Tsis tu ncua -kub aquaculture tso tsheb hlau luam, cov khoom noj khoom haus soaking hlab ntsha, industrial circulating pipelines thiab preheating li rau lub teeb industrial cov dej khib nyiab feem ntau muaj cov kab mob chloride ions thiab dilute tsis muaj zog acids. Tsawg- cov pa roj carbon steel cua sov cov raj muaj qhov ua rau nkag mus rau xeb thiab kua dej tom qab luv luv - lub sijhawm kev pabcuam. Hwm los tiv thaiv-cov khoom siv hluav taws xob tiv thaiv hluav taws xob suav nrog titanium, quartz thiab PFA- sheathed heaters xav tau kev nqis peev loj, ua rau lawv tsis tsim nyog rau kev teeb tsa dav dav ntawm cov tuam txhab me thiab nruab nrab- loj. Raws li ib tug paub tab molybdenum-alloyed stainless hlau, 316 stainless hlau cua sov hlab dominate cov pa anti{11}}corrosion cua sov ua lag luam. Ntau ntawm -cov kws tshaj lij ntawm qhov chaw thiab cov neeg ua haujlwm yuav khoom pom tias nws nyuaj rau kev soj ntsuam nws cov kev ua tau zoo, kev txwv tsis pub siv thiab ntev -cov nqi ua haujlwm rau cov khoom siv cua sov. Daim ntawv no tshuaj xyuas nws cov khoom tsim nyog, kev ua haujlwm ntawm kev ua haujlwm thiab qhov tsis zoo, nrog rau cov lus sib piv ntawm plaub lub ntsiab tiv thaiv{16}}cov khoom siv hluav taws xob txuas nrog.
Qhov tseem ceeb ntawm kev sib tw ntawm 316 stainless hlau nyob rau hauv cov khoom molybdenum ntxiv, uas muaj txiaj ntsig zoo inhibits chloride - ua rau pitting corrosion, ua rau ua rau cua sov raj tsis ua hauj lwm hauv ntsev - muaj cov dej nyob ib puag ncig. Hauv kev rov ua cua sov thiab cua txias, ib qho kev sib cog lus chromium oxide passivation zaj duab xis txuas ntxiv rau ntawm phab ntsa sab nrauv, tsim kom muaj kev tiv thaiv kev tiv thaiv kom tsis txhob muaj corrosive ions los ntawm eroding cov hlau substrate. Unlike ordinary 304 stainless steel that quickly develops dense corrosion pits exposed to chloride, 316 stainless steel maintains structural integrity under prolonged thermal shock. Nws tiv taus kev khoov mus tas li deformation thiab sealing tawg, tiv thaiv cov kua nkag mus rau hauv cov hlau tsis muaj zog. Tsis tas li ntawd, kev vuam paub tab, khoov thiab txiav cov txheej txheem txhawb kev cai - zoo li cov cua kub cua kom hloov mus rau qhov nqaim thiab tsis sib xws ntawm cov khoom siv ntau lawm.
Cov lus hauv qab no sib piv cov cim ua haujlwm tseem ceeb ntawm plaub los tiv thaiv -corrosion cua sov raj nyob rau hauv me me corrosive industrial ib puag ncig:
表格
| Cua sov Tube hom | Tsis muaj Acid & Chloride Resistance | Max Nruam Kev Pabcuam Kub | Cov qauv kev ruaj ntseg nyob rau hauv Thermal Cycles | Tag nrho Lifecycle Tus Nqi Ua Haujlwm |
|---|---|---|---|---|
| 316 Stainless hlau | Muaj zog tiv thaiv -pitting kev ua tau zoo | 550 degree | Zoo heev, nyuaj rau deform | Qhov zoo tshaj plaws sib npaug ntawm cov nqi thiab kev ua haujlwm |
| 304 Stainless hlau | Tsis muaj zog, tsis yooj yim rau cov pob txha tawg tawg | 420 degree | Nruab nrab, yooj yim rau hnub nyoog thiab distort | Kev siv nyiaj ntau ntxiv |
| Ntshiab Titanium Heating Tube | Sab saum toj -tier comprehensive anti-corrosion peev | 770 degree | Ultra- ruaj khov kho tshuab | Siab heev ib - sij hawm yuav khoom tus nqi |
| Quartz cua sov Tube | Stable tsuas yog nyob rau hauv ib tug acidic nruab nrab | 1170 degree | Tsis tshua muaj zog nyob rau hauv kev sib tsoo thiab kev co | Kev hloov tsis tu ncua coj cov nqi zais ntxiv |
Hauv kev ua haujlwm niaj hnub ua haujlwm, 316 stainless hlau cua sov raj xa cov txiaj ntsig zoo tshaj plaws rau kev lag luam nrog cov ntsiab lus cua sov loj. Titanium cua sov raj tsim hnyav ib -lub sij hawm nyiaj txiag siab; quartz tubes yooj yim tawg thaum lub sij hawm thauj mus los, kev teeb tsa thiab kev tu txhua hnub, ua rau cov nqi hloov tsis tu ncua. Ib txwm 304 stainless hlau raj yuav tsum tau ncua sij hawm ntau lawm rau kev soj ntsuam thiab hloov, accumulating ntau heev zog thiab cov khoom siv nyob rau hauv lub sij hawm ntev - lub sij hawm tas mus li manufacturing. Los ntawm qhov sib txawv, kev saib xyuas txhua hnub ntawm 316 stainless hlau cua sov raj tsuas yog yuav tsum tau ua kom huv si yooj yim, txo cov nqi khiav lag luam ntawm tag nrho cov cua sov.
Txawm li cas los xij, 316 stainless hlau muaj qhov txwv tsis pub siv. Ntev - lub sij hawm immersion nyob rau hauv siab - kub concentrated muaj zog acid los yog tov kua qaub-alkali corrosive kua yuav ua rau irreversible kev puas tsuaj rau nws nto passivation zaj duab xis, uas ua rau lub ceev ceev tube phab ntsa corrosion thiab scrapping. Rau cov tshuaj ua haujlwm hnyav li no, PFA qhwv cov cua sov lossis cov titanium cua sov raj ua raws li cov kev xaiv zoo dua. Yog hais tias qhov nruab nrab cua sov yog cov dej ntshiab deionized yam tsis muaj corrosive impurities, xaiv 304 stainless hlau tuaj yeem ua tiav cov kev xav tau cua sov yooj yim thiab tsis txhob siv cov khoom siv ntxiv.
Hauv kev xaus, nrog molybdenum- ntxiv dag zog rau cov tshuaj chloride, ruaj khov thermal thiab mechanical yam ntxwv, hloov tau raws li kev ua haujlwm thiab kev ua haujlwm zoo, 316 stainless hlau cua sov raj ua rau cov khoom siv hluav taws xob zoo tshaj plaws thiab kev txuag hluav taws xob rau feem ntau cov xwm txheej uas muaj tsawg - rau - nruab nrab corrosion. Txawm hais tias tsis muaj peev xwm hloov mus rau ultra- cov xov xwm corrosive hnyav, lawv tuav txoj haujlwm tseem ceeb uas tsis tuaj yeem hloov pauv hauv kev lag luam dav dav los tiv thaiv -corrosion cua sov sector.
