Prepainted Galvalume (PPGL) Coil: Cov lus nug nquag nug

Dab tsi yog PPGL Coil

PPGL stands rau prepainted galvalume steel: ib tug txias - dov steel coil coated nrog ib tug 55% txhuas-zinc alloy (galvalume) txheej thiab ces pleev xim rau ntawm ib tug nruam xim kab. Lub galvalume txheej yog tsim los ntawm kwv yees li 55% aluminium, 43.5% zinc thiab 1.5% silicon. Cov ntsiab lus ntawm txhuas muab cov txheej txheem nws ntev - lub sij hawm corrosion kuj thiab kub reflectivity, thaum lub zinc muab galvanic tiv thaiv ntawm txiav npoo thiab khawb. Cov xim pleev xim ntxiv xim, thaiv kev tiv thaiv thiab formability, yog li PPGL yog dav siv rau vov tsev, phab ntsa cladding, khoom siv hauv tsev thiab cov qauv profiles.

PPGL vs PPGI: Qhov txawv yog dab tsi

PPGI yog prepainted galvanized steel, qhov twg lub substrate yog kub -dip galvanized (zinc) txheej. PPGL siv lub galvalume (aluminium-zinc) substrate. Cov tswv yim sib txawv ua raws li los ntawm substrate:

Corrosion resistance: cov txhuas hauv cov galvalume txheej muab kev ua haujlwm zoo dua ntev -lub sij hawm tiv thaiv nyob rau hauv feem ntau atmospheric tej yam kev mob, tshwj xeeb tshaj yog nyob rau hauv industrial thiab ntug dej hiav txwv ib puag ncig.

Thaum tshav kub kub reflectivity: cov ntsiab lus txhuas muaj kev cuam tshuam ntau lub hnub ci, ua kom lub tsev txias dua thiab txo cov thermal expansion stress.

Thaum tshav kub kub tsis kam: galvalume tiv taus qhov kub thiab txias ua ntej discoloration dua li cov xim zinc txheej.

Kev pab lub neej: PPGL feem ntau muab kev saib xyuas ntev dua - lub neej dawb dua li PPGI rau tib cov txheej txheej tuab.

Nqe: PPGL feem ntau raug nqi li ntawm 2-3% ntau dua li cov khoom sib npaug PPGI, uas yog tus nqi me me tiv thaiv lub neej ntev kev pab cuam.

Txiav ntug: zinc- cov coatings nplua nuj muaj kev tiv thaiv galvanic ntawm ntug; aluminium-zinc txheej muab qhov sib txawv tab sis muaj txiaj ntsig zoo ntawm ntug kev tiv thaiv, thiab ob qho tib si yuav tsum yog ntug- trimmed los yog kaw qhov twg yuav raug mob hnyav.

Qhov kev xaiv ntawm PPGI thiab PPGL nyob ntawm daim ntawv thov: PPGL yog qhov zoo dua rau kev siv lub ru tsev thiab cladding nyob rau hauv qhov chaw raug, thaum PPGI tseem yog ib qho khoom muaj nqis xaiv rau kev xav tau tsawg dua thiab tus nqi - cov haujlwm tseem ceeb.

Galvalume Txheej Nyhav: AZ Numbers

Lub galvalume txheej yog tsim los ntawm nws qhov hnyav ntawm ib cheeb tsam, qhia raws li AZ ua raws li tus lej. Cov qib sib txawv ntawm AZ40 txog AZ150, qhov twg tus lej qhia tag nrho cov txheej txheej ntawm ob sab hauv grams ib square meter. Tus lej AZ siab dua txhais tau hais tias cov txheej txheej tuab, lub neej ntev dua corrosion thiab feem ntau yog tus nqi siab dua. Qhov kev xaiv raug yog nyob ntawm ib puag ncig:

AZ40-AZ60: me me sab hauv tsev ib puag ncig, lub teeb profiles thiab kev siv nrog kev tiv thaiv zoo.

AZ80-AZ100: kev siv lub tsev dav dav xws li vov tsev thiab cladding nyob rau hauv nruab nrab huab cua.

AZ120-AZ150: ib puag ncig nruj, thaj chaw ntug hiav txwv thiab cov phiaj xwm tsim lub neej ntev.

Qhov hnyav txheej yuav tsum tau teev meej meej hauv kev yuav khoom, vim tias nws yog ib qho loj tshaj plaws hauv kev ua haujlwm corrosion ntawm cov khoom tiav.

Lub Paint Coating System

Cov khoom ua ntej pleev xim yog ntau dua li cov xim pleev xim: nws yog ntau- txheej txheej txheej. Nyob rau sab saum toj, ib txheej primer muab adhesion thiab corrosion kuj, thiab lub tsho tiav tiav muab xim, gloss thiab huab cua tsis kam. Lub tsho tiv no tiv thaiv sab nraub qaum thaum thauj, khaws cia thiab tsim. Cov tsev neeg cov xim tiav uas siv rau ntawm PPGL suav nrog:

Polyester (PE): dav dav -lub hom phiaj, zoo formability thiab xim tuav ntawm tus nqi sib tw.

