1.Yuav ua li cas nrog me ntsis khawb (tsuas yog cov zinc txheej saum npoo puas, lub hauv paus hlau tsis raug)?
Kev kho mob Passivation
Haum rau: khawb me me heev, feem ntau los tiv thaiv cov xeb dawb los ntawm kev ua rau khawb nws tus kheej.
Txoj kev: Siv ib qho tshwj xeeb chromium- dawb zinc passivation tov. Muab cov ntaub mos muag los yog txhuam rau hauv nws thiab siv nws sib npaug rau qhov chaw khawb thiab ib puag ncig. This will re-form a dense passivation film on the zinc surface, slowing corrosion.
Qhov zoo: Yooj yim thiab qis - nqi.
Disadvantages: Tsis sau cov khawb thiab tsis zoo ntawm khawb tob.
Siv ib qho tshwj xeeb xeb inhibitor / tiv thaiv tus neeg sawv cev
Haum rau: me me khawb yuav tsum muaj kev tiv thaiv ntau dua li passivation.
Txoj Kev: Siv cov khoom lag luam muaj "galvanized kho cwj mem" lossis "zinc soldering cwj mem," uas muaj zinc- nplua nuj txheej. Thov ncaj qha rau qhov kos.
Qhov zoo: Yooj yim thiab ceev, muab qee qhov kev tiv thaiv electrochemical.
2.Yuav ua li cas nrog kev khawb me ntsis (cov zinc txheej yog khawb thiab cov hlau puag yog raug)?
Kho nrog Zinc - Cov xim nplua nuj (Feem ntau thiab siv tau zoo)
Haum rau: Feem ntau khawb thiab scuffs qhov twg cov substrate raug.
Txoj kev:
Kev Tu Nto: Ua ntej, kom tshem tawm cov roj, impurities, thiab cov oxides uas twb muaj lawm (xeb liab) los ntawm qhov chaw khawb nrog cov kuab tshuaj (xws li cawv lossis acetone). Maj mam xuab zeb nrog cov ntawv xuab zeb zoo yog tias tsim nyog.
Txheej: Siv txias -dip galvanizing xim lossis zinc- nplua nuj primer. Cov xim no muaj cov ntsiab lus siab ntawm zinc hmoov (feem ntau tshaj 90%) thiab tsim cov zinc zaj duab xis thaum ziab.
Nws ua haujlwm li cas: Cov yeeb yaj kiab zinc no, zoo li cov txheej txheem zinc qub, muab kev tiv thaiv cathodic (sacrificial anode) rau steel substrate. Cov zinc hmoov corrodes nyiam dua, yog li tiv thaiv cov hlau.
Xim Kho
Daim ntawv thov tsim nyog: qhov twg kev tiv thaiv corrosion tsis tshua xav tau tab sis qhov zoo ib yam yog qhov tseem ceeb.
Txoj kev: Ua ntej, siv zinc-nplua nuj primer rau kev tiv thaiv corrosion, ces siv lub topcoat ntawm cov xim uas zoo sib xws rau cov galvanized coil.
Qhov zoo: Muab kev txhim kho tseem ceeb hauv qhov tsos.
Qhov tsis zoo: Yog tias cov txheej txheem topcoat tsis tiav lossis puas, kev tiv thaiv corrosion yuav raug txo.
3.Yuav ua li cas nrog kev khawb loj heev (qhov tob thiab dav, lossis khawb qhov chaw loj)?
Kev Kho Vuam Kev Kho (tsis tshua muaj, muaj kev txawj ntse)
Haum rau: Cov teeb meem sib sib zog nqus heev lossis cov xwm txheej tsis tshua xav tau kev txhim kho cov txheej txheem.
Txoj kev: Gas los yog arc vuam nrog zinc alloy electrodes los sau qhov chaw puas nrog zinc.
Ceeb Toom: Cov txheej txheem no ua rau muaj cov pa phem zinc oxide ntau ntau thiab yuav tsum tau ua los ntawm cov neeg ua haujlwm tsim nyog nyob rau hauv qhov cua thiab tiv thaiv. Nws feem ntau tsis pom zoo.
Hloov lossis Downgrade
Los ntawm kev tswj kom zoo thiab tus nqi saib, rau qhov tsis zoo coils pom thaum lub sij hawm cov kab ntau lawm lossis cov txheej txheem decoiling, qhov kev lag luam zoo tshaj plaws yuav yog cim qhov tsis xws luag thiab txo qis rau kev siv, lossis tshem tawm qhov tsis xws luag.
4.Yuav ua li cas tiv thaiv khawb?
Thaum lub sij hawm nqa, thauj, uncoiling, ua, thiab cia ntawm galvanized coils, thov nco ntsoov cov hauv qab no:
Siv cov cuab yeej nqa tsim nyog (xws li lub siab C- nuv) kom tsis txhob muaj kev sib cuag ncaj qha nrog txoj hlua hlau.
Khaws cov khoom siv chais thiab phau ntawv qhia kom huv si thiab tiaj tus, tsis muaj cov khoom tawv xws li vuam slag thiab hlau filings.
Cov neeg ua haujlwm yuav tsum ua lawv txoj haujlwm raws li tus qauv tsim kom tsis txhob khawb los ntawm cov khoom tawv.
5.Qhov kev kho dua tshiab puas tuaj yeem ua kom zoo li qub zoo li qub galvanizing?
Tsis muaj txoj kev kho tuaj yeem ua tiav qhov zoo tshaj plaws ntawm cov txheej txheem qub galvanized. Nws lub hom phiaj yog txhawm rau tiv thaiv kev xeb ntxiv (xeb liab) ntawm thaj chaw khawb thiab txhim kho cov tsos rau qee yam.