Kev xeb yog txheej txheem uas hlau tau tawg los ntawm qhov muaj ntau yam tshuaj oxidizing nyob ib puag ncig. Corrosion siv ntau hom thiab tuaj yeem muaj ntau yam ua rau. Ib qho piv txwv ib txwm yog txheej txheem xeb, nyob rau hauv uas cov hlau oxidizes thaum muaj dej noo. Corrosion yog teeb meem loj rau cov tuam txhab tsim vaj tsev, nkoj, dav hlau, tsheb, thiab lwm yam khoom siv hlau. Piv txwv li, thaum siv hlau ua ib feem ntawm tus choj, kev txhim kho cov hlau, uas tuaj yeem ua rau puas los ntawm kev xeb, yog qhov tseem ceeb rau kev nyab xeeb ntawm cov neeg siv tus choj. Saib Kauj Ruam 1 hauv qab no kom pib kawm paub yuav ua li cas tiv thaiv cov hlau los ntawm kev hem thawj ntawm kev xeb thiab yuav ua li cas qeeb tus nqi ntawm kev xeb.
Kauj ruam
Txoj Kev 1 ntawm 3: Nkag Siab Hom Hom Hlau Hlau Corrosion
Vim tias muaj ntau hom hlau sib txawv siv niaj hnub no, cov neeg tsim khoom thiab cov tsim khoom yuav tsum tiv thaiv ntau hom kev xeb. Txhua cov hlau muaj cov khoom siv hluav taws xob tshwj xeeb uas txiav txim siab seb hom kev xeb (yog tias muaj) nws puas raug rau. Cov lus hauv qab no piav qhia qee qhov kev ua haujlwm tsis zoo thiab hom kev xeb uas lawv tuaj yeem ua tau.
| Hlau | Hlau Corrosion Vulnerability | Cov Txheej Txheem Tiv Thaiv Kab Mob | Kev ua Galvanic* |
|---|---|---|---|
| Stainless hlau (Passive) | Uniform nres, galvanic, perforated, tawg (tag nrho tsuas yog hauv dej hiav txwv) | Ntxuav, tiv thaiv txheej lossis foob | Tsawg (thawj daim ntawv ntawm kev xeb ua ib txheej tiv thaiv oxidation) |
| Hlau | Uniform nres, galvanic, tawg | Ntxuav, tiv thaiv txheej lossis foob, galvanization, tiv thaiv xeb | Siab |
| Tooj dag | Uniform nres, dezincification, kev nyuaj siab | Kev tu, tiv thaiv txheej lossis foob (feem ntau yog roj lossis kua roj vanish), ntxiv txhuas, txhuas, lossis arsenic rau cov hlau nplaum | Tam sim no |
| Txhuas | Galvanic, qhov, tawg | Kev tu, tiv thaiv txheej lossis foob, anode, galvanization, tiv thaiv cathodic, rwb thaiv tsev hluav taws xob | Siab (thawj qhov xeb tsim cov txheej txheem tiv thaiv oxidation) |
| Tooj liab | Galvanic, qhov, qhov zoo nkauj stain | Kev tu, tiv thaiv txheej lossis ntim khoom, ntxiv npib tsib xee rau cov khoom siv hlau (tshwj xeeb tshaj yog rau cov ntsev) | Tsawg (thawj qhov kev xeb ua ib daim ntawv tuav pov hwm) |
*Thov nco ntsoov tias kab ntawv "Galvanic Activity" hais txog cov tshuaj lom neeg muaj feem cuam tshuam nrog hlau raws li tau piav qhia los ntawm lub rooj galvanic ntawm cov khoom siv. Rau lub hom phiaj ntawm lub rooj no, "siab dua cov khoom siv galvanic ntawm cov hlau, nrawm dua nws yuav raug galvanic corrosion thaum ua ke nrog cov hlau tsis tshua muaj zog."
