Kev txiav txim siab ntawm cov khoom Sheath uas hloov txhua yam
Lub tshuab rhaub dej kub ntsuas rau 350 degrees Celsius tsis ua haujlwm tom qab tsuas yog ob peb lub hlis hauv kev pabcuam. Lub sheath yog discolored, pitted, thiab nyob rau hauv tej qhov chaw, thinned mus rau lub point ntawm rupture. Qhov kev xav tam sim ntawd tej zaum yuav yog lub rhaub dej kub tsis zoo rau daim ntawv thov. Feem ntau, txawm li cas los xij, qhov teeb meem tsis yog qhov ntsuas kub ntawm - nws yog cov ntaub qhwv.
Rau cov pa kub 350℃ib lub taub hau hluav taws xob cua sov raj, cov khoom siv sheath yuav tsum raug xaiv raws li ntau tshaj li qhov siab tshaj plaws ua haujlwm kub. Stainless hlau 304 yog cov khoom siv dav siv ntau tshaj plaws, haum rau qis rau nruab nrab -kev siv kub hauv qhov chaw tsis muaj corrosive. Ntawm 350 degrees, 304 stainless hlau feem ntau yog tsim nyog rau feem ntau - lub hom phiaj daim ntawv thov. Txawm li cas los xij, thaum qhov chaw ua haujlwm cuam tshuam nrog cov dej noo, tshuaj, lossis cov txheej txheem vapors, cov qauv stainless hlau sheaths tuaj yeem raug tawm tsam, ua rau cov pinholes thiab qhov kawg tsis ua haujlwm.
Kev paub qhia tau hais tias ntau qhov kev ua tsis tiav ntxov ntxov rov qab mus rau cov ntaub ntawv sheath tsis sib haum. Lub tshuab cua sov ua haujlwm ntawm 350 degrees hauv qhov chaw txhaj tshuaj yas molding tej zaum yuav raug cov yas tawm -gassing, hydraulic fluids, los yog dej txias condensation. Raws li cov xwm txheej no, stainless hlau 316 muaj kev tiv thaiv corrosion zoo dua li 304. Rau qhov chaw muaj kev kub ntxhov ntau dua -xws li cov tshuaj chlorinated compounds lossis acidic tej yam kev mob -Incoloy sheaths muab kev tiv thaiv zoo tshaj. Incoloy sheath heaters tuaj yeem kav ntev li ob mus rau peb zaug ntau dua li cov cua sov steel hlau hauv qhov xwm txheej hnyav.
Kev xaiv ntawm cov khoom siv sheath kuj cuam tshuam rau kev hloov hluav taws xob. Copper sheaths muab kev hloov pauv sai sai tab sis qis dua corrosion. Rau cov pa kub 350℃ib lub taub hau hluav taws xob cua sov raj ua haujlwm hauv cov pwm hlau lossis tuag, stainless hlau lossis Incoloy sheaths feem ntau yog cov kev xaiv uas nyiam. Lawv muab qhov sib npaug zoo ntawm thermal conductivity, mechanical zog, thiab corrosion kuj.
Rau siab - qhov kub thiab txias nyob rau hauv 350-600℃ntau yam, 310S stainless hlau feem ntau tau teev tseg, muab cov siab zoo heev - kub stability thiab corrosion kuj. Cov khoom siv no tuaj yeem tswj cov kev ntxhov siab thermal cuam tshuam nrog kev ua haujlwm ruaj khov ntawm qhov kub siab yam tsis muaj degrading ntxov ntxov.
Internal kev tsim kho tseem ceeb thiab. Ib lub taub hau hluav taws xob cua sov zoo siv siab -purity magnesium oxide core rods thiab sau cov ntaub ntawv nrog cov thermal conductivity. Lub cua sov hlau nws tus kheej yuav tsum ua kom ntseeg tau ntawm 350 degrees. High- zoo npib tsib xee-chromium kuj hlau tuav nws cov khoom ntawm qhov kub thiab txias, thaum cov hlau tsis zoo oxidises thiab ua nkig.
Cov lus qhia ua kom pom tseeb. Thaum qhia txog qhov kub thiab txias ntawm 350℃ib lub taub hau hluav taws xob cua sov raj, cov ntaub qhwv yuav tsum sib phim tsis yog rau qhov kub thiab txias, tab sis kuj rau ib puag ncig tshuaj. Stainless hlau 304 suits huv, qhuav daim ntaub ntawv. Stainless hlau 316 muab kev txhim kho corrosion kuj. Incoloy muab cov qib siab tshaj plaws ntawm kev tiv thaiv nyob rau hauv ib puag ncig nruj. Thiab rau qhov kub thiab txias thawb mus rau qhov kawg ntawm qhov ntau, 310S stainless hlau muab qhov tsim nyog thermal stability.
Qhov chaw txiav tawm kuj tsim nyog saib xyuas. Cov hlau lead yuav tsum tau ntsuas qhov ntsuas kub ua haujlwm. Rau daim ntawv thov 350-degree, fiberglass lossis PTFE-insulated leads feem ntau haum. Lub davhlau ya nyob twg cheeb tsam yuav tsum tau ceev kom huv si thiab qhuav, vim tias kev sib kis tuaj yeem txo qhov kev ua haujlwm ntawm rwb thaiv tsev thiab ua rau luv luv Circuit Court.
Ntau qhov chaw tsim khoom muaj kev sib tw sib txawv. Kev nkag siab txog cov kev cov nyom no yog qhov tseem ceeb rau kev xaiv cov ntaub qhwv ntaub zoo thiab ua kom muaj kev ntseeg tau ntev ntev -.
