Ppt electron beam welding powerpoint presentation, free. Electron beam, laser beam and plasma arc welding studies by c. Introduction electronbeam welding is fusion welding process in which a beam of high velocity electrons is applied to two materials to be joined. Ebw is often performed under vacuum conditions to prevent dissipation of the electron beam. Electron beam welding process is a fusion welding process in which a highvelocity electron beam is used to join two metals together. Electron beam welding process, applications and equipment ptr. Within the gbt group, steigerwald strahltechnik gmbh is the specialist for chamber machines designed for electron beam welding and electron beam drilling purposes, as well as for eb. Electron beam eb welding is often chosen over convention methods and has many advantages.
Cottrell engineering consultant, manor bungalow, souldern, bicester, oxon. This high speed stream of electrons is tightly focused using magnetic fields and applied to the materials to be joined. View history of welding ppts online, safely and virusfree. In extreme working conditions, the rapid temperature increase can even lead to evaporation, making an electron beam an excellent tool in heating applications, such as welding. Pep offers fully cnc or manual electron beam manufacturing for delicate parts.
Electron beam welding free download as powerpoint presentation. In fact, an electron beam welding system can throw enough power to simply vaporize metal a process. Ppt friction welding powerpoint presentation free to. Electronbeam welding ebw is a fusion welding process in which a beam of highvelocity electrons is applied to two materials to be joined. In this operation, electric resistance is generated to the flow of current that generates heat energy between two contacting surfaces that are held in pressure. The behaviour of the electron beam on penetrating metal. The main applications for this high efficiency welding process are. This article throws light upon the seven main equipments required for electron beam welding ebw.
The electrons are accelerated from the source with high voltage potential between a cathode and anode. It is often used in unrestrained parts to prevent openingup of the seam as full penetration welding progresses. Eb industries is the preeminent electron beam welding services provider throughout the united states, canada and mexico, since 1965. Feb 12, 2014 electron beam welding vs laser welding advantages and disadvantages by eb industries duration. Specialist in electron beam welding large and small part capability. Electron beam welding ebw electron beam welding ebw is a fusion welding process in which a beam of highvelocity electrons is applied to the materials being joined. The electron beam welding ebw and laser beam welding lbw processes are highenergy density welding processes that offer several possible advantages, including low welding heat. These welders feature working vacuum chambers ranging from a few liters up to hundreds of cubic meters, with electron guns carrying power of up to 100 kw. Leadingedge eb welding since 1966 electron beam welding, llc. Its precise, high strength nature is wellsuited for durable biocompatible metal instruments that are used in challenging intraoperative environments. Dec 12, 2019 laser beam welding is a technique in manufacturing whereby two or more pieces of material usually metal are joined by together through use of a laser beam. Our electron beam welding services have produced millions of parts, and our customers range from small manufacturers to some of the biggest companies in the aerospace, medical and energy industries. May 01, 2016 electron beam welding, despite a long history and widespread arc and laser technology, is still widely used in industry. If you need faa repair station welding, micro welding, fusion welding, vacuum chamber welding, high purity welding, high energy welding, low distortion welding, biomedical device welding, dissimilar metal welding, then visit our website today.
Electron beam lithography is a direct writing modus operandi and differs significantly from the photolithography. It is a timeconsuming serial process and an expensive technique. A leading edge electron beam welding company since 1966, we partner with our customers to provide high performance quality results. The higher the potential difference, the higher would be the acceleration of the electrons. View electron beam machining process ppts online, safely and virusfree. Power beam welding laser and electron beam has been used for several years to weld aircraft engine components. It is a noncontact process that requires access to the weld zone from one side of the parts being welded. Since the beginning of electron beam welding on an industrial scale at the end of the 1950s, countless electron beam welders have been designed and are being used worldwide. Electron beam welding ebw and laser beam welding lbw. The beam of electrons creates kinetic heat as it impacts with the workpieces, causing them to melt and bond together.
Ebw has unique abilities for welding dissimilar metals, complex or curved components and precision parts. If you are at the beginning of a project, we can provide help with prototype testing and. It can used for joining ferrous metals, light metals, precious metals, and other alloys to. Produces coalescence of materials by heating them to the welding temperature. Electron beam welding, laser beam welding, and laser hermetic sealing supplier in north america. The cathode is generally made of tungsten or tantalum. Electron beam welding process a with preheating or postweld heat treatment, b with preheating and postweld heat treatment, c with heat treatment conducted outside the weld axis d exemplary geometrical dimensions of the additional beam. The power delivered by an electron beam can be massiveto 10,000 kwmm 3. Ptr is an electron beam welding systems manufacturer and contract welding service provider on the leadingedge of electron beam and vacuum welding technology. Oct 27, 2010 from chambers measuring 1 cubic foot to the largest eb welder on the east coast, ebtecs electron beam welding services handle fabrication challenges with precision and speed.
Electronbeam welding article about electronbeam welding. Ppt friction welding powerpoint presentation free to download id. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact. Tack welding with the electron beam is generally useful as a fixturing aid. Even today, new applications are being developed and used industrially, especially where other beam processes reach their limits. The laser provides a concentrated heat source, which allows the metal to be rapidly brought to its liquid state temperature.
Electron beam welding ebw has been used as a fusion joining process in industrial applications for over 40 years. The beam is directed by magnetic forces of focusing and deflecting coils. Mar 22, 2017 electron beam welding process is carried out in vacuum. Electron beam machining ebm introduction electron beam machining is a thermal process used for metal removal during the machining process. If you are starting a new project, we can help with electron beam welding. Electron beam engineering provides electron beam welding services and laser welding services throughout the u. The growth of yb fibre lasers over the last 5 years has radically changed. Friction welding is a solid state joining process that produces coalescence by the heat developed between two surfaces by mechanically induced surface motion. Electron beam welding is a machine controlled process, with welding carried out in vacuum with no filler material, resulting in exceptional weld quality and repeatability. Further, the beam needs to be manoeuvred if required by the gun.
