Galvanized coils yog cov khoom siv hlau ua los ntawm txias- dov steel substrates uas tau coated nrog zinc txheej tiv thaiv los ntawm kub-dip galvanizing lossis electro-galvanizing. Cov yam ntxwv los ntawm corrosion kuj, yooj yim ntawm kev ua, thiab ib puag ncig tus phooj ywg, lawv tau dav siv nyob rau hauv sectors xws li automotive manufacturing, hluav taws xob khoom, hlau fabrication, thiab mechanical machining. Lawv cov txiaj ntsig tseem ceeb nyob hauv zinc txheej lub peev xwm los cais cov substrate los ntawm ib puag ncig sab nraud, yog li txuas ntxiv cov khoom siv lub neej thiab txo cov nqi tu hauv kev tsim khoom.
Cov txheej txheem tiv thaiv ntawm galvanized coils nyob ntawm cov khoom siv hluav taws xob ntawm zinc. Raws li zinc yog ntau reactive dua hlau, nws nyiam dua oxidation nyob rau hauv ib puag ncig ntub, tsim ib txheej tiv thaiv ntom ntom ntawm zinc oxide uas tiv thaiv corrosion los ntawm kev sib kis mus rau lub substrate. Nyob ntawm cov txheej txheem tsim khoom, lawv tau faib ua ob hom: kub-dip galvanized thiab electro-galvanized. Kub-dip galvanizing cuam tshuam nrog rau hauv molten zinc ntawm qhov kub thiab txias, ua rau cov zinc txheej tuab (feem ntau ntau dua lossis sib npaug li 20 μm) tsim nyog rau qhov chaw sab nraum zoov heev. Electro-galvanizing cuam tshuam nrog electrolytic deposition ntawm zinc, ua ib txheej nyias (3-15 μm) nrog ib tug smoother nto tiav, ua rau nws zoo tagnrho rau precision machining daim ntaub ntawv. Tsis tas li ntawd, qee cov khoom lag luam muaj kev tiv thaiv - txheej ntiv tes; tsim los ntawm kev sib xyaw ua ke ntawm cov organic resin thiab silane, txheej txheej no tsim cov qauv microporous uas tiv thaiv cov ntiv tes residue thaum txhim kho txheej adhesion.
