Cov ntsiab lus zinc ntawm plating da dej hauv qhov kub-dipgalvanized ntawvzinc lauj kaub tsis tsawg dua 99%, uas yog hom kev lag luam ntau dua ntawm kev tiv thaiv corrosion nyob rau theem no. Ntshiab zinc-coated tuab steel daim hlau muab faib ua ob hom: non-zinc paj thiab zinc paj. Lawv qhov kev tiv thaiv corrosion yog qhov tseem ceeb tib yam. Yog tias cov tshuaj tsuag pleev xim lossis pleev xim rau tom qab, cov khoom tsis muaj zinc paj yuav zoo nkauj dua; thaum cov khoom nrog tuab zinc txheej feem ntau yog cov paj (piv txwv li, qhov hnyav ntawm zinc txheej ntawm ob sab yog 273g / m2).
Aluminium zinc txheej
Cov tshuaj plating muaj li 55% txhuas, txog 1.6% silicon, thiab cov khoom seem yog zinc. Kev tiv thaiv corrosion ntawm aluminium-zinc txheej yog siab dua li ntawm cov zinc txheej ntshiab hauv ntau qhov chaw. Txhua aluminium-zinc coated coil steel yog Muaj zinc paj. Cov mills hlau zoo heev tuaj yeem tsim cov paj zoo nkauj thiab zoo nkauj zinc paj, thiab cov khoom siv hluav taws xob tuaj yeem siv ncaj qha, tab sis cov txheej aluminium-zinc kuj muaj qee qhov tsis xws luag. Kev ua haujlwm vuam ntawm aluminium-zinc coated steel daim hlau tsis zoo li cov zinc ntshiab, tshwj xeeb tshaj yog thaum siv cov welder tsis kam, molten txheej hlau yuav lo rau saum cov electrode. Txij li thaum lub zog ntawm cov khoom siv hlau yuav tsum tau sib koom ua ke tom qab melting yog qhov siab, kev siv cov cuab yeej zoo tib yam kom tshem tawm cov hlau tsis muaj txiaj ntsig thiab yuav ua rau lub taub hau qib yuav raug them.
Yog li ntawd, txoj kev vuam yuav tsum zam kom ntau li ntau tau thaum siv. Tsis tas li ntawd, kev tiv thaiv kev tiv thaiv ntawm aluminium-zinc txheej ntawm steel phaj tawg yog nyob deb inferior rau cov ntshiab zinc txheej (thiab deb inferior rau zinc-aluminium-magnesium txheej). Nws yog ib qho tsim nyog los ua txoj haujlwm zoo hauv kev tiv thaiv corrosion ntawm qhov qhib tawg (xws li Xim kaw).
