1.Superior xeb kuj
Lub hom phiaj tseem ceeb ntawm galvanizing yog kom tsis txhob xeb hauv nws cov lem - thiab qhov ntawd yog qhov chaw zinc oxide txheej ntawm cov hlau galvanized tuaj. Ntawm no yog nws ua haujlwm li cas: zinc txheej corrodes ua ntej, noj cov tsoo kom cov hlau hauv qab nyob twj ywm ntev dua. Yog tias tsis muaj cov ntaub thaiv zinc no, cov hlau yuav nyob deb dua rau xeb, thiab raug los nag, av noo, lossis lwm yam ntuj tsim yuav ua rau kom lwj.
2.Extended Lifespan
Qhov kev ua neej ntev no yog ncaj qha los ntawm kev tiv thaiv txheej. Kev tshawb fawb qhia tau hais tias, nyob rau hauv cov xwm txheej ib txwm, galvanized steel siv nyob rau hauv kev lag luam chaw yuav kav ntev li 50 xyoo. Txawm tias nyob rau hauv ib puag ncig corrosive heev - xav tias qhov chaw uas muaj dej ntau lossis noo noo - nws tseem tuaj yeem tuav tau 20 xyoo lossis ntau dua.
3. Txhim kho kev zoo nkauj
Cov neeg feem coob pom zoo tias cov hlau galvanized muaj qhov zoo nkauj dua li ntau lwm cov hlau alloys. Nws qhov chaw zoo li ci dua thiab huv dua, muab nws zoo li polished.
Qhov twg Galvanized Steel tau siv
Cov txheej txheem sib txawv tuaj yeem siv rau galvanizing:
2. Electro galvanizing
3. Zinc diffusion
4. Hlau txau
Kub-dip galvanized
Thaum lub sij hawm galvanizing txheej txheem, cov hlau yog immersed nyob rau hauv ib tug molten zinc da dej. Kub-dip galvanizing (HDG) muaj peb kauj ruam yooj yim: kev npaj nto, galvanizing, thiab tshuaj xyuas.
Kev npaj nto
Nyob rau hauv cov txheej txheem kev npaj saum npoo, cov hlau pre-fabricated xa mus rau galvanizing thiab ua tiav peb theem tu: degreasing, acid ntxuav, thiab fluxing. Yog tias tsis muaj cov txheej txheem ntxuav no, galvanizing tsis tuaj yeem ua tiav vim zinc yuav tsis hnov mob nrog cov hlau tsis huv.
Galvanizing
Tom qab kev npaj nto tiav lawm, cov hlau yog immersed nyob rau hauv 98% molten zinc ntawm 830 ° F. Lub kaum sab xis uas cov hlau nkag mus rau hauv lub lauj kaub yuav tsum tso cua kom dim ntawm cov duab tubular lossis lwm lub hnab ris. Qhov no kuj tso cai rau cov zinc ntws los ntawm thiab mus rau tag nrho lub cev steel. Nyob rau hauv txoj kev no, zinc tuaj rau hauv kev sib cuag nrog tag nrho cov hlau. Cov hlau hauv cov hlau pib ua rau cov zinc, tsim cov zinc-hlau intermetallic txheej. Nyob rau sab nraud, ib txheej zinc txheej ntshiab yog tso.
Kev tshuaj xyuas
Cov kauj ruam kawg yog los tshuaj xyuas cov txheej txheem. Kev tshuaj xyuas qhov muag yog ua los xyuas seb qhov chaw tsis muaj txheej txheem ntawm lub cev steel, vim tias cov txheej txheem yuav tsis ua raws li cov hlau tsis huv. Ib qho sib nqus tuab ntsuas kuj tuaj yeem siv los txiav txim siab txheej txheej.
2 Electro galvanizing
Electrogalvanized steel yog tsim los ntawm cov txheej txheem electrochemical. Nyob rau hauv cov txheej txheem no, cov hlau yog immersed nyob rau hauv ib tug zinc da dej, thiab ib tug hluav taws xob tam sim no dhau los ntawm nws. Cov txheej txheem no tseem hu ua electroplating.
