Yuav Ua Li Cas Xaiv Cov Khoom Siv Zoo Rau Cov Cuab Yeej Cuab Yeej Hauv Lub Tshuab Nqus Tsev

Thaum nws los txog rau kom paub tseeb tias cov tshuab cua sov ua haujlwm zoo hauv lub tshuab nqus tsev, cov khoom siv sheath yog qee zaum tseem ceeb dua li ntau tus neeg tsim khoom xav. Nyob rau hauv lub neej tiag tiag, muaj ntau yam piv txwv ntawm yuav ua li cas siv cov ntaub qhwv tsis zoo tuaj yeem ua rau lub tshuab cua sov ua tsis tau thaum ntxov, nce nqi kho, thiab txawm tias cov khoom siv lub tshuab nqus tsev puas tsuaj. Lub plhaub ntawm lub tshuab rhaub cartridge npog cov hlau sab hauv thiab rwb thaiv tsev muab tub lim. Nws kuj tseem ua raws li txoj hauv kev tseem ceeb rau kev txav mus los, thiab nws ua haujlwm zoo li cas ncaj qha cuam tshuam rau lub tshuab rhaub dej kom zoo li cas hauv lub tshuab nqus tsev, nws kav ntev npaum li cas, thiab nws ua kom sov li cas.

Muaj peb yam tseem ceeb ntawm cov ntaub ntawv sheath uas lub tshuab cua sov ua haujlwm hauv lub tshuab nqus tsev sov: stainless hlau, Inconel, thiab ceramic. Tsis muaj ib qho -loj- haum- txhua qhov kev xaiv vim tias txhua yam khoom muaj nws tus kheej cov khoom thiab siv. Raws li kev paub dhau los, muaj peb yam tseem ceeb uas yuav tsum tau xav txog thaum xaiv cov khoom siv sheath kom raug: lub tshuab nqus tsev ua haujlwm kub, roj ib puag ncig hauv lub tshuab nqus tsev, thiab cov khoom cua sov. Yog tias koj tsis xyuam xim rau ib qho ntawm cov no, koj tuaj yeem xaiv qhov tsis ncaj ncees lawm thiab ua rau muaj teeb meem tom qab.

Rau cov tshuab cua sov uas ua haujlwm hauv qis- mus rau nruab nrab- qhov kub ntawm lub tshuab nqus tsev (hauv qab 600 degree), stainless hlau yog cov khoom siv ntau tshaj plaws. Nws yog pheej yig, muaj zog thermal conductivity, thiab yog ib qho yooj yim mus ua hauj lwm nrog, yog li nws yog ib qho zoo rau lub tshuab nqus tsev cua sov cov xwm txheej xws li cov khoom siv nqus tsev vacuum drying, low-kub lub tshuab nqus tsev qhov cub, thiab lub tshuab nqus tsev cua sov daim hlau. Cov hlau tsis zoo tshaj plaws uas siv rau cov khoom siv hluav taws xob yog 304 thiab 316L. 304 stainless hlau yog qhov zoo rau qhov chaw nqus tsev qhuav uas tsis muaj cov roj corrosive, thaum 316L stainless hlau zoo dua ntawm kev tiv thaiv corrosion thiab tuaj yeem siv rau hauv qhov chaw nqus nrog me me tsis muaj zog corrosive gases, xws li dej vapors lossis me me. Tab sis cov hlau tsis muaj steel muaj kev txwv meej thaum nws los txog rau qhov kub thiab txias. Piv txwv li, thaum qhov kub siab tshaj 600 degree, nws yuav maj mam oxidize, qhov saum npoo yuav nkig, thiab lub tshuab rhaub cartridge yuav tsis kav ntev.

Inconel yog cov khoom siv zoo tshaj plaws rau cov ntaub qhwv hauv lub tshuab nqus tsev uas qhov kub siab tshaj 600℃thiab ib puag ncig yog corrosive. Inconel yog npib tsib xee-chromium- hlau alloy uas muaj zog heev ntawm qhov kub thiab txias thiab tiv taus oxidation thiab corrosion. Txawm tias kub txog 1200 degree, nws tuaj yeem khaws nws cov duab thiab tsis yooj yim corrode lossis hloov cov duab. Inconel 600 thiab Inconel 601 yog cov qib feem ntau ntawm Inconel rau cov khoom siv hluav taws xob cua sov. Inconel 600 yog qhov zoo rau siab - qhov kub ntawm lub tshuab nqus tsev ib puag ncig nrog corrosive gases xws li chlorine, fluorine, thiab lwm yam roj corrosive muaj zog. Inconel 601, ntawm qhov tod tes, muaj kev tiv thaiv zoo dua rau oxidation ntawm qhov kub thiab txias thiab zoo dua rau siab -kub lub tshuab nqus tsev vacuum, semiconductor siab-cov khoom siv kub, thiab lwm yam xwm txheej uas yuav tsum tau ua haujlwm ntawm 800{18}}1200℃ntev. Inconel ua haujlwm tau zoo, tab sis nws raug nqi ntau dua li cov hlau tsis muaj steel thiab nyuaj rau kev ua haujlwm nrog, yog li nws tsis tau pom zoo rau cov ntawv thov lub tshuab nqus tsev uas tsis muaj kev tswj hwm tus nqi tseem ceeb heev.

