Thaum cov yeeb nkab steel coated nrog cov kuab tshuaj-dej thiab tom qab ntawd qhuav, yog tias lawv tsis tau rhuab mus rau qhov xav tau kom qhuav kub rau kub-dip galvanizing thiab muaj cov dej noo ntau dhau, lawv suav hais tias tsis yog kom qhuav. Qhov tshwm sim ntawm kev ziab tsis txaus tuaj yeem ua rau muaj teeb meem hauv qab no:
(1) Nws tsis ua kom txaus tshem tawm cov roj hydrogen tsim tawm thaum lub sijhawm khaws cov txheej txheem hauv cov yeeb nkab steel hlau substrate, cuam tshuam qhov zoo ntawm cov txheej txheem galvanized.
(2) Nws ua rau tsis tsim nyog corrosion ntawm cov yeeb nkab steel hlau substrate, tsim cov hlau chloride, uas ua rau cov zinc noj thiab ua rau ib txheej ntxhib galvanized.
(3) Cov khoom siv txhuas hauv zinc da dej tau dhau los ua cov oxidation hnyav vim cov dej noo, ua kom muaj qhov tseem ceeb ntawm txhuas oxide (Al₂O₃), uas tsis yog tsuas yog khib nyiab aluminium xwb tab sis kuj ua rau hnyav hnyav.
(4) Thaum noo noo ntsib cov kua zinc kub, nws hloov mus rau hauv dej vapor, hydrogen, thiab oxygen sai, ua rau cov kua zinc hauv cov yeeb nkab steel eject hnyav los ntawm qhov raug, ua rau muaj kev phom sij, nkim zinc, thiab ua rau cov khoom tsis zoo galvanizing. .
(5) Cov dej vapor uas tsim tawm thaum ya raws ntsib zinc kua tuaj yeem ua rau oxidize zinc ntawm 350 degree. Muab hais tias cov kua zinc nws tus kheej ua haujlwm nyob rau hauv qhov kub ntawm 470-500 degree, oxidation yuav hnyav dua, ua rau muaj zinc noj ntau dua thiab cov txheej txheem tsis zoo galvanized.
