles carried by gas to erode material from the workpiece surface. Key parameters that affect the machining include abrasive type and size, gas pressure and flow rate, nozzle design, and stand-off distance between nozzle and workpiece. AJM can machine hard and brittle materials and create complex shapes, though it has low material removal rates and issues with accuracy due to jet divergence.
Abrasive Jet Machining (AJM)
Abrasive jet machining (AJM) uses a high-pressure stream of abrasive particles carried by gas or air to remove material from a workpiece. The abrasive particles are forced through a small nozzle at high velocity to impact the work surface. This allows for drilling intricate holes and cutting hard, brittle materials like ceramics more precisely than sand blasting. The process parameters like material removal rate, surface finish, and nozzle wear depend on factors such as abrasive size and flow rate, gas pressure and velocity, and nozzle size and position. AJM is well-suited for deburring and precision machining of small parts made of difficult materials like ceramics, glass, and superalloys
Abrasive Jet machine (AJM)
The document describes abrasive jet machining. It involves removing material from a workpiece using a high-velocity stream of air or gas mixed with abrasive particles. Key components include an air compressor, abrasive delivery system, nozzle, and motion system to direct the abrasive stream. The mixing tube is where abrasive mixes with pressurized air before exiting the nozzle to erode material. A CNC motion system provides automated precision control over the machining process.
Unit 2 ucm
This document provides an overview of mechanical energy-based machining processes including abrasive jet machining, water jet machining, abrasive water jet machining, and ultrasonic machining. It describes the basic working principles of each process including the equipment used and key process parameters. Abrasive jet machining involves a high velocity stream of abrasive particles carried by compressed gas that machines materials by mechanical abrasion. Water jet machining uses ultrahigh pressure water to cut materials, while abrasive water jet machining adds abrasive particles to the water jet to increase cutting ability and speed. Ultrasonic machining involves vibrating a tool at high frequency against a workpiece with an abrasive slurry to erode material
Abrasive jet machining
The document discusses abrasive jet machining (AJM), which is a machining process where material is removed by a high-velocity stream of abrasive particles carried in a gas. It describes the process, components, parameters, capabilities, applications, advantages, and disadvantages of AJM. Key aspects covered include that AJM uses abrasive particles accelerated in a gas stream to cause micro-fracturing and erosion of the workpiece surface, and that it can machine hard and brittle materials with a cool cutting action and high surface finish.
abrasive water jet machine
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Abrasive jet-machining
Abrasive jet machining uses a high-velocity stream of abrasive particles suspended in a gas or liquid to erode material from a workpiece. It involves an abrasive delivery system, control system, pump, nozzle, mixing tube, and motion system to direct the abrasive jet. The abrasive particles impact the workpiece surface at high velocities and remove material primarily through brittle fracture or microcutting. Key factors that influence the material removal rate include abrasive type and size, jet velocity and pressure, stand-off distance, and impingement angle. Abrasive jet machining can precisely machine many materials and offers advantages like fast setup times and no heat affected zones.
Abrasive water jet machining juny
This document provides an overview of abrasive water jet machining (AWJM). It describes the process as using high-pressure water and abrasive particles to erode material for machining. The mechanism involves concentrating energy from the water jet to locally exceed the material's strength. Key process parameters include water pressure up to 4000 bar, abrasive materials like garnet, and standoff distances of 1-2 mm. The document lists applications like cutting various materials and advantages like flexibility and lack of heat/waste. Disadvantages include limited materials that can be cut economically and thickness restrictions to maintain accuracy.
Presentation of-abrasive-jet-machining
Abrasive jet machining uses a high-pressure stream of abrasive particles suspended in a liquid to erode material from a workpiece. It involves a pump, mixing tube, nozzle, and motion system to direct the abrasive jet. Key components include an abrasive delivery system to store and feed abrasive, a control system to vary the feed rate, and a precision motion table. The process provides fast setup, requires no start holes, uses a single tool, and generates no heat in the workpiece. However, removal rates are low and accuracy can decrease with deeper cuts.
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Water jet machining uses a high pressure stream of water, sometimes with an abrasive additive, to cut materials. Key aspects of the process include a water jet that travels at speeds of 540-1400 m/s to erode material from the workpiece surface. Parameters like pressure, abrasive grain size, and speed affect the performance and quality of cuts. Water jet machining provides advantages like flexibility, environmental friendliness, and stress-free cuts of many materials without heat or debris. However, initial costs can be high and material removal rates are low.
