ebw in Chinese : 电子束焊…. The volume density of power in the small volume in which the kinetic energy of the electrons is transformed into heat can reach values of the order 105 – 107 W/mm3. First of all, the process for a "single" electron can be considered. Working chamber, mostly evacuated to "low" or "high" vacuum. This is commonly accomplished mechanically by moving the workpiece with respect to the electron gun, but sometimes it is preferable to deflect the beam instead. In a similar mode the fine computer-controlled beam can "write" or "draw" a picture on the metal surface by melting a thin surface layer. Workpiece manipulator (positioning mechanism). To explain the capability of the electron beam to produce deep and narrow welds, the process of "penetration" must be explained. In the case of very high power density, the beam (well focused) penetrates deeper, in proportion to its total power. Free electrons in vacuum can be accelerated, with their paths controlled by electric and magnetic fields. Contextual translation of "mieliestronk oor ebw" into English. Since the appearance of the first electron-beam welding machines at the end of the 1950s, the application of electron-beam welding spread rapidly into industry and research in all highly developed countries. : 1 [A Psalm] of David. ebbing away (also: fading away, abating, dying away, dying down) EBW Gr 7 Kwartaal 3 10 Terms. In most of them the welding takes place in a working vacuum chamber in a high or low vacuum environment. This technology cannot be applied to materials with high vapour pressure at the melting temperature, like zinc, cadmium, magnesium and practically all non-metals. Due to this effect, the electron beam converges to some minimal diameter in a plane close to the anode. At least this part of electron gun must be evacuated to "high" vacuum, to prevent "burning" the cathode and the emergence of electrical discharges. As a source of electrons for electron-beam welders, the material must fulfill certain requirements: These and other conditions limit the choice of material for the emitter to metals with high melting points, practically to only two: tantalum and tungsten. EBWE is a world leader in LED circuit boards and LED applications, specializing in design and electronic manufacturing of printed circuit board assemblies. Oxford English and Spanish Dictionary, Thesaurus, and Spanish to English Translator Leggere alcuni dei "Eww, Gli … Since the publication of the first practical electron-beam welding equipment by Steigerwald in 1958, electron-beam welding has spread rapidly in all branches of engineering where welding can be applied. ב אַשְׁרֵי אָדָם--לֹא יַחְשֹׁב יְהוָה לוֹ עָוֺן; וְאֵין בְּרוּחוֹ רְמִיָּה. Electron-beam welding can never be "hand-manipulated", even if not realized in vacuum, as there is always strong X-radiation. TSnyman. EBW and Raby hope the next phase is to tell this story in a documentary form, possibly a series. With rising voltage the technical problems and the price of the equipment rapidly increase, hence, whenever it is possible a lower voltage of about 60 kV is to be chosen. At lower values of surface power density (in the range of about 103 W/mm2) the loss of material by evaporation is negligible for most metals, which is favorable for welding. In sekere sin was daardie kwitansie jou eiendomsbewys, jou waarborg dat jy sal ontvang wat jy gekoop het. The fast deflection system can also be applied (if provided with appropriate electronics) for imaging and engraving. click for more detailed Chinese translation, definition, pronunciation and example sentences. Ebw (English to English translation). A general rule for construction of joints to be made this way is that the part with the lower melting point should be directly accessible for the beam. Biologie 58 Terms. This effect is a force proportional to the induction B of the field and electron velocity v. The vector product of the radial component of induction Br and axial component of velocity va is a force perpendicular to those vectors, causing the electron to move around the axis. The effect of the electron beams under such circumstances depends on several conditions, first of all on the physical properties of the material. Highlight or Bookmark your favourite verses, make Verse Images that you can share, and attach public or private Notes to Bible passages. EBW & it’s Principle Electron beam welding (EBW) is a fusion welding process in which a beam of high velocity electrons is directed to the materials being joined. Translation of Ebw in English. Read through a few of the "Eww, Android users in my Instagram feed!" In the electron gun, the free electrons are gained by thermo-emission from a hot metal strap (or wire). English. In welders with electron beams of high enough power, welds up to 300 mm deep can be realized. Another potential danger is the emergence of cracks in the weld. receipt noun. The electron beam welding (EBW) and laser beam welding (LBW) processes