1. Q: Puas yog txias -rolled coil haum rau ductwork? Nws qhov txiaj ntsig tseem ceeb yog dab tsi?
A: Muaj feem xyuam, tab sis ceev faj xaiv cov khoom tsim nyog. Txias-rolled coil tuaj yeem siv los ua ductwork substrate, tab sis nws yuav tsum tau ua ke nrog kev tiv thaiv kev tiv thaiv - kev ntsuas corrosion.
Lub ntsiab zoo:
Zoo formability: Txias-rolled coil muaj ib tug elongation tus nqi ntau tshaj los yog sib npaug zos rau 28%, ua tau raws li cov kev cai ntawm ductwork seams, folding, yob txoj kev, thiab lwm yam, haum rau kev tsim cov duab plaub, puag ncig, thiab irregularly zoo li tus ducts;
Smooth nto: High thickness raug (± 0.05mm), nruj seams, thiab tsis tshua muaj cua to;
Tus nqi kom zoo dua: Cov nqi raw khoom yog kwv yees li 70% ~ 80% ntawm cov hlau galvanized thiab 30% ~ 40% ntawm stainless hlau.
2.Cov lus nug: Dab tsi yog cov kev txwv tseem ceeb ntawm cov khoom txias -rolled coils?
Cov kev txwv tseem ceeb:
Tsis zoo corrosion kuj: liab qab txias- dov coils yog heev yooj yim mus rusting nyob rau hauv cov av ntub los yog corrosive gas ib puag ncig thiab tsis tuaj yeem siv ncaj qha rau cov pa cua;
Yuav tsum tau tom qab-kev kho mob: Yuav tsum tau tiv thaiv- kev kho corrosion xws li galvanizing, txau, los yog zaj duab xis txheej, ua kom cov txheej txheem thiab nqi;
Tsis haum rau cov xwm txheej tshwj xeeb: Tsis pom zoo rau siv nyob rau hauv ib puag ncig xws li chav ua noj fumes (muaj cov tshuaj acidic), chemical plant exhaust (corrosive gases), thiab damp basements.
3.Nqe lus nug: Thaum siv cov khoom txias- dov coils los tsim cov ducts, cov txheej txheem galvanized yuav tsum ua li cas nrog cov txheej txheem ua haujlwm?
Cov ntsiab lus tseem ceeb rau kev siv thev naus laus zis hloov kho:
Sealing / dabtsi yog khoov: txheej txheej galvanized yog nquag tawg thaum ua. Lub kaum sab hauv khoov R yuav tsum tswj kom siab dua lossis sib npaug ntawm 1.0t (phaj tuab), thiab ntse -lub kaum sab xis yuav tsum zam. Nws raug nquahu kom siv cov roj lubricating tshwj xeeb rau cov tshuab seaming kom txo cov txheej txheej hnav.
Vuam: Zinc vapor yog tsim thaum lub sij hawm vuam ntawm galvanized los xij. Qhov cua yuav tsum muaj zog. Spot welding tuaj yeem siv tsis tas siv vuam txuas ntxiv, lossis txheej txheej tuaj yeem ua hauv av ua ntej vuam.
Txiav ntug kev tiv thaiv: Txiav ntug yog cov ntsiab lus tsis muaj zog rau corrosion. Ib lub zinc-nplua nuj primer yuav tsum tau siv rau kev txiav cov npoo kom ntseeg tau tias tag nrho cov corrosion kuj.
4. Nqe lus nug: Tus nqi li cas -kev ua tau zoo ntawm cov cua txias- dov coiled cua ducts piv rau galvanized sheet cua ducts thiab stainless hlau cua ducts?
Xaus:
Rau cov qauv hauv tsev ductwork: Kub-dip galvanized steel (GI) yog tus nqi tshaj plaws - kev xaiv zoo, tsis tas yuav muaj kev kho mob thib ob thiab muab tus nqi qis tshaj plaws.
Rau luv -cov haujlwm ua haujlwm / qhov cua ib ntus: Txias- cov coils nrog cov tshuaj tsuag txheej tuaj yeem siv tau, tab sis yuav tsum tau txais lub neej luv dua.
Tsis pom zoo: Siv cov khaub thuas txias-rolled coils los ua ductwork (tsis muaj kev tiv thaiv kev tiv thaiv- kev kho corrosion) yog qhov cuam tshuam rau corrosion txawm nyob rau hauv ib puag ncig sab hauv tsev, thiab cov nqi txij nkawm tom qab deb dua cov khoom txuag.
5. Q: Yog tias txias- dov coil raug xaiv rau kev ua haujlwm, yuav ua li cas thiaj ua tau zoo thiab kev ua neej nyob? Thov muab cov lus qhia txog kev siv.
A: Yog tias txias- dov coil yuav tsum tau siv los ua lub substrate, cov kev ntsuas hauv qab no yuav tsum tau ua nruj me ntsis:
1. Substrate Control:
Siv DC01 qib lossis siab dua txias- dov coil, nrog lub thickness kam rau ua tsawg dua lossis sib npaug rau ± 0.05mm thiab flatness Tsawg dua lossis sib npaug rau 3IU kom ntseeg tau tias cov txheej txheem zoo ib yam.
Ua ntej yuav khoom ua ntej-galvanized txias- dov coil (ie, kub-dip galvanized ntawv) es tsis yog galvanizing liab qab daim ntawv kom tsis txhob muaj kev puas tsuaj rau txheej thaum lub sijhawm ua haujlwm thib ob.
2. Cov txheej txheem tiv thaiv corrosion:
Yog tias siv cov ntawv galvanizing liab qab, xyuas kom cov nroj tsuag galvanizing tsim nyog, txheej txheej txheej dhau los ntawm kev sim tooj liab sulfate, thiab txheej txheej hnyav dua lossis sib npaug li 80g / m².
Thaum siv cov txheej txheem tshuaj tsuag, tswj cov phosphating zaj duab xis hnyav rau 2 ~ 4g / m², txheej txheej thickness Ntau dua los yog sib npaug rau 80μm, thiab dhau qhov kev ntsuam xyuas ntsev rau ntau dua lossis sib npaug li 240 teev.