Design and fabrication of working model of abrasive jet machine
This document is a project report submitted by Jitesh Kumar for the partial fulfillment of a Master's degree in Mechanical Engineering. It discusses the design and fabrication of a working model of an Abrasive Jet Machine. The report includes sections on the components of an AJM, variables that influence the machining process, advantages and limitations, applications, and a literature review. It also provides details on the design of the major components of the machine being developed for this project.
Abrasive Jet Machining
This document presents information on abrasive jet machining (AJM). It discusses the working principle of AJM, which involves a focused stream of abrasive particles carried by compressed air or gas impacting the work surface through a nozzle to remove material by erosion. The key components of an AJM system are identified as the pump, control system, mixing chamber, and nozzle. Applications of AJM include micro-machining of brittle objects, deburring, cutting of optical fibers, and machining of lenses. Advantages include the ability to machine intricate shapes in hard materials without contact or heat, while disadvantages include lower accuracy and material removal rates compared to other machining methods.
Abrasive Jet Machining
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Water jet cutting uses high-pressure water or water mixed with abrasive material to cut through materials. There are two types: pure water jet cutting uses only high-pressure water and can cut softer materials like wood, concrete, and glass. Abrasive water jet mixing uses garnet or olivine abrasives to cut harder materials like metals and composites. Water jet cutting has advantages like being able to cut any material, producing no heat-affected zones or sparks, and leaving smooth edges. However, it is not suitable for mass production due to high maintenance needs and inability to cut very thick materials.
Analysis of abrasive jet machining parameters on mrr and kerf width of hard a...
This document analyzes the parameters of abrasive jet machining on material removal rate (MRR) and kerf width when machining hard, brittle materials like ceramics. An experiment was conducted using a Taguchi design of experiments with three parameters (nozzle diameter, air pressure, standoff distance) at three levels. The maximum MRR obtained was 0.09476 gm/sec and minimum kerf width was 5.7325 mm. Analysis of variance found that nozzle diameter had the most significant effect on MRR, while standoff distance most significantly affected kerf width.
Abrasive jet machining bestEST
Abrasive jet machining uses a high-pressure stream of abrasive particles carried by gas or water to erode material from a workpiece. Key components include an abrasive delivery system, control system, pump, nozzle, and motion system. It can precisely cut hard materials like ceramics and glass. While removal rates are slower than other machining methods, AJM requires no start holes and generates minimal heat or vibration in the workpiece.
Abrasive jet-machining process
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Abrasive jet machining.51 ppt
Abrasive jet machining is an unconventional machining process that uses a high-velocity stream of abrasive particles suspended in a gas to remove material through erosion. It can machine hard and brittle materials that cannot be cut through conventional processes. The process involves mixing abrasive particles with a pressurized gas and passing them through a nozzle to erode away the workpiece material. It provides advantages like ability to machine heat-sensitive materials without damaging them and capability to cut intricate holes, but has low material removal rates and accuracy issues due to stray cutting.
A REVIEW ON ABRASIVE JET MACHINING
This document reviews abrasive jet machining (AJM), a non-traditional machining process where a high-pressure air/gas stream carries abrasive particles through a nozzle to erode material from a workpiece. AJM can machine brittle materials without thermal damage and provides precision machining for applications like cutting, drilling, and deburring. The review discusses the AJM process components and working principles. Key parameters that influence the material removal rate are identified as abrasive particle properties, gas pressure, abrasive flow rate, standoff distance, and mixing ratio of abrasives and gas. Optimum values of these parameters maximize the material removal rate for efficient AJM processing.
Abrasive jet machining
Abrasive jet machining (AJM) is a mechanical energy based unconventional machining process that uses a high velocity abrasive jet to remove material from hard metallic workpieces. It works by mixing compressed gas with abrasive particles in a mixing chamber and forcing the abrasive jet through a nozzle onto the workpiece. Key components include an abrasive jet, mixing chamber, compressor, nozzle, and various pressure and flow controls. AJM can be used to drill, bore, finish surfaces, cut, clean, deburr, etch, trim, and mill hard materials.
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Ajm ppt12345 copy fr ucm
The document discusses abrasive jet machining (AJM), including its working principle, components, process parameters, applications, advantages, and disadvantages. AJM works by using a high-pressure jet of abrasive particles carried by gas to erode material from the workpiece surface. Key parameters that affect the machining include abrasive type and size, gas pressure and flow rate, nozzle design, and stand-off distance between nozzle and workpiece. AJM can machine hard and brittle materials and create complex shapes, though it has low material removal rates and issues with accuracy due to jet divergence.