Kauj Ruam 1. Tiv thaiv kom tsis zoo sib tsoo los ntawm kev tiv thaiv cov hlau nto
Kev tiv thaiv kev tiv thaiv tsis zoo ib yam (qee zaum luv rau "zoo ib yam" xeb) yog ib hom kev xeb uas tshwm sim, raws li, nyob rau hauv ib yam zoo ib yam li nthuav tawm cov hlau saum npoo. Hauv hom kev xeb no, tag nrho saum npoo ntawm cov hlau tau tawm tsam los ntawm kev xeb thiab, yog li, kev txhim kho corrosion ua haujlwm ntawm tus nqi sib xws. Piv txwv li, yog tias lub ru tsev hlau uas tsis muaj kev tiv thaiv tsis tu ncua los nag, tag nrho saum npoo ntawm lub ru tsev yuav nyob rau hauv kev sib cuag nrog cov dej ib yam thiab yog li yuav corrode ntawm tus nqi sib xws. Txoj hauv kev yooj yim tshaj plaws los tiv thaiv kev tawm tsam tsis zoo feem ntau yog tso qhov thaiv thaiv ntawm cov txiv hmab txiv ntoo thiab tus neeg sawv cev tiv thaiv. Qhov no tuaj yeem yog ntau yam - xim, roj foob, "lossis" cov tshuaj siv hluav taws xob xws li galvanizing zinc txheej.
Hauv cov xwm txheej hauv av lossis raus dej, daim thaiv thaiv cathodic kuj yog qhov kev xaiv zoo
Kauj Ruam 2. Tiv thaiv galvanic corrosion los ntawm kev txiav tawm qhov ntws ntawm ions los ntawm ib lub hlau mus rau lwm qhov
Ib daim ntawv tseem ceeb ntawm kev xeb uas tuaj yeem tshwm sim tsis hais lub cev lub zog ntawm cov hlau koom nrog yog galvanic corrosion. Galvanic corrosion tshwm sim thaum ob lub hlau uas muaj peev xwm sib txawv ntawm cov hluav taws xob tuaj rau hauv kev sib cuag nrog lub xub ntiag ntawm cov hluav taws xob (xws li dej ntsev) uas tsim txoj hauv kev siv hluav taws xob ntawm lawv. Thaum qhov no tshwm sim, cov hlau ions ntws los ntawm cov hlau nquag ua rau cov hlau tsis tshua muaj zog, ua rau cov hlau nquag ua rau xeb sai dua thiab cov hlau tsis tshua muaj zog kom xeb qeeb. Hauv cov lus siv tau, qhov no txhais tau tias kev txhim kho xeb yuav ua rau cov hlau muaj zog ntau ntxiv nyob rau ntawm qhov kev sib cuag ntawm ob lub hlau.
- Ib txoj hauv kev ntawm kev tiv thaiv uas tiv thaiv kev ntws ntawm ions ntawm cov hlau tuaj yeem nres galvanic corrosion. Muab cov hlau tiv thaiv txheej tuaj yeem pab tiv thaiv electrolytes los ntawm ib puag ncig tsim txoj hauv kev xa hluav taws xob ntawm ob lub hlau, uas cov txheej txheem tiv thaiv hluav taws xob zoo li galvanizing thiab anode kuj ua haujlwm zoo. Koj tseem tuaj yeem tiv thaiv galvanic corrosion ntawm hluav taws xob rwb thaiv tsev ntawm cov hlau hauv kev sib cuag.
- Ib qho ntxiv, kev siv cathodic lossis anode tiv thaiv tuaj yeem tiv thaiv cov hlau tseem ceeb los ntawm kev xeb hlau. Saib hauv qab no kom paub ntau ntxiv.
