Zopangira zopangira zomwe zimagwiritsidwa ntchito kwambiri pamtunda ndizomakutidwe ndi okosijeni, electrophoresis, electroplating, Dacromet magulu anayi, zotsatirazi makamaka wononga ndimtundu za chithandizo chapamwamba chachidule chamagulu.
- Wakuda oxide:
Agawika m'chipinda chakuda chakuda ndi kutentha kwambiri kutentha, kutentha kwa chipinda mdima monga chitsanzo cha ndondomekoyi ndi: kupukuta kwa mankhwala - kutsuka madzi otentha - kutsuka madzi ozizira - kuchotsa dzimbiri ndi kutsekemera kwa asidi - kuyeretsa - mdima - kuyeretsa - Kutentha kwa mafuta kapena kutsekedwa. Ndi filimu ya oxide yomwe imapangidwa ndi sodium hydroxide ndi sodium nitrite pa kutentha kwakukulu kuposa madigiri 100.
Chigawo chachikulu cha filimu okusayidi ndi chitsulo tetraoxide (Fe3C4), filimu kufanana ndi 0.6-1.5um yekha, dzimbiri kukana ndi osauka, mu nkhani ya osati pa mafuta kapena kutsekedwa ndale mchere utsi okha 1-2 maola kapena kuposa, pa mafuta mu maola 3-4 kapena kuposa. Zida zazing'ono sizigwiritsa ntchito njirayi panthawiyi. Amasiyanitsidwa ndi maonekedwe a mtundu, okusayidi wakuda ndi zinki wakuda ndi electrophoretic wakuda pafupi, koma osati owala ngati zinki wakuda ndi electrophoretic mtundu wakuda.
- Galvanize:
Black electroplating ali ndi mitundu iwiri ya nthaka yakuda ndi faifi tambala wakuda, mfundo ya ndondomeko ndi chimodzimodzi, kokha chiphunzitso cha electroplating njira ndi pambuyo mankhwala ndi latisi osiyana kapena passivation njira. Zinc ndi mankhwala yogwira, zosavuta oxidide ndi mdima mu mlengalenga, ndipo potsiriza kutulutsa dzimbiri 'woyera' dzimbiri, nthaka plating pambuyo chromate mankhwala kuti kuphimba wosanjikiza nthaka pa mankhwala kutembenuka filimu, kuti yogwira zitsulo ali kungokhala chete boma, ndi passivation wa nthaka wosanjikiza. Kanema wa Passivation kuchokera pamawonekedwe atha kugawidwa kukhala zoyera (zinki zoyera), buluu (buluu zinki), passivation yakuda (zinki wakuda), passivation yankhondo yobiriwira (zinki wobiriwira) ndi zina zotero.
- Electrophoresis Black:
Kutengera njira ya electrochemical kuyika tinthu tating'onoting'ono ta utomoni wa organic pazigawo kuti apange organic ❖ kuyanika wosanjikiza wamitundu yosiyanasiyana, electrophoresis wakuda amagwiritsidwa ntchito kwambiri pamakampani, tengani njira yakuda monga chitsanzo: degreasing-cleaning-phosphating-electrophoresis penti-drying. Akhoza kugawidwa mu anodic electrophoresis (utomoni ionisation mu ayoni zoipa) ndi cathodic electrophoresis (utomoni electrophoresis mu ayoni zabwino), ndi utoto ndondomeko poyerekeza ndi ntchito yomanga ndi zabwino, kuipitsa ndi kuvulaza chilengedwe kuchepetsa kukana kwake kusalowerera ndale mchere kutsitsi ntchito mu maola 300 kapena kuposa, mtengo ndi kukana dzimbiri ndi ndondomeko Dacromet ndi ofanana.
- Zinc woyera:
Electroplating process ndi: degreasing - kuyeretsa - activation yofooka ya asidi - electroplating zinki - kuyeretsa - tsitsi loyera - kuyeretsa - kuyanika, ndi kusiyana kwa zinki wakuda kulibe Kusiyanasiyana kwa rack ndi passivation yankho, passivation yoyera ndi filimu yopanda utoto yowonekera ya zinc okusayidi, pafupifupi palibe chromium, kotero kukana kwa dzimbiri kumagwirizana ndi mtundu wa zinki wakuda, zinc wakuda, zinki. Maola 6-12, pali wopanga plating uyu powongolera kulondola kwa chiŵerengero cha yankho la passivation atha kuchitidwa pokana kupopera kwa mchere wosalowerera ndale kwa maola pafupifupi 20.
Chifukwa choyera zinki plating mtundu pamwamba mankhwala zomangira kuchita ndale mchere kutsitsi mayeso poyamba anaonekera padziko plating dzimbiri zoyera, wofiira dzimbiri chodabwitsa ndi pafupifupi 40 hours, kotero woyera nthaka dzimbiri kukana ndi bwino kuposa faifi tambala woyera. Maonekedwe ndi faifi tambala yoyera poyerekeza ndi mdima, nthaka yoyera ya mtundu woyambirira wa zinki wobiriwira-woyera, ndi faifi yoyera poyerekeza ndi kusiyana kwakukulu.