Abrasive Jet Machining (AJM)
Abrasive jet machining (AJM) uses a high-pressure stream of abrasive particles carried by gas or air to remove material from a workpiece. The abrasive particles are forced through a small nozzle at high velocity to impact the work surface. This allows for drilling intricate holes and cutting hard, brittle materials like ceramics more precisely than sand blasting. The process parameters like material removal rate, surface finish, and nozzle wear depend on factors such as abrasive size and flow rate, gas pressure and velocity, and nozzle size and position. AJM is well-suited for deburring and precision machining of small parts made of difficult materials like ceramics, glass, and superalloys
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The document describes abrasive jet machining. It involves removing material from a workpiece using a high-velocity stream of air or gas mixed with abrasive particles. Key components include an air compressor, abrasive delivery system, nozzle, and motion system to direct the abrasive stream. The mixing tube is where abrasive mixes with pressurized air before exiting the nozzle to erode material. A CNC motion system provides automated precision control over the machining process.
Unit 2 ucm
This document provides an overview of mechanical energy-based machining processes including abrasive jet machining, water jet machining, abrasive water jet machining, and ultrasonic machining. It describes the basic working principles of each process including the equipment used and key process parameters. Abrasive jet machining involves a high velocity stream of abrasive particles carried by compressed gas that machines materials by mechanical abrasion. Water jet machining uses ultrahigh pressure water to cut materials, while abrasive water jet machining adds abrasive particles to the water jet to increase cutting ability and speed. Ultrasonic machining involves vibrating a tool at high frequency against a workpiece with an abrasive slurry to erode material
Abrasive jet machining
The document discusses abrasive jet machining (AJM), which is a machining process where material is removed by a high-velocity stream of abrasive particles carried in a gas. It describes the process, components, parameters, capabilities, applications, advantages, and disadvantages of AJM. Key aspects covered include that AJM uses abrasive particles accelerated in a gas stream to cause micro-fracturing and erosion of the workpiece surface, and that it can machine hard and brittle materials with a cool cutting action and high surface finish.
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Abrasive jet-machining
Abrasive jet machining uses a high-velocity stream of abrasive particles suspended in a gas or liquid to erode material from a workpiece. It involves an abrasive delivery system, control system, pump, nozzle, mixing tube, and motion system to direct the abrasive jet. The abrasive particles impact the workpiece surface at high velocities and remove material primarily through brittle fracture or microcutting. Key factors that influence the material removal rate include abrasive type and size, jet velocity and pressure, stand-off distance, and impingement angle. Abrasive jet machining can precisely machine many materials and offers advantages like fast setup times and no heat affected zones.
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This document provides an overview of abrasive water jet machining (AWJM). It describes the process as using high-pressure water and abrasive particles to erode material for machining. The mechanism involves concentrating energy from the water jet to locally exceed the material's strength. Key process parameters include water pressure up to 4000 bar, abrasive materials like garnet, and standoff distances of 1-2 mm. The document lists applications like cutting various materials and advantages like flexibility and lack of heat/waste. Disadvantages include limited materials that can be cut economically and thickness restrictions to maintain accuracy.
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Abrasive jet machining uses a high-pressure stream of abrasive particles suspended in a liquid to erode material from a workpiece. It involves a pump, mixing tube, nozzle, and motion system to direct the abrasive jet. Key components include an abrasive delivery system to store and feed abrasive, a control system to vary the feed rate, and a precision motion table. The process provides fast setup, requires no start holes, uses a single tool, and generates no heat in the workpiece. However, removal rates are low and accuracy can decrease with deeper cuts.
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Water jet machining uses a high pressure stream of water, sometimes with an abrasive additive, to cut materials. Key aspects of the process include a water jet that travels at speeds of 540-1400 m/s to erode material from the workpiece surface. Parameters like pressure, abrasive grain size, and speed affect the performance and quality of cuts. Water jet machining provides advantages like flexibility, environmental friendliness, and stress-free cuts of many materials without heat or debris. However, initial costs can be high and material removal rates are low.
