1. Kub-dip galvanized steel phaj
Noj mus rau hauv tus account yam xws li cov txheej txheem ntau lawm ntawmkub-dip galvanized steel ntawvthiab cov khoom ntim tiav, cov ntawv kub-dip galvanized steel tuaj yeem muaj cov nram qab no tsis xws luag:
(1) Qhov tsis zoo ntawm tag nrho pawg thawj coj saib
Deg tsis xws luag ntawm kub sib sib zog nqus Galvanizing panels, xws li wrinkles, dents, wavy npoo, thiab lwm yam., yuav txuas ntxiv mus rau lub galvanized panels thiab ua rau nto defects. Yog li ntawd, cov neeg ua haujlwm yuav tsum sim tag nrho lub rooj tsavxwm ua ntej tsim khoom.
(2) Cov xim dub
a. Lub purity ntawm Kub Deep Galvanizing txheej yog tsis txaus, thiab cov hlau residues tsim galvanic cov tshuaj tiv thaiv nyob rau saum npoo ntawm zinc. Thaum nws muaj txiaj ntsig zoo rau hydrogen evolution, nws yog ib qho yooj yim ua rau cov pob dub nyob rau saum npoo ntawm zinc txheej.
b. Thaum tooj liab, hlau, arsenic thiab lwm yam residues nyob rau hauv kub-dip galvanizing txheej yog siab nyob rau hauv cov ntsiab lus, cov residues yuav tshwm dub tom qab passivation.
c. Lub corrosion ntawm tag nrho cov phaj yog tsis txaus daws, uas ua rau cov av nkos, uas ua rau qee qhov chaw tsis tuaj yeem galvanized, ua rau muaj teeb meem nrog cov kub-dip galvanized txheej thiab yooj yim poob tawm, ua rau cov pob dub.
d. Plating ploj lawm tshwm sim thaum kub-dip galvanizing, thiab nws yog ib qho yooj yim heev los tsim cov dub me ntsis thaum lub sij hawm tom qab txheej txheem.
e. Cov tshuaj kub-dip galvanizing yog tov nrog sediment los yog me me tshauv (carbon los yog carbon tshuaj), uas adheres rau saum npoo ntawm zinc txheej los yog nyob rau hauv lub zinc txheej, thiab muaj zog integrated nrog zinc txheej. Cov pob dub tuaj yeem pom ntawm daim ntawv tiav galvanized.
f. Erosion black spots. Ua los ntawm kev ua haujlwm ntxhib thaum lub sijhawm thauj mus los thiab sib sau ua ke.
(3) Dawb xeb
Thaum cov dej noo rov qab los rau saum npoo ntawm daim ntawv galvanized lossis nag lossis daus nkag mus rau hauv nws, ntawm qhov kub thiab txias, zinc yog oxidized thiab hloov mus ua hmoov dawb. Lub peev xwm los tiv thaiv corrosion ntawm txheej txheej los ntawm cov xeb dawb yog txo qis heev, cuam tshuam rau kev siv.
(4) Cov txheej kub-dip galvanized tsis sib xws
Cov zinc txheej ntawm cov ntawv galvanized yog tsis sib luag, tsis sib xws hauv cov tuab, thiab txawm tias me me ntawm qhov chaw tshwm. Muaj cov kua zinc uas tsis tsim nyog rau ntawm qhov chaw ntawm cov hlau kub dov los ntawm lub lauj kaub galvanizing. Cov kua zinc uas tsis tsim nyog no tau muab pov tseg nrog lub demister (high-pressure gas txhaj) los tswj lub thickness ntawm zinc txheej. Cov huab cua siab ntawm demister, qhov kev ncua deb ntawm lub demister thiab kub dov strip, ceev ntawm cov kub dov strip, thiab lwm yam yuav ncaj qha cuam tshuam lub thickness ntawm zinc txheej. Yog hais tias txoj kev huab cua ntawm lub demister tsis ruaj khov los yog kev ua hauj lwm siab ntawm lub demister tsis txaus, nws yuav ua rau lub deposition ntawm kub-dip galvanized txheej, uas yog, zinc caws pliav.
(5) Vuam flash
Muaj sediment los yog sludge (hlau los yog non-metallic impurities) nyob rau hauv lub kub-dip galvanizing tov. Qee zaum qhov vuam nodule yog sib xyaw hauv cov txheej kub-dip galvanizing. Shanghai qauv nkoj qauv kev lag luam qauv kev lag luam qauv siv Circular dub me ntsis tshwm rau saum npoo, thiab txawm tias tag nrho cov phaj tsis tuaj yeem stained nrog zinc, uas tuaj yeem yooj yim ua rau hlau me ntsis.
(6) Kos thiab abrasions, thiab lwm yam.
Thaum cov ntawv galvanized coils dhau los ntawm kev txhawb nqa lub tshuab ncaj, cov av ntawm lub tshuab straightening ua rau khawb thiab abrasions ntawm qhov chaw.
(7) Chromic acid stains
Txhawm rau txhim kho corrosion kuj ntawm galvanized steel los xij, txheej txheej nyias nyias yog tsim los ntawm cov ntawv kub dov steel, uas tuaj yeem ua tiav los ntawm kev kho chromic acid, uas yog, kev kho chromation. Txawm li cas los xij, yog tias chromic acid tsis kho kom zoo thiab muaj cov kua dej seem, lub teeb daj los yog stains, lossis txawm tias cov pob dub, yuav tshwm sim rau ntawm daim ntawv galvanized.
