Offshore tej chaw xws li cua ua liaj ua teb thiab tidal fais fab chaw cia siab rau lub tshiab technologies tiv taus huab cua huab cua marine, corrosive seawater, thiab dynamic yoj rog.
Cov pa roj carbon steel muaj lub zog, yoog raws, thiab tus nqi -kev ua tau zoo, ua rau nws muaj kev xaiv zoo rau cov qauv sab nrauv. Txawm li cas los xij, carbon hlau tsis yog impervious. Thaum raug dej hiav txwv dhau sij hawm, nws tuaj yeem ua rau tsis muaj zog thiab ua rau tsis muaj zog - cuam tshuam txog kev ncaj ncees. G2MT Laboratories kwv yees tias seawater corrosion raug nqi Tebchaws Meskas ib leeg kwv yees li $ 94 nphom hauv xyoo 2016.
Offshore installations ua hauj lwm nyob rau hauv hnyav tej yam kev mob: cua siab, ntsev tsuag, tidal cycling, thiab lom fouling. Txhawm rau kom ntseeg tau ntau xyoo ntawm kev pabcuam txhim khu kev qha, khaws cia kev ncaj ncees ntawm cov tub ntxhais hlau yog qhov tseem ceeb.
Kev tiv thaiv Cathodic: Redirecting Corrosion deb ntawm hlau
Txhawm rau txo qis dej hiav txwv - ntxias cov pa roj carbon steel, cov kws ua haujlwm siv ntau lub tswv yim. Kev siv dav dav tshaj plaws yog kev tiv thaiv cathodic (CP)-ib txoj hauv kev uas tswj cov tshuaj tiv thaiv hluav taws xob los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau "tshem" cov khoom, tawm hauv cov hlau tiv thaiv tsis zoo.
Kev tiv thaiv Cathodic tuaj nyob rau hauv ob hom:
1. Sacrificial Anode Cathodic Protection (SACP)
Txoj hauv kev no txuas cov hlau electrochemically ntau dua - xws li zinc, aluminium, lossis magnesium - rau cov qauv hlau.
"Xav txog qhov kev sim hauv tsev kawm ntawv classic nrog tooj liab thiab zinc hauv dej ntsev," piav qhia Chris Wozencroft, Chief Engineer ntawm lub tuam txhab kev daws teeb meem. "Zinc tsis tshua muaj txiaj ntsig tshaj tooj liab. Thaum txuas nrog, zinc ua lub anode thiab corrodes nyiam, thaum tooj liab dhau los ua cathode thiab tseem tiv thaiv. Qhov ntawd yog lub hauv paus ntsiab lus qab 'cathodic tiv thaiv."
Hauv cov ntawv thov sab nrauv, zinc lossis txhuas anodes yog welded lossis bolted rau cov tsho hlau, cov kav dej, lossis lub hauv paus turbine. Lub anode corrodes es tsis txhob steel -li no lub sij hawm "sacrificial."
Advantage: Yooj yim, tsis muaj zog sab nraud yuav tsum tau.
Kev txwv: Anodes deplete dhau sijhawm thiab yuav tsum tau hloov pauv -ib qho kev sib tw rau tej thaj chaw deb lossis tob - dej infrastructure.
2. Txaus siab rau kev tiv thaiv Cathodic tam sim no
Rau ntev -lub neej lossis nyuaj- mus rau - cov qauv nkag, ICCP muab cov kev daws teeb meem ntev dua.
"Tsuas yog siv cov hlau tsis ruaj tsis khov, peb siv ib qho inert anode-feem ntau sib xyaw hlau oxide (MMO) lossis platinum-coated titanium," Wozencroft piav qhia. "Vim tias lub anode tsis muaj zog, tsuas yog txuas rau hlau tsis muaj dab tsi. Tab sis thaum ua ke nrog DC lub zog thiab txheej txheej ua kom muaj zog, peb tuaj yeem tswj cov hluav taws xob ntws los ua kom lub inert anode coj zoo li kev txi -tsis tas siv nws tus kheej."
Advantage: Lub neej ua haujlwm ntev, kho tau cov zis, haum rau cov qauv loj lossis cov qauv.
Kev txwv: Yuav tsum muaj cov khoom siv hluav taws xob txhim khu kev qha thiab kev saib xyuas, ua kom nce qib thiab kho cov nqi.
Ob txoj hauv kev zoo tiv thaiv offshore carbon steel thaum tsim thiab tswj kom zoo. Qhov kev xaiv nyob ntawm qhov project lifetime, accessibility, ib puag ncig tej yam kev mob, thiab tag nrho cov nqi ntawm cov tswv cuab.
