Iwt unit 5 electron beam welding sushant bhatt
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Electron beam welding is a fusion welding process that uses a beam of high-velocity electrons to join materials. The process works by accelerating electrons in an electron gun and focusing them via magnetic lenses to produce heat from kinetic energy. This heat is used to fuse materials in a vacuum chamber. Key advantages are the ability to weld dissimilar metals without filler and produce high quality, low defect welds. However, the process requires expensive equipment and high skill levels.
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Electron Beam Welding
The document discusses electron beam welding (EBW), a fusion welding process that uses a beam of high-velocity electrons to melt materials being joined. It describes how EBW machines work by accelerating electrons via high voltage to concentrate their kinetic energy on a target. The document classifies EBW machines, explains their components and principles, and discusses process parameters, applications, advantages, and fields of EBW use, noting it can join a variety of materials with high precision and fewer defects compared to arc welding.
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One of the welding processes that used in Engineering field is the electron beam welding. There are several types of welding processes similar to this, but electron beam welding has its unique features.
Thanks for the colleagues who give this slides to publish.
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Electron beam welding is a fusion welding process that uses a beam of high-velocity electrons to join materials. The kinetic energy of the electrons is transformed into heat upon impact, melting the workpieces. It provides high quality welds with minimal heat input and distortion. The process occurs in a vacuum chamber to eliminate impurities and the need for shielding gases. It is well-suited for difficult welds and can achieve very narrow, deep welds at high welding speeds.
Electron Beam Welding
The document discusses electron beam welding (EBW). EBW uses a beam of high velocity electrons to melt and join materials in a vacuum. The electron beam is produced by heating a tungsten filament in an electron gun. The beam is focused using electromagnetic coils to a diameter of 0.25-1mm and power density of 10kW/mm2. EBW can weld almost any material combination and produces a narrow heat affected zone and deep penetration. It is useful for welding in applications like aerospace, medical devices, electronics and automotive transmissions.
ELECTRON BEAM WELDING (EBW) PPT
ELECTRON BEAM WELDING (EBW) PPTANKIT SAXENA Asst. Prof. @ Dr. Akhilesh Das Gupta Institute of Technology and Management, New Delhi
Electron Beam Welding is a fusion welding process in which a beam of high-velocity electrons is applied to the material to be joined. The work-piece melt as the kinetic energy of the electrons is transformed into heat upon impact. The EBW process is well-positioned to provide industries with highest quality welds and machine designs that have proven to be adaptable to specific welding tasks and production environments.Laser beam welding
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arc welding
Electric arc welding is a process that joins metals by heating them with an electric arc between an electrode and the metals. It is one of the most common welding processes and uses a consumable electrode coated in flux to lay the weld. The electric arc melts the tip of the electrode and filler metal is deposited into the weld pool while the flux provides shielding from contamination and leaves a slag layer. Proper welding techniques along with the right equipment, electrodes, and power source are required to perform arc welding.
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One of the welding processes that used in Engineering field is the electron beam welding. There are several types of welding processes similar to this, but electron beam welding has its unique features.
Thanks for the colleagues who give this slides to publish.
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Electron Beam Welding is a fusion welding process in which a beam of high-velocity electrons is applied to the material to be joined. The work-piece melt as the kinetic energy of the electrons is transformed into heat upon impact. The EBW process is well-positioned to provide industries with highest quality welds and machine designs that have proven to be adaptable to specific welding tasks and production environments.Laser beam welding
This presentation discusses laser beam welding (LBW), including what a laser beam is, its properties, types of lasers, the LBW process, principles of operation, mechanics, parameters, advantages, and limitations. A laser beam is a powerful, narrow, monochromatic beam created when atoms in a lasing medium are excited by a flash tube, emitting photons. LBW uses the concentrated heat from a laser beam to fuse metals together without filler material. It offers advantages like narrow welds, low distortion, and the ability to weld dissimilar and high-alloy metals. However, it also has high costs and limitations such as difficulty welding thick joints.
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Electron beam machining
basic principle of working of the electron beam machining.
how the machining takes place and but are the main things to remember.
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This document is a seminar report submitted by Dipendra Singh to partially fulfill the requirements for a Bachelor of Technology degree. It discusses eddy current brakes, which use electromagnetic induction to generate opposing eddy currents in a conductor to produce a braking force. The report covers the basic principles of operation, construction details involving a stationary magnetic field system and rotating part, working mechanisms where cutting the magnetic field induces eddy currents, types including electrically excited and permanent magnet varieties, requirements, advantages, and applications such as in trains.
An overview of the Electric Discharge Machine (EDM), its main parameters to ...
In this ppt a brief description about the EDM technology is mentioned. here the introduction to basic edm technology, the principle behind the process and advantages are mentioned. the reason why EDM technology was adopted over conventional methods is also clearly mentioned with suitable points. different types of EDM technology are also mentioned along with diagrams so, that the technology is easily understandable. the various response variables which are analysed in this technology are also clearly given. different components which are required in the basic EDM technology are also described here and how the input parameters effect these response variables are given. Discussion about how the powder mixing was effective in comparison to normal EDM technology. different parameters like particle size, particle concentration and particle type is described. properties of dielectric fluid is also mentioned properly and selection of correct fluid and reasons are clearly mentioned.
