1.What yog qhov laj thawj tseem ceeb rau lub ntsej muag dawb ntawm Galvanized Steel nto?
Kev tsim hws thiab noo teeb meem ib puag ncig
Cov tshuaj tsis muaj tshuaj ntau dua ◦ Kev Kho Mob Txheej Txheem: Passivation kev kho mob tom qab Galvanizing (xws li Chromate Passivation) tuaj yeem tiv thaiv corrosion. Yog tias txheej uas passivation yog puas los yog cov residual acid, alkali, thiab sulfate huv, nws yuav ua kom muaj kev huv si corrosion thiab ntxuav hniav dawb ntawm zinc.
Electrochemical corrosion (dissimilar hlau sib cuag): Thaum galvanized steel tiv tauj cov hlau thiab cov hmoov txhuas yog tsim nyob rau hauv ib puag ncig huab cua. Zinc tau nrawm rau corrode raws li anode thiab tsim cov khoom dawb corrosion.
Zinc Txheej Ua Kom Tsis Zoo
Uneven / dhau nyias zinc txheej: tsis muaj zinc kev pab them rau hauv zos, electrochemical corrosion yog ntxias tom qab cov hlau matrix raug.
Tsis Txaus Siab Zinc Alloy theem: Ntau dhau brittle ζ theem (fezn₁₃) nyob rau hauv txheej, thiab corrosion tsis kam yog txo.
2.What yog lub tshuab uas yog dab tsi uas condensed dej thiab noo ua rau muaj xeb dawb?
Zinc reacts nrog dej thiab oxygen nyob rau hauv ib puag ncig cov pa roj carbon dioxide los ua fillocate powative powonate (ib qho khoom noj dawb painstery).
Cov xwm txheej raug: Nyob rau hauv cov thawv xa khoom, cov av noo noo av, thiab qhib-huab cua cia tsis muaj npog thaum lub caij ntuj nag.
3.Qhov dab tsi yog cov kab ke uas ib txwm muaj rau saum npoo?
Cov kuab paug uas muaj tej yam:
Hws, ntiv tes ntiv tes (muaj ntsev)
Sulfide / chloride ions hauv dej nag (thaj chaw ntug dej hiav txwv)
Muaj hmoov av (muaj cov kua qaub acidic).
4.Qhov dab tsi yog cov kev daws teeb meem thiab tiv thaiv kev ntsuas?
Cia thiab Tsheb Thauj Mus Los
Zam kev kaw cov stacking: Siv cov ntoo ntoo cais cov chaw sib cais thiab ua kom dim tau.
Qhuav ib puag ncig: cov av noo nyob rau hauv lub tsev av yog tswj hwm qis dua 60%, thiab ib qho desiccant lossis dehumidifier yog siv.
Yellowure-pov thawj npog: thaum khaws cia sab nraud, npog nrog daim ntaub waterproof kom tsis txhob muaj nag.
Nthuav thiab Kev Tiv Thaiv
Tshem cov pa paug nyob rau lub sijhawm: yaug lub npoo hws thiab ntsev nrog dej huv, thiab so qhuav nrog daim ntaub mos muag.
Siv cov tshuaj tiv thaiv me me: ◦ Teeb Dawb Ruav: Siv cov kua tshuaj txhuam hniav tawv me me), yaug nrog dej huv thiab ua kom qhuav.
Cov tawv ncauj dawb xeb: Siv zinc cov ntaub ntawv tshwj xeeb daws tau kev daws teeb meem rov ua dua thiab ua yeeb yaj kiab tiv thaiv.
Kev tiv thaiv xeb nrog cov roj: thov lub teeb tiv thaiv cov roj (xws li vaseline) rau cov sijhawm luv luv) rau lub sijhawm luv luv.
Zam kev sib tiv tauj ntawm kev sib tw me me. Siv cov ntaub ntawv insulating (roj teeb cov ntaub pua tsev, yas tsho) kom cais tawm cov hlau sib txawv.
5. Dab tsi yog qhov sib txawv ntawm cov xeb dawb thiab ib txwm zinc oxidation?
Cov Oxidation li qub: Zinc ua cov yeeb yaj kiab xim dawb-dawb (Zno) tom qab kis tau huab cua, uas muaj qhov cuam tshuam thiab tsis yooj yim los poob tawm.
Cov xeb dawb (tsis muaj xoob): cov hmoov xoob, uas yuav ua rau lub hauv paus tom qab so thiab xav tau ua raws sijhawm.