Cov ntaub ntawv tseem ceeb - Xaiv txoj cai Alloy rau Nqus Cartridge rhaub

Cov ntaub ntawv tseem ceeb: Yuav ua li cas xaiv cov alloy zoo rau lub tshuab nqus tsev twj tso kua mis

Thaum lub tshuab rhaub dej kub ua haujlwm hauv lub tshuab nqus tsev, cov khoom siv sheath tseem ceeb dua thaum nws ua haujlwm hauv huab cua. Ib txheej me me ntawm oxidation cov ntaub ntawv ntawm cov hlau feem ntau nyob rau hauv atmospheric siab, uas tiv thaiv lawv nyob rau hauv qee txoj kev. Cov txheej txheej ntawm oxidation tsis tsim nyob rau hauv lub tshuab nqus tsev, los yog nws tsim nyob rau hauv ib txoj kev sib txawv. Tej yam uas ua haujlwm zoo hauv huab cua tuaj yeem nres ua haujlwm sai thaum huab cua raug tshem tawm.

Qhov kev txhawj xeeb tseem ceeb yog qhov vapor siab. Txhua yam khoom muaj qee qhov vapor siab uas nce siab thaum kub nce. Nyob rau hauv lub tshuab nqus tsev, cov ntaub ntawv uas muaj lub siab vapor siab tuaj yeem ua rau evaporate, uas tuaj yeem ua rau lub chamber thiab lub tshuab cua sov nws tus kheej. Qhov no yog vim li cas lub tshuab nqus tsev- qib cartridge rhaub yog ua los ntawm cov ntaub ntawv uas muaj cov pa siab tsawg heev thaum lawv siv.

Nickel-raws li alloys yog hom hlau uas nrov tshaj plaws siv hauv cov ntawv thov nqus tsev thaum kub kub. Piv txwv li, Inconel 600 muaj qhov tsis tshua muaj vapor siab, lub zog loj ntawm qhov kub thiab txias, thiab zoo kawg nkaus tiv thaiv oxidation yog tias lub tshuab nqus tsev tawg. Nws kuj tseem khaws nws cov khoom zoo ntawm qhov kub thiab txias thaum cov hlau tsis muaj hlau yuav ua kom tawv nqaij. Inconel feem ntau yog qhov kev xaiv ib txwm siv rau lub tshuab cua sov uas ua haujlwm hauv lub tshuab nqus tsev ntawm qhov kub siab tshaj 800 degree.

316L stainless hlau tuaj yeem ua haujlwm rau kev siv lub tshuab nqus tsev ntawm qhov ntsuas kub qis dua yog tias nws nqus tau -kua thiab tau tswj cov tshuaj. Txhawm rau txo qhov kev hnov ​​​​mob thiab tawm mus, qib "L" (tsawg carbon) yog qhov kev xaiv zoo tshaj plaws. Tab sis txawm tias 316L muaj lub siab vapor siab dua li cov nickel alloys, yog li nws yuav tsis zoo rau ultra- lub tshuab nqus tsev siab lossis kev siv huv.

Rau kev siv lub tshuab nqus tsev uas xav tau kub heev, zoo li saum toj 1200 degree, molybdenum thiab tungsten yog ua haujlwm. Cov hlau refractory no muaj zog heev ntawm qhov kub thiab txias thiab muaj vapor siab heev. Txawm li cas los xij, lawv yog nkig thiab nyuaj rau kev nrog. Molybdenum-sheathed cartridge heaters yog cov khoom tshwj xeeb uas siv hauv niche teb xws li kev tsim siv lead ua lossis siab - kev tshawb fawb kub.

Lub sheath thiab cov ntaub ntawv hauv ob qho tib si tseem ceeb. Thaum lub sij hawm tsim khoom, lub rwb thaiv tsev magnesium oxide yuav tsum siab -purity thiab zoo- ci kom tshem tau cov dej thiab gasses uas tau daig rau nws. Standard MgO tuaj yeem tuav cov dej uas khiav tawm hauv lub tshuab nqus tsev, uas tuaj yeem ua rau lub chamber qias neeg thiab txo qis cov rwb thaiv tsev. Cartridge rhaub uas ua haujlwm hauv lub tshuab nqus tsev ntiav MgO uas tau kho tshwj xeeb kom muaj cov dej noo tsawg.

Cov ntsaws ruaj ruaj ntawm cov terminals kuj tseem ceeb heev. Koj tsis tuaj yeem siv cov khoom sib khi zoo li silicone lossis epoxy vim lawv tawm hauv lub tshuab nqus tsev. Ceramic-rau-cov ntsaws ruaj ruaj hlau, iav ntsaws ruaj ruaj, los yog cov ntsaws ruaj ruaj uas tuav ntawm qhov siab qis yog siv rau hauv lub tshuab nqus tsev vacuum. Cov ntsaws ruaj ruaj no raug nqi ntau dua, tab sis lawv yuav tsum ua kom lub tshuab nqus tsev tsis zoo.

Raws li kev paub dhau los, tib neeg feem ntau ua qhov yuam kev ntawm kev siv lub tshuab cua sov li qub hauv daim ntawv thov lub tshuab nqus tsev hnyav, xav tias ob peb lub siab ntawm lub siab yuav tsis muaj teeb meem. Nyob rau hauv qhov tseeb, txawm tias qis qis ntawm lub tshuab nqus tsev tuaj yeem ua rau outgassing thiab tsis ua haujlwm sai. Qhov thaiv rau lub tshuab nqus tsev- tshwj xeeb tsim tsis yog ultra- lub tshuab nqus tsev siab; Nws yog qhov siab hauv qab atmospheric thaum convection txo qis heev.

Txhawm rau ua kom tiav, xaiv cov khoom tsim nyog rau lub tshuab nqus tsev twj tso kua mis yog qhov chaw tshwj xeeb. Nickel-raws li alloys rau qhov kub thiab txias, qis- carbon stainless hlau rau cov xwm txheej nruab nrab, cov hlau refractory rau qhov hnyav, thiab tshwj xeeb ua cov rwb thaiv tsev tag nrho. Yog tias koj phim cov alloy rau lub tshuab nqus tsev, qhov kub thiab txias, thiab kev xav tau kev tu, nws yuav ua haujlwm zoo thiab kav ntev. Cov ntaub ntawv pov thawj thiab cov ntaub ntawv ua tiav ua rau koj muaj kev thaj yeeb nyab xeeb thiab muaj peev xwm taug qab cov khoom siv tseem ceeb.