Electron beam welding is so clever that many people dont appreciate its potential. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. 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. Electron beam welding an overview sciencedirect topics. Subscribers can view annotate, and download all of saes content. Electronbeamwelding ebw is the first and foremost high energy density process. Electron beam welding is, like laser welding, a power beam process ideally suited to the welding of close square joints in a single pass. Seminar on underwater welding report and ppt download. It has already a long history of successful applications in a large range of different fields, like aerospace and nuclear but also for general use for most exacting requirements. Electron beam welding technology can be also adopted for the high or ultrahigh strength steel. Electron beam welding pdf brochure andrews hitec corp. A shielding gas may be used during the welding process in order to prevent the wp from oxidation. Comparisons of electron beam, laser beam and plasma arc welding inti6al4v alloy should be extended to include an evaluation of fatigue characteristics. Steigerwald conceived and developed the first practical electronbeam welding machine.
Electron beam welded joints shall meet the requirements of the applicable engineering drawing. Ebw is often performed under vacuum conditions to prevent dissipation of the electron beam. The fillet weld joint design is generally useful in thicknesses up to 0. Click here to download our free electron beam welding guide now. Electron beam welding ebw is a fusion welding process in which a beam of highvelocity electrons is applied to two materials to be joined. The answer to this question depends on the welding application. The beam of electrons creates kinetic heat as it impacts with the workpieces, causing them to melt and bond together. The reputation of electron beam welding llc for excellence and competence remains the cornerstone for continued growth. A selected aerospace structure f14 wing beam was successfully sseb welded, thus demonstrating equipment capability to fabricate production parts. Plasma arc welding thermit welding electron beam welding friction welding diffusion welding submerged arc welding submerged arc welding saw is a common arc welding process. Berger 7, where joining between these two materials by manual arc welding with rod electrodes mmaw and gas metal arc welding gmaw was investigated.
Electron beam welding process equipments, working principle with diagram. Standard hardness and conductivity inspection of wrought aluminum alloy parts. A leading edge electron beam welding company since 1966, we partner with our customers to provide high performance quality results. Ptr is an electron beam welding systems manufacturer and contract welding service provider on the leadingedge of electron beam and vacuum welding technology.
The beam is very narrow and the heat affected zone is minimized. The penetration of the weld can be precisely adjusted from near zero to as much as 6 inches. The laser beams have enough energy and when it strikes the metal pieces produce heat that melts the material from the two metal pieces and fills the cavity. A few authors presented interesting results on beam welding of high or ultrahigh strength steel. Today, even specialists have difficulty in appreciating the wide field of use of electron beam welding in materials processing.
May 01, 2016 electron beam welding, despite a long history and widespread arc and laser technology, is still widely used in industry. Welding of thick to thin material and dissimilar metals is easily accomplished. Electron beam welding electron beam engineering, inc. The use of filler materials in electron beam welds shall be permitted when certified filler wire is used. When you visit our location we have a physical copy of our andrews hitec corporation brochure.
May 04, 2017 it is used to design the job for welding. Provides process definitions and requirements, safe practices, and inspection criteria for electron beam welding. The behaviour of the electron beam on penetrating metal. Weld pool has the shape char acteristic for arc welding processes. Electron beam welding for fatigue critical applications ams2680 this specification defines the procedures and requirements for joining metals and alloys using the electron beam welding process. This high speed stream of electrons is tightly focused using magnetic fields and applied to the materials to be joined. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact. Click into each industry and explore a few of our welding case studies to learn more about some of these electron beam welded applications. Electron beam welding ebw applications by industry ptr. If this technology is downscaled to a microlevel i. Electronbeam welding ebw is a fusion welding process in which a beam of highvelocity. The higher the potential difference, the higher would be the acceleration of the electrons. Numerical simulation of heat transfer and fluid flow.
Schultz, electron beam welding, is an excellent technical reference for anyone involved in ebw whether just beginning to weld or currently experienced with eb welding. Seminar on underwater welding report and ppt download introduction to underwear welding underwater welding is an important tool for underwater fabrication works. The main applications for this high efficiency welding process are. Electron beam welding is a fusion welding process in which a beam of highvelocity. The laser beams are focused to the cavity between the two metal pieces to be joined. Electrons hit the workpiece and their kinetic energy is transformed to the thermal energy heating the metal so that the sides of the workpiece can be joined and a weld can be formed after freezing. Oct 31, 2014 electron beam welding is a fusion welding process in which a beam of highvelocity electrons is applied to the material to be joined. Electron beam welding ebw and laser beam welding lbw are two very popular methods of joining multiple metallic components. Electron beam welding ebw is a suitable technology, which meets this requirement.
Additionally, eb welding is excellent for joining dissimilar and hard to weld metals. Noone has more experience or expertise in the application of electron beam welding than electron beam processes. Abstractelectron beam welding ebw is a wellestablished joining. Electron beam welding ebw is a wellestablished joining method in the field of manufacturing. Electron beam welding parts, working, applications with pdf. Laser welding technology electron beam engineering, inc. Recommendations for further improvement or refinement of the sseb welding equipment are included. 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. Materials considered difficult to weld by conventional processes may often be.
