Electroplating tu txheej txheem rau hluav taws xob cua sov raj
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Electroplating tu txheej txheem rau hluav taws xob cua sov raj
Kev ntxuav feem ntau suav nrog alkaline txhuam thiab electrolytic degreasing, uas tuaj yeem tshem tawm cov impurities xws li cov ntaub ntawv hlau thiab cov roj stains rau saum npoo ntawm cov ntawv txias txias. Nws yog ib qho tseem ceeb rau kev tsim cov khoom siv galvanized nrog cov khoom zoo thiab cov txheej txheem adhesion. Kev tu vaj tse ntawm lub tsev tshiab tsim kub-dip galvanizing nyob rau hauv ib lub Hoobkas muaj xws li alkaline immersion ntxuav, alkaline txhuam, electrolytic tu, dej kub txhuam, dej kub yaug, ntxuav thiab ziab, uas tuaj yeem tswj tag nrho cov nyiaj seem ntawm cov roj thiab cov pa roj carbon. nyob rau saum npoo ntawm cov sawb hlau kom qis dua 20mg / m2 (ib sab), ua tau raws li qhov yuav tsum tau ua rau kev tu zoo ntawm kub-dip galvanized tsheb sab nrauv panels. Tsis tas li ntawd, txhuam cov menyuam nrog SiO2 abrasive hais yog siv los zom cov nplais ntawm cov sawb hlau thaum ntxuav, Nws tuaj yeem txhim kho qhov adhesion ntawm GA khoom txheej. Qee tus neeg kuj hais tias yav tom ntej txoj kev loj hlob ntawm kev tu ntu yuav tsum yog los tsim thiab siv ultrasonic tu los yog siab-siab tu lug siv nyob rau hauv lwm yam teb. Txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau tshem tawm, nws yuav tsum tau ua tib zoo saib xyuas qhov huv huv ntawm cov sawb hlau, No. Ntxiv nrog rau qhov kev tu ib txwm ua ntej lub voj voog inlet, cov hlau sawb inlet thiab qhov hluav taws xob loops tau ua raws li kev ntxuav electrolytic. Cov ntu tu feem ntau yog teem rau pem hauv ntej ntawm lub voj inlet los yog tom qab lub voj inlet kom ua tiav qhov kev ceev ceev tas li.
Txhawm rau daws cov teeb meem ntawm ntau lub plating plating cov ntsiab lus tsis zoo, txheej txheej tsis zoo, thiab qhov tsis zoo ntawm qhov ua kom zoo los ntawm Si cov ntsiab lus hauv cov phaj qub thaum lub sij hawm nruam kub dip galvanizing txheej txheem ntawm kub dov steel sawb, South Kauslim lub tuam txhab Puhang Hlau thiab hlau tau tsim. txheej txheem hu ua acid dawb kub dov steel strip nruam kub dip galvanizing, uas txhais tau hais tias cov kub dov steel sawb ncaj qha nkag mus rau hauv qhov txo qhov cub tsis muaj kua qaub ntxuav, thiab qhov kub ntawm qhov txo qhov cub yog nce mus rau 650-750 degree , thiab cov Lub sij hawm rwb thaiv tsev tau nce mus rau 120-400 vib nas this, Ua kom cov ntsiab lus hydrogen ntawm cov roj tiv thaiv ntau tshaj 10 feem pua. Nyob rau hauv cov xwm txheej no, kub dov steel strips tsim cov kab nrib pleb thiab qhov hws vim kev nthuav dav ntawm cov hlau oxide nplai. Hydrogen gas tuaj yeem nkag mus los ntawm cov kab nrib pleb thiab qhov hws, hloov cov oxide nplai rau hauv cov txheej ntxeem tau tsim los ntawm cov ntshiab Fe thiab FeO. Thaum lub sij hawm kub dip galvanizing, txheej ntxeem tau no tuaj yeem txhawb qhov diffusion ntawm zinc thiab txhuas, ua ib qho softer Fe-Al-Zn alloy txheej, yog li txhim kho cov adhesion ntawm txheej thiab tshem tawm cov chaw tsis nco qab.
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