Gary W. Dallin, P. Eng. Pre-painted hlau coated steel panels rau lub tsev tau ntse siv tau ntau xyoo. Ib qho kev qhia txog nws qhov kev muaj koob meej yog kev siv dav dav ntawm pre-painted steel ru tsev hauv Canada thiab thoob ntiaj teb.
Cov ru tsev hlau kav ntev li ob mus rau peb zaug ntau dua li cov uas tsis yog hlau. 1 Cov tuam tsev hlau tsim muaj yuav luag ib nrab ntawm tag nrho cov tsev tsis tshua muaj neeg nyob hauv North America, thiab feem ntau ntawm cov tsev no tau pleev xim ua ntej, hlau-coated steel panels rau lub ru tsev thiab phab ntsa.
Kev qhia tshwj xeeb ntawm cov txheej txheem txheej txheej (xws li kev kho ua ntej, primer thiab sab saum toj txheej) tuaj yeem ua kom muaj kev pabcuam lub neej ntawm cov vov tsev hlau thiab cov hlau coated phab ntsa hauv ntau tshaj 20 xyoo hauv ntau daim ntawv thov. Yuav kom ua tiav lub neej ua haujlwm ntev, cov neeg tsim khoom thiab cov neeg tsim cov xim coated steel ntawv yuav tsum xav txog cov teeb meem hauv qab no:
Environmental Issues Ib qho ntawm thawj yam uas yuav tsum tau xav txog thaum xaiv cov khoom ua ntej pleev xim rau hlau coated steel yog qhov chaw uas nws yuav siv. 2 Ib puag ncig suav nrog kev nyab xeeb dav dav thiab kev cuam tshuam hauv cheeb tsam hauv cheeb tsam.
Lub latitude ntawm qhov chaw txiav txim siab npaum li cas thiab siv ntawm UV hluav taws xob uas cov khoom raug nthuav tawm, tus naj npawb ntawm cov sij hawm hnub ci hauv ib xyoos thiab lub kaum sab xis ntawm qhov raug ntawm cov xim pleev xim ua ntej. Kom meej meej, lub kaum sab xis qis (piv txwv li, tiaj tus) ru tsev ntawm cov tsev nyob hauv thaj chaw qis-latitude suab puam yuav tsum tau UV-resistant primer thiab tiav tshuab kom tsis txhob ntxov ntxov fading, chalking, thiab tawg. Ntawm qhov tod tes, UV hluav taws xob puas tsuaj rau ntsug cladding ntawm phab ntsa ntawm cov tsev nyob rau hauv high latitudes nrog huab cua huab cua tsawg dua.
Lub sijhawm ntub dej yog lub sijhawm thaum lub ru tsev thiab phab ntsa cladding ua damp vim los nag, high humidity, pos huab thiab condensation. Xim tshuab tsis muaj kev tiv thaiv los ntawm noo noo. Yog tias sab laug ntub ntev txaus, cov dej noo thaum kawg yuav ncav cuag lub substrate hauv qab txhua txheej thiab pib corrode. Tus nqi ntawm cov tshuaj lom neeg muaj kuab lom xws li sulfur dioxide thiab chlorides tam sim no nyob rau hauv cov huab cua txiav txim siab tus nqi ntawm corrosion.
Cov kev cuam tshuam hauv zos lossis microclimatic uas yuav tsum tau txiav txim siab suav nrog cua kev taw qhia, tso cov pa phem los ntawm kev lag luam thiab ib puag ncig marine.
Thaum xaiv cov txheej txheem txheej txheem, cov kev taw qhia cua dav dav yuav tsum raug coj mus rau hauv tus account. Kev saib xyuas yuav tsum tau ua yog tias lub tsev nyob qis qis ntawm qhov chaw muaj tshuaj lom neeg. Gaseous thiab cov khoom tso pa tawm tuaj yeem ua rau muaj kev cuam tshuam loj rau cov xim xim. Tsis pub dhau 5 mais (3.1 mais) ntawm thaj chaw muaj kev lag luam hnyav, corrosivity tuaj yeem nyob ntawm nruab nrab mus rau qhov hnyav, nyob ntawm huab cua kev taw qhia thiab huab cua hauv zos. Tshaj li qhov kev ncua deb, qhov cuam tshuam nrog kev ua qias tuaj ntawm cov nroj tsuag feem ntau txo qis.