Kauj Ruam 3. Tiv thaiv pitting xeb los ntawm kev tiv thaiv cov hlau saum npoo av, zam cov tshuaj chloride hauv ib puag ncig, thiab zam kev nicks thiab khawb
Pitting yog ib daim ntawv ntawm kev xeb uas tshwm sim ntawm qhov ntsuas me me tab sis tuaj yeem muaj qhov tshwm sim loj. Qhov yog qhov kev txhawj xeeb tseem ceeb rau cov hlau uas tau txais nws qhov kev tiv thaiv xeb los ntawm cov txheej nyias nyias ntawm qhov sib xyaw ua ke ntawm nws saum npoo, vim tias daim ntawv xeb no tuaj yeem ua rau tsis ua haujlwm hauv cov xwm txheej uas txheej txheej tiv thaiv ib txwm tiv thaiv nws. Qhov tshwm sim qhov twg ib qho me me ntawm cov hlau poob nws cov txheej tiv thaiv tsis zoo. Thaum qhov no tshwm sim, galvanic corrosion tshwm sim ntawm qhov ntsuas me me, ua rau tsim cov qhov me me hauv cov hlau. Hauv qhov no, ib puag ncig dhau los ua kua qaub, uas ua kom cov txheej txheem nrawm dua. Qhov feem ntau yog tiv thaiv los ntawm kev thov txheej tiv thaiv rau saum npoo hlau thiab/lossis siv kev tiv thaiv cathodic.
Raug mus rau qhov chaw muaj tshuaj chloride siab (xws li, piv txwv li, dej ntsev) tuaj yeem ua kom cov txheej txheem tawg
Kauj Ruam 4. Tiv thaiv kom tsis txhob tawg los ntawm kev txo qhov chaw nruj hauv qhov khoom tsim
Kev tawg tawg tshwm sim hauv cov khoom siv hlau qhov chaw nkag mus rau cov dej ib puag ncig (huab cua lossis kua) yog qhov tsis zoo - piv txwv li, hauv qab ntsia liaj qhov rooj, hauv qab ntxhua khaub ncaws, hauv qab lub qhov txhab, lossis nruab nrab pob khawm pob qij txha. Kev sib txhuam tawg tshwm sim qhov twg qhov sib txawv nruab nrab ntawm cov hlau saum npoo yog dav txaus kom tso cov kua nkag mus tab sis nqaim txaus kom cov kua ua kom yooj yim khiav tawm thiab ua rau tsis nyob twj ywm. Ib puag ncig hauv qhov chaw me me no dhau los ua xeb thiab cov hlau pib xeb hauv cov txheej txheem zoo ib yam li txhawm rau xeb. Tiv thaiv kom tsis txhob tawg yog feem ntau yog teeb meem tsim. Los ntawm kev txo qis qhov muaj qhov khoob me me hauv kev tsim cov khoom hlau los ntawm kev npog cov khoob no lossis muab kev ncig, nws muaj peev xwm txo qis kev xeb.
Kev tawg corrosion yog qhov kev txhawj xeeb tshwj xeeb thaum tuav cov hlau xws li txhuas uas muaj txheej txheem tiv thaiv txheej txheej dhau los, vim cov txheej txheem tawg tuaj yeem ua rau tawg ntawm txheej no
Kauj Ruam 5. Tiv thaiv kev ntxhov siab txhawm rau xeb los ntawm kev siv tsuas yog cov khoom ruaj ntseg thiab/lossis txhawm rau txhawm rau
Kev nyuab siab corrosion cracking (SCC) yog ib daim ntawv uas cuam tshuam txog kev cuam tshuam kev cuam tshuam tsis zoo uas yog kev txhawj xeeb rau cov kws tsim qauv tsim cov tsev tsim uas txhawb nqa cov khoom hnyav. Nrog rau qhov tshwm sim ntawm SCC, cov hlau txhawb nqa cov khoom tawg thiab tawg hauv qab nws qhov txwv txwv - hauv cov xwm txheej hnyav, kom tsawg dua. Thaum muaj cov tshuaj corrosive ions, cov kab tawg me me hauv cov hlau ua los ntawm kev sib zog tensile ntawm cov nqi hnyav kis tau zoo li cov corrosive ions mus txog qhov kawg ntawm qhov tawg. Qhov no ua rau tawg kom maj mam nthuav dav thiab tuaj yeem ua rau lub cev tsis ua haujlwm. SCC yog qhov txaus ntshai tshwj xeeb vim tias nws tuaj yeem tshwm sim txawm tias muaj cov ntaub ntawv uas feem ntau tsis xeb hlau. Qhov no txhais tau tias qhov teeb meem xeb tshwm sim thaum seem ntawm cov hlau saum npoo zoo li tsis muaj kev cuam tshuam.
