Lub tshuab nqus tsev cua sov yog cov txheej txheem tseem ceeb hauv kev tsim khoom hauv aerospace, kev tsim khoom siv hluav taws xob, kev kho cua sov hlau, thiab kev ua cov iav precision- siv rau lub tshuab nqus tsev vacuum, lub tshuab nqus tsev annealing, thiab lub tshuab nqus tsev txheej- thiab feem ntau cuam tshuam los ntawm cov cua sov tsis ua hauj lwm, tsis sib xws ntawm qhov kub thiab txias, thiab cua sov qeeb - nyob rau hauv qis - siab. Cov teeb meem no yog tshwj xeeb rau lub tshuab nqus tsev cua sov: qhov tsis muaj huab cua tshem tawm cov cua sov hloov pauv, tsuas yog cov hluav taws xob hloov hluav taws xob raws li cov txheej txheem hloov hluav taws xob, thiab cov cua kub ib txwm muaj feem ntau tsis muaj cov qauv thiab cov khoom siv kom haum rau qhov chaw huab cua. Qhov tseeb, cartridge rhaub [cartridge rhaub] yog tsim los kom kov yeej cov kev cov nyom no, ua rau lawv ua cov cua sov ua kom sov rau cov ntawv thov cua sov vim lawv qhov siab -kub hluav taws xob efficiency thiab nqus tsev vacuum- sealed durability.
Cartridge heaters [cartridge heater] excel in the vacuum heating because of their optimized design for radiation heat transfer- tib txoj kev hloov hluav taws xob zoo nyob rau hauv qis- siab (10⁻³ txog 10⁻⁶ Pa) lub tshuab nqus tsev ib puag ncig. Tsis zoo li cov raj cua kub ib txwm muaj cov nplaim du thiab tsis tshua muaj hluav taws xob ua haujlwm, siab -cov khoom siv hluav taws xob zoo rau lub tshuab nqus tsev siv lub ntsej muag tshwj xeeb uas kho cov kab mob (xws li dub oxide txheej lossis ceramic txheej) uas ua rau kom cov emissivity rau 0.85-0.95 (piv rau 0.3-0.5 rau stainless hlau). Qhov siab emissivity no txhais tau hais tias lub rhaub hloov yuav luag tag nrho cov hluav taws xob tsim hluav taws xob rau hauv cov hluav taws xob infrared, uas yog absorbed los ntawm lub workpiece los yog lub tshuab nqus tsev vacuum chamber phab ntsa, ua tiav cov cua sov hloov txawm nyob rau hauv tag nrho cov huab cua. Raws li cov ntaub ntawv siv tiag tiag, cov khoom siv hluav taws xob hauv lub tshuab nqus tsev tau ua tiav qhov kev siv cua sov txog li 80%, deb tshaj li cov cua kub ib txwm (40-50%) hauv tib qhov chaw.
Lub tshuab nqus tsev-kev ruaj ntseg kaw yog qhov tseem ceeb tshaj plaws ntawm kev ua haujlwm ntawm lub tshuab cua sov [cartridge heater] hauv kev siv lub tshuab nqus tsev- tej huab cua lossis noo noo nyob rau hauv lub rhaub yuav raug tso tawm rau hauv lub tshuab nqus tsev thaum cua sov, ua kom lub tshuab nqus tsev vacuum thiab paug cov khoom ua haujlwm (xws li, ua rau oxidation ntawm cov hlau wafers). High- qib cartridge tso cua sov rau lub tshuab nqus tsev cua sov ua kom nruj ob-theem lub tshuab nqus tsev vacuum sealing txheej txheem: ua ntej, lub tshuab nqus tsev vacuum raug tshem tawm mus rau lub tshuab nqus tsev siab (10⁻⁴ Pa) thaum lub sij hawm tsim khoom kom tshem tawm tag nrho cov huab cua sab hauv thiab noo noo, tom qab ntawd cov hlau xaim tawm tau muab khi nrog siab - brazing lub tshuab nqus tsev vacuum. Qhov no hermetic sealing kom tsis txhob muaj roj tso tawm ntawm lub rhaub txawm tias thaum tshav kub mus rau 800 degree, tswj lub tshuab nqus tsev lub purity thiab tiv thaiv cov workpiece paug. Tsis tas li ntawd, lub tshuab rhaub cov khoom siv rwb thaiv tsev sab hauv (siab-purity magnesium oxide hmoov) yog lub cev qhuav dej ntawm qhov kub siab (1000 degree) thaum lub sij hawm tsim khoom, tshem tawm cov dej seem uas yuav ua rau muaj kev puas tsuaj.