are high-energy density welding processes that offer several possible advantages, including low welding heat input, high weld depth-to-width ratio, narrow heat-affected zone (HAZ), and reduced distortion. Power supply and control and monitoring electronics. Found 38 words containing ebw. Human translations with examples: corn cobon ems. This can be accomplished by a magnetic field produced by electric current in a cylindrical coil. Not all materials can be welded by an electron beam in a vacuum. The maximum power of the high voltage supply depends on the maximum depth of weld required. Start a Conversation. This effect is of course not as substantial as in arc welding. Learn the translation for ‘ebw’ in LEO’s English ⇔ German dictionary. Plus, EBW Global knowledge library with its case studies, white papers, tools and programme templates enable you to quickly create the business case to show senior leaders and budget holders why investing in Business Emotional Intelligence will solve their people issues. Human translations with examples: corn cobon ems. The final effect of the beam depends on the particular combination of these parameters. The workpieces melts as the kinetic energy of the electrons is transformed into heat upon impact. The consequences of weld contraction should always be considered when constructing the parts to be welded. This allows for a very high volumetric power density, which can reach values of the order 10, to achieve high power density in the beam, the emission. © 2013-2020 Reverso Technologies Inc. All rights reserved. As detailed discussion of this matter exceeds the scope of this article, the reader is recommended to seek more information in the appropriate literature.[2]. The appropriate width of the strip depends on the highest required value of emission current. Goedere en dienste In this way narrow beams of electrons carrying high kinetic energy can be formed, which upon collision with atoms in solids transform their kinetic energy into heat. The electron gun also needs low-voltage supplies for the correction system, the focusing lens, and the deflection system. GR.8. Depending on conditions, the intensity of evaporation may vary, from negligible to essential. After passing the focusing lens, the beam can be applied for welding, either directly or after being deflected by a deflection system. א לְדָוִד, מַשְׂכִּיל: אַשְׁרֵי נְשׂוּי-פֶּשַׁע; כְּסוּי חֲטָאָה. In micro-electron beam devices, components with dimensions in tenths of a millimeter can be precisely welded. ‘I wish I was as tough as the skin on my feet (eww) … In a sense, that receipt was your title deed, your guarantee that you would receive what you purchased. to keep evaporation in vacuum low, the material must have a low enough vapour pressure at the working temperature. Als onafhankelijke uitvoeringsinstantie initieert het, BIJLAGE VERDELING PER SECTOR VAN DE EU-BIJSTAND, DIE BEHEERD WORDT DOOR HET, ANNEX DISTRIBUTION BY SECTOR OF THE EU ASSISTANCE MANAGED BY THE, In de verordening betreffende het Europees Bureau voor Wederopbouw (, The regulation on the European Agency for Reconstruction (, Dit is van groot politiek belang aangezien al enkele bij het SAP betrokken landen uiting hebben gegeven aan hun bezorgdheid over een toekomstige uitbreiding van de bevoegdheid van het, Such a clarification is also of utmost political importance as some of the countries concerned by the SAP expressed already their concern about a future extension of the, OLAF informeerde de Commissie dat het de aantijgingen had onderzocht van de voormalige expert van het Europees Bureau voor Wederopbouw (hierna ", The Commission had been informed by OLAF that it had given attention to allegations made by the former European Agency for Reconstruction (, Na de aantijgingen van de voormalige EBW-expert, is de Commissie er zich van bewust dat de directeur van het, Following the allegations made by the former EAR expert, the Commission is aware that an official was asked by the Director of the, Verweerder: Europees Bureau voor wederopbouw (, Defendant: European Agency for Reconstruction (, Verzoek tot nietigverklaring van het besluit van het, Zaak C-213/06 P: Arrest van het Hof (Eerste kamer) van 18 juli 2007 - Europees Bureau voor wederopbouw (, Case C-213/06 P: Judgment of the Court (First Chamber) of 18 July 2007 - European Agency for Reconstruction (, - het arrest van het Gerecht van eerste aanleg (Vierde kamer) van 23 februari 2006 in zaak T-471/04 [Georgios Karatzoglou/Europees Bureau voor wederopbouw (, The applicant claims that the Court should:- Set aside the judgement of the Fourth Chamber of the Court of First Instance of 23 February 2006 in Case T-471/04 (Georgios Karatzoglou v European Agency for Reconstruction (, - het beroep tot nietigverklaring van het besluit van het, - Dismiss the action for annulment of the decision of the. Si prega di notare che Saldatura a fascio elettronico non è l'unico significato di EBW. Workpiece manipulators are mostly