Lub txheej xim yog txiav txim siab ua kom ruaj khov thiab tiv taus corrosion ntawm lub tsev. Cov ntawv thov sib txawv tuaj yeem ua kom tau raws li kev pab cuam lub neej los ntawm xaiv cov txheej sib txawv, txheej thiab tuab.
Plating, cov qauv siv dav dav rau cov xim sib txawv ua vaj tsev yog kub-dip galvanized thiab kub-dip aluminium-zinc. Rau cov xim lo, daim ntawv thov thaj chaw ntawm ob lub substrates tsis sib txawv ntau, thiab nyob rau hauv ib puag ncig acidic, txhuas-zinc-plated substrate yog qhov kev xaiv zoo dua. Rau ntub thiab alkaline ib puag ncig, qhov zoo ntawm kev txhim kho corrosion ntawm galvanized substrate tau cuam tshuam.
Kev Txheej Txheem, cov tsho tiv no sab saum toj ntawm kev siv cov tsho tiv no feem ntau yog polyester (PE), polyurethane (PU), silicon hloov polyester (SMP), fluorocarbon (PVDF), thiab huab cua tiv thaiv polyester (HDP).
Kom ci, nyob rau sab nraum zoov siv cov xim coated panels, poob ntawm lub teeb yog qhov tshwm sim ntxov tshaj plaws, tshwj xeeb tshaj yog rau cov khoom siab gloss, qhov pib ploj ntawm lub teeb yuav sai heev.
Thaum cov duab ci ci tau raug txo kom txog 20, nws yuav kav ntev. Qhov tshwm sim no yuav tshwm sim hauv ob peb lub hlis ntawm kev siv. Yog li ntawd, cov xim coated panels rau cov tsev sab nraum zoov feem ntau tsis tshua muaj teeb.
Raws li daim ntawv tshaj tawm thiab cov txheeb xyuas kev txheeb xyuas qhov tseeb, cov txheej txheej tom ntej ntawm 20 μm lossis ntau dua tuaj yeem tiv thaiv kev nkag mus ntawm corrosive tshaj tawm.
PVDF cov khoom yuav tsum muaj cov tuab tuab xim ua cov yeeb yaj kiab. Qhov yuav tsum ua rau cov txheej xim sab nraud yog nyob ntawm daim ntawv thov. Sandwich vaj huam sib luag yuav tsum tau tsuas yog ib txheej ntawm bondable primer.
Profiled steel ntawv kuj tseem yuav tsum tau coated nrog ob txheej vim yog qhov chaw nyob sab hauv tsev thiab muaj cov tuab tsawg tsawg ntawm 10 μm.