Yog tias cov tsev pleev xim nyob ze rau ntawm ntug dej hiav txwv, qhov cuam tshuam ntawm cov dej ntsev tuaj yeem ua rau hnyav heev. Txog li 300 m (984 ft) los ntawm ntug dej hiav txwv tuaj yeem yog qhov tseem ceeb, thaum muaj kev cuam tshuam loj tuaj yeem hnov txog 5 km hauv av thiab txawm tias ntxiv, nyob ntawm ntug hiav txwv cua. Lub ntug dej hiav txwv Atlantic ntawm Canada yog ib thaj chaw uas muaj huab cua quab yuam tuaj yeem tshwm sim.
Yog tias qhov corrosivity ntawm qhov chaw tsim kho tsis pom tseeb, nws yuav muaj txiaj ntsig los ua ib qho kev tshawb fawb hauv zos. Cov ntaub ntawv los ntawm cov chaw saib xyuas ib puag ncig muaj txiaj ntsig zoo vim nws muab cov ntaub ntawv qhia txog nag lossis daus, av noo thiab kub. Tshawb xyuas qhov chaw tiv thaiv, tsis huv rau cov khoom me me los ntawm kev lag luam, kev, thiab ntsev hiav txwv. Kev ua tau zoo ntawm cov qauv nyob ze yuav tsum raug kuaj xyuas - yog tias cov khoom siv hauv tsev xws li galvanized fencing thiab galvanized lossis pre-painted cladding, ru tsev, gutters thiab flashings yog nyob rau hauv zoo tom qab 10-15 xyoo, ib puag ncig tej zaum yuav tsis corrosive. Yog tias cov qauv ua teeb meem tom qab tsuas yog ob peb xyoos, nws yog ib qho tsim nyog yuav tsum tau ceev faj.
Cov neeg muab xim pleev xim muaj kev paub thiab kev paub los pom zoo rau cov xim pleev xim rau cov ntawv thov tshwj xeeb.
Cov lus pom zoo rau Hlau Coated Panels Lub thickness ntawm cov xim hlau txheej nyob rau hauv cov xim muaj feem xyuam rau lub neej kev pab cuam ntawm pre-painted panels nyob rau hauv situ, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm galvanized panels. Qhov tuab ntawm cov hlau txheej, qhov qis dua ntawm qhov kev xeb ntawm cov npoo txiav, khawb lossis lwm qhov chaw uas qhov kev ncaj ncees ntawm cov xim pleev xim raug cuam tshuam.
Shear corrosion ntawm hlau coatings qhov chaw txiav los yog kev puas tsuaj rau cov xim muaj nyob, thiab qhov twg zinc los yog zinc-raws li alloys raug. Raws li cov txheej txheem siv los ntawm cov tshuaj tiv thaiv corrosive, cov xim poob nws qhov adhesion thiab flakes los yog flakes tawm ntawm qhov chaw. Qhov tuab ntawm cov hlau txheej, qhov qeeb qeeb ntawm qhov kev sib tsoo thiab qhov qeeb ntawm kev sib tsoo ceev.
Nyob rau hauv cov ntaub ntawv ntawm galvanizing, qhov tseem ceeb ntawm zinc txheej thickness, tshwj xeeb tshaj yog rau cov ru tsev, yog ib tug ntawm cov laj thawj vim li cas ntau galvanized ntawv cov khoom manufacturers pom zoo ASTM A653 txheem specifications rau kub-dip galvanized (galvanized) los yog zinc-hlau alloy steel ntawv. dipping txheej txheem (galvanized annealed), txheej hnyav (xws li huab hwm coj) xaiv G90 (ie 0.90 oz / sqft) Z275 (ie 275 g / m2) haum rau feem ntau pre-painted galvanized daim ntawv sau npe. Rau cov txheej txheem ua ntej ntawm 55% AlZn, qhov teeb meem thickness yuav nyuaj rau ntau yam. ASTM A792 / A792M, Standard Specification rau Steel Phaj, 55% Kub Dip Aluminium-Zinc Alloy Txheej Qhov hnyav (xws li pawg) Tsim AZ50 (AZM150) feem ntau yog cov txheej txheem pom zoo raws li nws tau pom tias tsim nyog rau kev ua haujlwm ntev.