Tshaj li Kev Tiv Thaiv Cathodic: Cov Khoom Xaiv Cov Khoom
Txawm hais tias kev tiv thaiv cathodic yog qhov tseem ceeb, cov khoom siv hauv paus nws tus kheej ua lub luag haujlwm tseem ceeb sib npaug hauv lub sijhawm ntev - corrosion resistance. Hauv thaj chaw muaj kev txhoj puab heev-xws li thaj chaw txaws, ntu ntu ntu, lossis thaj chaw uas muaj cov tshuaj chloride siab- cov kws ua haujlwm tau nce ntxiv kev txhim kho corrosion- cov alloys tiv taus kom ntev kev pab cuam lub neej thiab txo lub nra hnyav.
>Qhov no yog qhov kev ua cov hlau ua kom muaj nuj nqis ntxiv: Marine-qib stainless hlau thiab npib tsib xee-raws li alloys tuaj yeem tiv taus chloride nres, hydrogen sulfide raug, thiab cyclic ntub- tej yam kev mob qhuav zoo dua cov pa roj carbon steel - feem ntau tshem tawm qhov xav tau kev hloov pauv ntau zaus los yog txheej txheej.
Piv txwv li:
- Duplex thiab super duplex stainless hlau muaj kev tiv thaiv zoo heev rau chloride kev nyuaj siab corrosion cracking, ua rau lawv zoo tagnrho rau fasteners, cladding, thiab subsea Cheebtsam.
- Nickel-raws li cov alloys xws li Inconel 625 los yog C-276 muab kev ua tau zoo tshwj xeeb hauv cov roj av qaub, dej hiav txwv kub, thiab kev pabcuam acid condensate.
- Precision-txheej txheem stainless strips thiab daim hlau ua kom muaj kev tiv thaiv corrosion-cov hlua tiv thaiv, cov khoom siv hluav taws xob, thiab cov kab txuas txuas uas sib txuas nrog cov kab ke tiv thaiv cathodic.
Corrosion-Resistant Hlau Solutions rau Offshore Applications
Ntawm Jiangsu Xurui Metal Group Co., Ltd., peb muab cov khoom siv ua haujlwm siab - ua haujlwm kom ruaj khov, tsis tshua muaj - kev tu vaj tse sab nrauv:
| Daim ntawv thov | Xurui Hlau Solutions |
| Splash zone & tidal interval Cheebtsam | Duplex / super duplex stainless hlau daim hlau thiab nplooj ntawv; precision laser txiav rau complex geometries nrog tsawg tshav kub - cuam tshuam cheeb tsam |
| Subsea fasteners & kho vajtse |
316L / 317L stainless hlau strips thiab coils; kev cai- txiav blanks nrog deburred npoo rau kev nyab xeeb offshore installation |
| Cathodic tiv thaiv system Cheebtsam | Nickel{0}}raws li alloy strips rau anode connectors, siv electrode vaj tse, thiab hlws ris thawv; corrosion-resistant finishes ntev - lub sij hawm cia siab rau |
| Offshore cua turbine accessories | Marine-qib stainless hlau foils thiab precision- stamped brackets rau sensor mounts, cable tais, thiab nkag platforms; PVD txheej rau cov hniav zoo nkauj lossis siab - pom cov ntsiab lus |
| Kev cai fabrication txhawb | Hauv -lub tsev slitting, ntug tiav, thiab kev soj ntsuam zoo kom xa cov khoom npaj tau - rau -weld Cheebtsam nrog tag nrho traceability thiab ISO 9001 ntawv pov thawj |
Nrog peb 18,000 m² integrated processing center, nyob rau hauv -lub tsev tswj zoo, thiab kev ua hauj lwm pab xav tau offshore cov neeg muas zaub thoob plaws sab hnub tuaj Asia, Middle East, thiab South America, Xurui Hlau yog positioned los txhawb engineering tuam txhab, EPC neeg cog lus, thiab cov khoom manufacturers tsim lub resilient offshore infrastructure ntawm tag kis.
>Txawm hais tias koj tab tom qhia cov ntaub ntawv rau lub hauv paus cua turbine, tidal fais fab Cheebtsam, los yog cathodic tiv thaiv hardware, txoj cai alloy-thiab tus neeg ua hauj lwm txoj cai- ua rau tag nrho cov sib txawv.
Muaj zog. Corrosion-resistant. Lifecycle- optimized- lub neej yav tom ntej ntawm ntug dej hiav txwv yog tsim los ntawm cov khoom siv siab heev.