designed individually to meet the specific requirements of the welding equipment. The results of the beam application depend on several factors: Spanish Translation for EBW - dict.cc English-Spanish Dictionary The advantage of electron-beam welding is its ability to localize heating to a precise point and to control exactly the energy needed for the process. Make it your Bible. The emitter must be mechanically stable, not chemically sensitive to gases present in the vacuum atmosphere (like oxygen and water vapour), easily available, etc. Electron-beam generators (electron guns) designed for welding applications can supply beams with power ranging from a few watts up to about one hundred kilowatts. After leaving the anode, the divergent electron beam does not have a power density sufficient for welding metals and has to be focused. Many experiments and innumerable practical applications of electron beam in welding technology prove that the effect of the beam, i.e. DVS Media, Düsseldorf, 2012. EBW … Electron-beam equipment must be provided with an appropriate power supply for the beam generator. This applies to both the deflecting coils as well as to the necessary electronics. Translations in context of "EBW" in Dutch-English from Reverso Context: Als onafhankelijke uitvoeringsinstantie initieert het EBW zelf geen programma's en projecten. Examples are used only to help you translate the word or expression searched in various contexts. At higher power density, the material affected by the beam can totally evaporate in a very short time; this is no longer electron-beam welding; it is electron-beam machining. Behoeftes en Begeertes; 2. These examples may contain rude words based on your search. EBW, IATA airport code for the civil airport at Ebolowa in Cameroon European Bike Week, an annual event held at the Faaker See in Carinthia, Austria for fans of motorbikes Eisenbahnbewachungs GmbH (also known as "EBW cargo"), a private rail cargo company based in Dachau, Germany Up to now, uncountable numbers of various types of electron-beam equipment have been designed and realized. Maschil. It has been proved, both theoretically and experimentally, that they can "travel" only a very small distance below the surface before they transfer all their kinetic energy into heat. The high-voltage equipment must also supply the low voltage, above 5 V, for the cathode heating, and negative voltage up to about 1000 V for the control electrode. If both parts are rigid, the shrinkage of the weld produces high stress in the weld which may lead to cracks if the material is brittle (even if only after remelting by welding). Electron-beam welding can be so intense that loss of material due to evaporation or boiling during the process must be taken into account when welding. The number of electrons fulfilling this condition increases exponentially with increasing temperature of the metal, following Richardson's rule. Browse our Scrabble Word Finder, Words With Friends cheat dictionary, and WordHub word solver to find words that contain ebw. Includes free vocabulary trainer, verb tables and pronunciation function. The EBW file which is being opened is infected with an undesirable malware. Additional effect of this motion in the same magnetic field is another force F oriented radially to the axis, which is responsible for the focusing effect of the magnetic lens. Contextual translation of "sakeplane vir graad 6 ebw' kwartaal 4" into English. They cannot leave the metal unless their kinetic energy (in eV) is higher than the potential barrier at the metal surface. kwitansie translations kwitansie Add . The accelerating voltage may be chosen between 30 and 200 kV. Penetration of electron beam during welding, https://www.researchgate.net/publication/301915302_Electron_beam_welding_-_Techniques_and_trends_-_Review, "Scientist's invention was let go for a song", "INVENTOR AND PHYSICIST JAMES RUSSELL '53 WILL RECEIVE VOLLUM AWARD AT REED'S CONVOCATION", "Inventor of the Week - James T. Russell - The Compact Disc", "Standardizing the Art of Electron-Beam Welding", Electron beam welding of thin-walled parts, Leptons-Technologies Weldability of metals, https://en.wikipedia.org/w/index.php?title=Electron-beam_welding&oldid=1007966291, Articles needing additional references from August 2012, All articles needing additional references, Creative Commons Attribution-ShareAlike License, Strong electric fields, which can accelerate electrons to a very high speed. This is usually realized by a simple correction system consisting of two pairs of coils. EBW: Easy Buy World (Greece) EBW: Energy from Biomass and Waste (conference; UK) EBW: Electronic Bench Warrant (Hawaii) EBW: Electron Beam Welder: EBW: eBaum's World (entertainment media website) EBW: Electronic Battle Weapons (website) EBW: Electronic Bridgewire: EBW: Electron Bernstein Wave: EBW: Exploding Bridgewire: EBW: Extreme Backyard Wrestling: EBW: Everybody Wins: EBW There are more practical reasons why the most