Design and fabrication of working model of abrasive jet machine
This document is a project report submitted by Jitesh Kumar for the partial fulfillment of a Master's degree in Mechanical Engineering. It discusses the design and fabrication of a working model of an Abrasive Jet Machine. The report includes sections on the components of an AJM, variables that influence the machining process, advantages and limitations, applications, and a literature review. It also provides details on the design of the major components of the machine being developed for this project.
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This document presents information on abrasive jet machining (AJM). It discusses the working principle of AJM, which involves a focused stream of abrasive particles carried by compressed air or gas impacting the work surface through a nozzle to remove material by erosion. The key components of an AJM system are identified as the pump, control system, mixing chamber, and nozzle. Applications of AJM include micro-machining of brittle objects, deburring, cutting of optical fibers, and machining of lenses. Advantages include the ability to machine intricate shapes in hard materials without contact or heat, while disadvantages include lower accuracy and material removal rates compared to other machining methods.
Abrasive Jet Machining
It is a material removal process where the material is removed by high velocity stream of air/gas or water and abrasive mixture.
Harendra kua
Water jet cutting uses high-pressure water or water mixed with abrasive material to cut through materials. There are two types: pure water jet cutting uses only high-pressure water and can cut softer materials like wood, concrete, and glass. Abrasive water jet mixing uses garnet or olivine abrasives to cut harder materials like metals and composites. Water jet cutting has advantages like being able to cut any material, producing no heat-affected zones or sparks, and leaving smooth edges. However, it is not suitable for mass production due to high maintenance needs and inability to cut very thick materials.
Analysis of abrasive jet machining parameters on mrr and kerf width of hard a...
This document analyzes the parameters of abrasive jet machining on material removal rate (MRR) and kerf width when machining hard, brittle materials like ceramics. An experiment was conducted using a Taguchi design of experiments with three parameters (nozzle diameter, air pressure, standoff distance) at three levels. The maximum MRR obtained was 0.09476 gm/sec and minimum kerf width was 5.7325 mm. Analysis of variance found that nozzle diameter had the most significant effect on MRR, while standoff distance most significantly affected kerf width.
Abrasive jet machining bestEST
Abrasive jet machining uses a high-pressure stream of abrasive particles carried by gas or water to erode material from a workpiece. Key components include an abrasive delivery system, control system, pump, nozzle, and motion system. It can precisely cut hard materials like ceramics and glass. While removal rates are slower than other machining methods, AJM requires no start holes and generates minimal heat or vibration in the workpiece.
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Design and fabrication of working model of abrasive jet machine
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Analysis of abrasive jet machining parameters on mrr and kerf width of hard a...
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2) A dielectric fluid is used to separate the electrode and workpiece and to flush away debris. Typical fluids include oil-based fluids like kerosene.
3) An electrical charge creates sparks that momentarily melt and vaporize metal. Process parameters like voltage, gap size, and flush rate must be optimized to control the erosion process.
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Eectrochemical Grinding by Himanshu Vaid
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Wel
This document provides an overview of advanced machining processes including chemical machining, electrochemical machining, electrical discharge machining, laser beam machining, water jet machining, and abrasive jet machining. It describes the basic mechanisms and capabilities of each process. Examples are given of complex parts that can be manufactured using these processes like biomedical implants, turbine blades, and microscopic gears. Nanofabrication techniques are also discussed for producing extremely small features at the micro and nanoscale.
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CHEMICAL MACHINING - NON TRADITIONAL MACHINING
The chemical machining processes include those wherein material removal is accomplished by a chemical reaction, sometimes assisted by electrical or thermal energy applications. This group includes chemical milling, photochemical machining, and thermo-chemical machining.
Electron beam machining (ebm)
Electron beam machining (EBM) utilizes a focused beam of high-velocity electrons to perform high-speed drilling and cutting. It works by melting and rapidly vaporizing material through intense heating caused by bombarding electrons. The process requires vacuum and uses a cathode, magnetic lenses, and other equipment to generate and focus the electron beam. EBM can drill small, high aspect ratio holes in almost any material without mechanical forces. It has high material removal rates but also high equipment costs and non-productive pump down times. Applications include drilling, sheet perforation, and circuit pattern generation.
electrochemical grinding
1. Electrochemical grinding (ECG) is a non-traditional machining process that removes electrically conductive material by grinding with a negatively charged abrasive wheel, electrolyte fluid, and a positively charged workpiece. Materials are removed through electrolysis and some abrasion, leaving a smooth burr-free surface.