Cov khoom siv thiab cov qauv kev ruaj ntseg yog qhov tseem ceeb rau lub tshuab cua sov [cartridge heater] ua haujlwm hauv qhov chaw nqus cua sov, qhov twg cov cua sov raug kub hnyiab heev (300℃-900 degree) thiab tsis muaj cua txias. Rau nruab nrab- daim ntawv thov lub tshuab nqus tsev kub (300℃-600 degree), cov cua sov siv 316L stainless hlau casings nrog cov oxidation siab (txawm tias nyob rau hauv cov huab cua me me tam sim no nyob rau hauv qis- qhov chaw nqus tsev). Rau siab- cov ntawv siv lub tshuab nqus tsev kub (600℃-900 degree), Inconel 718 casings yog siv-cov superalloy no tuav nws cov qauv lub zog thiab corrosion kuj ntawm ultra{18}} kub, tiv thaiv casing deformation los yog tawg uas yuav ua rau lub rhaub tsis ua hauj lwm. Cov xaim cua sov sab hauv yog ua los ntawm siab -purity npib tsib xee-chromium-aluminium alloy (Cr20Ni80 lossis Cr15Ni60), uas muaj qhov zoo heev-kub creep tsis kam thiab tsis tawg lossis deform nyob rau hauv lub tshuab nqus tsev cua sov mus ntev.
Kev faib tawm qhov kub thiab txias yog qhov tseem ceeb rau cov txheej txheem nqus cua sov (piv txwv li, semiconductor wafer annealing, aerospace tivthaiv brazing), qhov twg txawm tias qhov sib txawv me me (± 1 degree) tuaj yeem ua rau cov khoom ua haujlwm deformation lossis kev ua haujlwm tsis zoo. Cartridge heaters [cartridge heater] xyuas kom meej lub tshuab nqus tsev kub los ntawm ob qho tseem ceeb tsim qauv: ua ntej, qhov tseeb winding ntawm cov cua kub hauv cov hlau ua kom muaj cua sov zoo ib yam raws li tag nrho cov cua sov ntev, tsis muaj qhov kub lossis txias; Thib ob, lub compact modular tsim tso cai rau ntom, sib npaug spaced installation ntawm cov cua sov ntawm lub tshuab nqus tsev chamber phab ntsa. Qhov kev teeb tsa array no tsim kom muaj qhov sib txawv ntawm cov hluav taws xob infrared nyob rau hauv lub chamber, tswj qhov kub thiab txias ntawm txhua qhov chaw ua haujlwm. Rau lub tshuab nqus tsev loj, ntau lub tshuab tso cua sov tuaj yeem txuas nrog lub hauv nruab nrab ntawm kev tswj qhov kub thiab txias, nrog rau kev hloov lub zog ntawm tus kheej rau txhua lub rhaub kom zoo - qhib qhov kub thiab tshem tawm qhov sib txawv ntawm qhov seem seem.
Power density and heat-up rate matching are also important for cartridge heaters [cartridge heater] in vacuum heating. Txij li cov hluav taws xob hluav taws xob hloov hluav taws xob qeeb qeeb dua qhov convection, lub zog nruab nrab yuav tsum muaj kom tsis txhob muaj cua sov hauv zos ntawm lub rhaub thaum ua kom muaj cua sov zoo - nce tus nqi. Rau kev siv lub tshuab nqus tsev cua sov, qhov zoo tshaj plaws lub zog ntom ntom yog 20-45 W / cm²: qis zog ceev (20-30 W / cm²) yog siv rau precision low-heat-nce- cov txheej txheem (piv txwv li, semiconductor annealing 45cm), thaum xaiv lub zog siab dua (3cm) lub tshuab nqus tsev brazing txheej txheem uas yuav tsum tau ceev kub nce mus rau lub brazing point. Tsis tas li ntawd, cov khoom siv hluav taws xob tuaj yeem ua ke nrog cov khoom siv hluav taws xob ua los ntawm cov khoom siv kub kub los yog cov khoom siv hluav taws xob (xws li, aluminium ntawv ci) nyob ib ncig ntawm thaj chaw teeb tsa-cov ntaub thaiv npog no muaj kev cuam tshuam cov hluav taws xob hluav taws xob rov qab mus rau hauv lub tshuab nqus tsev, txo cov cua sov poob rau lub chamber sab nraud cua txias thiab ntxiv kev txhim kho kev siv hluav taws xob.
Nyob rau hauv cov ntsiab lus, cartridge rhaub [cartridge rhaub] yog qhov zoo tshaj plaws cua sov tov rau lub tshuab nqus tsev cua sov daim ntaub ntawv, muab high radiation tshav kub hloov efficiency, hermetic nqus sealing, ultra- kub stability, thiab meej uniform cua sov. Txhawm rau kom tsis txhob muaj lub tshuab nqus tsev vacuum, lub tshuab cua sov tsis ua haujlwm, thiab cov khoom ua haujlwm tsis zoo, nws yog ib qho tseem ceeb uas yuav tau xaiv cov cua sov uas muaj lub tshuab nqus tsev tsis zoo-tsim kaw, siab - emissivity nto kho, thiab cov hlau casings haum rau lub hom phiaj kub. Cov txheej txheem nqus tsev sib txawv (brazing, annealing, txheej), lub tshuab nqus tsev, thiab qhov ntau thiab tsawg chamber yuav tsum tau customized cartridge heater installation arrays, lub zog sib xws, thiab kev ntsuas hluav taws xob. Kev tsim kev daws teeb meem tsis yog tsuas yog ua kom muaj kev ruaj ntseg thiab purity ntawm lub tshuab nqus tsev cua sov tab sis kuj txhim kho kev tsim khoom thiab cov khoom ua haujlwm zoo, txhawb nqa qhov siab -precision manufacturing yuav tsum ntawm aerospace, semiconductor, thiab lwm yam kev lag luam siab heev.
