1.How ua cov txheej txheem passivation thiab cov yeeb yaj kiab zoo cuam tshuam rau lub sijhawm ntawm corrosion tsis kam?
Tsoos cov khoom siv caij nyoog tshaj plaws: Thaum cov yeeb yaj kiab tseem ceeb (muaj cov duab sib dhos (muaj cov txheej txheem cr³⁺ / Cru - hyh kho tom qab khawb me me). Qhov no tseem ceeb tshaj lub neej ntawm Galvanized txheej nyob rau hauv ib txwm mob, muab corrosion tsis kam 3-5 lub sij hawm siab tshaj underpassivated coils.
Chromium - pub dawb passiveation (xws li ua kom muaj peev xwm ua tau zoo, thiab ib puag ncig zoo me ntsis (kwv yees li 70% {5% ntawm qhov ntawd). Txawm li cas los xij, high - zoo cov txheej txheem chromium-dawb + sealer sib xyaw ua ke) tuaj yeem ua tiav cov txheej txheem domet) tuaj yeem ua tiav.
Passivation zaj duab xis thickness thiab kev sib xws: cov yeeb yaj kiab ntau dhau (<5nm) or localized coating gaps can result in "protection holes" and significantly shorten the coating lifespan. A uniform passivation film with a thickness of 8-15nm provides superior, long-lasting protection.
2.Yog cas yuav corrosiveness ntawm kev ua haujlwm ib puag ncig cuam tshuam rau corrosion kam?
Cov menyuam yaus ua kom huv: qhuav nyob rau hauv chaw ua haujlwm nyob deb ntawm chaw muaj kuab paug (clr Txheej passivation tuaj yeem ruaj khov rau lub sijhawm ntev, nrog lub neej ntawm 5-15 xyoo.
Muaj teeb meem kev nyab xeeb me ntsis Nrog nruab nrab av noo thiab cov kuab paug me, lub neej yog ib txwm muaj 2-5 xyoos.
Thaj chaw hnyav: Thaj chaw ntug dej hiav txwv (ntau cov ntsev), pa roj (cov av noo), thiab cov av noo (siab av). Corrosive media tuaj yeem nkag mus rau cov neeg hla passive, thiab cov nyiaj li cas thiaj li tsis ntev li 3 hlis mus rau 2 xyoos.
3.Qhov cuam tshuam dab tsi ua kev ntsuas khoom thiab kev tiv thaiv kev tiv thaiv tau muaj kev pab cuam?
Cov kev kho mob tom qab cov neeg them nyiaj ncaj qha cuam tshuam rau lub neej ua li cas:
Yog hais tias tom ntej pleev xim lossis xws li "passivation txheej ua pab txheej txheem nplaum, txuas ntxiv}
Yog tias raug yuam kev ncaj qha (tsis muaj kev tiv thaiv ntxiv) thiab raug kev cuam tshuam rau lub sijhawm ua kom zoo nkauj), xws li cov duab ua haujlwm tau yooj yim, ua kom luv rau lub neej dhau 50%.
4.What yog qhov sib txawv ntawm cov tshuaj ntsev ua rau cov txheej txheem sib txawv hom passivation?
UnetableVated Galvanized Chev: 24-72 teev
Txheem chrome - pub dawb passivation (silane): 120-240 teev
High -}} Zoo chrome - PUB DAWB (nrog Sealer): 300-500 teev
Tsoos Chromate Passivation: 500-1000 teev
5.Qhov yog cov hau kev txuas ntxiv rau kev ua kom lub corrosion tsis kam ntawm passivated galvanized chev?
Xaiv cov txheej txheem passivation uas phim rau ib puag ncig: "Chromium- be} passivation passivation (uas yuav tsum tau ua raws li ib puag ncig cov kev xav tau) yog nyiam nyob rau hauv ntug hiav txwv. Txheem chromium - sulivation pub dawb yog tau txais rau cov chaw pw hauv tsev.
Ntxiv cov kev tiv thaiv tom ntej: rau cov ntawv thov raug muab, lub tsho tiv no meej tuaj yeem siv tau (xws li cov cuab yeej siv). Rau kev siv sab nraum zoov, "passivation + xim txheej" composite txheej tuaj yeem xaiv tau.
Qee lub sijhawm txij nkawm: rau passivated galvanized parts raug nthuav tawm sab nraud), ntxuav ntawm plua plav thiab roj txhua 1-2 xyoos. Thov kom muaj kev tiv thaiv tsis muaj xeb yog tias tsim nyog los txuas ntxiv rau kev ua neej los ntawm 30% -50%.