- Tiv thaiv SCC yog ib nrab teeb meem tsim. Piv txwv li, xaiv cov ntaub ntawv uas muaj SCC tiv taus nyob rau ib puag ncig uas cov hlau yuav ua haujlwm thiab ua kom ntseeg tau tias cov khoom siv hlau ua kom raug kuaj xyuas zoo tuaj yeem pab tiv thaiv SCC. Ib qho ntxiv, cov txheej txheem ntawm kev ntxiv dag zog rau cov hlau tuaj yeem tshem tawm cov kev nyuab siab los ntawm kev tsim.
- SCC tau paub tias ua rau hnyav dua los ntawm qhov kub thiab muaj cov tshuaj chloride uas muaj cov dej yaj.
Txoj Kev 2 ntawm 3: Tiv Thaiv Kev Corrosion nrog Kev daws Tsev
Kauj Ruam 1. Pleev xim hlau
Tej zaum qhov feem ntau thiab pheej yig txoj hauv kev tiv thaiv cov hlau los ntawm kev xeb yog tsuas yog npog nws nrog lub tsho xim. Cov txheej txheem xeb cuam tshuam nrog ya raws thiab cov neeg ua haujlwm oxidizing cuam tshuam nrog cov hlau saum npoo. Txoj kev ntawd, yog tias cov hlau tau npog nrog cov xim pleev xim tiv thaiv, tsis muaj dej noo lossis cov neeg ua kom oxidizing tuaj yeem cuam tshuam nrog cov hlau nws tus kheej thiab tsis muaj kev xeb.
- Txawm li cas los xij, xim nws tus kheej yog qhov ua rau degradation. Rov pleev xim thaum twg ib yam khoom tawg, hnav lossis puas. Yog tias cov xim pleev xim kom cov hlau raug tawm, nco ntsoov tshuaj xyuas qhov xeb lossis puas rau cov hlau raug.
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Muaj ntau txoj hauv kev pleev xim rau xim hlau. Cov neeg ua haujlwm hlau feem ntau siv ob peb txoj hauv kev no txhawm rau ua kom txhua yam khoom siv hlau tau txais txheej zoo. Hauv qab no yog qee qhov qauv piv txwv nrog cov lus hais txog lawv kev siv:
- Txhuam - siv rau qhov nyuaj kom ncav cuag qhov chaw.
- Cov menyuam - siv los npog qhov chaw loj. Pheej yig thiab yooj yim.
- Tshuaj tsuag cua - siv los npog qhov chaw loj. Sai dua tab sis tsis yooj yim li cov menyuam (cov xim tsis zoo).
- Airless spray/Electrostatic airless spray - siv los npog qhov chaw loj. Ceev thiab tso cai sib txawv qib ntawm tuab/nyias sib xws. Tsis yog pov tseg zoo li cov dej tsuag tas li. Khoom siv yog kim heev.
Kauj Ruam 2. Siv cov xim pleev xim rau dej kom pom cov hlau
Cov khoom hlau uas tsis tu ncua (lossis tas li) nyob hauv kev sib cuag nrog dej, xws li nkoj, xav tau cov xim tshwj xeeb los tiv thaiv qhov tshwm sim siab ntawm kev xeb. Hauv qhov xwm txheej no, "ib txwm" xeb nyob rau hauv daim ntawv xeb tsis yog qhov kev txhawj xeeb nkaus xwb (txawm hais tias nws loj heev), raws li lub neej nyob hauv hiav txwv (barnacles, thiab lwm yam) tuaj yeem loj hlob ntawm cov hlau tsis muaj kev tiv thaiv uas tuaj yeem yog qhov hnav thiab rhuav thiab ntxiv corrosion Txhawm rau tiv thaiv cov khoom hlau xws li nkoj thiab lwm yam, nco ntsoov siv cov xim epoxy marine zoo. Hom xim no tsis tsuas yog tiv thaiv cov hlau los ntawm kev ya raws, tab sis tseem tiv thaiv kev loj hlob ntawm kev ua neej nyob hauv hiav txwv ntawm nws qhov chaw.
