Electrogalvanizing (tseem hu ua txias galvanizing) yog cov txheej txheem feem ntau siv rau kev lag luam fasteners, thiab nws kuj yog feem ntau siv hauv cov khoom siv bracket. Feem ntau, cov txheej txheem electro-galvanizing kuj pheej yig thiab muaj cov tsos zoo, tab sis nws qhov tsis zoo kuj tseem pom tseeb.
1 Txoj cai ntawm electro-galvanizing
Vim tias zinc tsis yooj yim rau kev hloov pauv hauv huab cua qhuav, thiab hauv huab cua ntub, zinc carbonate zaj duab xis tuab heev tuaj yeem tsim rau ntawm qhov chaw, uas tuaj yeem tiv thaiv sab hauv los ntawm corrosion. Thiab thaum cov txheej txheej puas vim qee yam thiab cov matrix uas tsis loj dhau raug nthuav tawm, zinc thiab steel matrix tsim lub micro-roj teeb, kom lub fastener matrix dhau los ua cathode thiab tiv thaiv.
2 Electro-galvanized kev ua tau zoo
1) Cov zinc txheej yog tuab, cov muaju yog zoo, tsis muaj qhov pores, thiab corrosion kuj zoo;
2) Cov zinc txheej tau los ntawm electroplating yog cov ntshiab, thiab corrodes maj mam nyob rau hauv cov huab cua xws li acid thiab alkali, uas yuav zoo tiv thaiv cov hlau substrate;
3) zinc txheej yog passivated los ntawm chromic acid los ua dawb, xim, tub rog ntsuab, thiab lwm yam, uas yog zoo nkauj thiab muaj tej yam zoo nkauj;
4) Vim qhov zoo ductility ntawm zinc txheej, ntau txoj kev xws li txias punching, dov thiab dabtsi yog khoov tuaj yeem nqa tawm yam tsis muaj kev puas tsuaj rau txheej.
3.Electro-galvanized kev faib tawm
Raws li kev faib tawm ntawm cov kev daws teeb meem electroplating hauv Suav teb, nws tuaj yeem muab faib ua plaub pawg:
Cyanide Zinc
Vim tias (CN) muaj tshuaj lom heev, kev tiv thaiv ib puag ncig tau muab tso rau hauv kev txwv nruj rau kev siv cyanide hauv electro-galvanizing, thiab niaj hnub txhawb kev txhim kho ntawm cyanide-txo thiab hloov cyanide electro-galvanizing da dej systems, yuav tsum tau siv tsawg-cyanide. (micro-cyanide) electroplating da dej.
Tom qab electroplating los ntawm cov txheej txheem no, cov khoom zoo yog qhov zoo, tshwj xeeb tshaj yog cov xim plating, thiab cov xim tseem zoo tom qab passivation.
Zinc galvanized
Cov txheej txheem no tau hloov zuj zus los ntawm cyanide zinc plating. Muaj ob pawg loj hauv Suav teb, uas yog: a) "DPE" series ntawm Wuhan Material Insurance Institute; b) "DE" series ntawm xov tooj cua thiab TV lub koom haum. Ob leeg yog zincate zinc plating nrog alkaline additives, thiab pH tus nqi yog 12.5 ~ 13.
Siv cov txheej txheem no, cov txheej txheem lattice ntawm txheej yog columnar, thiab corrosion kuj zoo, uas yog haum rau xim galvanizing.
Note: After the product is out of the tank—>; water washing—>; light output (nitric acid + hydrochloric acid)—>; water washing—>; passivation—>; water washing—>; water washing—>; blanching—>; drying—>; Kev laus kev kho mob (80 ~ 90 degree hauv qhov cub.
Chloride Zinc
Cov txheej txheem no tau siv dav hauv kev lag luam electroplating, suav txog li 40 feem pua.
Tom qab passivation (xiav dawb), chrome tuaj yeem hloov tau los ntawm zinc (piv rau chrome plating), tshwj xeeb tshaj yog tom qab ntxiv dej-soluble kua roj vanish, nws yog ib qho nyuaj rau ib tug layman kom paub qhov txawv seb nws yog galvanized los yog chrome plated.
Cov txheej txheem no tsim nyog rau kev ua haujlwm dawb (xiav dawb, nyiaj dawb).
Sulfate Zinc
Cov txheej txheem no yog tsim rau kev plating tas mus li (xaim, strips, yooj yim, tuab thiab loj qhov chaw thiab cov khoom), thiab tus nqi qis.