Ib yam uas yuav tsum nco ntsoov yog tias cov txheej txheem yob txheej feem ntau tsis tuaj yeem siv cov ntawv hlau-coated uas tau dhau los nrog cov tshuaj chromium. Cov tshuaj no tuaj yeem paug cov tshuaj ntxuav thiab cov tshuaj kho ua ntej rau cov kab pleev xim, yog li cov boards tsis-passivated feem ntau yog siv. 3
Vim nws qhov nyuaj thiab nkig, Galvanized Treatment (GA) tsis yog siv los tsim cov ntawv pleev xim ua ntej. Qhov kev sib raug zoo ntawm cov xim thiab cov zinc-hlau alloy txheej no muaj zog dua li kev sib raug zoo ntawm txheej thiab hlau. Thaum molding los yog cuam tshuam, GA yuav tawg thiab delaminate nyob rau hauv cov xim, ua rau ob txheej txheej tev tawm.
Paint System Considerations Pom tseeb, ib qho tseem ceeb tshaj plaws hauv kev ua kom muaj kev ua tau zoo yog cov xim siv rau txoj haujlwm. Piv txwv li, nyob rau hauv cov cheeb tsam uas tau txais ntau lub hnub ci thiab khaus UV raug, nws yog ib qho tseem ceeb uas yuav tau xaiv ib tug fade-resistant finish, thaum nyob rau hauv cov cheeb tsam uas muaj high humidity, pre-kho thiab tag yog tsim los tiv thaiv kom txhob ya raws. (Cov teeb meem cuam tshuam nrog cov txheej txheem tshwj xeeb txheej txheej yog ntau thiab nyuaj thiab dhau ntawm cov kab lus no.)
Kev tiv thaiv corrosion ntawm cov xim pleev xim galvanized hlau yog cuam tshuam los ntawm cov tshuaj lom neeg thiab lub cev ruaj khov ntawm qhov sib cuam tshuam ntawm zinc nto thiab cov organic txheej. Txog thaum tsis ntev los no, zinc plating siv cov tshuaj oxide sib xyaw ua ke los muab kev sib txuas ntawm lub ntsej muag. Cov ntaub ntawv no tau hloov zuj zus los ntawm cov tuab thiab ntau dua corrosion resistant zinc phosphate coatings uas yog ntau resistant rau corrosion nyob rau hauv zaj duab xis. Zinc phosphate yog tshwj xeeb tshaj yog zoo nyob rau hauv marine ib puag ncig thiab nyob rau hauv lub caij ntuj no ntub tej yam kev mob.
ASTM A755 / A755M, ib daim ntawv qhia dav dav ntawm cov txheej txheem muaj rau cov khoom siv hlau-coated steel, yog hu ua "Steel Sheet, Kub Dip Coated Hlau" thiab pre-coated los ntawm coil txheej rau cov khoom tsim khoom raug cuam tshuam los ntawm sab nraud ib puag ncig.
