1.Dab tsi yog qhov tseem ceeb tiv thaiv mechanism ntawm galvanized coils?
Lub cev barrier + cathodic tiv thaiv
Lub hauv paus ntsiab lus tiv thaiv yog zinc corrodes ua ntej hlau, siv nws tus kheej los tiv thaiv cov hlau.
2.Dab tsi yog qhov tseem ceeb tiv thaiv mechanism ntawm xim hlau daim hlau?
Kev tiv thaiv ntau txheej: lub cev thaiv + cathodic tiv thaiv + tshuaj inertness
Lub hauv paus ntsiab lus tiv thaiv yog cov xim txheej cais dej thiab huab cua; txawm tias cov xim puas lawm, zinc txheej tseem muab kev tiv thaiv.
3.Dab tsi yog qhov tsis zoo ntawm galvanized coils?
Kev cuam tshuam ncaj qha ntawm cov zinc txheej: Cov dej nag (tshwj xeeb tshaj yog cov kua qaub nag) reacts ncaj qha nrog zinc txheej, tsim "dawb xeb." Thaum cov xeb dawb tuaj yeem ua kom qeeb corrosion rau qee qhov, cov nag tsis tu ncua yuav maj mam deplete zinc txheej.
Kev tiv thaiv khib nyiab: Kev tiv thaiv muaj peev xwm ntawm cov zinc txheej ncaj qha rau nws cov tuab. Thaum cov zinc txheej tau noj tag lawm, lub hauv paus steel substrate yuav xeb sai, tsim "xeb liab."
Kev hloov pauv sai sai: Txawm tias tsis muaj kev puas tsuaj, kev raug nag ntev ntev yuav ua rau lub ntsej muag du thiab npog nrog cov xim dawb, cuam tshuam rau nws cov tsos.
4.Dab tsi yog qhov zoo ntawm cov xim hlau ntawv?
Cov khoom thaiv zoo heev: Lub siab -coat topcoat (thiab backcoat kuj tseem ceeb) zoo cais cov dej nag thiab huab cua los ntawm cov txheej hlau hauv qab, tiv thaiv electrochemical corrosion ntawm nws qhov chaw.
Tshuaj tiv thaiv: Cov coatings siv cov xim -coated steel nplooj ntawv (tshwj xeeb tshaj yog PVDF fluorocarbon) muaj cov kua qaub thiab alkali tsis kam, zoo tiv taus acid los nag yaig.
Kev tiv thaiv ob npaug: Txawm hais tias lub tsho sab saum toj raug kev puas tsuaj me me vim yog cov khoom siv khawb lossis lub sijhawm ntev - kev laus, cov txheej hauv qab galvanized activates cathodic tiv thaiv kom tsis txhob xeb sai ntawm qhov chaw puas, zoo heev txhim kho tag nrho cov khoom siv.
5.Dab tsi yog qhov txawv ntawm lawv lub neej?
Galvanized coils: Lawv lub neej ua haujlwm feem ntau nyob ib puag ncig 10-25 xyoo, tom qab ntawd xeb yuav tshwm sim. Lawv lub neej ntev yog nyob ntawm qhov tuab ntawm cov txheej galvanized (xws li Z60, Z90, Z120, thiab lwm yam, qhov twg cov lej sawv cev qhov hnyav ntawm zinc ib square meter ntawm ob sab).
Xim -cov ntawv hlau coated: Lawv lub neej kev pabcuam tuaj yeem ncav cuag 15-30 xyoo lossis ntev dua. Lawv lifespan yog heev nyob ntawm:
Lub thickness ntawm galvanized txheej ntawm lub substrate (nws "puag").
Hom thiab zoo ntawm cov txheej txheej (nws "nto," PVDF > silicone - hloov polyester > polyester).
Lub thickness ntawm txheej (pem hauv ntej thiab nram qab).