1.How yog Zinc Txheej Qhov ceeb thawj cuam tshuam rau huab cua huab cua?
Lub zinc txheej hnyav rau architectural galvanized coils yuav tsum phim cov corrosiveness ntawm ib puag ncig:
Cov chaw nyob deb nroog / Nroog ib puag ncig: ntau dua lossis sib npaug zos rau Z140 (Zinc Txheej Ceeb hnyav 140G / M², sib raug rau Zinc Txheej Thickness ntawm ≈20μm);
Industrial / Nqaum Hauv Cheeb Tsam (C3): Ntau dua lossis sib npaug nrog Z275 (275g / M², ≈39μm);
Cov chaw muaj av noo / Coalal (C4): ntau dua lossis sib npaug zos rau Z350 (350g / m², ≈50μm);
Tej yam huab marine ib puag ncig (C5, tsawg dua los yog sib npaug ntawm 1k4μm) lossis sib npaug zos (450
2.How ua txau tshuaj ntsev cuam tshuam rau kev cuam tshuam huab cua?
Lub sij hawm kom tsis txhob xeb rej: Z275 ntau dua lossis sib npaug, z350 ntau dua los yog sib npaug zos, zinc-coating (ZM100) ntau dua lossis sib npaug nrog 1500 teev.
Yog tias cov xeb dawb (ib qho khoom xeb ntawm zinc) tshwm sim, nws yuav tsum dhau txoj kev ntsuas hloov dua siab tshiab "(piv txwv li, dej nag tsis nrawm substrate corrosion).
3. Yuav ua li cas yog huab cua cov kev kho mob nce ntxiv?
Zaj duab xis passivation:
Chromate passivation (maj phased tawm) lossis chromium-dawb passivation (xws li kev ua si thiab Titanate) yuav tsum ua kom tau raws li cov yuav tsum tau ua hauv qab no:
Corrosion Kuj: Dawb Ruv ntsej muag lub sijhawm nyob rau hauv cov tshuaj ntsev ua haujlwm tom qab ua rau muaj ntau dua lossis sib npaug nrog 120 teev (Chromate Passivation);
Adhesion: Lub zog Bondation ntawm zaj duab xis passivation zaj duab xis thiab zinc txheej ntau dua los yog sib npaug rau 3n / cm (tsis muaj tev rau hauv daim kab xev peel xeem);
Kev ya raws thiab kub ua rau: tsis muaj blistering lossis tev tom qab 1000 teev ntawm 40℃thiab 95% av noo.
Xim txheej (rau cov xim-coated galvanized chev):
Architectural xim-coated galvanized chev yuav tsum ua kom tau raws li cov kev cai hauv qab no:
UV Laus Refillance: Tom qab 1000 teev ntawm Qaum Kev Ntsuas Kev Ntsuas (simulating tshav ntuj UV duab, thiab xim sib txawv ntawm ΔE tsawg dua lossis sib npaug rau 3.
Acid thiab alkali corrosion resistance: Tom qab immersion hauv 5% sulfuric acid los yog 5% sodium hydroxide tov rau 24 teev yuav tsum muaj kev blistering lossis discoloration. (Rau cov chaw ntug hiav txwv, txhim kho ntsev txau yog qhov yuav tsum tau; cov txheej yuav tsum muaj tsis muaj xeb tom qab 500 teev ntsev tshuaj tsuag.)
Kev hloov pauv kub fluction: Tom qab 50 mus txog ntawm -40 Qib rau 80℃yuav tsum muaj kev tawg lossis ua kom muaj kev hloov pauv ntawm cov pa hluav taws xob).
4.What yog kev zam kev puas siab thiab ua kev puas tsuaj?
TXHEEJ / Zinc Adhesion:
Khoov xeem: Tom qab 180℃dabtsi yog khoov (khoov rwb vojvoog= 2 x phaj tuab), cov zinc / txheej yuav tsum muaj tsis muaj kev ua si lossis tawg.
Kev Ntsuas Qhov Kev Ntsuas: Tom qab muaj 5J cuam tshuam, txheej yuav tsum muaj tsis muaj kev sib cais, thiab zinc txheej yuav tsum tsis txhob raug (kom tiv thaiv kom tsis txhob muaj (kom tiv thaiv kom nrawm nrawm ntawm thaj chaw puas qab).
Txhuas:
Cov tsho tiv no (xws li cov xim pleev xim ua ntej) yuav tsum tau ua kom ploj ntawm qhov qis dua lossis sib npaug ntawm 50mg (1000
5.Qhov twg yog qhov sib txawv ntawm huab cua tiv thaiv kev xav tau rau cov xwm txheej sib txawv?
Nyob deb nroog / dog dig tiv thaiv yuav tsum tau zinc txheej kom muaj ntau dua lossis sib npaug (chromium-dawb) tuaj yeem siv, xws li cov qauv hlau txuas ntxiv).
Muaj lub zos: huab cua-resistant zinc txheej ntau dua los yog sib npaug ntawm z275, acid-resistant txheej (xws li polyester kuaj ntau dua los yog sib npaug nrog 500h yam tsis muaj xeb liab.
Cov chaw dej hiav txwv: huab cua tiv thaiv muaj xws li zinc-alooy-maine existant ion corrosion dua li cov zinc corrosion dua li ntshiab zinc). Xim txheej yuav tsum pvdf txheej (huab cua tsis kam nce qib ntau dua lossis sib npaug rau 20 xyoo).
Kev kub siab thiab cov huab cua siab: huab cua tsis tau yuav tsum tau ntxiv ntawm cov hmoov av (40 degree, 95 teev uas tsis muaj mildew lossis bubbling.