Prepainted galvanized steel kaujyog ib hom xim coated steel kauj (PPGI coil). Nws siv galvanized steel raws li lub hauv paus hlau. Zinc txheej muaj zog corrosion kuj. Ntxiv nrog rau kev pleev xim, nws yog qhov ruaj khov dua li cov hlau galvanized.Cov hlau coated steel ces ntsib qee cov txheej txheem tu, kev kho ua ntej thiab thaum kawg tau txais ntau txheej txheej ntawm cov organic coatings, nrog rau cov laminates, yas dispersions, thiab xim. Cov txheej txheem txuas ntxiv no ntawm kev siv cov txheej txheem sib txawv yog hu ua coil txheej. Yog li ntawd, steel coil tsis xav tau kev pleev xim lossis ua tiav thaum ua haujlwm hauv cov khoom tiav.
Pib nrog, lawv siv cov substrates sib txawv. PPGI siv cov ntawv galvanized ua cov hlau hauv paus. Lawv muaj cov zinc txheej thoob plaws los tiv thaiv kev ya raws, xeb, thiab xeb los ntawm kev rhuav tshem cov hlau saum npoo. Lub substrate cuam tshuam rau lawv daim ntawv thov uas ntxiv qhov sib txawv ntawm 2 hom hlau.
Lub neej kev pab cuam ntawm ob hom hlau no kuj txawv vim cov substrates. Cov substrates prolong lub steels kev pab cuam lub neej los ntawm kev tiv thaiv lawv los ntawm xeb thiab corrosion. Zinc yog qhov zoo tshaj plaws substrate rau kev tiv thaiv hlau los ntawm xeb. PPGI muaj ze li ntawm 99% zinc hauv nws cov substrate, tab sis PPGL tsuas muaj 43.3%. Qhov no muab PPGI lub neej ua haujlwm ntev dua piv nrog PPGL. Txawm hais tias aluminium thiab silicone yog cov alloys zoo, lawv tsis yog qhov zoo tshaj plaws ntawm kev tiv thaiv hlau los ntawm corrosion los yog xeb. Lawv thaum kawg hnav nrog lub sijhawm, yog li nthuav tawm cov hlau kom ya raws uas ua rau corrosion.