2. ECG can machine very hard and brittle materials more effectively than traditional processes due to generating little heat. Key parameters that affect the material removal rate include the abrasive wheel properties, workpiece material and surface, machining conditions, electrolyte type and properties, and voltage applied.
3. ECG provides advantages like burr-free surfaces, less work hardening, higher precision
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Nontraditional Machining Processes by Himanshu Vaid
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Module 4.pdf
Abrasive jet machining uses compressed air or gas to propel abrasive particles at high velocities towards a workpiece. The abrasive particles remove material through micro-cutting and brittle fracture. Key components of the process include the gas propulsion system, abrasive feeder, machining chamber and AJM nozzle. Process parameters like abrasive type, carrier gas properties, abrasive flow rate and nozzle characteristics influence the material removal rate, surface finish and nozzle wear. AJM can precisely machine hard and brittle materials.
Abrasive jet machining
Abrasive jet machining (AJM) is a non-traditional machining process that uses a high-pressure stream of abrasive particles carried by a gas to erode material from a workpiece. In AJM, abrasive particles are accelerated to high velocities and directed by a nozzle towards the workpiece to remove material through micro-cutting and brittle fracture. AJM can machine hard and heat-sensitive materials like ceramics, glass, and advanced composites, and provides good surface finish, accuracy, and capability to machine intricate shapes. However, AJM has low material removal rates and issues with abrasive particle embedment.
Unit ii ajm
The document discusses abrasive jet machining (AJM). It describes the principle, construction, working, advantages, disadvantages, applications, characteristics and factors affecting the material removal rate in AJM. The key points are:
1. AJM uses a high-speed stream of abrasive particles mixed with compressed air or gas to machine hard, brittle materials.
2. It consists of a mixing chamber, nozzle, pressure gauge and other components to mix and direct the abrasive particles.
3. AJM can machine intricate shapes without heat or contact, but has a low material removal rate and requires dust collection.
2nd sem M TECH NTM Introduction and AJM 16.01.2019.pptx
This document provides an overview of abrasive jet machining (AJM) as a non-traditional machining process. It discusses how AJM works by using a high-velocity jet of abrasive particles carried by a gas to remove material through micro-cutting and brittle fracture. The key process parameters of AJM like abrasive type and size, gas properties, and nozzle characteristics are described. Empirical models for calculating material removal rate in AJM for brittle and ductile materials are presented. Applications of AJM include machining hard, brittle, fragile and heat-sensitive materials, while limitations include low material removal rates and potential for abrasive embedment.
Abrasive jet machining
The document summarizes abrasive jet machining (AJM), an unconventional machining process. In AJM, a high velocity jet of abrasive particles carried by compressed air or gas is directed at a workpiece to remove material. Key aspects of AJM include the gas propulsion system, abrasive feeder, machining chamber, AJM nozzle, and abrasives used. AJM is useful for machining brittle materials and provides better surface finish than conventional machining. The document outlines the various components and process of AJM.
Ajm(Abrasive jet machining)
Abrasive jet machining is a non-traditional machining process that removes material by directing a high-velocity stream of abrasive particles carried by a gas through a nozzle onto a workpiece. The abrasive particles impact the workpiece surface at speeds up to 300 m/s, removing material through micro-cutting and brittle fracture. Key aspects of the process include the abrasive particles (usually aluminum oxide or silicon carbide around 50 microns in size), gas propulsion system, abrasive feeder, mixing chamber and nozzle (made of tungsten carbide). Abrasive jet machining can efficiently machine intricate shapes in hard, brittle materials like ceramics and glass with low heat impact.
Unconventional machining processes
ABRASIVE JET MACHINING, ULTRASONIC MACHINING, ELECTRON BEAM MACHINING, ELECTRO CHEMICAL MACHINING & ELECTRICAL DISCHARGE MACHINING
Abrasive Jet Machine
The abrasive jet machine is classified as a non-conventional machine and in this slide introduction about it the structure and, advantage, and disadvantage
Module 2 ajm
Abrasive jet machining is a non-traditional machining process that uses a high-pressure jet of abrasive particles suspended in a carrier gas or liquid to erode material from the workpiece surface. Key aspects of the process include:
- Material is removed via erosion caused by abrasive particles impacting the workpiece surface at high velocity. Common abrasives used are aluminum oxide and silicon carbide.
- Process variables that influence the material removal rate and quality of surface finish include the carrier gas, abrasive type and size, abrasive flow rate and velocity, stand-off distance between nozzle and workpiece, and mixing ratio of abrasives to carrier gas.
