Los ntawm Offshore Platforms mus rau Choj: Zinc Hlau Daim Ntawv Thov hauv Hnyav -Kev Tiv Thaiv Corrosion

Steel corrosion raug nqi lub ntiaj teb no kev lag luam kwv yees kwv yees $ 2.5 trillion ib xyoos twg, nrog infrastructure thiab marine khoom muaj nqis sawv cev rau cov loj tshaj plaws ib qeb ntawm poob.Zinc hlau- xa tawm los ntawm thermal spray metallizing thiab sacrificial anode systems- muab ib qho ntawm cov nqi ntau tshaj - siv tau thiab cov txheej txheem pov thawj rau kev ncua kev pab cuam lub neej ntawm steel qauv hauv ib puag ncig hnyav. Kab lus no tshuaj xyuas tus thawj coj hnyav- cov haujlwm siv zinc hlau hla hiav txwv, kev tsim vaj tsev, kev lag luam, thiab lub zog.

Daim Ntawv Thov 1: Marine thiab Offshore Structures

Offshore roj thiab roj platforms, cua turbine foundations, thiab kev teeb tsa ntawm ntug dej hiav txwv ntsib ib txhij raug rau ntsev tsuag, tidal immersion, ultraviolet hluav taws xob, thiab mechanical abrasion. Thermal spray zinc coatings siv nrog siab -purity zinc hlau (Zn Ntau dua lossis sib npaug rau 99.995%) muab cov khoom fij uas cuam tshuam rau cov hlau hauv qab, tswj kev ncaj ncees hauv qab txawm tias cov txheej txheem puas.

Nyob rau hauv ib puag ncig marine, zinc- txhuas hlau hlau (ZnAl15) feem ntau tau teev tseg rau thaj chaw txaws- thaj tsam ntawm qhov dej siab thiab qis qis uas muaj kev cuam tshuam ntau tshaj plaws. Cov ntsiab lus txhuas tsim cov yeeb yaj kiab oxide ruaj khov uas txo cov nqi zinc noj, txuas ntxiv kev tiv thaiv rau 25-30 xyoo nrog rau daim ntawv thov sealer kom zoo.

Rau tag nrho submerged Cheebtsam xws li platform ob txhais ceg, risers, thiab subsea pipelines, zinc hlau kuj yog siv nyob rau hauv lub tsim ntawm anodes sacrificial. Cam khwb cia zinc anodes, ua los ntawm siab -purity zinc feedstock, muab kev tiv thaiv cathodic los ntawm kev tswj cov qauv hlau ntawm lub peev xwm uas tiv thaiv corrosion electrochemically. Cov anodes no yog tsim los rau kev kwv yees tus nqi noj thiab raug hloov ntawm lub sijhawm txij nkawm.

Daim Ntawv Thov 2: Choj Rehabilitation thiab Kev Tsim Kho Tshiab

Choj steel-girders, bearings, expansion joints, thiab cable anchorages- yog ib qho ntawm cov kev siv zog tiv thaiv corrosion ntau tshaj plaws. FHWA lub sijhawm ntev- qhov kev sim ntsuas qhov kis tau zoo tau xaus lus tias "cov tshuab hlau tau txuas ntxiv muab kev tiv thaiv corrosion zoo tshaj plaws. Tag nrho cov txheej hlau uas tau kuaj pom tsis muaj corrosion" nyob rau hauv cov ntug dej hiav txwv thiab cov cheeb tsam kev lag luam.

Thermal spray zinc ntawm choj steel xa ntau qhov zoo dua li cov xim pleev xim:

Kev pab lub neej:25-40+ xyoo ntawm kev tiv thaiv nyob ntawm ib puag ncig thiab sealer configuration, piv rau 10-15 xyoo rau cov xim ua haujlwm siab

Kev puas tsuaj kam rau ua:Tsis zoo li cov xim, zinc coatings muab kev tiv thaiv kev txi ntawm cov npoo txiav, khawb, thiab cov ntsia liaj qhov rooj -qhov chaw uas cov xim pleev xim feem ntau ua tsis tau ua ntej

Kho ncua ncua sijhawm:Kev txij nkawm txuas ntxiv txo cov nqi tsheb thauj mus los thiab kev cuam tshuam tsheb

Environmental compatibility:Zinc coatings muaj tsis muaj volatile organic compounds (VOCs) ntawm qhov chaw ntawm daim ntawv thov, thiab overspray yog tag nrho recyclable.

Zaj sawv Choj ntawm Niagara Falls, metallized nrog 85/15 Zn-Al alloy system, tau ua kom pom kev txij nkawm- tiv thaiv corrosion dawb rau ntau tshaj ob xyoo caum nyob rau hauv ib puag ncig yuav ua rau khov-thaw cycling thiab hnyav deicing ntsev raug. Ib yam li ntawd, Norwegian txoj kev txuas hniav nrog thermal spray zinc duplex coatings tau xa 25+ xyoo ntawm kev tiv thaiv nyob rau hauv Nordic ntug dej hiav txwv tej yam kev mob, nrog tsawg tsawg yuav tsum tau muab piv rau cov pa lwm txoj kev.

Daim ntawv thov 3: Cia Tank thiab Industrial Steel

Saum toj no - hauv av cia tso tsheb hlau luam (ASTs) rau roj av, tshuaj, thiab dej sawv cev rau lwm qhov kev thov loj. Tank sab nrauv, ru tsev, thiab sab hauv ntab ru tsev tau txais txiaj ntsig los ntawm cov tshuaj tsuag thermal zinc qhov chaw nyob hauv huab cua phem lossis qhov chaw vapor sab hauv ua kom xeb. Lub peev xwm los siv cov zinc coatings hauv thaj teb - yam tsis muaj lub sijhawm kho thiab ib puag ncig kev txwv ntawm cov xim tshuab- txo qis lub tank thaum lub sij hawm kaw.