Kauj Ruam 3. Thov tiv thaiv lub lubrication kom txav cov hlau
Rau cov tiaj tiaj thiab cov hlau zoo li qub, pleev xim ua haujlwm zoo heev ntawm kev khaws cov dej noo thiab tiv thaiv kev xeb yam tsis cuam tshuam rau kev siv hlau. Txawm li cas los xij, xim feem ntau tsis haum rau txav cov hlau. Piv txwv li, yog tias koj pleev xim rau ntawm lub qhov rooj pob khawm, thaum cov xim qhuav, nws yuav tuav lub pob khawm, thaiv nws txoj kev txav chaw. Yog tias koj yuam lub qhov rooj qhib, cov xim yuav tawg, tawm hauv chav kom muaj dej noo mus txog rau cov hlau. Qhov kev xaiv zoo dua rau cov khoom siv hlau xws li pob khawm, pob qij txha, shafts, thiab lwm yam yog cov dej tsis haum rau lub cev tsis haum. Lub tsho tiv no ntawm cov roj nplua nyeem yuav tshem tawm cov dej noo thaum ua kom ntseeg tau du thiab yooj yim txav ntawm koj cov hlau.
Vim tias cov roj nplua nyeem tsis qhuav hauv qhov chaw zoo li xim, lawv tuaj yeem ua rau lub sijhawm qis thiab xav tau rov siv dua. Ncua sij hawm rov siv cov roj nplua nyeem rau cov hlau kom ntseeg tau tias lawv ua haujlwm tau zoo raws li kev tiv thaiv foob
Kauj Ruam 4. Ntxuav cov hlau kom huv ua ntej pleev xim lossis pleev xim
Txawm hais tias koj siv cov xim tsis tu ncua, xim dej hiav txwv, lossis tiv thaiv lubrication/sealing, koj yuav tsum xyuas kom koj cov hlau huv thiab qhuav ua ntej pib txheej txheem thov. Nco ntsoov tias cov hlau tsis muaj cov av qeeg, roj, weld seem, lossis xeb, vim qhov no tuaj yeem ua rau koj lub dag zog los ntawm kev txhawb nqa kev txhim kho yav tom ntej.
- Av, roj, thiab lwm yam khib nyiab tuaj yeem cuam tshuam nrog xim thiab lubrication los ntawm kev tiv thaiv cov xim lossis roj nplua nyeem los ntawm kev ua ncaj qha mus rau cov hlau saum npoo. Piv txwv li, yog tias koj pleev xim rau ntawm cov ntawv hlau nrog cov seem hlau nyob saum, cov xim yuav qhuav rau saum cov zom, tawm hauv qhov chaw khoob hauv cov hlau hauv qab. Yog tias thiab thaum twg cov cuab yeej ntog. Ib feem raug yuav raug rau xeb.
- Yog hais tias pleev xim lossis pleev xim rau saum npoo hlau nrog cov xeb ua ntej, koj lub hom phiaj yuav tsum ua kom cov nplaim zoo li qub thiab ib txwm muaj peev xwm ua kom ntseeg tau tias qhov ua tau zoo tshaj plaws muab khi rau hlau. Siv xaim txhuam, ntawv xuab zeb, thiab/lossis tshuaj xeb tshem tawm kom tshem tawm xeb ntau li ntau tau.
Kauj Ruam 5. Khaws cov khoom tiv thaiv hlau kom tsis txhob ya raws
Raws li tau sau tseg saum toj no, feem ntau cov ntawv ntawm kev xeb yog ua kom hnyav dua. Yog tias koj tsis tuaj yeem thov daim npog tiv thaiv xim lossis foob rau koj cov hlau, koj yuav tsum tau ceev faj kom paub tseeb tias nws tsis raug rau ya raws. Ua kom siv zog tiv thaiv cov cuab yeej hlau tsis qhuav tuaj yeem ua rau lawv muaj txiaj ntsig thiab txuas ntxiv lawv lub neej kom zoo. Yog tias koj cov hlau raug dej lossis dej noo, nco ntsoov ntxuav thiab qhuav nws tam sim tom qab siv los tiv thaiv kev xeb los ntawm kev pib.