Ua ntej txheej txheem electrogalvanizing, cov hlau yuav tsum tau ntxuav. Ntawm no, zinc ua raws li anode los tiv thaiv cov hlau. Rau electrolysis, zinc sulfate lossis zinc cyanide yog siv los ua cov electrolyte, thaum lub cathode tiv thaiv cov hlau los ntawm corrosion. Qhov no electrolyte ua rau zinc nyob twj ywm ntawm cov hlau nto li txheej. Qhov ntev ntawm cov hlau yog immersed nyob rau hauv lub zinc da dej, lub thicker lub txheej yuav.
Txhawm rau txhim kho kev tiv thaiv corrosion, qee qhov kev hloov pauv txheej txheej tau zoo heev. Cov txheej txheem no tsim ib txheej ntxiv ntawm zinc thiab chromium hydroxides, uas ua rau lub ntsej muag xiav ntawm cov hlau.
3 Zinc Penetration
Zinc plating koom nrog kev tsim cov zinc txheej ntawm cov hlau los yog hlau kom tiv thaiv kev xeb hlau.
Nyob rau hauv cov txheej txheem no, hlau yog muab tso rau hauv ib lub thawv nrog zinc, uas yog ces muab kaw thiab rhuab mus rau ib tug kub ntawm lub melting point ntawm zinc. Qhov tshwm sim ntawm cov tshuaj tiv thaiv no yog tsim los ntawm zinc-hlau alloy, nrog cov khoom txheej txheej ntawm cov zinc dawb huv adhering rau steel nto thiab muab qhov tseem ceeb corrosion kuj. Cov txheej no kuj ua rau cov xim zoo dua adhesion ntawm qhov chaw.
Rau cov khoom me me, zinc plating yog txoj kev zoo tshaj plaws. Cov txheej txheem no tshwj xeeb tshaj yog tsim rau cov khoom siv hlau tsis sib xws, vim tias txheej txheej txheej tuaj yeem yooj yim ua raws li cov qauv ntawm lub hauv paus hlau.
4 Hlau Txau
Nyob rau hauv cov txheej txheem hlau txau zinc plating, hluav taws xob los yog atomized molten zinc hais yog txau rau ntawm cov hlau. Cov txheej txheem no yog ua los ntawm kev siv rab phom xuas phom los yog nplaim taws tshwj xeeb.
Ua ntej siv cov zinc txheej, tag nrho cov kab mob, xws li cov txheej txheem tsis xav tau, roj, thiab xeb, yuav tsum tau muab tshem tawm. Tom qab cov txheej txheem ntxuav tiav lawm, cov atomized molten zinc particles yog txau rau ntawm qhov chaw ntxhib, qhov uas lawv solidify.
Cov txheej txheem hlau txau txheej no yog qhov tsim nyog tshaj plaws rau kev tiv thaiv tev thiab flaking, tab sis nws tsis yog qhov zoo tagnrho rau kev muab kev tiv thaiv corrosion tseem ceeb.
Lub zinc txheej yuav kav ntev npaum li cas?
Hais txog kev ua haujlwm ntev, nws feem ntau nyob ntawm qhov tuab ntawm zinc txheej, nrog rau lwm yam xws li hom ib puag ncig, hom zinc txheej siv, thiab qhov zoo ntawm cov xim lossis cov tshuaj tsuag txheej. Lub thicker zinc txheej, lub neej ntev dua.
Kub-dip galvanizing vs txias galvanizingKub-dip galvanized txheej yog feem ntau ruaj dua li txias galvanized txheej vim lawv feem ntau tuab thiab muaj zog dua. Kub-dip galvanizing yuav immersing cov hlau nyob rau hauv molten zinc, whereas nyob rau hauv lub txias galvanizing txoj kev, ib los yog ob txheej yog sprayed los yog txhuam rau.
Nyob rau hauv cov nqe lus ntawm durability, kub-dip galvanized txheej yuav kav ntev tshaj 50 xyoo tsis hais txog ntawm ib puag ncig tej yam kev mob. Nyob rau hauv sib piv, txias-dip galvanized txheej feem ntau tsuas kav ob peb lub hlis mus rau ob peb xyoos, nyob ntawm seb cov txheej thickness.
Tsis tas li ntawd, nyob rau hauv ib puag ncig corrosive heev xws li chaw tsim khoom, lub neej ntev ntawm zinc txheej yuav raug txwv. Yog li ntawd, xaiv cov zinc coatings zoo thiab tswj lawv lub sijhawm ntev yog qhov tseem ceeb rau kev tiv thaiv corrosion, hnav, thiab xeb.
Post lub sij hawm: Aug-12-2025
