Dab tsi yog electron beam welding? Electron beam welding yog cov txheej txheem vuam precision ua nyob rau hauv siab -ib puag ncig lub tshuab nqus tsev, qhov twg lub zog kinetic ntawm lub siab -ceev electron ceev tau hloov mus rau hauv thermal zog thaum muaj kev cuam tshuam nrog lub workpiece nto. Muaj peev xwm ua tiav lub zog ntom ntom ntawm kwv yees li 10⁷ W / cm² ntawm lub nqaj focal point, cov txheej txheem ua kom siab - vuam zoo ntawm cov qauv hlau xws li 0.025 mm txog 300 mm nyob rau hauv tuab yam tsis tas yuav tsum tau muab tub lim hlau lossis ntug npaj. Txawm hais tias nws muaj keeb kwm ntev thiab kev sib tw nruj los ntawm arc vuam thiab laser vuam, electron beam vuam tuav txoj haujlwm tsis tuaj yeem hloov pauv hauv cov haujlwm xws li kev tsim tsheb, kev lag luam hluav taws xob, hluav taws xob engineering, aerospace, thiab mechanical engineering. Tshaj li vuam, thev naus laus zis tau siv dav hauv cov txheej txheem suav nrog nyias - zaj duab xis tso tawm, hloov kho qhov chaw, nrawm nrawm, cladding, thiab alloying.
Electron beam welding (EBW) muaj ob peb yam ntxwv tshwj xeeb uas teeb nws sib nrug ntawm lwm txoj kev sib koom. Thaum lub zog hloov hluav taws xob tshwm sim los ntawm thermal conduction ntawm qhov chaw ua haujlwm, lub zog loj heev ntawm cov nqaj hlau focal point ua rau cov khoom tawg sai sai, ua rau cov weld seam nrog qhov tob tob - rau - dav piv. Kev kub ceev vuam ceev ua rau nqaim weld seams thiab tshav kub tsawg- thaj chaw cuam tshuam, ua rau muaj qhov tsis zoo ntawm cov khoom ua haujlwm deformation. Lub beam lub peev xwm rau oscillate dawb tso cai rau kev txhim khu kev qha koom nrog cov ntaub ntawv feem ntau suav hais tias "unweldable." Kev sib txawv ntawm kev ua haujlwm sib txawv ua rau cov txheej txheem kom haum rau cov khoom ua haujlwm nrog cov geometry sib txawv. Vim tias vuam siv qhov chaw nyob hauv lub tshuab nqus tsev, lub pas dej molten yuav tsum tsis muaj cov pa tiv thaiv los yog flux los tiv thaiv oxidation; qhov no tsis yog tsuas yog txo cov nqi siv tau xwb tab sis kuj ua kom muaj cov khoom siv hlau tsis huv.
Hauv kev ntsuas hluav taws xob, kev tsim khoom ntawm Manganin shunts-xws li cov siv hauv cov ntsuas them ua ntej-xav tau qhov tshwj xeeb vuam zoo. Manganin alloy yog siv rau precision shunt resistors vim nws tsis tshua muaj kub coefficient ntawm kuj; Txawm li cas los xij, koom nrog Manganin rau tooj liab electrodes nthuav qhia cov kev sib tw rau cov txheej txheem vuam cov pa. Ua tsaug rau kev tswj xyuas cov cua sov kom zoo thiab qhov chaw tiv thaiv lub tshuab nqus tsev, electron beam vuam ua rau muaj kev ruaj ntseg ntawm Manganin thiab tooj liab yam tsis muaj oxide inclusions. EBW Manganin shunt rau relays yog ib qho piv txwv tseem ceeb ntawm kev siv thev naus laus zis hauv kev lag luam hluav taws xob.