Ntxiv rau kev tshuaj xyuas cov dej noo thaum siv, nco ntsoov khaws cov khoom hlau sab hauv tsev, hauv qhov chaw huv thiab qhuav. Rau cov khoom loj uas tsis haum rau hauv txee lossis txee, npog cov khoom nrog daim ntaub. Qhov no pab tshem tawm cov dej noo los ntawm huab cua thiab tiv thaiv kom tsis txhob muaj plua plav los ntawm qhov chaw
Kauj Ruam 6. Ua kom ntseeg tau tias cov hlau nto huv si li sai tau
Tom qab txhua qhov siv cov khoom siv hlau, tsis hais seb cov hlau tau pleev xim los yog tsis, nco ntsoov ntxuav nws qhov chaw ua haujlwm, tshem tawm cov av, roj, lossis hmoov av. Kev sib sau ntawm cov av ntawm cov hlau tuaj yeem ua rau hnav thiab rhuav cov hlau thiab/lossis nws cov txheej tiv thaiv, ua rau xeb nyob rau lub sijhawm.
Txoj Kev 3 ntawm 3: Kev Tiv Thaiv Kev Xeb nrog Kev Txhim Kho Cov Hluav Taws Xob Hluav Taws Xob
Kauj Ruam 1. Siv cov txheej txheem galvanization
Galvanized hlau yog hlau uas tau pleev xim nrog txheej txheej zinc kom tiv thaiv nws los ntawm kev xeb. Zinc yog tshuaj lom ntau dua li cov hlau hauv qab, yog li nws oxidizes thaum raug cua. Thaum cov txheej zinc tau oxidized, nws tsim cov txheej txheem tiv thaiv, tiv thaiv kev txhim kho ntxiv ntawm cov hlau hauv qab. Qhov feem ntau hom galvanization niaj hnub no yog txheej txheem hu ua kub dip galvanization uas ib daim hlau (feem ntau yog hlau) tau raus rau hauv kub molten zinc kom tau txais txheej txheej.
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Cov txheej txheem no cuam tshuam nrog kev tuav cov tshuaj lom neeg hauv lub cev, qee qhov uas muaj kev phom sij ntawm chav sov, ntawm qhov kub siab heev thiab yuav tsum tsis txhob sim los ntawm lwm tus uas tsis yog kws tshaj lij. Hauv qab no yog cov theem pib ntawm cov txheej txheem kub dip galvanizing rau cov hlau:
- Cov hlau tau ntxuav nrog cov tshuaj kub kom tshem tawm cov av, roj, pleev xim, thiab lwm yam, tom qab ntawd yaug kom huv.
- Hlau tau raus rau hauv cov kua qaub kom tshem cov nplai zeb, tom qab ntawd yaug.
- Cov khoom siv hu ua "flux" tau thov rau cov hlau thiab tso cai kom qhuav. Qhov no pab kawg txheej txheej zinc ua raws cov hlau.
- Cov hlau tau tso rau hauv kub zinc thiab tso cai kom mus txog qhov kub zinc.
- Cov hlau tau txias hauv "lub tank txias" uas muaj dej.
Kauj Ruam 2. Siv lub anode sacrificial
Ib txoj hauv kev los tiv thaiv cov khoom ferrous los ntawm kev xeb yog txhawm rau txuas hluav taws xob me me, cov hlau ua tshuaj hu ua "anode anode" rau nws. Vim tias kev sib raug zoo ntawm hluav taws xob hluav taws xob ntawm lub cev hlau loj thiab lub cev me me (uas tau piav qhia luv luv hauv qab no), tsuas yog cov hlau me me thiab cov tshuaj tiv thaiv yuav raug xeb, tawm hauv cov hlau loj thiab tseem ceeb. Thaum lub anode sacrificial corrodes tag, nws yuav tsum tau hloov lossis cov hlau loj dua yuav corrode. Txoj hauv kev tiv thaiv xeb no feem ntau yog siv rau cov txheej txheem faus xws li cov tso tsheb tso rau hauv av, lossis cov khoom uas nyob sib cuag nrog dej, xws li nkoj.