Silicon-hloov polyester (SMP): txhim kho huab cua thiab kub ua haujlwm rau kev siv vov tsev.

High- polyester durability (HDP): ncua xim thiab gloss tuav nyob rau hauv hnyav raug tshav ntuj.

PVDF (polyvinylidene fluoride): hwm huab cua tsis kam, siv rau thaj chaw thaj chaw thiab cov dej hiav txwv.

Cov xim xim, zaj duab xis thickness thiab xim yuav tsum tau pom zoo nrog tus neeg muag khoom, thiab cov qauv yuav tsum tau pom zoo ua ntej ntau lawm. Zaj duab xis thickness feem ntau kuaj nrog lub txheej thickness ntsuas ntawm ob sab.

Cov Qauv thiab Kev Tswj Xyuas Zoo

PPGL ntau lawm thiab kev sim yog them los ntawm cov qauv thoob ntiaj teb thiab lub teb chaws, suav nrog ASTM A755 rau prepainted steel, JIS G3322 rau prepainted aluminium-zinc coated steel, thiab GB / T 12754 hauv Suav teb. Cov kev kuaj xyuas tseem ceeb yog txheej thickness, xim adhesion (T- khoov thiab cuam tshuam kev ntsuam xyuas), hardness, gloss thiab xim sib xws. Lub substrate nws tus kheej yuav tsum ua raws li cov txheej txheem galvalume, xws li ASTM A792 los yog JIS G3321, los lav lub hauv paus hlau ua haujlwm.

Kev tuav, khaws cia thiab tsim

Prepainted coils yog ruaj tab sis tsis indestructible. Kev tuav kom raug khaws cov txheej:

Khaws cov coils sab hauv tsev, tawm hauv av, thiab ua kom qhuav; Kev tiv tauj ntev ntev tuaj yeem stain lossis corrode cov npoo txiav.

Tshem tawm cov yeeb yaj kiab tiv thaiv (yog tias siv) nyob rau lub sijhawm teev tseg los ntawm tus neeg muag khoom, vim tias muaj hnub nyoog zaj duab xis yuav nyuaj rau tev.

Siv cov cuab yeej tsim nyog thiab lubrication thaum yob- ua los yog khoov, kom tsis txhob khawb lossis pleev xim rau.

Txiav nrog ntse hniav thiab deburr txiav ntug qhov twg lawv yuav raug huab cua.

Tsis txhob rub cov ntawv hla ib leeg thaum lub sijhawm teeb tsa; siv cov khoom tiv thaiv thiab nqa khoom.

Cov lus nug nquag

Q1. PPGL txhais li cas?PPGL yog luv rau prepainted galvalume steel: galvalume -coated (55% aluminium, 43.5% zinc, 1.5% silicon) steel substrate nrog cov xim txheej txheej siv rau ntawm kab nruam.

Q2. Qhov twg zoo dua, PPGI lossis PPGL?Rau tib txheej txheej, PPGL muab cov cua sov zoo dua, tiv thaiv tshav kub, tiv thaiv corrosion thiab kev pab cuam lub neej, ntawm tus nqi kwv yees li 2-3% siab dua PPGI. Xaiv PPGL rau cov ntawv thov nthuav tawm thiab xav tau, thiab PPGI qhov twg pob nyiaj yog qhov tseem ceeb.

Q3. Dab tsi txheej thicknesses muaj rau galvalume txheej?Galvalume txheej yog muaj los ntawm AZ40 txog AZ150. Cov lej AZ siab dua txhais tau tias cov txheej txheej tuab dua thiab lub neej ntev dua corrosion, thiab qhov kev xaiv zoo nyob ntawm qhov chaw raug thiab lub neej tsim nyog.

Q4. Lub ru tsev PPGL ntev npaum li cas?Kev pabcuam lub neej nyob ntawm qhov hnyav ntawm txheej, xim txheej txheem, ib puag ncig thiab kev teeb tsa zoo. Nrog rau cov txheej txheem AZ uas tsim nyog thiab cov xim ruaj khov, PPGL cladding thiab ru tsev feem ntau kav ntev li 15-30 xyoo ua ntej yuav tsum tau kho lossis rov ua dua tshiab, raug rau ib puag ncig.

Q5. PPGL puas tuaj yeem txiav thiab tsim ntawm qhov chaw?Yog lawm. PPGL tuaj yeem raug txiav, xuas nrig ntaus thiab yob- tsim nrog cov cuab yeej hlau txheej txheem. Siv cov cuab yeej ntse, tsis txhob khawb cov xim, thiab tiv thaiv cov npoo ntawm qhov chaw hnyav.

Q6. Cov qauv twg siv rau PPGL?Cov qauv siv tau yooj yim yog ASTM A755, JIS G3322 thiab GB / T 12754 rau cov khoom ua ntej, nrog cov galvalume substrate rau ASTM A792 lossis JIS G3321. Kev yuav khoom tshwj xeeb yuav tsum muaj npe tus qauv, AZ txheej hnyav, xim hom thiab zaj duab xis tuab.