Cov txheej txheem kev txiav txim siab rau txheej txheej ua ntej-coated yob Ib qho tseem ceeb sib txawv uas cuam tshuam rau lub neej ntawm cov khoom ua ntej coated nyob rau hauv situ yog fabrication ntawm pre-coated ntawv. Cov txheej txheem txheej rau pre-coated yob tuaj yeem cuam tshuam rau kev ua tau zoo. Piv txwv li, xim zoo adhesion yog ib qho tseem ceeb los tiv thaiv tev lossis blistering ntawm cov xim hauv daim teb. Zoo adhesion yuav tsum tau tswj zoo yob txheej tuav cov txheej txheem. Cov txheej txheem ntawm painting rolls cuam tshuam rau kev pab cuam lub neej nyob rau hauv lub tshav pob. Cov teeb meem suav nrog:
Roll txheej cov tuam txhab tsim cov ntawv pleev xim ua ntej rau cov tsev muaj cov txheej txheem zoo tsim kom ntseeg tau tias cov teeb meem no raug tswj kom raug. 4
Profileing thiab vaj huam sib luag tsim nta Qhov tseem ceeb ntawm kev tsim vaj huam sib luag, tshwj xeeb tshaj yog lub vojvoog dabtsi yog khoov raws txoj kab sib sau, yog lwm qhov teeb meem tseem ceeb. Raws li tau hais dhau los, zinc corrosion tshwm sim qhov twg cov xim zaj duab xis tau puas lawm. Yog tias lub vaj huam sib luag tsim nrog lub vojvoog me me khoov, yuav ib txwm muaj cov kab nrib pleb hauv cov xim pleev xim. Cov kab nrib pleb no feem ntau me me thiab feem ntau hu ua "microcracks". Txawm li cas los xij, cov txheej txheem hlau raug nthuav tawm thiab muaj peev xwm ua kom muaj kev txhim kho corrosion raws li qhov khoov lub vojvoog ntawm cov dov vaj huam sib luag.
Qhov ua tau ntawm microcracks nyob rau hauv khoov tsis tau txhais hais tias qhov sib sib zog nqus seem yog tsis yooj yim sua - designers yuav tsum muab rau qhov loj tshaj plaws khoov vojvoog kom haum raws li cov seem no.
Ntxiv rau qhov tseem ceeb ntawm lub vaj huam sib luag thiab yob txoj kev siv lub tshuab tsim, kev ua haujlwm ntawm yob txoj kev tshuab kuj tseem cuam tshuam rau kev tsim khoom hauv kev lag luam. Piv txwv li, qhov chaw ntawm cov menyuam txheej cuam tshuam rau qhov tseeb khoov vojvoog. Yog tias kev sib raug zoo tsis ua kom raug, khoov tuaj yeem tsim cov kinks ntse ntawm profile khoov es tsis txhob ua kom du du nkhaus radii. Cov "nruj" khoov tuaj yeem ua rau microcracks hnyav dua. Nws tseem yog ib qho tseem ceeb uas cov mating rollers tsis khawb cov xim pleev xim, vim qhov no yuav txo tau lub peev xwm ntawm cov xim kom hloov mus rau kev ua haujlwm dabtsi yog khoov. Cushioning yog lwm yam teeb meem uas yuav tsum tau txheeb xyuas thaum lub sij hawm profileing. Txoj kev ib txwm tso cai rau lub caij nplooj ntoo hlav yog "kink" lub vaj huam sib luag. Qhov no yog qhov tsim nyog, tab sis kev khoov ntau dhau thaum lub sijhawm ua haujlwm profile ua rau ntau microcracks. Ib yam li ntawd, cov tuam tsev tsim vaj huam sib luag cov txheej txheem tswj kom zoo yog tsim los daws cov teeb meem no.
Ib qho xwm txheej hu ua "cov kaus poom roj" lossis "pockets" qee zaum tshwm sim thaum dov cov xim hlau ua ntej. Vaj huam sib luag profiles nrog cov phab ntsa dav lossis cov seem tiaj tus (xws li lub tsev profiles) tshwj xeeb tshaj yog raug. Qhov teeb meem no tsim ib qho tsis pom zoo wavy zoo li thaum txhim kho panels ntawm lub ru tsev thiab phab ntsa. Cov kaus poom roj tuaj yeem tshwm sim los ntawm ntau yam ua rau, suav nrog kev ua haujlwm tsis zoo ntawm cov ntawv tuaj, cov menyuam xovxwm ua haujlwm thiab cov txheej txheem mounting, thiab tuaj yeem yog qhov tshwm sim ntawm buckling ntawm daim ntawv thaum lub sij hawm tsim raws li compressive stresses generated nyob rau hauv longitudinal kev taw qhia ntawm lub daim ntawv. vaj huam sib luag. 5 Qhov elastic buckling no tshwm sim vim hais tias cov hlau tsis tshua muaj los yog xoom yield zog elongation (YPE), lub nplaum-slip deformation tshwm sim thaum cov hlau yog stretched.
