Feem ntau, kev xaiv cov khoom siv rau lub tshuab rhaub cartridge zoo li xaiv ntawm kev tiv thaiv corrosion los yog tiv taus cua sov. 316 stainless hlau yog tus yeej rau ntub, chloride-laden ib puag ncig tab sis muaj kev txwv kub zoo ib yam li 304. Inconel alloys tuav cov cua kub heev tab sis tuaj ntawm tus nqi tseem ceeb. Muaj ib qho tshwj xeeb, nyuaj niche qhov twg ob qho tib si nruab nrab corrosion thiab kub siab yog tam sim no: qhov no yog ib qho kev sib tw muaj zog rau 321 stainless hlau cartridge rhaub. Ntau tus neeg siv kev lag luam tawm tsam nrog qhov "txawm li cas los xij-los yog" qhov teeb meem, nkim cov peev txheej ntawm ntau tshaj -Inconel cartridge heaters lossis hloov hauv qab - ua 304 lossis 316 qauv ua ntej ntxov{11}}thaum lub 321 cartridge rhaub yuav yog qhov zoo tagnrho nruab nrab- hauv av tov.
Txhawm rau nkag siab tias yog vim li cas 321 stainless hlau cartridge rhaub ua tau zoo nyob rau hauv lub niche no, nws yog ib qho tseem ceeb ua ntej kom meej meej cov kev txwv ntawm lwm yam khoom siv . 304 cartridge heaters yog tus nqi - zoo tab sis tsis muaj corrosion kuj rau cov tshuaj me me thiab degrade sai nyob rau hauv qhov kub siab tshaj 500℃. 316 cartridge heaters nce nyob rau hauv ib puag ncig zoo chloride{5} ua tsaug, tab sis lawv qhia txog 304 qhov tsis zoo rau kev nkag siab zoo-thaum lub sijhawm raug rau 425-815℃depletes chromium ntawm cov ciam teb nplej, ua rau tsis muaj zog corrosion. Inconel cartridge heaters daws qhov teeb meem kub siab, muaj peev xwm tiv taus 1000℃+ ib puag ncig, tab sis lawv cov nqi npib tsib xee-raws li kev sib xyaw ua rau lawv 2-3 zaug kim dua 321, feem ntau yog tus nqi tsis tsim nyog rau cov xwm txheej nruab nrab corrosion.
Xav txog daim ntawv thov kev ua zaub mov uas muaj - qhov kub thiab txias ci, qhov twg qee zaus caustic huv - hauv - qhov chaw (CIP) ntxuav. Los yog cov txheej txheem tshuaj uas ua haujlwm kub thiab cuam tshuam nrog acidic vapors tab sis tsis ncaj qha rau hauv cov kua qaub uas muaj zog. Nyob rau hauv cov xwm txheej "ntseeg siab" no, tus qauv 304 cartridge rhaub yuav ua rau muaj kev cuam tshuam dav dav los yog pitting thaum lub sij hawm, vim nws qhov chaw deteriorates los ntawm rov raug tshuaj lom neeg. Lub caij no, qhov txhim kho corrosion kuj ntawm 316 yuav raug cuam tshuam yog tias qhov kub thiab txias thawb rau hauv nws qhov kev nkag siab ntau yam - tsim qhov sib txawv uas tsuas yog 321 cartridge rhaub tuaj yeem sau.
Lub 321 stainless hlau cartridge rhaub muaj qhov sib npaug ntawm no, leveraging titanium stabilization kom kov yeej qhov tsis muaj zog ntawm lwm cov ntaub ntawv. Nws cov titanium-stabilized austenitic qauv tiv thaiv intergranular corrosion nyob rau hauv 425-815℃sensitization cheeb tsam, tso cai rau nws kom muaj toughness thiab oxidation kuj nyob rau hauv tas li ntawd kub kub (txog 870 degree). Tsis tas li ntawd, nws khaws cia zoo dua tag nrho corrosion kuj nyob rau hauv ntau qhov chaw muaj huab cua piv rau sensitized 304, tshwj xeeb tshaj yog tiv thaiv acids xws li nitric acid thiab cov tshuaj caustic siv nyob rau hauv cov txheej txheem CIP. Qhov tseem ceeb, 321 cartridge rhaub tsis yog hloov pauv rau 316 hauv ib puag ncig dej ntsev, thiab nws tsis yog hloov rau Inconel hauv 1100℃cub tawg. Txawm li cas los xij, rau nruab nrab hauv av- cov txheej txheem ua haujlwm nyob rau hauv 500-800℃ntau yam uas tseem ntsib cov tshuaj lom neeg lub sijhawm, chav dej, lossis cov pa roj combustion-321 nthuav tawm cov kev xaiv ruaj khov thiab feem ntau siv nyiaj ntau dua.
