Galvanized steel kauj, cov khoom siv hlau nrog zinc-coated nto, yog dav siv nyob rau hauv ntau yam kev lag luam thiab thaj chaw siv vim nws zoo heev corrosion kuj thiab mechanical zog. Qhov kev xaiv ntawm nws daim ntawv thov ib puag ncig cuam tshuam ncaj qha rau nws lub neej kev ua haujlwm thiab kev ua haujlwm, yog li kev nkag siab txog kev hloov pauv ntawm galvanized steel coils hauv qhov chaw sib txawv yog qhov tseem ceeb.
1. Ib puag ncig huab cua dav dav
Nyob rau hauv ib puag ncig atmospheric, xws li cov uas pom nyob rau hauv nroog cov tsev, txuas hniav, thiab steel qauv factories, galvanized steel coils muaj zoo heev huab cua tiv thaiv. Cov zinc txheej tau zoo cais cov dej noo thiab oxygen los ntawm huab cua, ua rau cov txheej txheem oxidation ntawm cov hlau thiab yog li txuas nws lub neej kev pab cuam. Nyob rau hauv cov cheeb tsam uas tsis muaj kuab paug thiab tsis tshua muaj av noo, galvanized steel coils yog tshwj xeeb tshaj yog zoo nyob rau hauv kev tiv thaiv corrosion, feem ntau yog nyob rau hauv xeb - dawb rau ntau xyoo.
2. Cov av noo thiab Marine ib puag ncig
Nyob rau hauv ib puag ncig nrog high humidity los yog ze dej hiav txwv, hlau yog raug rau chloride ion nres, uas accelerates xeb. Cov zinc txheej ntawm galvanized steel coils tseem muab qee qhov kev tiv thaiv nyob rau hauv cov cheeb tsam no, tab sis ntev - lub sij hawm raug yuav maj mam degrade cov zinc txheej. Yog li ntawd, nyob rau hauv cov ntug dej hiav txwv los yog ib puag ncig uas muaj ntsev pos huab, nws yog pom zoo kom siv galvanized steel coils nrog ib tug ntau dua zinc txheej thickness los yog muab lawv nrog rau lwm yam los tiv thaiv- kev ntsuas corrosion (xws li coatings) los txhim kho lawv kev tiv thaiv.
3. Industrial Polluted ib puag ncig
Hauv thaj chaw muaj kev lag luam, corrosive gases xws li sulfur dioxide thiab nitrogen oxides hauv huab cua tuaj yeem ua kom lub zog ntawm cov hlau. Galvanized steel coils tuav zoo corrosion kuj nyob rau hauv me me kev lag luam muaj kuab paug ib puag ncig, tab sis nyob rau hauv cov cheeb tsam uas muaj kuab heev, zinc txheej yuav degraded sai heev vim muaj tshuaj tiv thaiv. Yog li ntawd, nyob rau hauv xws li ib puag ncig, nws raug nquahu kom xaiv cov galvanized steel coils nrog kev tiv thaiv ntau dua, xws li kub -dip galvanizing (GI) lossis alloyed galvanizing (GA), thiab ua haujlwm tsis tu ncua.
4. Nyob rau hauv av thiab faus ib puag ncig
Nyob rau hauv av los yog faus daim ntaub ntawv (xws li pipelines thiab cable racks), zinc txheej ntawm galvanized steel coils muab kev tiv thaiv rau av noo noo thiab tshuaj tua kab mob, tab sis nws corrosion kuj yog cuam tshuam los ntawm av pH, ntsev cov ntsiab lus, thiab huab cua permeability. Nyob rau hauv cov av acidic los yog saline heev, corrosion kuj ntawm galvanized steel coils yuav raug txo, yuav tsum tau ntxiv los tiv thaiv- kev kho corrosion xws li epoxy txheej los yog cathodic tiv thaiv.
5. Kub kub thiab ib puag ncig tshwj xeeb
Galvanized steel coils raug kub siab (piv txwv li, tshaj 200 degree) tej zaum yuav muaj oxidation los yog cov tshuaj tiv thaiv ntawm zinc txheej thiab cov substrate, ua rau txo adhesion. Yog li ntawd, kev ceev faj yog qhia thaum xaiv galvanized steel coils rau siab -kev siv kub, los yog lwm yam siab - kub- cov ntaub ntawv resistant yuav tsum tau siv. Tsis tas li ntawd, qhov kev tiv thaiv ntawm cov txheej galvanized yog txwv nyob rau hauv cov tshuaj lom neeg ib puag ncig, xws li cov muaj zog acids thiab alkalis. Stainless hlau lossis lwm yam hlau tshwj xeeb yuav tsum tau xaiv.
Xaus
Galvanized steel coils, nrog rau lawv zoo heev corrosion kuj thiab tus nqi -effectiveness, yog haum rau feem ntau ib puag ncig, tshwj xeeb tshaj yog nyob rau hauv dav dav, kev tsim kho, thiab me me corrosive ib puag ncig. Txawm li cas los xij, nyob rau hauv ib puag ncig tshwj xeeb xws li tshuaj tsuag ntsev, muaj zog acids thiab alkalis, lossis kub siab, cov tswv yim xaiv yuav tsum tau hloov kho raws li cov xwm txheej tshwj xeeb, lossis lwm yam kev tiv thaiv kev tiv thaiv -corrosion technologies yuav tsum tau ua ke kom ntseeg tau ntev -lub sij hawm. Kev ntsuas qhov chaw ua haujlwm kom raug thiab xaiv cov txheej txheem galvanizing tsim nyog yog qhov tseem ceeb rau kev ua tiav ntawm kev ua haujlwm ntawm galvanized steel coils.