- The equipment used consists
Various Non-conventional machining Process
The document provides information on various non-conventional machining processes. It begins by defining non-traditional manufacturing processes as those that remove material using mechanical, thermal, electrical, or chemical energy without sharp cutting tools. Extremely hard materials are difficult to machine with traditional processes. The document then discusses several non-traditional processes in detail, including abrasive jet machining (AJM), ultrasonic machining (USM), electrical discharge machining (EDM), and their working principles and applications.
Machining processes
This document provides information on various machining processes, both traditional and non-traditional. It begins by defining machining and categorizing different machining methods such as cutting, abrasive processes, and nontraditional processes using electrical, chemical or optical energy. Specific nontraditional processes discussed include abrasive jet machining (AJM), water jet machining (WJM), ultrasonic machining (USM), chemical machining (CM), and electrochemical machining (ECM). The document explains the basic working principles, construction details, advantages, and applications of these nontraditional machining processes.
Shivam pandey ppt on ajm
Abrasive jet machining involves a high velocity stream of gas or water mixed with abrasive particles being directed at a material to remove it. The process uses a mixing chamber to combine the abrasive particles like aluminum oxide or silicon carbide that are 10-50 micrometers in size with a gas like nitrogen or air. This mixture is then passed through a small tungsten carbide nozzle at speeds of 150-300 meters per second to machine the material.
ABRASIVE JET MACHINING
Abrasive jet machining involves removing material from a workpiece using a high-velocity stream of abrasive particles carried by a gas. The process works by directing the abrasive particle jet through a nozzle at the workpiece surface. Material is removed through the erosive action of the abrasive particles striking the workpiece surface. Abrasive jet machining can cut hard and brittle materials and produces a high surface finish. It has advantages of low power consumption and capital cost but limitations include low material removal rates and high nozzle wear.
Non-traditional-machining.pdf
The document provides an introduction to non-traditional machining processes. It discusses how non-traditional machining is needed for hard or precision materials that cannot be machined through traditional methods. It then classifies non-traditional machining processes into mechanical, thermal, chemical, and electrochemical categories based on the energy source used. Specific non-traditional machining techniques like abrasive jet machining, ultrasonic machining, electrochemical machining, and water jet cutting are then described in more detail, outlining their basic mechanisms and important process parameters.
Abrasive jet machining
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Machining system figure
Abrasive jet machining
Material removal
Process parameters – contd.
Application
Advantage
Disadvantage/Limitation
UCM-UNIT- 1.pptx
This document provides information on unconventional machining processes including mechanical energy based processes. It discusses abrasive jet machining where compressed air carries abrasive particles to impact and machine hard materials. Water jet machining uses high pressure water to cut. Abrasive water jet machining adds abrasives to the water jet. Ultrasonic machining uses high frequency vibrations and an abrasive slurry to machine hard brittle materials. Key parameters that affect the material removal rate in these processes are discussed such as abrasive grain size, gas/water pressure, and velocity. Advantages include ability to machine hard materials without heat, while disadvantages include low material removal rates and accuracy issues.
UNCONVENTIONAL MACHINING PROCESS
This document provides an overview of ultrasonic machining (USM). It explains that in USM, a tool oscillated at ultrasonic frequencies (around 20 kHz) with abrasive particles in the gap between the tool and workpiece. The abrasive particles are forced to repeatedly impact the work surface due to the ultrasonic oscillations, removing material through micro-chipping. Key advantages of USM include the ability to machine hard and brittle materials precisely without producing thermal or chemical defects, while disadvantages include low material removal rates and fast tool wear. Common abrasives used include aluminum oxide and silicon carbide in a water slurry. USM is suitable for machining intricate shapes, small holes, and hard non-conductive
Lecture3
The AJM process involves removing material from a workpiece using abrasive particles carried by a high-velocity gas stream. The abrasive particles impact the workpiece surface at high velocities, causing brittle fractures and removing small fragments of material. AJM can machine hard and brittle materials and reach difficult internal areas due to the flexible hose used to direct the abrasive stream. It generates less heat than conventional machining and does not require direct tool-workpiece contact. Common applications include cutting glass and ceramics, deburring metal parts, and cleaning or dressing grinding wheels.
