Funso lodziwika bwino pakupanga zapamwamba ndilakuti: Kodi Electron Beam Welding (EBW) imafuna pampu ya vacuum? Yankho lalifupi ndi inde, muzochitika zambiri. Pampu ya vacuum sichiri chowonjezera koma mtima weniweni wa makina wamba a EBW, kupangitsa kuthekera kwake kwapadera.
Pakatikati pa EBW imaphatikizapo kupanga ma elekitironi othamanga kwambiri kuti asungunuke ndikuphatikiza zinthu. Izi zimakhudzidwa kwambiri ndi mamolekyu a mpweya. M'malo opanda vacuum, mamolekyuwa amatha kugundana ndi ma electron, zomwe zimapangitsa kuti mtengowo ubalalike, kutaya mphamvu, ndi kutsika. Zotsatira zake zitha kukhala kuwotcherera kwakukulu, kosalondola, komanso kosakwanira, kugonjetseratu cholinga cha kulondola kwa EBW ndikulowa mwakuya. Kuphatikiza apo, cathode ya electron gun, yomwe imatulutsa ma elekitironi, imagwira ntchito pa kutentha kwambiri ndipo imatha kutulutsa oxidize ndikuwotcha nthawi yomweyo ngati ikumana ndi mpweya.
Chifukwa chake, High-Vacuum EBW, mawonekedwe ofala kwambiri, amafunikira malo aukhondo mwapadera, nthawi zambiri pakati pa 10⁻² mpaka 10⁻⁴ Pa. Kuti akwaniritse izi pamafunika makina opopera am'magawo angapo apamwamba kwambiri. Pampu yovutitsa imachotsa koyamba mlengalenga, ndikutsatiridwa ndi pampu ya vacuum yapamwamba, ngati pampu ya diffusion kapena turbomolecular, yomwe imapangitsa kuti pakhale mikhalidwe yoyenera kuti igwire bwino ntchito. Izi zimatsimikizira kuwotcherera kopanda kuipitsidwa, kolimba kwambiri, kupangitsa kuti ikhale yofunikira kwambiri pazamlengalenga, zamankhwala, komanso kugwiritsa ntchito semiconductor.
Kusiyanasiyana komwe kumadziwika kuti Medium kapena Soft-Vacuum EBW kumagwira ntchito mwamphamvu kwambiri (mozungulira 1-10 Pa). Ngakhale zimachepetsa kwambiri nthawi yopumira kuti zitheke bwino, zimafunikirabe mapampu a vacuum kuti asunge malo olamuliridwa, otsika kwambiri kuti apewe kubalalikana kwambiri ndi okosijeni.
Chodziwika bwino ndi Non-Vacuum EBW, komwe kuwotcherera kumachitidwa poyera. Komabe, izi ndizosocheretsa. Ngakhale chipinda cha workpiece chikuchotsedwa, mfuti ya electron yokha imasungidwabe pansi pa vacuum yapamwamba. Kenako mtengowo umaonetsedwa kudzera munjira zosiyanasiyana zolowera mumlengalenga. Njirayi imakhala ndi kufalikira kwakukulu kwa matabwa ndipo imafuna kutchinga mwamphamvu kwa X-ray, kuchepetsa kugwiritsidwa ntchito kwake kuzinthu zinazake zamphamvu kwambiri.
Pomaliza, mgwirizano pakati pa mtengo wa electron ndi pampu ya vacuum ndizomwe zimatanthauzira teknoloji yamphamvuyi. Kuti mukwaniritse bwino kwambiri komanso kulondola komwe EBW imadziwika nayo, pampu ya vacuum sichosankha - ndichofunikira kwambiri.
Nthawi yotumiza: Nov-10-2025