appropriate deflection system is used in TV CRT or PC monitors. Look up the German to English translation of EBWE in the PONS online dictionary. Many translated example sentences containing "ebw" – Spanish-English dictionary and search engine for Spanish translations. kwitansie in English Afrikaans-English dictionary. Ebw is a company based out of 209 E 350 N null, Blackfoot, Idaho, United States. Ebw | 13 followers on LinkedIn. Definitions of ebw, synonyms, antonyms, derivatives of ebw, analogical dictionary of ebw (English) ... To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares. Many translated example sentences containing "ebw" – English-Spanish dictionary and search engine for English translations. EBW is often performed under vacuum conditions to prevent dissipation of the electron beam. They are not selected or validated by us and can contain inappropriate terms or ideas. A high-vacuum atmosphere substantially contributes to a positive result. This consists of two pairs of coils, one for each X and Y direction. With such equipment very large objects can be welded without huge working chambers. "Micro-welds" of tiny components can be realized, as well as deep welds up to 300 mm (or even more if needed). EBW has launched a communications campaign using the Rady’s film images on billboards, flyers to hang on doors in English and Spanish, social media and short-form, podcast-type interviews to educate community members about the MAB program. Elapsed time: 38 ms. Word index: 1-300, 301-600, 601-900, More, Expression index: 1-400, 401-800, 801-1200, More, Phrase index: 1-400, 401-800, 801-1200, More. The power is controlled by the beam current at constant accelerating voltage, usually the highest accessible. 5. THIS SET IS OFTEN IN FOLDERS WITH... Graad 8 EBW - Entrepreneurskap - Ondernemingsvorme 25 Terms. The electron beam welding (EBW) and laser beam welding (LBW) processes are high-energy density welding processes that offer several possible advantages, including low welding heat input, high weld depth-to-width ratio, narrow heat-affected zone (HAZ), and reduced distortion. 1. Static deflection is useful for exact positioning of the beam by welding. Their construction must provide perfect contact of the parts and prevent their movement during welding. Another limitation to weldability may be the change of material properties induced by the welding process, such as a high speed of cooling. The most important are the physical properties of the materials to be welded, especially the ease with which they can be melted or vaporize under low-pressure conditions. boggle. michelle_jacobs5. There is a third electrode charged negatively with respect to the cathode, called the Wehnelt or control electrode. These can be used for "static" or "dynamic" deflection. For the lower range of beam power, up to about 2 kW, the width w=0.5 mm is appropriate. Action of the beam at low power density or over a very short time results in melting only a thin surface layer. tweets, and there's no denying the response is classist. In non-elastic collisions they lose their kinetic energy. Just this fact enables, under certain conditions, fast beam penetration. EBWorld supporta lo sviluppo di grandi e piccole aziende fornendo piattaforme e applicazioni semplici ma potenti che sfruttano le informazioni geografiche. EBW: Bridgewire che esplode: EBW: Electron Beam saldatore: EBW: Elettrone Bernstein Wave: EBW: Emozioni e comportamenti sul lavoro: EBW: Entropia Based Warfare: EBW: Estrema Backyard Wrestling: EBW: Larghezza di banda equivalente: EBW: Male oltre le parole: EBW: Malvagio, cattivo e sbagliato: EBW: Saldatura a fascio elettronico: EBW: Siti Web Business facile: EBW: Vincono tutti: EBW AFR:. the size and shape of the zone influenced by the beam depends on: (1) Beam power – The power of the beam [W] is the product of the accelerating voltage [kV] and beam current [mA], parameters easily measurable and precisely controllable. Portuguese Translation for EBW - dict.cc English-Portuguese Dictionary .ebw - Encyclopaedia Britannica Database. Because electrons transfer their energy into heat in a very thin layer of the solid, as explained above, the power density in this volume can be extremely high. Electron gun, generating the electron beam. After passing the anode opening, the electrons move with constant speed in a slightly divergent cone. For welding thin-walled parts, appropriate welding aids are generally needed. As its name indicates, it is based in and primarily serves the German state of Baden-Württemberg. A defocused beam does not penetrate, and the material at low welding speeds is heated only by conduction of the heat from the surface, producing a hemispherical melted zone. Encyclopaedia Britannica is a general knowledge English-language encyclopedia. Translate Ebw in English online and download now our free translator to use any time at no charge. For practical applications the power of the electron beam must, of course, be