Niaj hnub no, cov kav dej kub-dip galvanized steel kav yog ib hom kev tiv thaiv hluav taws kub, ua si lub luag haujlwm tsis tuaj yeem hloov pauv hauv kev lag luam hluav taws kub. Vim li cas ho tsis tuaj yeem hloov cov kav dej kub-dip galvanized los ntawm cov kav hlau uas pheej yig dua lossis cov kav dej txias-galvanized?
Kub-dip galvanizing tau tsim nyob rau hauv nruab nrab-18 xyoo pua, hloov zuj zus los ntawm cov txheej txheem kub-dip tinning, nrog keeb kwm ntawm ntau tshaj 300 xyoo. Txog niaj hnub no, kub-dip galvanizing tseem yog ib qho kev siv dav thiab siv tau zoo ntawm cov txheej txheem tiv thaiv corrosion steel.
Lub hauv paus ntsiab lus ntawm galvanized steel tiv thaiv nyob rau hauv: dhau li ntawm kev tsim ib txheej txheej uas cais cov yeeb nkab steel los ntawm corrosion los ntawm huab cua thiab noo noo, nws kuj leverages lub fact tias hlau muaj ib tug ntau dua electronegativity tshaj zinc. Los ntawm kev nyiam oxidizing txheej zinc, nws txi cov zinc txheej los tiv thaiv cov hlau sab hauv. Yog li ntawd, qhov corrosion kuj ntawm cov kav dej zoo tib yam welded tsis tuaj yeem sib piv. Txawm tias cov hlau uas tau dhau los tiv thaiv kev tiv thaiv corrosion xws li roj thiab pleev xim tsis tuaj yeem phim cov corrosion kuj ntawm kub-dip galvanized kav.
Cov zinc txheej ntawm cov kav dej kub-dip galvanized yog lub plhaub uas npog lub npoo ntawm cov yeeb nkab steel tom qab immersion, hos cov kav dej txias-galvanized muaj ib txheej ntawm zaj duab xis tsim los ntawm cov tshuaj tiv thaiv electrolytic. Yog li ntawd, lub thickness ntawm zinc txheej ntawm kub-dip galvanized steel kav yog ho ntau dua li ntawm txias-galvanized kav. Raws li lub hauv paus ntsiab lus ntawm kev tiv thaiv galvanized steel, peb nkag siab tias cov zinc txheej tuab nrog ntau zinc muab kev tiv thaiv zoo dua rau cov hlau. Yog li ntawd, cov kav dej kub-dip galvanized steel kav nrog cov zinc coatings thicker muaj kev tiv thaiv corrosion uas yog kaum ob npaug ntau dua li cov kav dej txias-galvanized.
Vim tib lub laj thawj, txheej txheej ntawm cov kav dej kub-dip galvanized yog ntom, thiab cov adhesion ntawm zinc txheej yog zoo dua li cov kav dej txias-galvanized. High adhesion txhais tau hais tias cov zinc txheej tsis tshua muaj kev puas tsuaj vim muaj kev cuam tshuam thiab kev sib txhuam thaum thauj.
Kub-dip galvanized steel kav yog immersed nyob rau hauv ib tug galvanizing da dej thaum lub sij hawm tsim khoom, xyuas kom meej tias tag nrho cov raug sab hauv thiab sab nrauv yog coated nrog zinc. Hauv qhov sib piv, cov kav dej txias-galvanized steel feem ntau yog ua los ntawm dov thiab vuam ib daim ntawm pre-galvanized steel phaj. Yog li ntawd, cov vuam seams ntawm cov kav dej no tsis muaj kev tiv thaiv ntawm zinc txheej.
Yog li ntawd, txhawm rau kom muaj kev nyab xeeb thiab ruaj khov dua cov kav hluav taws xob tiv thaiv, cov kav dej kub-dip galvanized steel kav yog qhov kev xaiv zoo tshaj.
