Direct Conclusion:Zinc Hlau muab kev tiv thaiv cathodic muaj zog thiab tsim nyog rau choj hlau, cov qauv hlau dav dav thiab tus nqi - tswj kev tiv thaiv - ua haujlwm corrosion. ZnAl15 hlau yog zoo dua rau marine, offshore, chaw nres nkoj thiab siab -cov av noo ib puag ncig vim cov txhuas- nplua nuj nto zaj duab xis slows txheej noj nyob rau hauv chloride raug.<<viwe mas
Thaum koj xaiv ntawm cov ntshiab zinc hlau thiab ZnAl15 hlau, tsis txhob sib piv cov nqi khoom ib leeg. Peb xav kom kuaj xyuas ib puag ncig hauv chav kawm, txheej thickness, sealing system, kev cia siab rau lub neej, kev saib xyuas thiab MTC muaj pes tsawg leeg ua ntej lees paub cov qib hlau.
Kev sib piv sib piv - Ntshiab Zinc vs ZnAl15
Lub hauv paus sib txawv yog nyob rau hauv cov alloy muaj pes tsawg leeg thiab kev tiv thaiv mechanism:
| Khoom | Ntshiab Zinc Hlau 99.995% | ZnAl15 Hlau 85/15 |
|---|---|---|
| Cov ntsiab lus zinc | 99.995% min | 84–86% |
| Aluminium cov ntsiab lus | - | 14–16% |
| Kev tiv thaiv mechanism | Kev tiv thaiv galvanic sacrificial | Kev tiv thaiv kev txi + kev cuam tshuam |
| Cov qauv siv tau | EN 1179 / ASTM B6 | TS EN 14616 / ISO 2063 |
| Melting point | ~ 420 degree | ~ 450℃eutectic |
Txheej kev ua tau zoo sib piv
Thaum thov ntawm qhov sib npaug thickness 200 μm, qhov kev ua tau zoo sib txawv ua kom pom tseeb:
| Performance Metric | Zinc ntshiab 99.995% | ZnAl15 85/15 |
|---|---|---|
| Cia siab rau kev pab cuam lub neej marine C5-M | 15-20 xyoo | 25-30 xyoo |
| Bond zog ISO 2063 | Ntau dua lossis sib npaug li 25 MPa | Ntau dua lossis sib npaug li 30 MPa |
| Qhov siab tshaj qhov kev pabcuam kub | 250 degree | 350 degree |
| Abrasion tsis kam | Nruab nrab | Zoo |
| Txheej ntom ntom | ~ 6.6 g/cm³ | 5.8 g / cm³ |
| Cov tshuaj tsw qab ntsev ASTM B117 | ~ 2000 hnub | ~ 4000 hnub |
| Tus nqi ntawm cov khoom siv txheeb ze | 1.0x pib | 1.3–1.5x |
Thaum twg los xaiv Pure Zinc vs Zinc -Aluminium Alloy
Pure Zinc Hlau yog pom zoo rau:
- Tiv thaiv hlau nyob rau hauv nruab nrab atmospheric ib puag ncig C2-C4 rau ISO 12944
- Tej yaam num uas tus nqi ib m² yog tus thawj tsav tsheb thiab 15-20 xyoo txheej lub neej yog txais
- Cov qauv uas yuav raug tshuaj xyuas thiab tswj xyuas tsis tu ncua
- Qhov siab tshaj plaws cathodic sacrificial tiv thaiv vim cov zinc ntshiab yog ib tug ntau active anode tshaj ZnAl
- Daim ntawv thov uas pleev xim los yog muab khi rau saum txheej yog npaj, raws li cov zinc ntshiab muab cov xim zoo dua
ZnAl15 Hlau yog pom zoo rau:
- Kev tiv thaiv hlau nyob rau hauv cov dej hiav txwv loj lossis sab ntug dej hiav txwv C5-M / CX rau ISO 12944
- Cov phiaj xwm xav tau yam tsawg kawg 25 xyoo txheej txheej tsis muaj kev saib xyuas loj
- Standalone txheej tshuab yam tsis muaj xim topcoats los yog nrog tsawg sealing
- Kev puas tsuaj siab lossis kev cuam tshuam rau txhua qhov chaw xws li fender systems thiab dej khov -cov nkoj tawg
- Kev pabcuam kub siab tshaj 250 degree, suav nrog cov khoom lag luam thiab cov qauv tso tawm
Zinc Hlau rau Choj Cathodic Protection - Case Piv txwv
Zinc thermal spray tau ua pov thawj txoj hauv kev tiv thaiv steel txuas txij li xyoo 1970. Cov txheej txheem ua haujlwm rau ob lub hom phiaj: raws li lub cev thaiv kev tiv thaiv thiab ua ib qho kev txi anode uas tiv thaiv cov hlau ntawm txheej tsis xws luag thiab txiav npoo.
