Xov xwm

Kub dip galvanizing, tseem hu ua kub dip galvanizing thiab kub dip galvanizing, yog ib txoj kev zoo ntawm cov hlau tiv thaiv corrosion, feem ntau yog siv rau cov qauv hlau thiab cov chaw hauv ntau yam lag luam.Nws yog txhawm rau muab cov hlau derusted nyob rau hauv molten zinc ntawm li 500 ℃ kom ua raws li zinc txheej rau saum npoo ntawm cov hlau, yog li ua tiav lub hom phiaj ntawm kev tiv thaiv corrosion.Kub dip galvanizing txheej txheem ntws: tiav cov khoom pickling - dej ntxuav - ntxiv auxiliary plating tov - ziab - dai plating - txias - tshuaj - ntxuav - polishing - tiav ntawm kub dip galvanizing 1. Kub dip galvanizing yog tsim los ntawm cov laus kub dip galvanizing txoj kev. , thiab muaj keeb kwm ntawm ntau tshaj 170 xyoo txij li thaum Fabkis tau siv kub dip galvanizing rau kev lag luam hauv xyoo 1836. Peb caug xyoo dhau los, nrog rau kev loj hlob sai ntawm txias dov strip steel, kub dip galvanizing kev lag luam tau tsim nyob rau hauv loj teev.
Kub dip galvanizing, tseem hu ua kub dip galvanizing, yog ib txoj hauv kev kom tau txais cov hlau txheej ntawm cov khoom siv hlau los ntawm immersing lawv hauv molten zinc.Nrog rau kev loj hlob sai ntawm high-voltage fais fab kis tau tus mob, kev thauj mus los, thiab kev sib txuas lus, cov kev cai rau kev tiv thaiv ntawm steel qhov chaw yog nce siab, thiab qhov kev thov rau kub dip galvanizing kuj nce.

Kev tiv thaiv kev ua haujlwm
Feem ntau, lub thickness ntawm galvanized txheej yog 5 ~ 15 μ m.Cov txheej kub-dip galvanized feem ntau yog nyob ntawm 35 μ Saum toj m, txawm tias mus txog 200 μ m. Kub dip galvanizing muaj peev xwm npog zoo, tuab txheej, thiab tsis muaj cov organic inclusions.Nws paub zoo tias cov txheej txheem ntawm zinc tsis kam rau atmospheric corrosion muaj xws li kev tiv thaiv txhua yam thiab kev tiv thaiv electrochemical.Nyob rau hauv atmospheric corrosion tej yam kev mob, lub nto ntawm zinc txheej muaj ZnO, Zn (OH) 2, thiab yooj yim zinc carbonate tiv thaiv zaj duab xis, uas rau qee qhov qeeb ntawm corrosion ntawm zinc.Yog tias cov yeeb yaj kiab tiv thaiv no (tseem hu ua xeb dawb) puas lawm, nws yuav tsim cov txheej txheem zaj duab xis tshiab.Thaum cov zinc txheej raug mob hnyav heev thiab ua rau muaj kev phom sij rau cov hlau substrate, zinc muab kev tiv thaiv electrochemical rau lub substrate.Tus qauv peev xwm ntawm zinc yog -0.76V, thiab tus qauv peev xwm ntawm hlau yog -0.44V.Thaum zinc thiab hlau tsim lub micro roj teeb, zinc yog yaj raws li cov anode, thiab hlau yog tiv thaiv raws li cathode.Obviously, atmospheric corrosion kuj ntawm kub dip galvanizing ntawm lub hauv paus hlau hlau yog zoo dua li ntawm electrogalvanizing.
Zinc txheej txheej txheej txheem
Kev tsim cov txheej txheem kub dip galvanized txheej yog txheej txheem ntawm kev tsim cov hlau zinc alloy ntawm cov hlau substrate thiab cov zinc txheej ntshiab sab nraum Z. Cov hlau zinc alloy txheej yog tsim rau saum npoo ntawm lub workpiece thaum kub dip plating, uas tso cai rau kev sib xyaw ua ke zoo ntawm cov hlau thiab cov zinc txheej ntshiab.Cov txheej txheem tuaj yeem piav qhia yooj yim raws li hauv qab no: Thaum cov hlau ua haujlwm yog immersed nyob rau hauv cov kua zinc molten, zinc thiab zinc yog thawj zaug tsim ntawm lub interface α Hlau (lub cev core) khoom yaj.Qhov no yog siv lead ua tsim los ntawm dissolving zinc atoms nyob rau hauv cov khoom ntawm lub hauv paus hlau hlau.Ob lub atoms hlau yog fused, thiab qhov attraction ntawm cov atoms yog me me.Yog li ntawd, thaum zinc ncav cuag saturation nyob rau hauv cov khoom yaj, ob lub ntsiab atoms ntawm zinc thiab hlau diffuse nrog ib leeg, thiab zinc atoms diffused rau hauv (los yog infiltrated rau hauv) cov hlau matrix migrate nyob rau hauv lub matrix lattice, maj mam tsim ib tug alloy nrog hlau. Thaum cov hlau thiab zinc diffused mus rau hauv cov kua zinc molten los ntawm high-strength steel tsim ib qho intermetallic compound FeZn13, uas nkag mus rau hauv qab ntawm lub lauj kaub kub galvanizing, tsim zinc slag.Thaum lub workpiece raug tshem tawm los ntawm zinc dipping tov, ib tug ntshiab zinc txheej yog tsim rau saum npoo, uas yog hexagonal siv lead ua.Nws cov ntsiab lus hlau tsis ntau tshaj 0.003%.
Kev sib txawv
Qhov corrosion kuj ntawm kub galvanizing yog ntau dua li ntawm txias galvanizing (tseem hu ua galvanization).Kub galvanizing yuav tsis xeb nyob rau hauv ob peb xyoos, thaum txias galvanizing yuav xeb nyob rau hauv peb lub hlis.
Cov txheej txheem electrogalvanizing yog siv los tiv thaiv cov hlau los ntawm corrosion."Yuav muaj cov txheej txheem hlau tiv thaiv zoo ntawm cov npoo thiab qhov chaw ntawm cov khoom, uas ntxiv qhov zoo nkauj rau kev ua tau zoo.Niaj hnub no, cov lag luam loj tau nce siab rau cov khoom siv thiab cov cuab yeej technology, yog li nws yuav tsum tau hloov kho thev naus laus zis ntawm theem no. "