Njira yopangira mankhwala opangira utsi
Kukonzekera koyambira kumaphatikizapo kupukuta (kuchotsa mafuta), kuchotsa dzimbiri, kupukuta magawo atatu.Phosphating ndi ulalo chapakati, degreasing ndi dzimbiri kuchotsa ndi kukonzekera ndondomeko pamaso phosphating, kotero kupanga mchitidwe, sitiyenera kutenga phosphating ntchito monga cholinga, komanso kuyambira zofunika phosphating khalidwe, kuchita ntchito yabwino kuwonjezera pa. mafuta ndi dzimbiri kuchotsa, makamaka kulabadira kukopana pakati pawo.
Kuchepetsa kutentha
Ndi chitukuko cha mafakitale, kutetezedwa kwa chilengedwe ndi kusintha kwa malo ogwira ntchito zakhala nkhawa wamba wa anthu.Choncho, kufunika koteteza chilengedwe kuyenera kuganiziridwa posankha othandizira.Choncho, kusankha wothandizila kuchotsa mafuta kumafuna kukonzekera kosavuta, mphamvu yowonongeka ndi yolimba, ilibe sodium hydroxide, silicate, OP emulsifier ndi zigawo zina zomwe zimakhala zovuta kuyeretsa kutentha kwa firiji, zosavuta kutsuka kutentha kwa firiji, zilibe poizoni. zinthu, samatulutsa mpweya woipa, mikhalidwe yabwino yogwirira ntchito.Kusankhidwa kwa dzimbiri kuchotsa kumafuna kuphatikizapo olimbikitsa, zoletsa dzimbiri ndi zoletsa, akhoza kusintha liwiro la dzimbiri kuchotsa, kuteteza workpiece kuchokera pa dzimbiri ndi hydrogen embrittlement, akhoza bwino ziletsa asidi chifunga.Ndi woyenera kwambiri asidi nkhungu kuletsa, zikuchitika m`kati pickling asidi nkhungu, dzimbiri zida ndi zomera, osati kuipitsa chilengedwe, ndipo zingayambitse mano, mano redness conjunctival, misozi, ululu, youma pakhosi, chifuwa ndi zizindikiro zina. , amalepheretsa bwino chifunga cha asidi, osati kufunikira koteteza chilengedwe, kapena chifukwa cha thanzi ku zosowa za wogwira ntchito.
Kusamba madzi
Kutsuka pambuyo pochotsa mafuta ndikuchotsa dzimbiri, ngakhale kuti ndi ya njira yothandizira musanayambe kujambula, iyeneranso kuchititsa chidwi chokwanira.Pambuyo kuchotsa mafuta ndi dzimbiri kuchotsa, pamwamba pa workpiece n'zosavuta kutsatira ena sanali ionic surfactants ndi CL-.Zinthu zotsalirazi zikapanda kutsukidwa bwino, zitha kuyambitsa kuwonda kwa filimu ya phosphating, zolakwika za mzere, ngakhalenso phosphating.Choncho, kuti mukhale ndi ubwino wa kutsuka kwa madzi mutatha kuchotsa mafuta ndi kuchotsa dzimbiri, m'pofunika kudutsa ma rinses angapo, ma rinses awiri, nthawi ya 1-2min, ndipo nthawi zambiri m'malo mwa madzi kuti muwonetsetse kuti madzi a PH ali pakati pa 5-7. .
Phosphating
Otchedwa phosphating, amatanthauza zitsulo workpiece pambuyo munali dihydrogen mankwala asidi njira mankhwala, anachita mankhwala ndi pamwamba pake kupanga wosanjikiza khola insoluble mankwala filimu, filimu amatchedwa phosphating filimu.Cholinga chachikulu cha filimu ya phosphating ndikuwonjezera kumamatira kwa zokutira ndikuwongolera kukana kwa dzimbiri kwa zokutira.Pali njira zambiri za phosphating, malinga ndi kutentha kwa phosphating, zitha kugawidwa mu kutentha kwa phosphating (90-98 ℃), sing'anga kutentha phosphating (60-75 ℃), otsika kutentha phosphating (35-55 ℃) ndi kutentha wabwinobwino. phosphating.
Chisangalalo
Tekinoloje ya passivation ya filimu ya phosphating imagwiritsidwa ntchito kwambiri ku North America ndi mayiko aku Europe.Tekinoloje ya passivation imatengera mawonekedwe a filimu ya phosphating yokha.Filimu ya phosphating ndi yopyapyala, kawirikawiri mu 1-4G / m2, pazipita siziposa 10g / m2, malo a pore aulere ndi aakulu, ndipo kukana kwa dzimbiri kwa filimuyo kumakhala kochepa.Ena ngakhale mu kuyanika ndondomeko pa mofulumira chikasu dzimbiri, pambuyo phosphating ndi passivation chatsekedwa mankhwala, akhoza phosphating filimu pore poyera zitsulo makutidwe ndi okosijeni, kapena mapangidwe passivation wosanjikiza, phosphating filimu akhoza kuimba kudzazidwa, makutidwe ndi okosijeni, kupanga phosphating filimu khola mu mpweya.
Kuyanika kwa filimu ya phosphating
Kuyanika phosphating filimu akhoza kuchita maudindo awiri, pa dzanja limodzi, ndi kukonzekera ndondomeko yotsatira kuchotsa madzi pamwamba pa filimu phosphating, Komano, ndi kupititsa patsogolo kukana dzimbiri filimuyo. pambuyo zokutira.
Kuti akhazikitse mzere wopangira pretreatment, ndondomekoyi iyenera kumalizidwa musanayambe kupanga, kupanga ndi kuyika zida zosagwiritsidwa ntchito.Choncho, mapangidwe apangidwe ndi maziko a mzere wopangira, ndipo njira yolondola komanso yololera idzakhala ndi zotsatira zabwino pa ntchito yopangira ndi khalidwe la mankhwala.
Amagwiritsidwa ntchito pamitundu yonse ya zojambula za workpiece, zitsanzo zina zimatha kusinthidwa.
Zogwirizana nazo
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Magalimoto a cab electrophoresis kupanga mzere
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