Electron beam welding ebw is the first and foremost high energy density process. By defocusing the beam, the fillet weld may be enlarged and will present a smoother surface. Dissimilar electron beam welding of nickel base alloy 625. An electron beam welding machine comprises an electron gun including a first beam adjusting means, a second beam adjusting means disposed spaced from the first beam adjusting means so as to be movable in the direction of an electron beam path, and position adjusting means for adjusting the position of the second beam adjusting means through rotary movement about an axis perpendicularly. Electron beam welding associates specializes in electron beam welding services. At low beam power densities eb unit operates in shallow penetration mode. Welding industry electron beam welding for standard metals, challenging materials and high loadbearing components. Eb welding permits joining of reactive and refractive materials. Electrons hit the workpiece and their kinetic energy is transformed to the thermal energy heating the metal so that the sides of the workpiece can be joined and a weld can be formed after freezing the electron beam welding is also a liquid state welding process. This specification on electron beam welding discusses applicable specifications, safety, requirements, fabrication, quality examination, equipment calibration and maintenance. Cottrell engineering consultant, manor bungalow, souldern, bicester, oxon. In this process, electrons are emitted from the heated filament called electrode. Electron beam welding for fatigue critical applications. The cathode is generally made of tungsten or tantalum.
Electron beam welding at atmospheric pressures download pdf info publication number us32175a. We can provide electron beam welding support and a quote for your indevelopment product. The workpiece melt as the kinetic energy of the electrons is transformed into heat upon impact. Electron beam welding ebw is a highenergy density fusion process that is accomplished by bombarding the joint to be welded with an intense strongly focused beam of electrons that have been accelerated up to velocities 0. Until then, you can download it to your computer as a pdf file 1. In addition to making eb and laser welding equipment, ptr assists customers with weld process development and provides maintenance. Electron beam welding process, applications and equipment. 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 welding technology electron beam engineering, inc. Further, the beam needs to be manoeuvred if required by the gun. Please enter the required information into the form below to begin your download. Electronbeam welding ebw is a fusion welding process in which a beam of highvelocity electrons is applied to two materials to be joined. A 2 m3 chamber, 100 kw, electron beam welding machine, showing the open vacuum chamber. Electron beam welding ebw, which is a processing method used in a vacuum environment with a high energy density, a high welding speed and a narrow heataffected zone, has become a new technique to guarantee highquality welded joints 1,2. We are nadcap approved, iso certified, and air agency certified. High energy beam welding electron beam welding a highvelocity, narrow beam electron converting into heat to produce a fusion weld in a vacuum multiple degrees of vacuum from foil to plate as thick as 150mm very small heat effected zone power density laser beam welding.
Distortion and metallurgical effects are much less than other types of welding such as tig and mig. Around the world, automobiles on the road have components that were manufactured using eb welding. The commercial application of electron beam welding ebw was. Due to current capacity constraints, printed versions of our publications including standards, technical papers, edge reports, scholarly journal articles, books, and paint chips may experience shipping delays of up to four to six weeks. Laser beam welding equipment, principle, working with.
Laser beam welding is a fusion welding process in which two metal pieces are joined together by the use of laser. Electron beam welding parts, working, applications with. Electron beam welding eb welding services eb industries. Electron beam welding ebw of titanium alloy ti6al4v is not an easy task and. Eb industries is the preeminent electron beam welding services provider throughout the united. Electron beam welding ebw process was employed autogenously to fabricate 12 mm and 18 mm thick fullpenetration butt welds of 2205 duplex stainless steel. Electron beam welding of copper using plasma spraying for filler. Electron beam welding is ideal when your application requires a very precise, clean weld with minimal heating of the material outside the primary area of the weld. Quality levels and acceptable variations in electron beam welds. However, the concentrated heat input of ebw results in. Leadingedge eb welding since 1966 electron beam welding, llc.
Pdf electron beam welding, despite a long history and widespread arc and laser technology, is still widely used in industry. Electron beam welding, despite a long history and widespread arc and laser technology, is still widely used in industry. Electron beam welding is a welding process that uses the heat produced by a beam of high energy electrons. Comparisons of electron beam, laser beam and plasma arc welding should be extended to other important aerospace construction materials. Electron beam welding is preferred for manufacturing highvalue welds. Click here to download sciaky product sheets and watch videos about our ebam metal 3d printing process and electron beam welding solutions. As an introduction, a number of the special characteristics of electron beam welding are summarised and discussed in greater detail in the following sections.
Laser beam machining is a thermal machining process which uses laser beam to produce heat. In recent years the number of offshore structures including oil drilling rigs, pipelines, platforms are being installed significantly. Tensile, fatigue and fracture toughness results are presented for a welded wing beam. This article throws light upon the seven main equipments required for electron beam welding ebw. If you are at the beginning of a project, we can provide help with prototype testing and. The fiberglass that insulates homes was produced on machines with precision electron beam drilled holes. Electron beam welding experts electron beam processes. 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. These electrons are accelerated by applying high potential difference 30 kv to 175 kv between cathode and anode. Electron beam welding is a fusion welding process in which a beam of highvelocity electrons is applied to the material to be joined.
Mar 22, 2017 electron beam welding process is carried out in vacuum. If you are starting a new project, we can help with electron beam welding joint design, qualification requirements, and testing. Since the machine is programmable, it is possible to have custom. Unlike the laser beam, however, the electron beam process utilises a vacuum chamber in which is generated a highenergy density beam of electrons of the order of 0. Eb welding 6 eb welding thanks to the maximum power density, the electron beam generates very narrow. Electron beam welding ebw is fusion welding technology. Electronbeam welding1 welding, brazing and soldering. The fourychamber indexing machine was originally intended for application in electron beam welding and was, in a cooperation with the isf, adapted for laser. 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.
313 1270 1121 123 750 481 996 1084 197 428 149 438 1357 1065 1008 1435 996 1300 697 666 830 1306 956 398 527 349 320 1343 918 609 444 572 534 986 368 1160