Prepainted Galvalume Coil, tseem hu ua Ppgl Coil lossis Ppgl Steel Coil, yog ib qho khoom siv tseem ceeb rau kev tsim cov phab ntsa ntaub thaiv, cov khoom siv hauv tsev, thiab kev thauj mus los txias. Nws qhov kev tiv thaiv corrosion cuam tshuam rau cov khoom lub neej kev pabcuam, tus nqi txij nkawm, thiab kev nyab xeeb. Hauv cov chaw nyuaj xws li thaj chaw marine thiab thaj chaw muaj kuab paug hauv kev lag luam, nrhiav txoj hauv kev los txhawb qhov kev tiv thaiv corrosion ntawm Ppgl Steel yog qhov kev txhawj xeeb loj hauv kev lag luam. Tsab xov xwm no muab tsib txoj hauv kev muaj txiaj ntsig raws li kev siv tiag tiag hauv ntiaj teb.
I. Ua kom cov khoom siv hauv pem teb zoo dua: Kev pib zoo rau kev tiv thaiv xeb
Qhov kev tiv thaiv corrosion ntawm Ppgl Steel nyob ntawm nws cov substrate, lub aluminized zinc - plated substrate (Galvalume Coil).
1. Tswj Cov Txheej Txheem: Cov Hlau Ppgl Zoo xav tau qhov sib xyaw ua ke ntawm txhuas (55%), zinc (43.4%), thiab silicon (1.6%). Silicon pab tsim ib txheej alloy thiab tiv thaiv cov txheej zinc los ntawm kev tev tawm. Cov txheej txheem aluminiumized zinc yuav tsum muaj tsawg kawg yog 120 g / m² (ob sab). Hauv cov chaw ntug dej hiav txwv uas muaj corrosive heev, nws tuaj yeem tshaj 150 g / m² los tsim ib txheej tiv thaiv muaj zog.
2. Xaiv Ib Lub Substrate Huv Si: Lub Ppgl Steel substrate yuav tsum muaj cov khoom tsis huv xws li carbon thiab sulfur tsawg. Qhov no txo ​​cov qhov tsis zoo me me thiab tiv thaiv kev xeb los ntawm kev pib. Nws zoo dua los siv cov aluminized zinc - plated substrates uas ua tau raws li ASTM A792 tus qauv los txo qhov kev pheej hmoo ntawm kev xeb.
II. Ua ntej kho qhov chaw zoo: Txhim kho kev nplaum ntawm txheej
Qhov kev nplaum ntawm Prepainted Galvalume Steel Coil cuam tshuam rau nws txoj kev tiv thaiv corrosion. Kev kho ua ntej ntawm qhov chaw yog qhov tseem ceeb heev:
1. Ntxuav hauv Peb Kauj Ruam: Cov khoom siv yuav tsum tau ntxuav nrog alkaline kom tshem tawm cov roj, ntxuav nrog acid kom tshem tawm xeb, thiab yaug kom tsis txhob muaj xeb. Qhov no ua kom qhov chaw huv si thiab tiv thaiv "kev xeb sib xyaw" ntawm cov txheej thiab cov khoom siv.
2. Txhim Kho Kev Siv Passivation: Siv chromate passivation lossis chromium - free passivation (uas zoo dua rau ib puag ncig). Qhov no tsim cov zaj duab xis passivation sib xws ntawm Galvalume Steel Coil substrate. Nws pab cov txheej txheem lo zoo dua thiab thaiv cov tshuaj corrosive.
3. Ziab Kom Zoo: Tom qab kho ua ntej lawm, ziab lub substrate sai sai. Khaws cov dej noo ntawm qhov chaw kom qis dua 0.1% kom tiv thaiv kev xeb.