Thaum lub sij hawm dov, daim ntawv sim ua kom nyias tawm hauv cov thickness kev taw qhia thiab shrink nyob rau hauv cov longitudinal kev taw qhia nyob rau hauv lub web cheeb tsam. Nyob rau hauv qis YPE steels, qhov chaw undeformed nyob ib sab ntawm qhov khoov yog tiv thaiv los ntawm longitudinal shrinkage thiab nyob rau hauv compression. Thaum lub compressive kev nyuaj siab tshaj qhov limiting elastic buckling kev nyuaj siab, hnab tshos tsis tshwm sim nyob rau hauv lub phab ntsa cheeb tsam.
High YPE steels txhim kho deformability vim tias muaj kev ntxhov siab ntau dua yog siv rau hauv zos thinning tsom rau kev khoov, ua rau muaj kev ntxhov siab tsawg dua nyob rau hauv txoj kab ntev. Yog li, cov phenomenon ntawm discontinuous (hauv zos) fluidity yog siv. Yog li ntawd, pre-painted steel nrog YPE ntau dua 4% tuaj yeem txaus siab dov rau hauv architectural profiles. Cov ntaub ntawv YPE qis tuaj yeem dov yam tsis muaj roj tso tsheb hlau luam, nyob ntawm qhov chaw zeb, steel thickness thiab vaj huam sib luag profile.
Qhov hnyav ntawm cov roj tank txo qis vim ntau cov struts yog siv los tsim cov profile, steel thickness nce, khoov radii nce thiab phab ntsa dav txo. Yog tias YPE siab dua 6%, gouges (piv txwv li qhov tseem ceeb hauv cheeb tsam deformation) yuav tshwm sim thaum dov. Kev cob qhia cov tawv nqaij kom zoo thaum lub sijhawm tsim khoom yuav tswj tau qhov no. Steelmakers yuav tsum paub txog qhov no thaum muab cov xim pleev xim ua ntej rau lub tsev vaj huam sib luag kom cov txheej txheem tsim khoom tuaj yeem siv los tsim YPE nyob rau hauv kev txwv.
Kev khaws cia thiab tuav kev txiav txim siab Tej zaum qhov teeb meem tseem ceeb tshaj plaws nrog rau qhov chaw cia yog ua kom cov panels qhuav kom txog thaum lawv tau nruab rau hauv lub tsev. Yog tias cov dej noo tau tso cai nkag mus rau ntawm cov vaj huam sib luag uas nyob ib sab vim los nag los yog condensation, thiab cov vaj huam sib luag ntawm cov vaj huam sib luag tom qab tsis pub kom qhuav sai, qee qhov tsis zoo tuaj yeem tshwm sim. Xim adhesion tuaj yeem ua rau tsis zoo ua rau lub hnab me me ntawm cov xim thiab zinc txheej ua ntej lub vaj huam sib luag muab tso rau hauv kev pabcuam. Needless hais, qhov kev coj cwj pwm no tuaj yeem ua rau kom poob ntawm cov xim adhesion hauv kev pabcuam.
Qee lub sij hawm muaj cov dej noo ntawm cov vaj huam sib luag ntawm qhov chaw tsim kho tuaj yeem ua rau tsim cov xeb dawb ntawm cov panels (piv txwv li corrosion ntawm zinc txheej). Qhov no tsis yog tsuas yog aesthetically undesirable, tab sis tuaj yeem ua rau lub vaj huam sib luag siv tsis tau.