controllable. The computer does not have enough hardware resources to cope with the opening of the EBW file. Please report examples to be edited or not to be displayed. These examples may contain colloquial words based on your search. Under conditions usual in welding practice the "travel distance" is on the order of hundredths of a millimeter. This page was last edited on 20 February 2021, at 21:26. By adjusting the currents in these coils any required correcting field can be produced. to melt part of both in the vicinity of the joint, if the two materials have very different properties from their alloy, due to the creation of brittle, inter-metallic compounds. Both possibilities find many useful applications in electron-beam welding practice. Usually they have to be designed individually for a given workpiece. It is often not possible to join two metal components by welding, i.e. For proper functioning of the electron gun, it is necessary that the beam be perfectly adjusted with respect to the optical axes of the accelerating electrical lens and the magnetic focusing lens. They can be provided with electron guns supplying an electron beam with any required power up to 100 kW, or even more if needed. Questa pagina è tutto sull'acronimo di EBW e sui suoi significati come Saldatura a fascio elettronico. Drivers of equipment used by the computer to open a EBW file are out of date. 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. Italian Translation for EBW - dict.cc English-Italian Dictionary In this regard, as indicated in the Director General's previous report, Iran provided the Agency with information and explanations in April 2014 and additional information and explanations in May 2014, including showing documents, to substantiate its stated need for the development of EBW detonators and their application. : to weld joints of complicated geometry, and to create image-enlarged pictures of objects in the working chamber on TV or PC monitors. The relative motion of the beam and the workpiece is most often achieved by rotation or linear travel of the workpiece. The resulting trajectory of electrons in the magnetic lens is a curve similar to a helix. This makes it possible, e.g. Or use our Unscramble word solver to find your best possible play! By focusing the beam onto a small diameter on the surface of a solid object, values of planar power density as high as 104 up to 107 W/mm2 can be reached. In this context it should be mentioned that variations of focal length (exciting current) cause a slight rotation of the beam cross-section. Electron-beam welding provides excellent welding conditions because it involves: The effectiveness of the electron beam depends on many factors. Electrons emitted from the cathode possess very low energy, only a few eV. At high power density and low speed, a deeper and slightly conical melted zone is produced. This opens new possibilities for electron-beam applications, like surface hardening or annealing, exact beam positioning, etc. The type of cathode most frequently used in electron-beam welders is made of a tungsten strip, about 0.05 mm thick, shaped as shown in Fig. The last mentioned may be very complex if it is to provide computer-controlled imaging, engraving, or similar beam applications. They are then accelerated and formed into a narrow convergent beam by an electric field produced by three electrodes: the electron emitting strap, the cathode connected to the negative pole of the high (accelerating) voltage power supply (30 - 200 kV) and the positive high voltage electrode, the anode. Conduction electrons (those not bound to the nucleus of atoms) move in a crystal lattice of metals with velocities distributed according to Gauss's law and depending on temperature. Human translations with examples: my holiday grade 6. ‘We wouldn't like to be the street cleaner who gets that particular beat… eww.’. Descrizione: EBW file is an Encyclopaedia Britannica Database. As mentioned above, the beam spot should be very precisely positioned with respect to the joint to be welded. The heat contribution of single electrons is very small, but the electrons can be accelerated by very high voltages, and by increasing their number (the beam current) the power of the beam can be increased to any desired value. For technological applications the divergent beam has to be focused, which is realized by the magnetic field of a coil, the magnetic focusing lens. Results: 29. (2) Power density (focusing of the beam) – The power density at the spot of incidence of the beam with the workpiece depends on factors like the size of the electron source on the cathode, the optical quality of the accelerating electric lens and the focusing magnetic lens, alignment of the beam, the value of the accelerating voltage, and the focal length. TSnyman. Happy is he whose transgression is forgiven, whose sin is pardoned. Learn more about EnBW's corporate strategy, our three business areas and our measures for a new energy