1.Dab tsi yog qhov tsim nyog rau cov xeb dawb rau ntawm qhov chaw ntawm galvanized coil?
Kev sib cuag ncaj qha nrog dej: xws li nag lossis dej nyab.
Condensation: Qhov no yog qhov feem ntau tshwm sim thiab zais qhov ua rau. Thaum lub ambient kub fluctuates ho, noo noo nyob rau hauv cov huab cua condenses rau hauv dej droplets nyob rau hauv txias nto ntawm daim ntawv galvanized. Yog hais tias cov coils yog nruj nreem kaw, cov dej tee no yog "raug" ntawm cov txheej, tiv thaiv lawv los ntawm evaporating.
Cov av noo siab: Ntev- lub sijhawm khaws cia hauv ib puag ncig nrog cov av noo siab tshaj 85% tuaj yeem ua rau cov dej nyias nyias tuaj yeem tsim rau ntawm qhov chaw, txawm tias tsis pom cov tee dej, uas txaus ua rau corrosion.
2.Dab tsi yog cov xwm txheej txaus rau cov xeb dawb rau ntawm qhov chaw ntawm galvanized coil?
Tightly txhab: Galvanized coils feem ntau yog nruj nreem kaw thaum lub sij hawm tsim khoom thiab kev thauj mus los, ua rau muaj qhov chaw tsawg heev ntawm cov txheej.
Xauv- tawm cua ncig: Hauv qhov chaw kaw, huab cua tsis tuaj yeem ntws dawb. Cov dej noo uas nkag mus yog qhov nyuaj kom qhuav tawm, thiab pib siv cov pa oxygen los ntawm zinc thaum lub sij hawm corrosion tsis tuaj yeem rov ua dua.
Imperfecting protective film formation: In normal atmospheric conditions, zinc reacts with carbon dioxide to form a dense, durable protective film of basic zinc carbonate (typically gray, a normal appearance). Txawm li cas los xij, nyob rau hauv ib puag ncig, huab cua tsis zoo, carbon dioxide tsis tuaj yeem nkag mus, thiab hloov cov hmoov dawb ntawm zinc carbonate thiab zinc hydroxide, uas peb pom tias yog "dawb xeb."
3.Dab tsi yog yam uas ua rau cov xeb dawb ntawm cov galvanized coils?
Corrosive ions: Chloride ions (xws li dej hiav txwv thiab ntsev tsuag) los yog sulfate ions (kev lag luam huab cua) hauv dej los yog ib puag ncig tuaj yeem ua kom muaj zog thiab hnyav ntawm xeb dawb.
Acid thiab alkaline ib puag ncig:
Cov tshuaj acidic: zinc yog soluble hauv acid heev. Yog hais tias saum npoo yog paug nrog acidic tshuaj (xws li tes hws, unwashed acid, los yog industrial acid gases), nws yuav ncaj qha ua rau cov zinc txheej thiab ua kom corrosion nyob rau hauv ib puag ncig ntub.
Cov tshuaj alkaline: Cov hauv paus muaj zog tuaj yeem ua rau zinc, tab sis tsawg dua li cov kua qaub.
Dissimilar hlau sib cuag: Yog hais tias galvanized coils tuaj rau hauv kev sib cuag nrog dissimilar hlau xws li tooj liab thiab hlau thaum nyob rau hauv ib tug electrolyte, ib tug galvanic cell forms, accelerating zinc corrosion.
Kev puas tsuaj saum npoo: Yog tias cov zinc txheej yog khawb los yog dented, nthuav tawm cov hlau substrate, corrosion cell nrog ib tug me me anode (zinc) thiab ib tug loj cathode (steel) cov ntaub ntawv, sai sai noj cov zinc txheej thiab ua dawb corrosion.
4.Yuav ua li cas tiv thaiv cov xeb dawb?
Cia ib puag ncig:
Khaws hauv tsev nyob rau hauv qhov chaw qhuav, zoo-ventilated warehouse.
Tsis txhob cuam tshuam ncaj qha nrog cov plag tsev lossis phab ntsa; siv ntoo skids los tsa cov khoom.
Tswj qhov kub thiab av noo nyob rau hauv lub warehouse kom tsis txhob muaj qhov kub thiab txias hloov pauv uas yuav ua rau condensation.
Ntim thiab Thauj Khoom:
Siv xeb- ntawv pov thawj lossis xeb- cov ntaub ntawv pov thawj los cais cov txheej txheem. Cov ntaub ntawv no muaj vapor-phase xeb inhibition zog.
Xyuas kom lub ntim ntim nruj nreem kaw kom tsis txhob muaj nag thiab ya raws.
Thaum lub sij hawm kev thauj mus los, npog nruj nreem nrog ib tug waterproof tarpaulin.
Txoj kev stacking:
Yog tias qhov chaw cia sab nraum zoov yog qhov tsim nyog rau lub sijhawm luv luv, cov yob yuav tsum tau muab tso ncaj (piv txwv li, sawv ntsug) thiab npog nrog tarpaulin. Xyuas kom muaj qhov cua txaus rau hauv qab thiab sab saum toj kom tsis txhob muaj cua sov sab hauv thiab condensation.
Tsis txhob muab cov rolls tiaj tus rau sab saum toj ntawm ib leeg, vim qhov no tuaj yeem ua rau condensation los ntawm cov khaubncaws sab nraud povtseg.
5.Kuv yuav ua li cas yog tias cov xeb dawb tau tshwm sim?
Lub teeb dawb xeb: Qhov no feem ntau tsuas yog cov hmoov dawb dawb ntawm qhov chaw, uas tuaj yeem raug tshem tawm nrog cov ntaub mos muag lossis mos- txhuam txhuam. Nws feem ntau tsis cuam tshuam rau corrosion kuj ntawm zinc txheej.
Kev xeb dawb loj: Yog tias cov deposits loj ntawm cov dawb los yog dub deposits tau tsim, los yog txawm liab xeb (xeb ntawm cov hlau substrate), zinc txheej tau raug corroded heev, txo nws cov corrosion kuj thiab yuav tsum tau kev kho mob los yog downgrading.