- Lub faus anode yog ua los ntawm ntau hom sib txawv ntawm cov hlau reactive. Zinc, txhuas, thiab magnesium yog peb yam uas feem ntau siv rau lub hom phiaj no. Vim tias cov khoom siv tshuaj lom neeg ntawm cov khoom siv no, zinc thiab txhuas feem ntau siv rau cov khoom siv ferrous hauv cov dej ntsev, hos magnesium zoo dua rau cov hom phiaj dej tshiab.
- Kev siv anodes tuaj yeem siv tau vim yog txheej txheem tshuaj lom neeg ntawm kev txhuam nws tus kheej. Thaum cov khoom hlau ua kom tawg, thaj chaw uas zoo sib xws rau anode thiab cathode hauv cov xov tooj hluav taws xob tau tsim ib txwm muaj. Cov hluav taws xob ntws los ntawm anode ntawm cov hlau hlau mus rau ib puag ncig cov roj ntsha. Vim hais tias qhov kev txi anode yog qhov ua tau zoo dua piv rau cov hlau tau tiv thaiv, cov khoom nws tus kheej dhau los ua cov cathodic los ntawm kev sib piv thiab, yog li, cov hluav taws xob ntws tawm ntawm cov anode uas txi, ua rau nws xeb tab sis tsis yog seem ntawm cov hlau.
Kauj Ruam 3. Siv "kev txaus siab tam sim no"
Txij li cov txheej txheem hluav taws xob tom qab kev xeb ntawm cov hlau cuam tshuam nrog cov hluav taws xob nyob hauv daim ntawv ntawm cov hluav taws xob ntws tawm ntawm cov hlau, nws tuaj yeem siv cov hluav taws xob sab nraud tam sim no los tswj cov dej txhaws thiab tiv thaiv kev xeb. Cov txheej txheem no (hu ua "txaus siab rau tam sim no") yog cov hlau tsis zoo txuas ntxiv ntawm cov hlau tiv thaiv. Cov nqi no ua rau cov dej ntws ua rau cov hluav taws xob ntws tawm ntawm cov hlau, tiv thaiv kev xeb. Hom kev tiv thaiv no feem ntau yog siv rau cov txheej txheem faus hlau xws li cov tso tsheb hlau luam thiab cov kav dej.
- Nco ntsoov tias hom hluav taws xob tam sim no siv rau kev tiv thaiv kev tiv thaiv tam sim no feem ntau yog ncaj qha tam sim no (DC).
- Feem ntau, qhov kev txaus siab tam sim no uas tiv thaiv kev xeb yog tsim los ntawm faus ob lub hlau anodes hauv av nyob ze cov khoom tiv thaiv hlau. Cov hluav taws xob tam sim no xa los ntawm cov xaim hluav taws xob ntawm qhov anode, uas tom qab ntawd ntws los hauv av thiab nkag mus rau cov khoom siv hlau. Cov hluav taws xob ntws los ntawm cov khoom hlau thiab tom qab ntawd rov qab mus rau qhov chaw hluav taws xob (cov tshuab hluav taws xob, cov hloov hluav taws xob, thiab lwm yam) los ntawm kev thaiv cov xov hlau.
Kauj Ruam 4. Siv anodizing
Anodizing yog txheej txheej txheej tshwj xeeb uas siv los tiv thaiv hlau los ntawm kev xeb. Yog tias koj tau pom lub teeb xim hlau carabiner, koj tau pom cov xim hlau xim anodized. Es tsis txhob koom nrog daim ntawv thov lub cev tiv thaiv txheej, xws li pleev xim, anodizing siv hluav taws xob tam sim no los muab cov hlau tiv thaiv txheej uas tiv thaiv yuav luag txhua daim ntawv xeb.
