1. Raw khoom npaj
Cov khoom siv raw ntawm galvanized steel coils yog cov hlau zoo tib yam, uas tau ua tiav rau hauv daim hlau tiaj tus ntawm qhov xav tau loj tom qab shearing, polishing, leveling, slitting thiab lwm yam txheej txheem. Hauv cov txheej txheem no, cov kauj ruam tseem ceeb yog ntawm chav kawm shearing thiab slitting. Koj puas xav tias nws yog ib qho tseem ceeb los xyuas kom meej qhov tseeb qhov tseeb ntawm cov hlau kauj thiab lub tiaj tus ntawm cov npoo?
2. Kev kho deg
Ua ntej galvanizing, steel kauj yuav tsum tau kho saum npoo. Ua ntej, qhov saum npoo ntawm cov hlau kauj yog pickled nrog hydrochloric acid los yog sulfuric acid kom tshem tawm cov xeb thiab av. Tom qab ntawd, yaug nrog dej huv thiab tshuab ziab nrog cua compressed. Lub hom phiaj ntawm qhov no yog los xyuas kom meej tias cov txheej txheem galvanized tuaj yeem ua kom nruj rau cov hlau nto, yog li txhim kho cov nyhuv tiv thaiv corrosion.
3. Kub dip galvanizing
Kub-dip galvanizing yog ib feem tseem ceeb ntawm galvanized steel kauj ua. Cov hlau coil kho tau muab tso rau hauv lub tank galvanizing, thiab zinc txheej melted ntawm qhov kub thiab txias npog rau saum npoo ntawm cov hlau los ua zinc alloy txheej. Cov txheej txheem no yuav tsum tau ua nyob rau hauv qhov kub thiab txias, feem ntau qhov kub thiab txias yog tswj ntawm 450-500 degree . Nyob rau tib lub sijhawm, lub thickness ntawm zinc txheej yuav tsum tau tswj kom ua tau zoo dua los tiv thaiv corrosion.
4. Cua txias thiab passivation
Kub-dip galvanized steel coils yuav tsum tau txias thiab passivated. Kev ua kom txias tuaj yeem siv cov dej txias lossis cua txias, nrog rau lub hom phiaj ntawm kev ua kom txias ntawm cov hlau kauj sai sai kom tsis txhob cuam tshuam cov qauv thiab kev ua haujlwm ntawm zinc txheej. Passivation yog los txhim kho corrosion kuj ntawm zinc txheej, thiab chromate passivation feem ntau yog siv rau saum npoo.
5. Rewinding thiab ntim
Cov hlau coils tom qab kev kho mob saum toj no tuaj yeem dov thiab ntim. Cov galvanized steel coils tau sau nrog lub tshuab winding thiab tom qab ntawd ntim. Thaum ntim khoom, nws yog ib qho tsim nyog los xyuas kom meej tias cov hlau kauj tsis muaj khawb los yog tsis muaj kab mob, thiab tib lub sijhawm, cov khoom lag luam yuav tsum meej thiab raug.
6. Kev tshuaj xyuas zoo
Thaum lub sij hawm ua cov galvanized steel coils, yuav tsum tau soj ntsuam zoo. Cov ntsiab lus tshuaj xyuas suav nrog qhov tseeb qhov tseeb, qhov zoo ntawm qhov chaw, zinc txheej tuab, thiab lwm yam. Cov ntsuas ntsuas no ncaj qha cuam tshuam rau qhov zoo thiab tiv thaiv corrosion ntawm galvanized steel coils. Tsuas yog cov khoom ua tau raws li cov qauv tuaj yeem raug muag tawm ntawm lub hoobkas.
