Hauv ntau qhov chaw xws li kev tsim kho thiab khoom siv hauv tsev, PPGI Steel Coils tau siv dav vim lawv cov xim nplua nuj thiab kev ua haujlwm zoo heev. Tab sis koj puas paub tias nws "predecessor" yog Galvanized Steel Chev? Cov hauv qab no yuav qhia txog cov txheej txheem ntawm yuav ua li cas Galvanized Sheet Coil yog tsim rau hauv PPGI Coil.
1. Nkag siab txog Galvanized Coils thiab PPGI Coils
Galvanized Coils Chaw tsim tshuaj paus txheej txheej coils nrog zinc txheej ntawm qhov chaw, uas feem ntau ua haujlwm rau xeb - pov thawj muaj nuj nqi thiab ncua kev pab cuam lub neej ntawm cov hlau. PPGI steel coils siv galvanized steel coils ua cov substrate. Tom qab ib tug series ntawm kev ua, organic coatings yog siv rau lawv nto. Nws tsis tsuas yog khaws cov xeb - pov thawj cov khoom ntawm galvanized steel coils tab sis kuj ntxiv cov khoom zoo tshaj plaws xws li kev zoo nkauj thiab huab cua tsis kam.
2. Cov kauj ruam ntau lawm rau Galvanized Steel Hoobkas
(1) Pretreatment Txheej Txheem - Degreasing: Qhov saum npoo ntawm galvanized steel coils yuav muaj impurities xws li roj thiab hmoov av. Cov pa phem no raug tshem tawm los ntawm kev daws teeb meem alkaline lossis tshuaj degreasing cov neeg ua haujlwm kom ntseeg tau tias muaj kev sib xyaw zoo dua ntawm cov txheej tom ntej nrog cov substrate. Piv txwv li, kev siv cov tshuaj degreasing uas muaj cov surfactant tuaj yeem ua rau cov roj molecules zoo.
Chemical Conversion Treatment: Feem ntau muaj xws li chromization los yog chromium - kev kho mob dawb passivation. Nws tsim cov yeeb yaj kiab uas nyias nyias ntawm cov txheej txheej galvanized, txhawm rau txhim kho qhov adhesion ntawm substrate thiab cov xim thaum ntxiv kev txhim kho corrosion. Cov yeeb yaj kiab no zoo li "choj", ua kom cov xim zoo sib xws nrog cov galvanized steel kauj.
(2) Painting txheej txheem - primer txheej: cov primer yog siv rau pre-kho galvanized kauj los ntawm txoj kev ntawm cov menyuam txheej los yog lwm txoj kev. Lub luag haujlwm tseem ceeb ntawm primer yog tiv thaiv xeb. Nws muaj cov tshuaj tiv thaiv xeb thiab cov resins, uas tuaj yeem cais cov kev sib cuag ntawm cov dej noo, oxygen, thiab txheej galvanized. Piv txwv li, epoxy primer muaj adhesion zoo thiab xeb kuj.
Topcoat Txheej: Xaiv topcoat txheej ntawm cov xim sib txawv thiab kev ua yeeb yam rau txheej raws li qhov yuav tsum tau ua. Lub topcoat tsis tsuas yog endows PPGI coil nrog nplua nuj xim tab sis kuj muab kev tiv thaiv xws li huab cua tsis kam thiab hnav tsis kam. Piv txwv li, polyester topcoat muaj cov xim ci thiab zoo UV tsis kam, ua rau nws tsim nyog rau kev tsim kho sab nraum zoov. Qee cov xim-coated coils kuj muaj cov xim rov qab los tiv thaiv sab nraum qab ntawm cov substrate los ntawm ib puag ncig yaig.
(3) Baking thiab Curing Cov xim hlau pleev xim rau hauv lub qhov cub ci thiab ci ntawm qhov kub thiab txias (feem ntau yog 180 ℃ - 250 ℃). Qhov kub thiab txias ua rau cov resin nyob rau hauv cov xim muaj ib tug ntoo khaub lig - txuas cov tshuaj tiv thaiv, solidifying rau hauv ib zaj duab xis thiab tsim ib tug ruaj txheej txheej. Lub sij hawm ci thiab qhov kub thiab txias yuav tsum tau tswj kom meej. Yog tias qhov kub thiab txias dhau los yog lub sijhawm tsis txaus, cov xim pleev xim yuav tsis kho kom zoo, cuam tshuam rau kev ua haujlwm; Yog tias qhov kub thiab txias dhau los yog lub sijhawm ntev dhau, cov xim pleev xim yuav tig daj thiab nws qhov kev ua tau zoo yuav poob qis.
(4) Tom qab - ua tiav (xaiv tau) Qee qhov PPGI Steel coils tau dhau los ua haujlwm - ua haujlwm zoo li embossing, laminating, thiab lwm yam tom qab tawm hauv qhov cub. Embossing tuaj yeem ua rau kom muaj kev zoo nkauj ntawm qhov chaw thiab kev sib txhuam, thiab laminating tuaj yeem tiv thaiv txheej txheej thaum thauj thiab ua haujlwm kom tsis txhob khawb.
3. Qhov zoo thiab kev siv ntawm PPGI Steel Coils Los ntawm cov txheej txheem saum toj no, cov galvanized steel kauj tau ua tiav "hloov" rau hauv PPGI coil. PPGI Coil yog ob qho tib si zoo nkauj thiab siv tau. Hauv kev tsim kho, lawv tuaj yeem siv rau sab nrauv phab ntsa thiab lub ru tsev ntawm cov chaw tsim khoom. Nrog ntau yam xim, lawv yog cov ruaj thiab tsis ploj. Nyob rau hauv lub tshav pob ntawm cov khoom siv hauv tsev, xws li cov tub yees thiab cov cua txias - cov khoom cua txias, lawv yog ob qho tib si zoo nkauj thiab hnav - resistant. Nws qhov kev ua tau zoo tshaj plaws ua rau nws tuav txoj haujlwm tseem ceeb hauv ntau qhov kev lag luam. Los ntawm galvanized kauj mus rau PPGI coil, qhov zoo li yooj yim hloov pauv tau suav nrog cov thev naus laus zis thiab cov qauv kev tshawb fawb. Txhua qhov txuas ntau lawm yog qhov tseem ceeb, thiab lawv sib sau ua ke tsim kev ua tau zoo ntawm PPGI coil, ntxiv xim thiab yooj yim rau kev lag luam niaj hnub thiab lub neej.
Post lub sij hawm: May-19-2025