Peb tau muab zinc hlau rau ntau qhov haujlwm tseem ceeb choj, suav nrog:
- Zaj sawv Choj Niagara Falls, Canada-USA- tus choj loj thoob ntiaj teb. Ntshiab zinc hlau 99.995% siv los ntawm arc tsuag ntawm 200-250 μm txheej thickness.
- Oresund Choj Denmark-Sweden- txoj kev thiab kev tsheb ciav hlau ua ke. ZnAl15 hlau siv rau thaj tsam marine txaws nrog 300 μm txheej specification.
- Sab hnub tuaj ntawm San Francisco-Oakland Bay Choj Tebchaws USA- seismic retrofit project. Zinc thermal spray siv rau cov khoom siv hlau tseem ceeb.
- Humber Choj UK- kev ncua choj. Zinc tsuag txheej siv rau steel chains thiab eeb thaum lub sij hawm tu cov kev pab cuam.
Rau kev siv choj, peb feem ntau pom zoo 99.995% ntshiab zinc hlau nrog tag nrho EN 1179 Hom 3.1 MTC cov ntaub ntawv. Kev sib xyaw ua ke ntawm thermal spray zinc ntxiv rau lub sealer topcoat muab tus nqi tshaj plaws - siv tau ntev - lub sij hawm tiv thaiv rau choj hlau.
Offshore Marine - Vim li cas ZnAl15 feem ntau nyiam
Hauv thaj chaw sab nrauv, suav nrog thaj chaw txaws, thaj chaw tidal thiab thaj chaw lawj, tus nqi corrosion yog ntau dua. Sab qaum teb Hiav Txwv, Gulf of Mexico thiab cov teb chaws Esxias sab hnub tuaj ntug dej hiav txwv raug cais C5-M lossis CX rau ISO 12944, uas yog ib pawg ntawm cov kab mob hnyav tshaj plaws.
Hauv cov xwm txheej no, ZnAl15 muaj qhov ntsuas tau zoo:
Ntev -Tus nqi sib piv ib m², lub neej 30 xyoo
| Nqi Factor | Ntshiab Zinc 200 μm | ZnAl{0}} μm |
|---|---|---|
| Khoom siv | 1.0x | 1.4x |
| Tus nqi thov | 1.0x | 1.0x |
| Txheej lub neej | 15-20 xyoo | 25-30 xyoo |
| Recoat cycles 30 xyoo | 1-2 recoats xav tau | 0-1 recoat xav tau |
| Tag nrho cov nqi 30 xyoo | 2.0x–2.5x | 1.0x–1.4x |
Tus nqi pib cov khoom siv rau ZnAl15 yog offset los ntawm kev saib xyuas tsawg dua ntawm tus qauv lub neej. Rau offshore platforms uas nkag mus rau recoating yog kim, tag nrho lifecycle tus nqi ntawm ZnAl15 feem ntau qis dua.