Cov ntawv thov tshwj xeeb uas hais txog qhov sib npaug no suav nrog cov pa hluav taws xob tsom xam cov tshuab, qhov twg lub tshuab cua sov lub tshuab cua sov cov kab uas muaj cov khoom siv acidic combustion. Cov tshuab no ua haujlwm ntawm 500-700 degree, nthuav tawm lub rhaub rau corrosive vapors-cov xwm txheej uas 304 ua tsis tau sai, 316 degrades vim rhiab heev, thiab Inconel yog kim heev . 321 stainless hlau cartridge heaters muaj zog ntawm no, tiv thaiv ob qho tib si kub thiab acidic vapors kom ntseeg tau tias cov cua sov. Lwm daim ntawv thov tseem ceeb yog qee hom kev kho cua sov cua uas txo qis me ntsis lossis carburizing; Cov cheeb tsam no xav tau qhov kub thiab txias (600-800 degree) thiab nthuav tawm lub tshuab cua sov rau cov pa roj me me, ua rau 321 qhov kev xaiv zoo tshaj plaws.
Cov cuab yeej siv rau siab -kub chav ntxuav kuj yog ib qho zoo meej haum rau 321 cartridge rhaub. Kev ntxuav chav muaj qhov kub siab tshaj 500℃thiab nthuav tawm lub rhaub kom ntub, me ntsis corrosive tej yam kev mob -304 cartridge heaters corrode lub sij hawm, 316 tawm tsam nrog rhiab heev ntawm qhov kub thiab txias, tab sis 321 tuav nws cov qauv kev ntseeg siab thiab corrosion kuj, kom ntseeg tau ntev. Raws li kev paub dhau los, 321 lub tshuab cua sov hauv cov chaw sib xyaw no muaj kev pabcuam lub neej 1.5-2 zaug ntev dua 316 qauv, thaum raug nqi 30-50% tsawg dua Inconel.
Kev xaiv cov khoom tsim nyog rau qhov chaw sib xyaw ua ke yuav tsum tau ua tib zoo tshuaj xyuas ntawm txhua tus neeg ua haujlwm tam sim no - hom tshuaj, concentration, kub, thiab theem (vapor vs. liquid). Lub tshuab cua sov lub thawv uas ua tau zoo nyob rau hauv kub, qhuav kua qaub vapor yuav ua tsis tau sai nyob rau hauv ib tug condensed kua theem ntawm tib cov kua qaub, raws li cov kua tshuaj muaj ntau corrosive tshaj lawv vapor counterparts. Muab ib daim duab ua tiav ntawm kev ua haujlwm rau tus neeg xa khoom paub yog qhov tseem ceeb.
Lawv tuaj yeem tawm tswv yim seb 321 stainless hlau cartridge rhaub haum rau qhov profile lossis yog tias ib puag ncig xav tau cov nickel tshwj xeeb ntau dua -raws li alloy, kom ntseeg tau tias cov kev xaiv tau raug tsim kho rau qhov nyuaj ntawm daim ntawv thov. Los ntawm kev xaiv 321 cartridge rhaub rau nruab nrab- cov xwm txheej hauv av, cov neeg siv khoom lag luam zam kom tsis txhob raug nqi ntau dua - cov ntaub ntawv tshwj xeeb thiab lub sijhawm poob qis hauv qab - ua haujlwm, ua kom muaj kev ntseeg siab thiab tus nqi ntau tshaj - ua haujlwm tau zoo. Lub 321 stainless hlau cartridge rhaub yuav tsis yog qhov zoo tshaj plaws -paub kev xaiv, tab sis nws yog undoubtedly lub niche champion rau daim ntaub ntawv uas nruab nrab corrosion thiab kub kub coexist.