Ceramic sheaths feem ntau yog ua haujlwm nyob rau hauv qhov tshwj xeeb lub tshuab nqus tsev cua sov qhov chaw uas lub cartridge rhaub yuav tsum tau insulated los ntawm cov khoom raug rhuab. Alumina thiab zirconia yog ob qho piv txwv ntawm cov ntaub ntawv ceramic uas zoo heev ntawm insulating, tuaj yeem tiv taus kub, thiab tsis xeb. Txawm li cas los xij, lawv tsis ua kom sov zoo, thiab lawv tsis yooj yim thiab tawg sai thaum koj nruab lossis siv lawv. Ceramic sheath cartridge heaters feem ntau yog siv rau hauv cov ntawv thov cua sov uas cov khoom siv hluav taws xob yog cov khoom siv hluav taws xob (xws li cov khoom siv hlau uas yuav tsum tiv thaiv luv luv Circuit Court) los yog cov rwb thaiv tsev nruj ntawm cov khoom cua sov thiab cov khoom siv hluav taws xob yog qhov tseem ceeb (xws li semiconductor chip processing equipment). Ceramic sheath cartridge heaters yog dav siv nrog hlau sheaths nyob rau hauv tiag tiag - lub neej nyob rau hauv cov xwm txheej los ua kom lawv cov thermal conductivity tsis zoo.

Thaum xaiv cov ntaub ntawv sheath rau lub cartridge rhaub, nws yog ib qho tseem ceeb uas yuav tau xav txog seb nws yuav ua hauj lwm zoo li cas nrog cov khoom uas tau rhuab. Piv txwv li, yog tias cov khoom raug rhuab yog ua los ntawm txhuas alloy, lub cartridge rhaub nrog stainless hlau sheath yog zoo dua vim hais tias nws muaj ib tug thermal expansion coefficient uas zoo ib yam li cov txhuas alloy. Qhov no yuav tiv thaiv txhua yam kev ntxhov siab los ntawm thermal expansion mismatch. Yog tias cov khoom raug cua sov yog ua los ntawm ceramic, koj tuaj yeem xaiv Inconel lossis ceramic sheath cartridge rhaub raws li qhov xav tau ntawm qhov kub thiab txias. Tsis tas li ntawd, lub sheath lub thickness cuam tshuam zoo npaum li cas lub tshuab cua sov ua haujlwm. Lub sheath uas tuab heev yuav ua rau nws nyuaj rau cov cua sov txav mus los ntawm nws, thaum lub sheath uas nyias dhau yuav ua rau nws tsis muaj kev tiv thaiv thiab yuav ua rau cov hlau tsis muaj zog.

Txhawm rau ua kom tiav, qhov tseem ceeb tshaj plaws uas yuav tsum tau ua kom paub tseeb tias cov khoom siv hluav taws xob ua haujlwm zoo hauv lub tshuab nqus tsev yog xaiv cov khoom siv sheath kom raug. Stainless hlau ua haujlwm zoo nyob rau hauv lub tshuab nqus tsev uas tsis kub dhau los yog txias heev thiab tsis corrode. Inconel ua haujlwm zoo hauv lub tshuab nqus tsev uas kub dhau los yog corrosive heev. Ceramic ua haujlwm zoo hauv lub tshuab nqus tsev uas xav tau kev rwb thaiv tsev tshwj xeeb. Cov khoom sib txawv ntawm cov khoom cua sov, cov khoom siv roj, thiab lub tshuab nqus tsev cua sov xav tau cov ntaub ntawv sib txawv. Cov neeg tsim khoom tuaj yeem tau txais kev txhawb nqa los ntawm cov kws tshaj lij kev tshaj lij los xaiv cov khoom siv zoo tshaj plaws rau cov khoom siv hluav taws xob los ntawm lawv cov kev xav tau, kev ua haujlwm sib npaug thiab tus nqi, thiab xyuas kom tag nrho lub tshuab nqus tsev cua sov yog qhov ruaj khov thiab ua haujlwm zoo.