Cov txiaj ntsig tseem ceeb ntawm Electron Beam Vuam
Power Density and Penetration Capability: Electron beam welding xa beam zog xws li 1 kW mus rau 300 kW, ua rau nws haum rau vuam cov ntaub ntawv nrog thicknesses los ntawm 0.5 hli mus rau 300 hli. Nyob rau hauv sib piv, laser welding yog txwv los ntawm tam sim no laser hwj chim theem (feem ntau hauv qab no 20 kW rau industrial daim ntaub ntawv) hais txog tob tob nyob rau hauv tuab daim hlau; electron beam welding, txawm li cas los xij, tuaj yeem koom nrog cov phiaj hlau kaum lossis ntau tshaj li ib puas millimeters tuab hauv ib qho dhau los -ib qho nyuaj rau lwm txoj kev vuam kom phim.
Tsis muaj Consumables thiab High Purity: Txij li cov txheej txheem yuav siv qhov chaw hauv lub tshuab nqus tsev, tsis tas yuav tsum muaj cov pa roj, flux, lossis cov hlau muab tub lim. Qhov no yog qhov tseem ceeb tshwj xeeb rau kev tsim cov shunt resistors rau cov xaim hluav taws xob, qhov twg impurities los ntawm flux lossis roj tuaj yeem ua kom paub qhov tsis xav tau qhov kub thiab txias coefficients ntawm kev tiv thaiv lossis ntev -lub sij hawm tsis ruaj khov.
Cov cua sov me me-Teb chaws cuam tshuam (HAZ) thiab Tsawg Distortion: The high energy density and high welding speed of electron beam welding result in a total heat input to the workpiece that is far lower than that of arc welding, typically limiting the HAZ width to just a few millimeters. Rau shunt resistors siv nyob rau hauv lub zog ntsuas, tsis tshua muaj distortion txhais tau hais tias lub shunts tsis xav tau ntxiv straightening los yog kev nyuaj siab -relief kev kho mob tom qab vuam, yog li yooj yim rau cov txheej txheem ntau lawm.
Txheej txheem Repeatability: Ob qho kev ntsuas hluav taws xob (kev nrawm nrawm, kab hluav taws xob tam sim no, ua kom pom tseeb tam sim no, vuam ceev) thiab cov khoom siv hluav taws xob tuaj yeem raug saib xyuas thiab tswj tau ntawm lub computer. Qhov no ua kom muaj qib siab ntawm kev rov ua tau zoo thiab sib xws hauv cov txheej txheem vuam thiab cov txiaj ntsig zoo. Qhov no yog qhov tseem ceeb rau kev tsim cov khoom loj ntawm latching relays rau cov ntsuas hluav taws xob ntse, qhov uas zoo ib yam weld zoo thoob plaws ntau txhiab units yog qhov tseem ceeb los lav kev ua haujlwm ruaj khov thaum ua haujlwm.
Dissimilar Material Welding peev xwm: Cov yam ntxwv ntawm cov kab hluav taws xob tso cai rau kev sib koom ntawm cov ntaub ntawv feem ntau suav hais tias tsis tuaj yeem. Kev ruaj ntseg metallurgical bonds tuaj yeem ua tiav ntawm cov hlau sib txawv -xws li tooj liab alloys nrog Manganin, tooj liab nrog hlau, lossis txhuas nrog tooj liab- ua cov txheej txheem muaj txiaj ntsig zoo hauv kev sib txuas hluav taws xob thiab kev tsim hluav taws xob.
Kev txwv ntawm Electron Beam Vuam
Nqus Chamber Size Constraints: Qhov luaj li cas ntawm lub tshuab nqus tsev chamber txwv qhov ntev ntawm cov khoom uas tuaj yeem ua tiav, vim tias tag nrho cov khoom sib dhos feem ntau yuav tsum tau muab tso rau hauv chamber rau vuam. Rau qhov nruab nrab- cov khoom loj- xws li latching relays rau peb -theem zog ntsuas-chamber loj tsis yog qhov teeb meem; Txawm li cas los xij, rau cov khoom siv loj (piv txwv li, aerospace fuselage seem lossis cov hlab ntsha loj), chamber qhov ntev thiab lub sijhawm khiav tawm tuaj yeem dhau los ua cov khoom ntim khoom.