Reams ntawm daim ntawv nyob rau hauv qhov chaw ua hauj lwm yuav tsum tau qhwv nyob rau hauv daim ntawv yog hais tias lawv tsis tuaj yeem khaws cia rau hauv. Daim ntawv yuav tsum tau siv nyob rau hauv xws li ib txoj kev uas dej tsis sau nyob rau hauv lub bale. Yam tsawg kawg nkaus, lub pob yuav tsum tau them nrog ib lub tarp. Hauv qab yog sab laug kom cov dej ntws tau yooj yim; Tsis tas li ntawd, nws ua kom muaj huab cua tsis pub dawb rau cov khoom ziab kom qhuav nyob rau hauv rooj plaub ntawm condensation. 6
Architectural Design Considerations Corrosion cuam tshuam los ntawm huab cua ntub. Yog li ntawd, ib qho ntawm cov qauv tsim tseem ceeb tshaj plaws yog los xyuas kom meej tias tag nrho cov dej nag thiab daus tuaj yeem ntws tawm ntawm lub tsev. Dej yuav tsum tsis txhob pub kom sib sau thiab nkag mus rau hauv cov tsev.
Lub ru tsev me me yog qhov yooj yim tshaj plaws rau kev xeb vim tias lawv raug UV hluav taws xob ntau, cov kua qaub los nag, cov khoom me me thiab cov tshuaj cua tshuab cua - txhua qhov kev siv zog yuav tsum tau ua kom tsis txhob muaj dej hauv qab nthab, qhov cua, cov khoom siv cua txias thiab cov kev taug kev.
Waterlogging ntawm ntug spillway nyob ntawm txoj kab nqes ntawm lub ru tsev: qhov siab dua txoj kab nqes, qhov zoo dua cov khoom corrosive ntawm ntug dej. Tsis tas li ntawd, cov hlau tsis sib xws xws li hlau, txhuas, tooj liab, thiab txhuas yuav tsum raug cais tawm hluav taws xob los tiv thaiv galvanic corrosion, thiab cov dej ntws yuav tsum tau tsim los tiv thaiv dej los ntawm ib qho khoom mus rau lwm qhov. Xav txog kev siv cov xim sib dua ntawm koj lub ru tsev kom txo tau UV puas.
Tsis tas li ntawd, lub neej ntawm lub vaj huam sib luag tuaj yeem ua luv luv nyob rau hauv cov cheeb tsam ntawm lub tsev uas muaj cov daus ntau ntawm lub ru tsev thiab cov daus tseem nyob hauv lub ru tsev rau lub sijhawm ntev. Yog tias lub tsev tsim los kom qhov chaw nyob hauv qab lub ru tsev slabs sov, ces cov daus nyob ib sab ntawm cov slabs tuaj yeem yaj tag nrho lub caij ntuj no. Qhov no txuas ntxiv qeeb qeeb ua rau muaj kev sib cuag dej mus tas li (piv txwv li kev ntub dej ntev) ntawm cov xim pleev xim.
Raws li tau hais ua ntej, dej yuav nkag mus rau hauv cov yeeb yaj kiab xim thiab corrosion yuav hnyav, ua rau lub neej luv luv. Yog hais tias lub ru tsev sab hauv yog insulated thiab lub underside ntawm shingles tseem txias, daus nyob rau hauv kev sib cuag nrog cov txheej saum npoo tsis tas yuav yaj, thiab xim blistering thiab zinc corrosion cuam tshuam nrog lub sij hawm ntev ntawm noo noo yog zam. Tsis tas li ntawd nco ntsoov tias lub thicker lub xim txheej txheem, nws yuav siv sij hawm ntev ua ntej noo noo nkag mus rau hauv lub substrate.
Phab ntsa Vertical sab phab ntsa tsis tshua muaj huab cua thiab tsis muaj kev puas tsuaj ntau dua li lwm lub tsev, tshwj tsis yog cov chaw tiv thaiv. Tsis tas li ntawd, cladding nyob rau hauv cov chaw tiv thaiv xws li phab ntsa reliefs thiab ledges tsis raug tshav ntuj thiab los nag. Nyob rau hauv cov chaw no, corrosion yog kho kom zoo los ntawm qhov tseeb hais tias cov pa phem tsis ntxuav tawm los ntawm nag thiab condensation, thiab kuj tsis qhuav tawm vim tsis muaj hnub ci ncaj qha. Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev tiv thaiv kev cuam tshuam hauv kev lag luam lossis kev lag luam hauv hiav txwv lossis ze rau txoj kev loj.
