1.What yog qhov sib txawv ntawm cov txheej txheem tiv thaiv kev ua haujlwm ntawm cov coilanized coils thiab xim-coated galvanized coils?
Chocal zoo tib yam chev: lub zinc txheej tiv thaiv cov hlau phaj los ntawm kev txi anode effect. Tom qab zinc txheej nws tus kheej corroundes, nws tsim cov zinc oxide / zinc carbonate los thaiv kev corrosion, tab sis zaj duab xis kuj yooj yim.
Xim-coated Galvanized Chev: Galvanized Txheej muab cov txheej txheem rau corrosion ultraviolet rays ntawm "lub cev muaj kuab paug rau" lub cev tiv thaiv + electrochemical kev tiv thaiv ".
2.What yog qhov sib txawv ntawm kev tsis kam mus rau cov atmospheric corrosion?
Pa Galvanized Chev:
Corrosion tsis kam nyob ntawm qhov tuab ntawm zinc txheej. Hauv thaj chaw qhuav (xws li nyob deb nroog), ib 80g / m² zinc txheej tuaj yeem kawg 5-8 xyoos. Txawm li cas los xij, hauv cov ntug dej hiav txwv ib puag ncig (cov tshuaj tsw qab (xeb)
Pre-coated galvanized chev:
Cov txheej txheem organic (xws li PVDF Topcoat) muab lub cev rau cov xov xwm corrosive. Txawm hais tias muaj ib qho kev zas zinc nyias nyias (piv txwv li, m²), ua ke nrog cov fluorocarbon txheej hauv cov ntug dej hiav txwv, cov corrosion tsis kam ncav tau 15-20 xyoo. Cov txheej txheem cov yees polyester kuj tseem tuaj yeem txuas lub neej ntawm cov pa roj hmab galvanized chineser nrog tib qho zinc txheej hauv thaj chaw muaj kev lag luam los ntawm 2-3 zaug.
3.Yog li cas yog qhov sib txawv ntawm UV tsis kam thiab kev ua haujlwm laus?
Pa Galvanized Chev:
Yog tsis muaj cov organic txheej tiv thaiv, txheej zinc tau raug rau UV thau UV rau lub sijhawm ntev, ua rau lub ntsej muag oxide thiab diav zoo, nrawm zinc corrosion. Tsis tas li ntawd, cov kev hloov pauv kub (thermal expansion thiab condaction) tuaj yeem ua rau cov txheej zinc yooj yim kom tawg, txo nws cov kev tiv thaiv kev tiv thaiv.
Pre-coated galvanized chev:
Topcoats (xws li SMP thiab PVDF) muaj UV-resistant additives uas nqus lossis muaj kev cuam tshuam UV duab (xws li courning thiab discoloration). Piv txwv li, tom qab 3000 teev ntawm QUCE ceev cov huab cua sib txawv (ΔE) ntawm PVDAAT TOPOSAT yog tsawg dua 3, Whereas PervaT
4.Qhov dab tsi yog qhov sib txawv ntawm qhov kub thiab cov av noo tsis kam thiab dej vapor permeability?
Pa Galvanized Chev:
Nyob rau hauv kev kub-kub, zoo li lub caij ntub dej ib puag ncig (xws li lub caij los nag nyob rau sab qab teb Suav teb), electrolytes tau yooj yim rau hauv zinc nto, nrawm elegrochemical corrosion. Cov xeb dawb (ib qho khoom xeb ntawm zinc txheej) yuav tshwm nyob tsis pub dhau 1-2 xyoos, thaum kawg tsim kom muaj xeb liab.
Pre-coated galvanized chev:
Tus pib (xws li epoxy) thiab topcoat ua cov yeeb yaj kiab tuab uas thaiv ntau dua 90% ntawm dej vapor nkag. Ua ke nrog cov passivation txheej, nws txhim kho adhesion. Hauv kev ntsuas kub qhuav dej ntawm 85℃/ 85% rh, tsis muaj blistering lossis zinc corrosion tau tshwm sim tsis pub dhau 1000 teev.
5.Qhov qhov sib txawv ntawm cov khoom siv paug rau kev tawm tsam thiab tshuaj lom neeg?
Pa Galvanized Chev:
Rhiab rau cov kua qaub npuas (pH <5.6) thiab muaj cov hmoov av (muaj cov sulfand
Pre-coated galvanized chev:
Cov PvDSats zoo (xws li PVDF) muaj ntau cov kua qaub thiab alkali tiv thaiv ntau yam (pH 3-11), tiv taus corrosion los ntawm acid los nag thiab muaj cov pa roj cua. Lawv kuj muab cov kev ua tau ruaj khov nyob hauv nroog loj lossis cov chaw muaj kuab paug siab.