Tom qab pickling, ntxuav, thiab xaiv immersion nyob rau hauv ib tug dilute hydrochloric acid tov, steel kav yuav tsum tau coated nrog ib tug txheej ntawm concentrated hydrochloric acid, zinc chloride aqueous tov, ammonium chloride aqueous tov, los yog ib tug complex ntsev aqueous tov ntawm zinc chloride thiab ammonium chloride. ua ntej kub-dip galvanizing, tom qab ziab. Xwb, cov ntsev complex ntawm zinc chloride thiab ammonium chloride tuaj yeem muab tso ncaj qha rau hauv ib lub thawv tshwj xeeb rau ntawm qhov chaw ntawm zinc molten, kom cov kav hlau yuav tsum tau galvanized dhau los ntawm molten complex ntsev txheej ua ntej nkag mus rau zinc kua. Cov txheej txheem ntawm kev tsim cov kav dej galvanized steel siv ob txoj kev siv cov kuab tshuaj no hu ua cov txheej txheem hnyav. Cov qub hu ua "dry solvent method" los yog yooj yim "dry method," thaum lub sij hawm tom kawg yog hu ua "wt flux method" los yog "wet method."
Lub hom phiaj ntawm kev siv cov kuab tshuaj yog los xyuas kom meej tias thaum lub steel yeeb nkab yog immersed nyob rau hauv kub zinc kua rau galvanizing, cov hlau matrix nyob rau saum npoo ntawm cov yeeb nkab steel tuaj yeem hnov mob ib txwm nrog cov zinc kua nyob rau hauv ib lub sij hawm luv luv los ua kom tiav. hlau-zinc alloy txheej. Nyob rau hauv "txoj kev qhuav," cov kuab tshuaj zaj duab xis nyob rau saum npoo ntawm cov yeeb nkab steel kuj tuaj yeem tiv thaiv cov hlau matrix ntawm cov yeeb nkab steel los ntawm kev oxidized.