Kab rov tav ntu ntawm phab ntsa cladding yuav tsum muaj txoj kab nqes txaus los tiv thaiv cov dej thiab av - qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau hauv qab daus ebbs, vim txoj kab nqes tsis txaus tuaj yeem ua rau corrosion ntawm nws thiab cladding saum toj no.
Zoo li lub ru tsev, cov hlau tsis sib xws xws li hlau, txhuas, tooj liab thiab txhuas yuav tsum tau ua hluav taws xob tiv thaiv kom tsis txhob muaj galvanic corrosion. Tsis tas li ntawd, nyob rau hauv cov cheeb tsam uas muaj cov daus hnyav hnyav, corrosion tuaj yeem yog ib qho teeb meem sab hauv - yog tias ua tau, thaj chaw ze ntawm lub tsev yuav tsum tau muab tshem tawm ntawm cov daus los yog cov rwb thaiv tsev zoo yuav tsum tau muab ntsia kom tiv thaiv kom tsis txhob muaj snowmelt ntawm lub tsev. vaj huam sib luag nto.
Rwb thaiv tsev yuav tsum tsis txhob ntub, thiab yog tias nws ua, tsis txhob cia nws los rau hauv kev sib cuag nrog pre-painted panels - yog hais tias lub rwb thaiv tsev tsis ntub, nws yuav tsis qhuav sai sai (yog tias tag nrho), tawm hauv lub panels raug mus rau lub sij hawm ntev. noo noo - - Qhov no yuav ua rau kom nrawm nrawm. Piv txwv li, thaum lub rwb thaiv tsev nyob rau hauv qab ntawm sab phab ntsa vaj huam sib luag tau ntub vim dej ingress mus rau hauv qab, ib tug tsim nrog cov panels overlapping hauv qab zoo li zoo dua tsis muaj lub hauv qab ntawm lub vaj huam sib luag ntsia ncaj qha rau saum lub. hauv qab. Txo qhov ua tau ntawm qhov teeb meem no tshwm sim.
Pre-painted panels coated nrog 55% aluminium-zinc alloy txheej yuav tsum tsis txhob tuaj ncaj qha nrog cov pob zeb ntub dej - lub siab alkalinity ntawm cov pob zeb tuaj yeem corrode aluminium, ua rau cov txheej tev tawm. 7 Yog tias daim ntawv thov cuam tshuam nrog kev siv cov fasteners uas nkag mus rau lub vaj huam sib luag, lawv yuav tsum raug xaiv kom lawv lub neej ua haujlwm zoo sib xws ntawm cov xim pleev xim. Niaj hnub no muaj qee cov screws / fasteners nrog cov organic txheej ntawm lub taub hau rau corrosion kuj thiab cov no muaj ntau yam xim kom phim lub ru tsev / phab ntsa cladding.
INSTALLATION CONSIDERATIONS Ob qhov teeb meem tseem ceeb tshaj plaws uas cuam tshuam nrog kev teeb tsa ntawm thaj chaw, tshwj xeeb tshaj yog thaum nws los txog rau lub ru tsev, tuaj yeem yog txoj hauv kev uas cov panels txav mus hla lub ru tsev thiab kev cuam tshuam ntawm cov neeg ua haujlwm khau thiab cov cuab yeej. Yog tias burrs tsim rau ntawm cov npoo ntawm cov vaj huam sib luag thaum txiav, cov xim zaj duab xis tuaj yeem khawb cov zinc txheej thaum cov panels swb rau ib leeg. Raws li tau hais ua ntej, qhov twg qhov kev ncaj ncees ntawm cov xim raug cuam tshuam, cov hlau txheej yuav pib corrode sai dua, uas cuam tshuam tsis zoo rau lub neej ntawm lub vaj huam sib luag ua ntej. Ib yam li ntawd, cov neeg ua haujlwm khau tuaj yeem ua rau khawb zoo sib xws. Nws yog ib qho tseem ceeb uas cov khau los yog khau khiab tsis pub cov pob zeb me me los yog cov tho steel nkag rau hauv ib leeg.