- White Nickel:
platting ndondomeko ndi: degreasing - kuyeretsa - ofooka asidi kutsegula - kuyeretsa - mkuwa pansi - kutsegula - kuyeretsa - electroplating faifi tambala - Kuyeretsa - passivation - kuyeretsa - kuyanika - kapena kutsekedwa, ndi ndondomeko wakuda faifi tambala ndi chimodzimodzi, makamaka plating njira chilinganizo ndi osiyana, zochepa zinki sulfide ndi join. Kukana kwake kwa dzimbiri ndi nickel wakuda sikuli kusiyana kwakukulu kwa maola 6-12, ndondomeko ya opanga ambiri idzakhalanso pa mafuta kapena kutsekedwa, monga kulingalira za kukhudzidwa kwa dzimbiri pazigawo za pulasitiki za zinthu zomwe zikubwera ziyenera kugwiritsidwa ntchito ngati cholinga choyang'anira kaya ndi mafuta kapena ayi.
- Blue zinc, green zinc:
Njirayi ndi yofanana ndi nthaka yoyera, zinki ya buluu imadutsa filimu ya zinc oxide ili ndi 0.5-0.6mg/dm2 ya trivalent chromium. Green passivation, yomwe imadziwikanso kuti 5-acid passivation, imatha kupeza filimu yobiriwira ya udzu wobiriwira, yankho la passivation lili ndi ayoni a phosphate, filimu yonyezimira ya udzu wobiriwira ndi filimu yovuta, yodzitchinjiriza yoteteza ma chromates ndi phosphates.
Chifukwa chosachita dzimbiri, zinki ya buluu ndi yabwino kuposa zinki yoyera, pomwe zinki wobiriwira ndi wabwino kuposa zinki wabuluu. Mtundu wa buluu nthaka ndi pang'ono buluu ndi nthaka woyera ndi pafupi ndi mafakitale ntchito kwambiri, yotsirizira Angagwiritsidwenso ntchito ngati kapangidwe mankhwala pamene njira njira zomangira.
- Enameled zinc (chemistry):
Mu galvanizing gulu la ndondomeko akuda nthaka ndi zabwino dzimbiri kukana, ake achikuda passivation ndondomeko ndi: galvanizing - kuyeretsa - 2% - 3% asidi nitric kunja kuwala - kuyeretsa - otsika chromium wachikuda passivation - kuyeretsa -Kuphika kukalamba. Passivation kutentha ndi otsika kwambiri, filimu ndi wodekha, wotumbululuka filimu woonda. Kutentha kwakukulu, filimuyi ndi yokhuthala komanso yotayirira, osati yomangirizidwa. Ndi bwino kulamulira pafupifupi madigiri 25 kuonetsetsa kuti mtundu womwewo umapezeka mkati mwa nthawi inayake.
Pambuyo pa passivation, iyenera kuphikidwa ndikukalamba kuti ikhale yolimba komanso yolimba ya filimuyo. Zomangira zamtundu wa zinki pokhudza pansi pakukana kutsitsi kwa mchere wosalowerera ndale mu maola opitilira 48, kuwongolera bwino kumatha kupitilira maola 100.
- Dacromet:
Ndilo chidule ndi kumasulira kwa DACROMET, mwachitsanzo, flaky zinc-based chromium salt protective coating, yomwe imatchedwanso zinc-aluminium coating. Njira yayikulu ndi: kutsitsa - kutsitsa - kuyanika - kutenthetsa - kuzizira - kuziziritsa. Njirayi nthawi zambiri imakhala ndi nthawi 2-4 kuchokera pakuyakira mpaka kuzirala, chifukwa zomangira zokhala ndi zokutira monga kuti zitheke makulidwe ena ziyenera kuchitika nthawi zambiri.
Kapangidwe pamwamba zitsulo, TACHIMATA ndi wosanjikiza wa njira Dacromet (ie, munali mamba nthaka, zotayidwa [mamba ambiri kukula 0.1-0.2X10-15 microns] Cr03 ndi organic nkhani yapadera kwambiri dispersible wosanganiza amadzimadzi njira), ndi 300 ° C kapena kutentha kuteteza kuphika nthawi ina yafupikitsa inchrovalent madzi inchrovalent inchrovalent nthawi. chromium, zomwe zimapangitsa kuti amorphous composite chromate compounds (nCr03) mCr203).
Kukana dzimbiri ndi zabwino kwambiri ndale mchere mpaka maola 300 kapena kuposa, kuipa kwa ❖ kuyanika si yunifolomu, woonda malo 5-10um, wandiweyani udindo wa 40um kapena choncho, zingakhudze kuya kwa wononga m'mimba mwake, kotero makina pogogoda zomangira ndi zomangira ndi m'mimba mwake yaing'ono ya zomangira ndi zabwino kwambiri kuti ntchito Dacromet ndondomeko monga mankhwala pamwamba.
Nthawi yotumiza: Sep-18-2024