ISO 2063 Kev Ua Raws Cai thiab Txheej Txheem Txheej Txheem
Ob leeg ntshiab zinc thiab ZnAl15 thermal spray coatings yog them los ntawm ISO 2063, Thermal spraying - Zinc, txhuas thiab lawv cov alloys. Cov ntsiab lus tseem ceeb suav nrog:
- Yam tsawg kawg nkaus lub zog: 25 MPa rau zinc, 30 MPa rau ZnAl15
- Qhov tsawg kawg nkaus txheej thickness: 80-100 μm rau atmospheric siv, 150-200 μm rau marine siv
- Txheej thickness variation: Tsawg dua los yog sib npaug rau 30% tus neeg nyeem los ntawm tus nqi teev
- MTC xav tau rau txhua batch uas qhia tshuaj muaj pes tsawg leeg raws li tus qauv siv
Ob peb cov zinc hlau ntshiab thiab ZnAl15 xaim raug kuaj hauv -lub tsev rau ISO 2063 cov cai. Peb muab Hom 3.1 MTC rau EN 10204 nrog rau txhua qhov khoom xa tuaj, suav nrog kev tshuaj xyuas tshuaj thiab cov ntaub ntawv ntsuas tshuab.
Cov lus nug nquag
Q: Dab tsi yog qhov txawv ntawm zinc hlau thiab ZnAl hlau rau cov tshuaj tsuag thermal?
A: Ntshiab zinc hlau 99.995% Zn muab kev tiv thaiv cathodic muaj zog thiab siv rau feem ntau cov hlau tiv thaiv kev ua haujlwm. ZnAl15 hlau, feem ntau 85% Zn thiab 15% Al, muab kev ruaj khov dua, kev puas tsuaj zoo dua thiab kev pab cuam lub neej ntev dua hauv kev ua phem marine ib puag ncig, tab sis cov khoom siv tus nqi siab dua.
Q: Puas yog zinc hlau haum rau kev tiv thaiv choj cathodic?
A: Yog. Zinc thermal spray tau siv rau choj cathodic tiv thaiv txij li xyoo 1970s. Nws muab ob qho tib si lub cev tiv thaiv thiab kev tiv thaiv kev txi anode rau steel choj cov qauv, tshwj xeeb tshaj yog nyob rau hauv ntug dej hiav txwv thiab de-icing ntsev ib puag ncig. Ntau cov phiaj xwm choj qhia txog 99.995% zinc hlau ib EN 1179.
Q: Ntev npaum li cas lub thermal spray zinc txheej nyob rau hauv marine ib puag ncig?
A: Ntshiab zinc thermal spray coatings nrog 150-300 μm thickness feem ntau muab 15-20 xyoo kev tiv thaiv nyob rau hauv nruab nrab marine ib puag ncig. ZnAl15 txheej tuaj yeem txuas ntxiv mus txog 25-30 xyoo. Lub neej ua haujlwm tiag tiag nyob ntawm cov txheej txheej thickness, daim ntawv thov zoo thiab ib puag ncig hnyav.
Q: ZnAl15 hlau siv rau dab tsi?
A: ZnAl15 hlau, feem ntau yog 85% zinc thiab 15% txhuas, yog siv rau siab -kev tiv thaiv corrosion nyob rau hauv offshore platforms, nkoj hulls, ntug hiav txwv txuas hniav thiab cov qauv kev lag luam raug rau hauv marine ib puag ncig hnyav. Nws muab lub zog siab dua, kev tiv thaiv kub zoo dua thiab kev pab lub neej ntev dua piv nrog cov zinc txheej ntshiab.
Xav tau kev pab xaiv txoj cai thermal spray hlau?
Peb muab ob qho tib si 99.995% ntshiab zinc hlau thiab ZnAl15 alloy hlau nrog tag nrho cov ntaub ntawv MTC rau EN 10204 Hom 3.1. Peb pab pawg kws tshaj lij tuaj yeem muab cov lus pom zoo tsim txheej txheej, cov qauv qauv rau kev sim thiab kev ntsuas tus nqi ntawm lub neej rau koj qhov project.
Tiv tauj pebnrog rau koj qhov project specifications, nrog rau ib puag ncig chav kawm, tsim lub neej thiab txheej thickness, thiab peb yuav teb nrog matched cov lus pom zoo cov khoom thiab nqi.
- Zhenan Tshiab Khoom, Anyang, Henan, Suav teb|30+ xyoo nyob rau hauv metallurgical khoom mov|Hauv -tsev kuaj lub tsev|Kev xa tawm thoob ntiaj teb mus rau 20+ lub teb chaws
Thov Xaiv Hlau & Quote
