1.Yuav ua li cas lub substrate yuav tsum pretreated?
Degreasing thiab ntxuav
Lub hom phiaj: Txhawm rau tshem tawm cov roj uas seem, lubricating roj, plua plav, thiab cov khoom los ntawm kev dov lossis khaws cia.
Txoj kev: Alkaline tu tus neeg sawv cev txau los yog ntub dej, ua ke nrog cov txhuam hniav thiab electrolytic degreasing, tom qab ntawd yaug nrog dej huv.
Muaj nuj nqi: Los xyuas kom meej tias cov kev daws teeb meem tom ntej tuaj yeem tiv tauj cov hlau huv huv.
Kev kho tshuaj hloov pauv
Qhov no yog qhov tseem ceeb tshaj plaws pretreatment kauj ruam, tsim ib tug ntom uas tsis yog -hlau crystalline zaj duab xis ntawm cov hlau huv si.
Hom Lub Npe:
Phosphating: Feem ntau yog siv rau txias - cov ntawv dov. Tsim cov phosphate crystalline zaj duab xis (xws li zinc phosphate), uas yog ntxeem tau thiab zoo heev txhim kho cov xim adhesion (muab cov khoom siv anchoring) thiab muaj qee qhov luv luv - tiv thaiv xeb.
Chromating: Tsim cov chromium- muaj cov zaj duab xis passivation. Kev tiv thaiv corrosion zoo heev, tab sis vim muaj kev txhawj xeeb ntawm ib puag ncig (hexavalent chromium), nws maj mam hloov los ntawm chromium - txoj kev pub dawb.
Chromium-Free Passivation: Cov qauv tseem ceeb tam sim no. Los ntawm kev ua haujlwm zirconium-raws li, titanium-raws li, silane, los yog organic-inorganic hybrid systems, ib puag ncig tus phooj ywg passivation zaj duab xis tuaj yeem tsim, uas tuaj yeem muab qhov zoo adhesion thiab corrosion kuj.
2.Yuav ua li cas cov txheej yuav tsum tau kho?
Kub-dip galvanizing
Txheej Txheem: Txias- cov ntawv hlau yob yog immersed nyob rau hauv molten zinc los ua zinc- hlau alloy txheej thiab cov zinc txheej ntshiab.
Muaj nuj nqi: Zinc ua raws li kev txi anode, muab kev tiv thaiv electrochemical rau steel substrate. Txawm hais tias lub txheej yog khawb, zinc yuav corrode ua ntej hlau. Nws yog qhov feem ntau siv substrate hauv kev tsim kho thiab khoom siv hauv tsev.
Kub-dip galvanized aluminium-magnesium
Cov txheej txheem kho dua tshiab: Txhuas, magnesium, thiab lwm yam khoom ntxiv rau hauv zinc da dej.
Qhov zoo: Nws cov khoom siv corrosion yog denser, muaj peev xwm ntawm kev kho cov khawb. Nws cov corrosion kuj (tshwj xeeb tshaj yog ntug kev tiv thaiv) yog ob peb mus rau kaum npaug ntau dua li cov galvanizing zoo tib yam, thiab nws lub neej ntev dua.
Hluav taws xob-galvanizing
Txheej txheem: Ib txheej zinc yog uniformly tso rau saum npoo ntawm daim hlau los ntawm electrolysis.
Cov yam ntxwv: Cov txheej txheej yog sib xws, nrog lub ntsej muag du thiab muag muag, ua rau pom qhov zoo, tab sis txheej txheej feem ntau yog thinner. Nws yog feem ntau siv rau hauv cov khoom siv hauv tsev thiab cov khoom siv sab hauv uas yuav tsum tau ua kom zoo.
3.Qhov kev ua haujlwm ntawm txheej txheej txheej yog dab tsi?
Primer
Muaj nuj nqi: Muab cov adhesion zoo rau lub pre-kho substrate los yog txheej thiab lub hauv paus zoo rau topcoat. Feem ntau muaj cov khoom tiv thaiv- corrosion (xws li, epoxy primer, polyester primer).
Topcoat
Muaj nuj nqi: Muab xim, gloss, huab cua tsis kam, thiab lwm yam khoom tshwj xeeb uas xav tau.
Main Resin Hom:
Polyester: Tus nqi siab -kev ua tau zoo piv, zoo sib npaug ntawm huab cua tsis kam thiab kev ua haujlwm, feem ntau siv dav.
Silicone-hloov polyester: Cov huab cua tsis zoo dua li polyester zoo tib yam, siv rau lub tsev sab nrauv qhov kev ua haujlwm ntev yog qhov tseem ceeb.
High-hnyav polyester / fluorocarbon: huab cua tiv taus zoo, gloss zoo thiab tuav xim, siv nyob rau hauv siab- tsev kawg.
Polyvinylidene fluoride (PVDF): Pom tau tias yog ib qho saum toj kawg nkaus -tier huab cua- tiv taus txheej, siv nyob rau hauv thaj chaw thaj chaw lossis ib puag ncig hnyav.
Yas Sol: Ib txheej PVC tuab muab kev khawb zoo heev, tiv thaiv corrosion, thiab yoog raws; feem ntau siv nyob rau hauv cov khoom siv hauv tsev, suab rwb thaiv tsev panels, thiab lwm yam.
Rov qab txheej
Siv rau sab nraub qaum ntawm cov khoom yob, feem ntau yog ib txheej, muab kev tiv thaiv yooj yim, kho kom zoo nkauj, thiab rwb thaiv tsev.
4.Dab tsi yog qhov cuam tshuam ntawm kev tshaj tawm -kev ua haujlwm thiab kev ua haujlwm tshwj xeeb?
Embossing
Tom qab txheej txheej tau kho lawm, embossing rollers yog siv los nias peb - qhov ntev textures xws li ntoo grain thiab pob zeb lis rau saum npoo, txhim kho cov nyhuv zoo nkauj.
Lamination / Lamination
PVC, PET, los yog lwm yam yas zaj duab xis yog siv rau saum npoo ntawm cov xim -coated ntawv, muab kev tiv thaiv ntxiv, tshwj xeeb textures, los yog cov qauv (xws li imitation marble los yog luam tawm qauv).
Waxing lossis Protective Film Application
Ib daim ntaub nplaum los yog yas tiv thaiv zaj duab xis yog siv rau saum npoo ntawm cov khoom yob tiav los tiv thaiv khawb thaum thauj thiab ua haujlwm.
5.Qhov kev ua tau zoo tshaj ntawm cov xim -coated steel coils ua tiav li cas?
Kev ua tau zoo ntawm cov xim-coated steel coils tsis ua tiav los ntawm ib txheej txheej, tab sis tsuas yog tso siab rau "system engineering" txoj hauv kev: Hlau substrate → Plating (yeem, xws li kub-dip galvanizing) → Pretreatment (phosphating / passivation) → Primer → Topcoat → Postment {{2}
Txhua txheej ua haujlwm tshwj xeeb:
Cov plating (xws li zinc) muab ntev - tiv thaiv electrochemical corrosion.
Cov tshuaj hloov pauv txheej txheej muab txheej adhesion thiab luv - tiv thaiv corrosion.
Lub primer txhim kho adhesion thiab muab kev tiv thaiv corrosion.
Lub topcoat muab cov khoom kawg xws li kho kom zoo nkauj, huab cua tsis kam, thiab tshuaj tiv thaiv.