Tom qab muab tshem tawm los ntawm cov tshuaj pickling, cov kav hlau yuav tsum tau yaug nrog dej tam sim ntawd kom tsis txhob muaj teeb meem hauv qab no:
(1) Nws tiv thaiv cov kua qaub uas tseem tshuav ntawm cov kav dej steel los ntawm kev txuas ntxiv mus rau qhov chaw substrate.
(2) Nws tiv thaiv hlau ntsev adhering rau saum npoo ntawm cov yeeb nkab steel los ntawm oxidized los ntawm oxygen nyob rau hauv cov huab cua, transforming ferrous ntsev (divalent hlau) rau hauv hlau ntsev (trivalent hlau) uas nyuaj rau tshem tawm, piv txwv li, transforming ferrous sulfate rau hauv. ferric sulfate.
(3) Nws txo qhov tsim ntawm zinc slag.
(4) Nws pab txhim kho qhov zoo ntawm cov galvanized txheej ntawm cov kav dej galvanized, txo lossis tshem tawm cov xwm txheej xws li ploj galvanization.
