Yuav ua li cas xim coated steel phaj ua tiav los tiv thaiv corrosion? Xim coated steel phaj, tseem hu ua xim coated steel phaj, yog qhov tshwm sim ntawm kev sib xyaw ua ke ntawm txheej txheej, txheej txheej ua ntej, primer, thiab topcoat. Peb hu nws "plaub hauv ib qho kev tiv thaiv corrosion ntawm cov xim coated steel phaj". Peb cov xim coated board yog ua los ntawm ntau lub npe ntawm cov txheej txheej thiab coated los ntawm 5 pawg thiab 48 txheej txheem, nrog zoo heev los tiv thaiv xeb.
Corrosion kuj thiab ntev-ntev fading kuj.
Yuav ua li cas peb thiaj li tiv thaiv corrosion ntawm cov xim coated steel daim hlau? Xim coated steel phaj, tseem hu ua xim coated steel phaj, yog qhov tshwm sim ntawm kev sib xyaw ua ke ntawm txheej txheej, txheej txheej ua ntej, primer, thiab topcoat. Peb hu nws "plaub hauv ib qho kev tiv thaiv corrosion ntawm cov xim coated steel phaj".
Cov txheej txheem ntawm cov xim hlau phaj plays lub luag haujlwm rau kev tiv thaiv corrosion. Cias muab, nws txuas ntxiv lub neej kev pab cuam ntawm steel phaj los ntawm kev siv nws tus kheej txheej. Tau kawg, hom, zoo, thiab thickness ntawm cov txheej yog qhov tseem ceeb ntawm lub sij hawm ntev ntawm txheej siv. Peb cov xim coated steel daim hlau tsuas yog siv galvanized, aluminium zinc, galvanized aluminium magnesium thiab lwm cov hlau coated los ntawm cov nroj tsuag loj hauv tsev, uas muaj zog dua thiab zoo dua corrosion kuj.
Cia peb tham txog txheej txheej ua ntej kho dua. Qhov no yog ib feem tseem ceeb ntawm kev tiv thaiv corrosion ntawm cov xim hlau daim hlau, uas feem ntau tsis saib xyuas. Cov txheej txheem ua ntej, tseem hu ua txheej txheej passivation, yuav tsum tau siv cov tshuaj passivation xws li phosphate lossis chromate kom passivate substrate nto ua ntej xim txheej. Qhov no tsis tsuas yog ua kom cov adhesion ntawm txheej, tab sis kuj plays lub luag hauj lwm nyob rau hauv corrosion kuj. Kev tshawb fawb tau pom tias nyob rau hauv qhov nruab nrab ntsev tsuag tshuaj tiv thaiv kev sim ntawm galvanized xim coated daim hlau, qhov kev pab cuam ntawm cov txheej txheem ua ntej kev kho mob mus txog 60%.
Cia peb tham txog primer dua. Ntawm qhov tod tes, primer plays lub luag haujlwm hauv kev ua kom cov adhesion ntawm txheej. Tom qab cov xim zaj duab xis yog permeable, nws yuav tsis detach los ntawm txheej, tiv thaiv blistering thiab detachment ntawm txheej. Ntawm qhov tod tes, vim muaj cov pigments qeeb-tso xws li chromates hauv primer, nws tuaj yeem passivate lub anode thiab txhim kho corrosion kuj ntawm txheej.
Thaum kawg, cia peb tham txog topcoat. Ntxiv nrog rau kev zoo nkauj, topcoat feem ntau ua haujlwm los thaiv lub hnub ci thiab tiv thaiv UV kev puas tsuaj rau txheej. Tom qab lub topcoat ncav cuag ib tug tej thickness, nws yuav txo tau lub tiam ntawm micropores, yog li tiv thaiv kev nkag mus ntawm corrosive media, txo cov dej thiab oxygen permeability ntawm txheej, thiab tiv thaiv txheej corrosion. Kev tiv thaiv UV thiab qhov ntom ntom ntawm cov txheej txheej sib txawv, thiab rau tib hom txheej, lub thickness ntawm cov xim zaj duab xis yog qhov tseem ceeb cuam tshuam rau corrosion. Peb cov xim coated boards yog tsim los ntawm kev xaiv ntau hom ntawm cov txheej txheem uas tau kho thaum kub kub, uas ua rau muaj kev tiv thaiv corrosion zoo dua thiab ua haujlwm ntev los tiv thaiv fading.
Post lub sij hawm: Mar-25-2024