1.What yuav tsum npaj rau theem npaj?
Uncoiling thiab leveling
Tus dov rau hauv galvanized substrate (feem ntau kub -}} galvanized qhov tseeb yog feem ntau tswj tau tsawg dua lossis sib npaug rau 0.5 hli / m).
Cov Khoom Siv Tseem Ceeb: UNCOILER, Qib, thiab Tension Controller (los tiv thaiv ncab thiab deformation ntawm substrate).
Degreasing thiab tu
Siv cov alkaline degreaser (xws li sodium hydroxide lossis sopium carbonate kev daws teeb meem los ntawm substrate dege) lossis kev siv tshuaj pleev ib ce, thiab txias 10-30 seconds).
Tom qab, yaug nrog dej huv 2-3 lub sij hawm tiv thaiv kom tsis txhob muaj kev cuam tshuam los ntawm kev cuam tshuam cov txheej txheem nplaum. Cov dej txias (xaiv tau, nyob ntawm cov txheej txheem yuav tsum)
Rau cov ntawv thov xav tau cov admin kom zoo, zinc phosphate lossis chromium - kev daws teeb meem pub dawb yog siv rau cov khoom txias. Qhov no tsim ib qho Nanoscale hloov dua tshiab zaj duab xis (thickness tsawg dua los yog sib npaug ntawm 1μm) ntawm cov nplaum ntawm zinc, txuas ntxiv txhim kho cov nplaum thiab lub substrate thaum txhim kho corrosion.
Tom qab kho, lub substrate yuav tsum tau ua ntej - qhuav nrog cov huab cua kub (80-120 degree) kom ntseeg tau tias tsis muaj noo noo nyob rau ntawm substrate nto.
2.Yog li cas thov cov txheej txheej rau thawj zaug?
Thov qhov primer (feem ntau epoxy lossis polyester primer, nrog cov ntsiab lus muaj txiaj ntsig ntawm 50% (cov kev lag luam me me)
Tswj cov yeeb yaj kiab qhuav: feem ntau 5-15μm (piv txwv li, thicker primer rau vajtse vajtse panels, thinner rau cov khoom siv khoom siv). Daim ntawv thov ceev: 20-60m / min (kom phim cov kev ua tau zoo ntawm kev kho qhov cub).
3. Ua li cas ua thawj zaug ua ntej -}} qhuav (nyem kom qhuav)?
Tom qab primer txheej, lub substrate thawj nkag mus rau feem ntau ntawm cov huab cua qhuav qhov cub (qhov kub kom loj dua lossis sib npaug rau 80%). Qhov no tiv thaiv kev kub siab ceev thaum lub sijhawm ua haujlwm siab ntxiv, uas tuaj yeem ua rau blistering thiab pinholes hauv txheej.
Cov txheej txheem tsis: Qhov kub 80-120 degree, kho lub sijhawm 20-40 vib nas this. Tus yuam sij yog "tsawg kub thiab qeeb ziab" kom tiv thaiv kev ua yeeb yaj kiab thaum ntxov.
4.How ua kom ua thawj zaug kho (primer kho)?
Tom qab flash kom qhuav, lub substrate nkag siab qhov siab- cua sov los ntawm cov ntoo cua sov inp, qhov chaw kub, sib sau ua yeeb yam, ruaj khov primer zaj duab xis.
Cov txheej txheem tsis muaj: qhov kub 180 {{}} 220℃nyob ntawm ntau dua lossis sib npaug los ntawm kev ntsuas hluav taws xob ntau dua (DSC)). Tom qab kho, lub substrate yog txias rau hauv qab 50℃los ntawm dej lossis cua txias.
5.Qhov ua kom ua qhov thib ob txheej thiab kho ob zaug?
Ob Txheej (Topcoat)
Zoo ib yam li cov txheej txheem thov cov ntawv thov, ib qho topcoat (feem ntau polyescarbon topcoat, lossis silicone {{%) yog thov siv cov txheej txheem cov menyuam. Cov xim tawv lossis cov qauv (xws li ntoo nplej lossis pob zeb lis) tuaj yeem siv raws li xav tau.
Tswj cov zaj duab xis qhuav: feem ntau 15-30μm (vim nws cov huab cua siab tiv thaiv, tuaj yeem nce txog 25-40μm). Ua kom ntseeg tau tias cov khoom nplaum zoo rau cov txheej txheej pib thaum thov kom tsis txhob muaj interlayer delamination delamination.
Thib ob ua ntej -}} qhuav (nyem kom qhuav)
Zoo ib yam li cov txheej txheem tam sim no, txoj kev no tshem tawm cov kuab tshuaj los ntawm topcoat kom tiv thaiv tsis taus thaum lub sij hawm kho.
Cov txheej txheem tsis: kub 70-110℃(xav tau cov kev hloov kho me me, yuav tsum tau kho me me rau qhov kub), sijhawm 20-35 vib nas this. Rau cov qauv todcoats, lub eeb qhuav nrawm yuav tsum tau tswj kom tiv thaiv kev tawm tsam ntawm tus qauv. Kev Kho Thib Ob (Topcoat Kho)
Lub topcoat yog tom qab ntawd crosslinked thiab kho nyob rau hauv lub siab -}} kub kho qhov cub. Cov txheej txheem tsis yuav tsum sib phim cov yam ntxwv ntawm lub topcoat Rivin:
Polyester Topcoat: Kho qhov kub 180-210 degree, lub sijhawm kho 1.5-3 feeb;
Fluorocarbon Topcoat: Kev kho tus kheej kub 230-250℃(fluorocarbon resin crosslinks ntawm ib lub siab dua 2-4 feeb.
Tom qab kho tau, cov txheej txias maj (ua ntej los ntawm cov cua txias rau hauv qab 100 degree, tom qab ntawd los ntawm dej txias mus rau chav kub) kom tsis txhob tawg los ntawm loj sib txawv.