Cov qauv hlau muaj nyob hauv cov nroj tsuag tshuaj, chaw nres tsheb fais fab, thiab cov chaw tsim khoom kuj tseem siv cov zinc hlau coatings uas muaj sulfur dioxide, chloride, lossis lwm yam corrosive agents. Nyob rau hauv cov cheeb tsam no, txheej thickness thiab sealer xaiv los ua qhov tseem ceeb tsim tsis, nrog rau cov specifications hu rau 100-200 μm ntawm zinc nrog ib tug tsim nyog organic sealer topcoat.

Daim Ntawv Thov 4: Cua Zog Infrastructure

Cua turbine yees, tshwj xeeb tshaj yog cov uas tau teeb tsa hauv cov chaw ntug dej hiav txwv lossis thaj chaw sab nrauv, tau nce ntxiv nrog cov txheej txheem thermal spray zinc txheej. Kev sib xyaw ua ke ntawm qhov siab - qhov siab raug, ntsev- cua daj cua dub, thiab kev saib xyuas tsis tu ncua ua rau ntev - lub neej txheej txheej tseem ceeb. Ntauwd seem feem ntau yog metallized nyob rau hauv lub khw fabrication ua ntej teb los ua ke, xyuas kom meej tag nrho cov kev pab cuam ntawm welded pob qij txha thiab txuas daim hlau.

Offshore cua monopile foundations nthuav tawm cov ntawv thov tshwj xeeb. Daim ntawv hloov pauv- qhov cuam tshuam ntawm submerged monopile thiab saum toj no -dej pej thuam- muaj kev cuam tshuam thaj chaw thiab yuav tsum tau Zn-Al alloy coatings lossis kev sib xyaw ntawm cov tshuaj tsuag thermal zinc nrog cathodic tiv thaiv siv zinc anodes.

Daim Ntawv Thov 5: Nruam Kub -Dip Galvanizing

Tshaj li cov tshuaj tsuag cua sov, zinc hlau ua haujlwm rau cov khoom noj rau cov kab kub txuas ntxiv -dip galvanizing kab. Cov hlau hlau, cov yeeb nkab steel, thiab cov txheej txheem yog dhau los ntawm cov zinc da dej los tsim cov zinc txheej metallurgically sib raug zoo. Lub purity ntawm zinc hlau los yog zinc ingot feedstock ncaj qha cuam tshuam rau txheej adhesion, tsos, thiab corrosion kuj. High-purity zinc (Zn Ntau dua lossis sib npaug li 99.99%) feem ntau yog xav tau rau tsheb-qib thiab kev tsim kho- qib galvanized khoom.

Daim Ntawv Thov 6: Cov Ntawv Thov Tshiab

Ob daim ntawv thov tawm tshiab tau nthuav dav kev lag luam chaw nyob rau tshwj xeeb zinc hlau:

Zinc- cua roj teeb electrodes:Zinc hlau thiab zinc ntawv nyiaj tau raug tsim los ua cov khoom siv hluav taws xob rau tom ntej -tiam zinc- roj teeb cua siv hauv daim phiaj- teev lub zog cia thiab hluav taws xob tsheb ntau yam txuas ntxiv. Cov khoom siv hluav taws xob hluav taws xob ntawm siab -purity zinc ua rau nws yog cov khoom siv anode zoo tshaj plaws rau cov tshuab no.

Additive manufacturing:Cov kev tshawb fawb tau soj ntsuam cov zinc thiab zinc- alloy hlau raws li feedstock rau hlau -arc additive manufacturing (WAAM) ntawm corrosion-cov khoom tiv thaiv thiab kev txi cov anode nrog cov geometry nyuaj.

Txheej Performance Summary by Environment

Kev Lag Luam Case rau Zinc Hlau Txheej

Thaum soj ntsuam raws li tus nqi ntawm lub neej, cov txheej txheem thermal spray zinc txheej ib txwm ua tau zoo dua cov txheej txheem xim rau ntev - lub neej infrastructure. Tus nqi pib ua ntawv thov ntau dua yog offset los ntawm kev ncua sij hawm saib xyuas, txo qis qis, thiab tshem tawm tag nrho cov voj voog rov qab. Rau txoj haujlwm loj choj nrog 50- xyoo tsim lub neej, zinc metallizing system tuaj yeem txo tag nrho cov nqi tiv thaiv corrosion los ntawm 30-50% piv rau peb-coat xim system uas yuav tsum tau muaj ob lub recoats puv lub sijhawm ua haujlwm.

Hu rau ZhenAn rau qhov project-Cov lus qhia tshwj xeeb

ZhenAn muab cov khoom siv zinc hlau thiab zinc- aluminium alloy hlau rau thermal spray, arc spray, galvanizing, thiab sacrificial anode applications thoob ntiaj teb. Peb cov khoom lag luam npog diameters ntawm 0.8 hli txog 4.0 hli hauv purities los ntawm Zn Ntau dua lossis sib npaug rau 99.99% rau Zn Ntau dua lossis sib npaug rau 99.995% SHG, nrog daim ntawv pov thawj tag nrho rau ASTM B833, ISO 14919, AWS C2.25/C2.23, thiab

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