Teeb meem nrog cov khoom sib nqus: Electron beams nqa ib tug tsis zoo nqi thiab deflect nyob rau hauv lub xub ntiag ntawm ib tug magnetic teb. Yog li ntawd, cov khoom siv vuam nrog cov hlau nplaum seem ua rau muaj kev cov nyom tshwj xeeb, vim tias cov khoom sib nqus ntawm tus kheej tuaj yeem cuam tshuam qhov tseeb ntawm qhov chaw ntawm cov kab hluav taws xob. Hais txog cov khoom sib nqus hauv 120A latching relays rau cov ntsuas hluav taws xob ntse, yuav tsum tau saib xyuas thaum vuam shunts, vim hais tias lub relay sab hauv magnetic Circuit Court tuaj yeem cuam tshuam nrog cov kab hluav taws xob. Cov kev daws teeb meem suav nrog demagnetizing magnetic Cheebtsam ua ntej vuam lossis kho txoj kev vuam kom tsis txhob muaj thaj tsam ntawm cov hlau nplaum muaj zog.
Kev txwv hauv 3D Contour Vuam: Feem ntau cov kab hluav taws xob vuam tshuab tau nruab nrog cov khoom siv ua haujlwm uas muaj peev xwm ua tiav txoj hauv kev, ncig, thiab 2D contour vuam txoj hauv kev, npog feem ntau ntawm kev lag luam. Txawm li cas los xij, cov cuab yeej siv hluav taws xob cov khoom siv hluav taws xob tuaj yeem tawm tsam nrog cov qauv tsim uas yuav tsum tau siv 3D contour vuam. Vuam peb -theem sib nqus latching relay tuaj yeem koom nrog ntau lub vuam seams thoob plaws cov dav hlau sib txawv, feem ntau yuav tsum tau kho cov cuab yeej thiab kev ua haujlwm.
Manganin shunt resistors ua haujlwm tseem ceeb tam sim no -sensing Cheebtsam hauv cov ntsuas ntse thiab cov cuab yeej ntsuas hluav taws xob. Thaum cov tooj liab-manganese-nickel alloy system muaj kev tiv thaiv zoo heev- qhov kub thiab txias, nws nthuav tawm cov teeb meem ntsig txog weldability; cov pa brazing los yog tsis kam welding txoj kev feem ntau qhia impurities rau hauv lub vuam los yog ua rau cov khoom siv los mos vim overheating.
Electron beam welding muaj cov kev daws teeb meem zoo tshaj plaws rau kev tsim Manganin tsis kam shunts. Lub tshuab nqus tsev ib puag ncig uas muaj nyob rau hauv electron beam welding kiag li tiv thaiv oxidation ntawm manganese thiab tooj liab, thaum lub siab kub qhov chaw txwv tsis pub cov cua sov- cuam tshuam cheeb tsam mus rau micrometer nplai ntawm ntug vuam, yog li khaws cia cov alloy qhov precision kuj yam ntxwv. Tsis tas li ntawd, kev tswj xyuas meej ntawm cov khoom siv hluav taws xob kom ntseeg tau tias qhov sib txawv ntawm cov hlau sib txuas ntawm Manganin thiab cov tooj liab ntshiab ua tiav qhov kev pom zoo ntawm cov khoom siv dag zog thiab hluav taws xob conductivity.
Yog koj xav taulatching relays rau ntse zog ntsuas, peb pab neeg engineering tuaj yeem pab koj thoob plaws hauv tag nrho cov txheej txheem -los ntawm thawj txheej txheem kev tsim kho thiab kev tsim qauv mus rau tag nrho - nplai ntau lawm. Thov koj xav xa koj cov lus qhia tshwj xeeb lossis kos duab kom tau txais cov lus pom zoo tsim nyog.
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