1.Qhov laj thawj tseem ceeb yog vim li cas galvanized txheej tuaj yeem tiv thaiv xeb?
Lub cev thaiv kev ua haujlwm: cais cov hlau substrate los ntawm ib puag ncig sab nraud.
Cathode kev tiv thaiv muaj nuj nqi: Zinc yog ntau reactive dua hlau. Thaum cov txheej txheej puas lawm, zinc ua raws li cov anode, nyiam corroding thiab yog li tiv thaiv cov hlau, uas ua raws li cathode.
Kos rhuav tshem qhov kev tiv thaiv no. Txias galvanizing txheej muaj ib tug siab concentration ntawm zinc hmoov (feem ntau tshaj 90% zinc nyob rau hauv qhuav zaj duab xis). Tom qab ntawv thov, cov zinc hmoov cov khoom no tsim cov yeeb yaj kiab uas siv hluav taws xob txuas mus rau cov txheej txheem qub galvanized thiab cov hlau uas muaj cov substrate, re- tsim kom muaj kev tiv thaiv cathodic.
2.Yuav ua li cas los txhim kho qhov zoo ntawm kev kho deg?
Ntxuav thiab Degreasing: Siv cov tshuaj ntxuav hlau tshwj xeeb lossis cov kuab tshuaj (xws li acetone) kom huv si tshem cov roj, plua plav, thiab noo noo los ntawm khawb thiab ib puag ncig.
Sib tsoo:
Lub hom phiaj: Txhawm rau tshem tawm cov zinc plating, cov oxides uas twb muaj lawm, lossis xeb dawb los ntawm khawb, nthuav tawm cov hlau tshiab, ci ntsa iab ntawm cov hlau substrate. Qhov no yog ib qho tseem ceeb heev rau kev ua kom muaj qhov adhesion ntawm zinc- nplua nuj txheej.
Cov cuab yeej: Rau cov kab kos, lub kaum sab xis nrog lub khob- zoo li tus txhuam hlau los yog ntawv xuab zeb yog qhov zoo tshaj.
Scope: Qhov chaw sib tsoo yuav tsum yog me ntsis dav dua qhov khawb nws tus kheej, txuas ntxiv kwv yees li 10-20 hli mus rau hauv cov txheej txheem galvanized nyob rau ob sab, tsim kom muaj kev hloov chaw du.
Kev Ntxuav Ntxiv: Ua tib zoo tshem cov hmoov av uas siv cov cua compressed los yog ib daim ntaub huv.
3.Yuav ua li cas xaiv cov khoom kho kom raug?
"Cov xim txias galvanizing" lossis "galvanizing kho tus neeg saib xyuas" yuav tsum tau siv, tsis yog xeb zoo tib yam -cov xim tiv thaiv.
Cov yam ntxwv: Cov khoom no yog ib qho -cov khoom lossis ob- cov khoom, nplua nuj nyob hauv zinc hmoov, thiab feem ntau grey tom qab qhib lub kaus poom.
Daim ntawv: Muaj nyob rau hauv txhuam thiab tshuaj tsuag hom.
Txhuam hom: Ntau qhov tsim nyog rau qhov dav, qhov sib sib zog nqus khawb, tso cai rau cov txheej tuab dua hauv ib daim ntawv thov.
Tshuaj tsuag tuaj yeem hom: Haum rau kev nplua, khawb khawb, yooj yim rau kev kho, thiab ua kom nyias nyias, ntau txheej txheej.
4.Dab tsi yog cov kauj ruam hauv kev pleev xim?
Do kom huv si: Zinc hmoov nyob rau hauv zinc- nplua nuj txheej zoo li khom, yog li nws yuav tsum tau muab sib xyaw ua ntej siv.
Daim ntawv thov:
Siv txhuam los yog tshuaj tsuag kom sib npaug ntawm cov txheej txheem rau qhov chaw npaj.
Xyuas kom cov txheej txheem npog tag nrho cov hlau raug thiab polished galvanized txheej.
Rau cov txiaj ntsig zoo tshaj plaws, tsawg kawg yog ob lub tsho loj feem ntau yuav tsum tau. Xa mus rau cov lus qhia khoom rau lub caij nyoog ntawm cov tsho loj.
Ua tiav cov tuab txaus: Cov zaj duab xis qhuav tuab ntawm cov txheej kho kho yuav tsum nyob ze li qhov ua tau rau lub thickness ntawm thawj kub-dip galvanized txheej. Qhov kawg txheej yuav tsum muaj ib tug uniform grey metallic sheen.
5.Dab tsi yog cov ntsiab lus tseem ceeb uas yuav tsum nco ntsoov?
Tsis txhob npog ncaj qha: Tsis txhob pleev xim ncaj qha mus rau qhov tsis kho qhov khawb. Txwv tsis pub, cov xim yuav npog cov txheej oxide xoob, uas ua rau tsis zoo rau adhesion, thiab sab hauv corrosion yuav txuas ntxiv mus, ua rau cov txheej txheej blister thiab tev tawm sai sai.
Kev ua tau zoo sib txawv: Kho txias txias-dip galvanized txheej tsis muaj tib lub zog sib txuas thiab ua haujlwm ntev raws li qhov qub kub-dip galvanized txheej, tab sis nws yog qhov zoo tshaj plaws thiab kev siv nyiaj tsis muaj re-kub-dip galvanizing.
Rau kev thauj khoom-cov qauv kabmob: Yog tias cov galvanized coils tau siv los ntawm kev thauj khoom tseem ceeb-cov kabmob xws li cov choj ntab uas koj tau hais dhau los, kev kho khawb yuav tsum nruj dua. Nws raug nquahu kom ua raws li cov txheej txheem txheej txheem uas tau piav qhia saum toj no, thiab yog tias tsim nyog, txawm tias siv epoxy intermediate tsho tiv no thiab polyurethane topcoat rau kev tiv thaiv ntxiv.