Electrical discharge machining
The document discusses Electrical Discharge Machining (EDM). EDM is a manufacturing process where a desired shape is obtained by removing material from a workpiece using electrical discharges between two electrodes separated by a dielectric liquid. As the distance between the electrodes is reduced, current flows due to dielectric breakdown causing material removal from both electrodes. EDM was invented in the 1940s and has since improved, increasing machining speeds and reducing costs. EDM can machine hard metals and intricate shapes without needing to soften the material. The main components of an EDM system are the power supply, dielectric medium, workpiece and tool electrodes, and servo control unit. Material is removed through the formation and collapse of plasma channels between the electrodes during
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Iwt unit 5 electron beam welding sushant bhatt
- 1. ELECTRON BEAM WELDING Er. Sushant Bhatt, Lecturer, Deptt. Of Mechanical Engg. (IDS) Email: sushantbhatt.ids@srmu.ac.in Er. Arvind Verma, HoD, Deptt. Of Mechanical Engg. (IDS) Email: hod.dip.me@srmu.ac.in Shri Ramswaroop Memorial University, Barabanki, 225003
- 2. “Electron-Beam welding (EBW) is a fusion welding process in which a beam of high- velocity electrons is applied to two materials to be joined.” https://images.app.goo.gl/gc3fEssDfo34uL469 Electron Beam welding
- 3. This heat is further used to weld two welding plates. When a high jet of electrons strike at welding plates, its kinetic energy converts into heat energy. This heat energy is sufficient to fuse two metal plates together to form a weld joint. https://images.app.goo.gl/TRh3g2CpTqKt4P7YA This process uses kinetic energy of electrons to produce heat.
- 4. Power Supply: This process uses a power source to supply continuous beam of electrons for welding process. The voltage range of welding is about 5 – 30 kV for low voltage equipment’s or for thin welding and 70 – 150 kV for high voltage equipment’s or for thick welding. Electron Gun: It is heart of electron beam welding. It is a cathode tube (negative pole) which generates electrons, accelerate them and focus it on a spot. This gun is mostly made by tungsten or tantalum alloys. The cathode filament heated up to 2500 degree centigrade for continuous emission of electrons. Equipment’s
- 5. Equipment’s Anode: Anode is a positive pole which is just after the electron gun. Its main function is to attract negative charge, (in this case electron) provide them a path and don’t allow them to diverge from its path. Magnetic Lenses: There are a series of magnetic lenses which allows only convergent electrons to pass. They absorb all low energy and divergent electrons, and provide a high intense electron beam. Electromagnetic lens and deflection coil: Electromagnetic lens used to focus the electron beam on work piece and deflection coil deflect the beam at required weld area. These are last unit of EBW process.
- 6. Equipment’s Work holding device: EBW uses CNC table for hold work piece which can move in all three direction. The welding plates are clamped on CNC table with the use of suitable fixtures. Vacuum Chamber: This process takes place in a vacuum chamber. Vacuum is created by mechanical or electric driven pump. The pressure ranges in vacuum chamber is about 0.1 to 10 Pa.
- 7. First the electron gun, which is a cathode, produces electrons. These electrons move towards anode which is positive charged and placed right after electron gun. The anode accelerates the electrons and form a electron jet which is further move towards magnetic lenses. Working Principle
- 8. The magnetic lenses are a series of lenses which are used to absorb low energy electrons and does not allow to divergent electron to passes through it. It provides a high intense electron jet. Now this electron beam passes through electromagnetic lens and defecting coil which are used to focus and deflect the electron beam at the required spot. Working Principle
- 9. This unit direct high velocity electron beam to the weld cavity where its kinetic energy converts into heat energy due to collision. This heat energy is used to create weld by fusion. This whole welding process carried out in a vacuum chamber otherwise the electrons collides with air particle in the way and loses its energy. Working Principle
- 10. Advantages: It can weld both similar and dissimilar metals. It provides high metal joining rate. Low operating cost because no filler material and flux are used. It provide high finish welding surface. It can used to weld hard materials. Less welding defects occur due to whole process carried out in vacuum. Advantages and Disadvantages
- 11. Disadvantages: High capital or set up cost. High skilled labor required. Frequently maintenance required. Work pieces size is limited according to vacuum chamber. It cannot do at site due to vacuum. Advantages and Disadvantages
- 12. It is used in aerospace industries and marine industries for structure work It is used to join titanium and its alloy. This type of welding is widely used to join gears, transmission system, turbocharger etc. in automobile industries. It is used to weld electronic connectors in electronic industries. This process is also used in nuclear reactors and in medical industries. APPLICATIONS
- 13. A Textbook of Welding Technology by O.P. Khanna. Welding Science and Technology by Md. Ibrahim Khan. https://www.theweldingmaster.com https://www.mech4study.com https://www.safetyandhealthmagazine.com https://images.app.goo.gl/TRh3g2CpTqKt4P7YA References
- 14. THANK YOU