Notes-1.pptx
This document provides an introduction to abrasive jet machining (AJM), a type of non-traditional machining. It explains that AJM involves removing material from the workpiece through the impingement of high-velocity abrasive particles propelled by a gas. The key process parameters that control machining characteristics are described, including the abrasive material, gas used, nozzle design and stand-off distance. Advantages of AJM include obtaining a high surface finish, causing little damage, and enabling machining of heat-sensitive materials. Disadvantages are its lower material removal rate and difficulty achieving accuracy and straight holes.
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2nd sem M TECH NTM Introduction and AJM 16.01.2019.pptx
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Ajm upload
- 1. Unit - 4 Abrasive Jet Machining Water Jet Machining Ultrasonic Machining Electro Discharge Machining Electro Chemical Machining Laser Beam Machining
- 2. Abrasive Jet Machining • In Abrasive Jet Machining (AJM), abrasive particles are made to impinge on the work material at a high velocity. • The jet of abrasive particles is carried by carrier gas or air. • 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. • The nozzle directs the abrasive jet in a controlled manner onto the work material, so that the distance between the nozzle and the work piece and the impingement angle can be set desirably. • The high velocity abrasive particles remove the material by micro-cutting action as well as brittle fracture of the work material.
- 3. Abrasive Jet Machining • AJM, finer abrasive grits are used and the parameters can be controlled more effectively providing better control over product quality. • In AJM, generally, the abrasive particles of around 50 μm grit size would impinge on the work material at velocity of 200 m/s from a nozzle of 0.5 mm with a stand off distance of around 2 mm. • The kinetic energy of the abrasive particles would be sufficient to provide material removal due to brittle fracture of the work piece or even micro cutting by the abrasives.
- 5. Abrasive Jet MachiningEquipment • In AJM, air is compressed in an air compressor and compressed air at a pressure of around 5 bar is used as the carrier gas • Gases like CO2, N2 can also be used as carrier gas which may directly be issued from a gas cylinder. • Generally oxygen is not used as a carrier gas. • The carrier gas is first passed through a pressure regulator to obtain the desired working pressure. • The gas is then passed through an air dryer to remove any residual water vapour. • To remove any oil vapour or particulate contaminant the same is passed through a series of filters. • Then the carrier gas enters a closed chamber known as the mixing chamber.
- 6. Abrasive Jet MachiningEquipment • The abrasive particles enter the chamber from a hopper through a metallic sieve.. • The mass flow rate of abrasive (15 gm/min) entering the chamber depends on the amplitude of vibration of the sieve and its frequency • The abrasive particles are then carried by the carrier gas to the machining chamber via an electro-magnetic on-off valve. • The machining enclosure is essential to contain the abrasive and machined particles in a safe and eco-friendly manner. • The machining is carried out as high velocity (200 m/s) abrasive particles are issued from the nozzle onto a work piece traversing under the jet.
- 7. Abrasive Jet Machining Gas supply Pr. Regulators Abrasive powder Nozzle
- 8. Process Parameters and Machining Characteristics • The process parameters are listed below: • Abrasive ⎯ Material – Al2O3 / SiC / glass beads ⎯ Shape – irregular / spherical ⎯ Size – 10 ~ 50 μm ⎯ Mass flow rate – 2 ~ 20 gm/min • Carrier gas ⎯ Composition – Air, CO2, N2 ⎯ Density – Air ~ 1.3 kg/m3 ⎯ Velocity – 500 ~ 700 m/s ⎯ Pressure – 2 ~ 10 bar ⎯ Flow rate – 5 ~ 30 lpm
- 9. • Abrasive Jet ⎯ Velocity – 100 ~ 300 m/s ⎯ Mixing ratio – mass flow ratio of abrasive to gas – ⎯ Stand-off distance – 0.5 ~ 5 mm ⎯ Impingement Angle – 600 ~ 900 • Nozzle ⎯ Material – WC / sapphire ⎯ Diameter – (Internal) 0.2 ~ 0.8 mm ⎯ Life – 10 ~ 300 hours The important machining characteristics in AJM are • The material removal rate (MRR) mm3/min or gm/min • The machining accuracy • The life of the nozzle
- 10. • Applications • For drilling holes of intricate shapes in hard and brittle materials • For machining fragile, brittle and heat sensitive materials • AJM can be used for drilling, cutting, deburring, cleaning and etching. • Micro-machining of brittle materials • Limitations • MRR is rather low (around ~ 15 mm3/min for machining glass) • Abrasive particles tend to get embedded particularly if the work material is ductile • Tapering occurs due to flaring of the jet • Environmental load is rather high.