Electron beam welding, despite a long history and widespread arc and laser technology, is still widely used in industry. Electron beam welding vs laser welding advantages and. Electron beam welding drastically expands where welds can be created and the strength and quality of those welds. A tungsten or molybdenum filament is containing with cathode and emit. Electron beam technology is used worldwide with an increasing tendency. The factors affecting intergranular liquation cracking susceptibility in electron beam welds were investigated for cast alloy 718. In order to solve these problems, many welding methods have been practiced to investigate the joining between titanium alloys and stainless steels, mainly including brazing welding 7, 1620, laser welding 2, 5, 6, 2125, electron beam welding 2631, diffusion bonding 3236, explosive welding 3740, and friction stir welding 4147.
Quality levels and acceptable variations in electron beam welds. Today we will learn about electron beam welding, principle, working, equipments, application, advantages and disadvantages with its diagram. Stohrs presentation on the results of practical electron beam welding of zirconium. Electron beam and laser beam welding are very similar processes but with some critical differences that might make a big difference when it comes. The process of lbw consists of a focused beam of photons that are directed to the surface of the part to be welded. Electron beam welding eb welding services eb industries. Narrow beams of electrons carrying high kinetic energy can be formed, which upon collision. Pdf electron beam welding, despite a long history and widespread arc and laser. Free electrons in vacuum can be accelerated, with their paths controlled by. Electron beam welding laser welding services eb industries.
Electron beam welding associates specializes in electron beam welding services. Principle electron beam welding ebwis a fusion welding process in which a beam of high velocity electrons is applied to the materials being joined. This specification on electron beam welding discusses applicable specifications, safety, requirements, fabrication, quality examination, equipment calibration and maintenance. In addition to making eb and laser welding equipment, ptr assists customers with weld process development and provides maintenance and spares support for electron beam welding systems. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. We are known for our outstanding quality and fast turnaround, and our technical staff is always available for consultation.
Electron beam technologies has three electron beam irradiation lines which are capable of producing electron beam energies from 425,000 volts up to. In the electron beam machining process, a high velocity focused beam of electrons are used to remove the. Electron beam welding process is carried out in vacuum. Electron beam welding services ptrprecision technologies, inc. Electron beam eb welding is a fusion welding process whereby electrons are generated by an electron gun and accelerated to high speeds using electrical fields.
Resistance welding is a process used to join metallic parts with electric current. Ptr is a nadcap certified supplier of eb job shop services offering its customers a wide range of electron beam processing capabilities, including 60 kv, 150 kv and partial or high vacuum. Free electrons in vacuum can be accelerated, with their paths controlled by electric and magnetic fields. Electrons are accelerated by a high difference electrical potential and concentrated on a target. In this process, electrons are emitted from the heated filament called electrode. Electron beam welding laser beam welding power supply for resistance welding power supply for arc welding comparison between resistance and arc welding. Tack welds are made at less than the power needed for full penetration 20% to 40%.
Electron beam welding pep precision engineered products. Electron beam machining ebm diagram, working, advantages. The materials used were asreceived plates and heattreated plates with three different levels of grain size. Electron beam welding is a fusion welding process in which a beam of high velocity electrons is applied. Electron beam welding working principle your electrical. Oxyfuel gas welding is a welding operation in which heat is generated by a hot flame generated mixture gas of oxygen and acetylene. The stream of electrons then pass through a hole in the anode. Electron beam welding electron beam engineering, inc. Electron beam welding ebw is a fusion welding in which coalescence is produced. Electron beam welding ebw is a fusion welding process in which a beam of highvelocity electrons is applied to two materials to be joined. Electron beam engineering provides precision electron beam welding and laser beam welding services throughout the united states and europe, specializing in working with complex components. The electron s kinetic energy is then transformed, for the most part, into thermal. Electron beam welding advantages,disadvantages and. There are several forms of resistance welding, including spot welding, seam welding, projection welding, and butt welding.
Electron beam welding process, applications and equipment. Electron beam engineering provides services throughout the u. Electron beam machining equipment the basic functions of any electron beam gun are to generate free electrons at the cathode, accelerate them to a sufficiently high velocity and to focus them over a small spot size. Electron beam welding advantages,disadvantages and application introduction to e beam welding. Electron beam welding is preferred for manufacturing highvalue welds. Laser stands for l ight a mplification by s timulated e mission of r adiation. The reputation of electron beam welding llc for excellence and competence remains the cornerstone for continued growth. Liquation cracking susceptibility in haz was evaluated by a beadonplate test and a restraintrelaxation utype hot cracking test. Aug 08, 20 electron beam welding laser beam welding power supply for resistance welding power supply for arc welding comparison between resistance and arc welding 3. The electron beam gun has a tungsten filament which is heated, freeing electrons. The electron beam as a tool is the business basis of all company units of global beam technologies ag. Ever since its first use in the nuclear and aerospace industry, it has been. Electron beam welding working principle electron beam welding in vacuum utilizes the kinetic energy of electrons traveling with high velocity in a high vacuum 103 to 105 mm hg. Friction welding, radial friction welding, friction stir welding.
Please give us a call or email us through the contact form. We are nadcap approved, iso certified, and air agency certified. For electron beam lithography a focused electron beam is scanned over a substrate covered with an electron sensitive resist. Electron beam welding cambridge vacuum engineering. In electronbeam welding, the workpiece is bombarded with a dense stream of highvelocity electrons.
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