Electron beam welding at ISI Brno

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F18%3A00494361" target="_blank" >RIV/68081731:_____/18:00494361 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Electron beam welding at ISI Brno
Original language description
In vacuum technology, and especially in UHV, we often encounter the necessity of joiningnparts of various metals in combination with the demand for perfect vacuum tightness,ncleanness of joints and minimum deformations. Electron beam welding belongs to thenbest technologies capable of fulfilling such requirements.nThe principle of electron beam welding is based on the transfer of the kinetic energy of thenincident accelerated electrons to the welded material in the form of heat. The temperature innthe spot rises with the beam power density. At power densities as high as 104 - 106 W/mm2,nthe melted material at the center of the focal point evaporates. This produces a vapor capillary surrounded by melted material that allows the beam to penetrate deeper and melt more material. The speed of the penetration can be much higher than the heat transfer bynconduction into the surrounding material. This results in narrow melted area and typical knifelikenprofile of the weld. Thanks to this effect the thermal deformations of weldednpieces are highly reduced to almost none. Small heat affected zone also allows welding nearnheat sensitive parts like sensors, ceramic feed-throughs and brazed joints.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Recent Trends in Charged Particle Optics and Surface Physics Instrumentation. Proceedings of the 16th International Seminar
ISBN
978-80-87441-23-7
ISSN
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e-ISSN
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Number of pages
3
Pages from-to
18-20
Publisher name
Institute of Scientific Instruments The Czech Academy of Sciences
Place of publication
Brno
Event location
Skalský dvůr
Event date
Jun 4, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000450591400005

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