Vim li cas cov dej ntws hauv thiab sab nraud ntawm cov kav dej txias galvanized yuav tso cai kom ntws ntau li ntau tau?

Vim tias tom qab tshem cov galvanized steel yeeb nkab los ntawm cov dej txias, nws tseem xav tau kev kho mob passivation. Yog tias cov dej txias txuas nrog rau sab hauv thiab sab nrauv ntawm cov yeeb nkab steel galvanized tsis tau ntws tawm, cov dej noo ntau yuav raug nqa mus rau hauv cov tshuaj passivating, yog li diluting nws cov concentration. Thaum cov concentration poob qis dua qhov teev hauv cov txheej txheem, cov nyhuv passivation yuav raug txo. Yog li ntawd, ua ntej lub galvanized steel yeeb nkab nkag mus rau hauv lub passivation tank, cov ya raws nyob rau hauv thiab nyob rau saum npoo ntawm cov yeeb nkab yuav tsum tau muab tshem tawm.