- Cov txheej txheem tshuaj tom qab anodization cuam tshuam nrog qhov tseeb tias ntau cov hlau, xws li txhuas, ib txwm tsim cov khoom lag luam tshuaj hu ua oxides thaum sib cuag nrog oxygen hauv huab cua. Qhov no ua rau cov hlau ib txwm muaj txheej txheej txheej txheej txheej sab nrauv uas tiv thaiv (rau qib sib txawv, nyob ntawm cov hlau) tiv thaiv kev xeb ntxiv. Cov hluav taws xob tam sim no siv hauv cov txheej txheem anodizing feem ntau tsim cov tuab ntawm cov oxide saum npoo hlau ntau dua li ib txwm, muab kev tiv thaiv zoo los ntawm kev xeb.
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Muaj ntau txoj hauv kev sib txawv los pub hlau. Hauv qab no yog cov theem pib ntawm ib qho ntawm cov txheej txheem anodizing. Saib Yuav Ua Li Cas Anodize Aluminium kom paub ntau ntxiv.
- Aluminium tau ntxuav thiab de-oiled.
- Cov khoom tsis huv ntawm cov nplaim aluminium tau muab tshem tawm nrog cov tshuaj de-smut.
- Cov txhuas tau muab tso rau hauv cov kua qaub ntawm qhov tam sim no thiab kub (piv txwv li, 12 amps/sq ft thiab 70-72 degrees F (21-22 degrees C).
- Aluminium raug tshem tawm thiab yaug.
- Aluminium yog xaiv tau qhia rau hauv cov zas xim ntawm 100-140 degrees F (38-60 degrees C).
- Aluminium tau ntim los ntawm kev raus nws hauv cov dej npau li 20-30 feeb.
Kauj Ruam 5. Siv cov hlau tsis huv
Raws li tau sau tseg saum toj no, qee cov hlau ib txwm ua cov txheej txheej tiv thaiv txheej thaum raug cua. Qee cov hlau tsim cov txheej txheej oxide no kom zoo uas nws dhau mus ua tshuaj tsis muaj zog. Peb hais tias hlau yog "passive" hauv kev hais txog txheej txheem "passive" uas nws tsis tshua muaj zog. Nyob ntawm kev siv, cov khoom siv hlau tsis zoo yuav tsis "xav tau" kev tiv thaiv ntxiv kom ua rau lawv tiv taus xeb.
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Ib qho piv txwv uas paub zoo txog cov hlau passive yog cov hlau tsis huv. Cov hlau tsis huv yog cov hlau sib xyaw ua ke ntawm cov hlau thiab chromium uas tiv taus xeb nyob hauv ntau qhov xwm txheej yam tsis xav tau kev tiv thaiv. Rau feem ntau niaj hnub siv, kev xeb feem ntau tsis yog kev txhawj xeeb nrog cov hlau tsis huv.
Txawm li cas los xij, nws yuav tsum tau hais tias nyob rau qee qhov xwm txheej, cov hlau tsis xeb tsis tiv taus 100% - piv txwv li, hauv dej ntsev. Ib yam li ntawd, ntau cov hlau tsis dhau ua dhau los tsis nyob hauv huab cua huab cua thiab yog li tsis haum rau txhua daim ntawv thov
Lub tswv yim
- Ceev faj txog kev sib txhuam sib xyaw ua ke. Qhov no cuam tshuam rau cov hlau lub peev xwm los puab lossis siv, thiab txo cov hlau tag nrho lub zog.
- American Boat and Yacht Council feem ntau pom zoo kom khi lub nkoj. Txawm li cas los xij, txhuas thiab cov hlau hlau yuav tsum tsis txhob raug khi los tiv thaiv cov hlau los ntawm corroding.
Ceeb toom
- Tsis txhob tso cov hlau uas xeb hnyav rau hauv tsheb lossis nkoj. Cov qib ntawm kev xeb sib txawv, tab sis kev xeb tuaj yeem qhia qhov kev puas tsuaj loj. Rau kev nyab xeeb, hloov lossis tshem tawm tag nrho cov cim qhia ntawm xeb hlau.
- Thaum siv lub anode fij, tsis txhob pleev xim nws. Qhov ntawd yuav ua rau nws tsis yooj yim rau cov tshuab hluav taws xob hla mus rau ib puag ncig, tshem tawm nws qhov kev tiv thaiv xeb tiv thaiv lub zog.
