Ipleyiti yentsimbi egqunywe ngombala ikwabizwa ngokuba yi-organic ipleyiti yentsimbi eqatyweokanye ipleyiti yentsimbi efakwe ngaphambili. Njengendlela yokuvelisa eqhubekayo yeekhoyili, iipleyiti zensimbi ezinombala zingahlulwa zibe ziindlela ezimbini: i-electro-galvanized kunye ne-hot-dip galvanized.
Ngelo xesha, i-electro-galvanizing yindlela yokwenza ipeyinti efakwe ngegolide- "i-layer zinc metal okanye i-zinc alloy" ngokusebenzisa i-electroplating.
I-Hot-dip galvanizing, ekwabizwa ngokuba yi-hot-dip galvanizing, kukuntywilisela iimveliso zetsimbi ezifuna ukulungiswa kwisinyithi esinyibilikisiweyo se-zinc ukwenza inkangeleko yokwaleka kwesinyithi solondolozo. Xa kuthelekiswa ne-electroplating, i-metal hot-dip coating iyajiya; phantsi kwendawo enye, inobomi obude.
I-corrosion ye-hot-dip galvanized layer kwi-steel surface ilingana ne-zinc ecocekileyo. Ukutshatyalaliswa kwe-zinc kwi-atmospheric kufana nenkqubo ye-corrosion yensimbi phantsi kweemeko ze-atmospheric. I-Chemical oxidation corrosion iyenzeka, i-electrochemical corrosion iyenzeka kumphezulu we-zinc, kwaye ifilimu yamanzi i-condensation. Kwimeko engathathi hlangothi okanye ebuthathaka, imveliso ye-corrosion eyenziwe yi-galvanized steel layer i-insoluble compounds (i-zinc hydroxide, i-zinc oxide, kunye ne-zinc carbonate). Ezi mveliso ziya kwahlulwa ngokubekwa kwaye zenze umaleko ocolekileyo.
Ngokubanzi inokufikelela kubukhulu obuyi-8μm”. Olu hlobo lwefilimu lunobunzima obuthile, kodwa alunakunyibilika nje emanzini, kwaye lunamathelo aqinileyo. Ngoko ke, inokudlala umqobo phakathi kwe-atmospheric kunye neshiti le-galvanized. Thintela umhlwa ngakumbi. Uluhlu lwe-galvanized lonakaliswe ngexesha lokugcinwa, kwaye inxalenye yendawo yensimbi ibonakaliswe emoyeni.
Ngeli xesha, i-zinc kunye nentsimbi zenza ibhetri encinci. Ubunakho be-zinc busezantsi kakhulu kunentsimbi. Njenge-anode, i-zinc inefuthe elikhethekileyo lokugcina i-anode kwi-substrate yeplate yensimbi ukuphepha ukubola kweplate yensimbi.
Ibhodi efakwe ngombala luhlobo oluthile lolwelo, olusetyenziselwa ukucoca ubuso besinyithi ngebrashi okanye i-roller. Emva kokufudumeza kunye nokunyanga, ifilimu yepeyinti enobunzima obufanayo inokufumaneka.
Ixesha lokuposa: Nov-02-2021