Galvanized steel xa rau raws li "galvanized welded steel kav ntawm zinc txheej ntawm cov kais dej ib puag ncig. Txhawm rau tshawb xyuas qhov corrosion mechanism, nws yog thawj zaug tsim nyog kom nkag siab cov muaj pes tsawg leeg ntawm cov kais dej. Feem ntau, 1 liter ntawm kais dej muaj 10 mg ntawm yaj oxygen, uas reacts nrog zinc hydroxide uas muaj raws li cov khoom corrosion. Cov dej muag muag, muaj cov pa oxygen, carbon dioxide, thiab sodium ntsev (dej socthing), nrawm zinc corrosion. Hloov siab, cov dej khov muaj cov txhuas hydroxide, phasocates, thiab cov tshuaj tiv thaiv calcium, uas ua rau cov roj ntsha uas zoo dua rau cov dej nyuaj piv rau dej.
Cov Ph ntawm cov kais dej feem ntau muaj nyob ntawm 7.5 txog 9.5. Thaum calcium bicarbonate, sulfides, chlorides, thiab cov nitrides tseem ceeb tseem ceeb thiab muaj kev tiv thaiv vim yog tsim ntawm insolule carbonate txheej.
Chlorine ntxiv rau kev siv tshuaj tua kab mob ua kom muaj kev pheej hmoo ua rau muaj kev pheej hmoo rau Zinc Txheej Txheem. Thaum lub zinc txheej muaj ntau dua {{{{0}}}}}. 28%}. 28%}. 28%}. 28%}. 28%}. 28%} Yog li ntawd, tin yuav tsum tsis txhob txhob txwm txuas ntxiv rau Galvanized txheej ntawm cov kav hlau hlau npaj rau kev siv dej daim ntawv thov. Feem ntau, tin-free zinc co co co nqaij pleev ib ncig ntawm 0.66 mg \/ dm \/ dhuav cov khaub noom ntau zaus 2.03 mg \/ dmol · hnub nyob rau hauv tib qho xwm txheej.