III. Xaiv Cov Txheej Txheej Uas Yog: Tsim Kev Tiv Thaiv Ntau Txheej
Lub txheej yog qhov kev tiv thaiv tseem ceeb rau Coil Ppgl. Thaum xaiv lub txheej txheej, xav txog kev tiv thaiv huab cua, kev tiv thaiv tshuaj lom neeg, thiab kev nplaum:
1. Xaiv Cov Tshuaj Pleev Xim: Cov tshuaj pleev xim epoxy zoo vim lawv lo zoo thiab thaiv cov tshuaj corrosive. Rau cov xwm txheej uas xav tau ntau, siv cov tshuaj pleev xim polyurethane kom cov txheej txheem yooj ywm dua thiab tiv taus cov tshuaj tsuag ntsev.
2. Xaiv Cov Tshuaj Pleev Xim Sab Saum Toj: Xaiv cov tshuaj pleev xim uas tiv taus huab cua.
– Rau ib puag ncig ib txwm: Cov tsho tiv no polyester uas tiv taus huab cua zoo yog qhov kev xaiv zoo. Lawv tiv taus UV thiab kev laus zoo thiab tsis kim heev.
– Rau cov chaw nyob nyuaj (xws li thaj chaw dej hiav txwv lossis chaw ua haujlwm): PVDF (polyvinylidene fluoride) cov xim pleev sab saud zoo tshaj plaws. Lawv tiv taus huab cua thiab tshuaj lom neeg thiab tuaj yeem kav ntev tshaj 20 xyoo.
3. Tswj Qhov Tuab Ntawm Cov Xim Txheej: Cov xim pleev xim thawj zaug yuav tsum tuab 5 – 7μm, cov xim pleev sab saud yuav tsum tuab 15 – 20μm. Tag nrho cov tuab ntawm cov xim txheej yuav tsum tsawg kawg yog 25μm kom tsis txhob muaj teeb meem xws li cov qhov me me.
IV. Ua raws li Kev Tsim Khoom Zoo thiab Kev Teeb tsa: Tsis txhob xeb los ntawm kev ua yuam kev
Txawm tias zoo Prepainted Galvalume Coil tuaj yeem poob nws txoj kev tiv thaiv corrosion yog tias nws tau ua tiav tsis raug:
1. Tswj cov txheej txheem txheej: Siv cov txheej txheem dov kom ua rau txheej txheej sib npaug. Khaws qhov kub ntawm 230 - 250 ℃ rau 30 - 60 vib nas this. Qhov no tiv thaiv cov txheej kom tsis txhob tawg yooj yim.
2. Tiv thaiv thaum lub sijhawm teeb tsa:
– Tsis txhob khawb qhov chaw ntawm PPGL Coil. Kho cov khawb nrog cov xim kho tshwj xeeb tam sim ntawd.
- Tso cov pob qij txha kom nthuav dav thaum teeb tsa kom tiv thaiv cov txheej kom tsis txhob tawg vim qhov kub hloov pauv.
– Nyob rau ntawm ntug dej hiav txwv lossis thaj chaw noo noo, siv cov khoom siv hlau tsis xeb kom tsis txhob muaj xeb los ntawm ntau yam hlau sib txawv kov.
V. Tswj Xyuas Tsis Tu Ncua: Ua kom lub kauj kav ntev dua
Kev saib xyuas tsis tu ncua tuaj yeem ua rau qeeb qeeb xeb, tshwj xeeb tshaj yog rau sab nraum zoov Galvalume Steel Coil:
1. Ntxuav Ntau Zaus: Ntxuav lub kauj nrog dej lossis cov tshuaj ntxuav tsis muaj zog tsawg kawg 1 - 2 zaug hauv ib xyoos. Qhov no tshem tawm cov hmoov av, ntsev, thiab lwm yam av uas tuaj yeem ua rau xeb.
2. Kho Qhov Kev Puas Tsuaj Sai Sai: Yog tias muaj qhov khawb lossis kev puas tsuaj rau lub txheej, siv cov xim kho kom zoo sib xws tam sim ntawd kom tiv thaiv cov tshuaj corrosive kom tsis txhob mus txog lub substrate.
3. Cais tawm ntawm Ib puag ncig: Rau cov kauj nyob ze ntawm cov kua qaub lossis alkali lossis ntawm hiav txwv, siv cov teeb meem tiv thaiv lossis cov txheej txheem los txo kev sib cuag nrog cov tshuaj corrosive.