Kev tsim cov galvanized steel coils feem ntau suav nrog ob txheej txheem: kub-dip galvanizing thiab electro-galvanizing. Kub-dip galvanizing entails immersing lub steel kauj nyob rau hauv ib da dej ntawm molten zinc los ua ib tug kuj tuab zinc txheej, whereas electro-galvanizing deposits ib zinc txheej rau saum npoo ntawm electrolysis, uas ua rau ib tug nyias nyias, tab sis ntau txheej txheej. Txhua tus txheej txheem muaj cov yam ntxwv sib txawv thiab haum rau cov kev siv sib txawv.
1. Kub-dip galvanizing txheej txheem (txoj kev tseem ceeb)
Galvanized coils feem ntau yog tsim los ntawm kub -dip galvanizing txheej txheem. Qhov no yog immersing nyias steel los xij rau hauv da dej ntawm molten zinc kom cov zinc txheej adheres rau saum npoo; cov txheej txheem galvanizing tas mus li- qhov twg cov hlau coiled txuas ntxiv dhau los ntawm zinc da dej- tam sim no yog txoj hauv kev tseem ceeb.
2. Galvannealing txheej txheem
Lwm txoj kev yog cov txheej txheem galvannealing, uas cov hlau tau rhuab mus rau kwv yees li 500℃tam sim ntawd tom qab tawm ntawm zinc da dej los ua zinc- hlau alloy txheej. Galvanized coils tsim los ntawm txoj kev no muab cov xim zoo nkauj adhesion thiab weldability.
3. Electro- txheej txheem galvanizing
Electro-galvanizing kuj tseem siv los tsim cov galvanized coils; Txawm li cas los xij, cov txheej txheej tshwm sim yog thinner, thiab nws cov kev tiv thaiv corrosion tsis zoo rau cov txheej txheem kub -dip.
4. Txoj kev kho deg
Raws li kev kho saum npoo, cov txheej txheem ntau lawm tuaj yeem muab faib ua ntau hom xws li passivation, oiling, thiab lacquer sealing. Qhov tseem ceeb, kev kho mob passivation ua tau zoo txo qis kev tsim xeb (tshwj xeeb yog "dawb xeb") thaum khaws cia thiab thauj hauv av ntub.