world. michelle_jacobs5. The butt weld of two plates results in bending of the weldment because more material has been melted at the head than at the root of the weld. With tungsten cathodes, emission current densities about 100 mA/mm2 can be achieved, but only a small portion of the emitted electrons takes part in beam formation, depending on the electric field produced by the anode and control electrode voltages. This can be achieved by an electric field in the proximity of the emitting cathode surface which has, a radial addition as well as an axial component, forcing the electrons in the direction of the axis. Dutch Translation for EBW - dict.cc English-Dutch Dictionary In some cases the welding is realized by moving the beam with the help of a computer-controlled deflection system. Dynamic deflection is realized by supplying the deflection coils with currents which can be controlled by the computer. To cover the various requirements, countless welder types have been designed, differing in construction, working space volume, workpiece manipulators and beam power. Vacuum working chambers of various design may have a volume of only a few liters, but vacuum chambers with the volume of several hundreds cubic meters have also been built. ‘eww, how can you eat that?’. This situation cannot be changed, even by electron-beam heating in vacuum, but this nevertheless makes it possible to realize joints meeting high demands for mechanical compactness and that are perfectly vacuum-tight. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact. Such a system enables not only “static” deflection of the beam for the positioning purposes mentioned above, but also precise and fast dynamic control of the beam spot position by a computer. Translate Ebw to English online and download now our free translation software to use at any time. English. Ekonomiese-en Bestuurswetenskappe / Economic and Management Sciences. Its negative potential controls the portion of emitted electrons entering into the accelerating field, i.e., the electron-beam current. EBW Gr 7 Kwartaal 3 9 Terms. Encyclopaedia Britannica is a general knowledge English-language encyclopedia. When electrons from the beam impact the surface of a solid, some of them may be reflected (as "backscattered" electrons), while others penetrate the surface, where they collide with the particles of the solid. (4) Material properties, and in some cases also on. The material melted by the beam shrinks during cooling after solidification, which may have unwanted consequences like cracking, deformation and changes of shape, depending on conditions. Thus, the electron beam can carry high power, equal to the product of beam, Shallow penetration depths in the order of hundredths of a millimeter. 1 – 5 MRT. In this case the equipment is operated like a scanning electron microscope, with a resolution of about 0,1 mm (limited by the beam diameter). The EBW data files are related to Encyclopaedia Britannica.EBW file is an Encyclopaedia Britannica Database. There are also welding machines in which the electron beam is brought out of vacuum into the atmosphere. Contextual translation of "ebw" into English. The accelerating field must also navigate the electrons to form a narrow converging “bundle” around the axis. In this area you will find further information about the EnBW group. 10−19 C. They exist either bound to an atomic nucleus, as conduction electrons in the atomic lattice of metals, or as free electrons in vacuum. Used to express disgust or distaste. At higher power density, the material affected by the beam can totally evaporate in a very short time; this is no longer electron-beam welding; it is electron-beam machining. French-English 38 Terms. exclamation. This distance is proportional to their initial energy and inversely proportional to the density of the solid. The vacuum working chamber may have any desired volume, from a few liters up to hundreds of cubic meters. "Electron Beam Technologies". This can be accomplished by another electric field produced by another cathode negatively charged with respect to the first. The use of the term "Section 8" is undeniably so. Schulze, Klaus-Rainer. To give them the required high speed, they are accelerated by a strong electric field applied between the emitter and another, positively charged, electrode, namely the anode. The exploding-bridgewire detonator (EBW, also known as exploding wire detonator) is a type of detonator used to initiate the detonation reaction in explosive materials, similar to a blasting cap because it is fired using an electric current. Exact: 29. Take advantage of EBW Electronics turnkey EMS capabilities by engaging with us at the early stages of your project. Most often a system of four coils positioned symmetrically around the gun axis behind the focusing lens, producing a magnetic field perpendicular to the gun axis, is used for this purpose. With noun/verb tables for the different cases and tenses links to audio pronunciation and …