Cov qhov me me thiab / lossis cov thais ("chips") feem ntau tsim thaum sib dhos, fastening thiab tiav - nco ntsoov, cov no muaj cov hlau. Tom qab ua haujlwm tiav, lossis ua ntej, cov hlau tuaj yeem corrode thiab tawm ntawm qhov tsis zoo xeb, tshwj xeeb tshaj yog tias cov xim xim sib dua. Feem ntau, qhov kev hloov pauv no tau suav hais tias yog qhov kev puas tsuaj ntxov ntxov ntawm cov xim pleev xim ua ntej, thiab sib nrug los ntawm kev xav txog kev zoo nkauj, cov tswv tsev yuav tsum nco ntsoov tias lub tsev yuav tsis poob ntxov. Tag nrho cov shavings ntawm lub ru tsev yuav tsum tau muab tshem tawm tam sim ntawd.
Yog hais tias lub installation muaj xws li ib tug pitched ru tsev, dej yuav sau. Txawm hais tias tus qauv kev nqes hav yuav txaus kom tso dej dawb, tej zaum yuav muaj teeb meem hauv zos ua rau dej sawv. Cov dents me me uas cov neeg ua haujlwm tso tseg, xws li los ntawm kev taug kev lossis tso cov cuab yeej, tuaj yeem tawm hauv thaj chaw uas tsis tuaj yeem ntws tawm. Yog tias tsis pub tso dej dawb, cov dej sawv ntsug tuaj yeem ua rau cov xim hlwv, uas tuaj yeem ua rau cov xim tev tawm hauv cov cheeb tsam loj, uas tuaj yeem ua rau muaj kev xeb ntau dua ntawm cov hlau hauv qab cov xim. Kev teeb tsa ntawm lub tsev tom qab erection tuaj yeem ua rau cov dej tsis zoo ntawm lub ru tsev.
Kev saib xyuas yooj yim ntawm cov xim pleev xim rau ntawm lub tsev muaj xws li yaug dej ib ntus. Rau kev teeb tsa uas cov panels raug los nag (xws li lub ru tsev), qhov no feem ntau tsis tsim nyog. Txawm li cas los xij, hauv thaj chaw tiv thaiv xws li soffits thiab phab ntsa hauv qab eaves, kev ntxuav txhua txhua rau lub hlis yog pab tau tshem tawm cov ntsev thiab cov khib nyiab los ntawm cov vaj huam sib luag.
Nws raug pom zoo tias kev tu txhua yam yuav tsum tau ua los ntawm thawj "kev sim tu" ntawm thaj chaw me me ntawm qhov chaw nyob rau hauv qhov chaw uas tsis qhib heev kom tau txais qee qhov txiaj ntsig zoo.
Tsis tas li ntawd, thaum siv lub ru tsev, nws yog ib qho tseem ceeb kom tshem tawm cov khib nyiab xws li nplooj, av, los yog kev tsim cov dej ntws (xws li plua plav lossis lwm cov khib nyiab nyob ib puag ncig lub ru tsev vents). Txawm hais tias cov seem no tsis muaj cov tshuaj hnyav, lawv yuav tiv thaiv kom qhuav sai uas yog qhov tseem ceeb rau lub ru tsev ntev.
Tsis tas li ntawd, tsis txhob siv cov shovels los tshem cov daus los ntawm lub ru tsev. Qhov no tuaj yeem ua rau muaj khawb loj heev ntawm cov xim.
Pre-painted hlau-coated steel panels rau vaj tse yog tsim los rau xyoo ntawm kev pab cuam tsis muaj teeb meem. Txawm li cas los xij, dhau sij hawm, cov tsos ntawm txhua txheej xim yuav hloov, tej zaum mus rau qhov uas yuav tsum tau repainting. 8
Xaus Pre-painted galvanized steel nplooj ntawv tau ua tiav siv los tsim cladding (ru tsev thiab phab ntsa) nyob rau hauv ntau yam huab cua rau ntau xyoo lawm. Kev ua haujlwm ntev thiab tsis muaj teeb meem tuaj yeem ua tiav los ntawm kev xaiv txoj cai ntawm cov xim xim, ua tib zoo tsim cov qauv thiab kev saib xyuas tsis tu ncua.
Post lub sij hawm: Jun-05-2023