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