Cov hlau, tshwj xeeb tshaj yog hlau, ntsib ntau yam teeb meem thaum raug rau ib puag ncig ntuj:
Moisture thiab Dej: Cov dej nag thiab cov condensation ncaj qha mus rau cov hlau saum npoo yog cov xwm txheej tseem ceeb rau electrochemical corrosion (rusting).
Corrosive Media: Muaj cua sov, tshuaj tsuag ntsev hauv cov ntug dej hiav txwv, thiab cov kua qaub los nag hauv qee thaj tsam muaj cov tshuaj chloride ions thiab sulfides, uas ua rau kom cov txheej txheem corrosion ntawm hlau.
Ultraviolet Radiation thiab Kub Qhov Sib txawv: Ntev- lub sij hawm raug ultraviolet hluav taws xob los ntawm tshav ntuj tuaj yeem ua rau qee cov txheej txheem tiv thaiv hnub nyoog thiab hmoov; Kev hloov pauv kub hnyav tuaj yeem ua rau micro- tawg vim qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov txheej tiv thaiv thiab cov substrate.
Thaum cov tsoos kub-dip galvanized purlins muaj qee qhov kev tiv thaiv corrosion, lawv lub sijhawm tiv thaiv thiab kev ua haujlwm tseem yuav tsis txaus nyob rau hauv qhov xwm txheej hnyav uas tau hais los saum no lossis hauv cov xwm txheej uas xav tau cov qauv siab dua ntawm lub tsev zoo nkauj thiab ua haujlwm ntev. Anti-corrosion hmoov txheej yog qhov hloov kho tseem ceeb raws li qhov no, muab ntau yam zoo:
Txaus siab rau Kev Tiv Thaiv Kev Tiv Thaiv: Cov txheej tuab thiab ua tiav los ntawm cov hmoov txheej ua haujlwm zoo li "kev tiv thaiv kev tiv thaiv," lub cev cais cov hlau substrate los ntawm ib puag ncig sab nraud thiab tiv thaiv kev nkag mus ntawm noo noo, oxygen, thiab corrosive ions.
Cov huab cua tsis zoo: Cov hmoov txheej tshwj xeeb sab nraum zoov (xws li polyester-raws li) tiv thaiv UV hluav taws xob zoo, tswj cov xim thiab gloss rau lub sijhawm ntev, thiab nthuav tawm muaj zog tiv thaiv chalking thiab kev laus.
Cov khoom siv zoo tshaj plaws: Cov txheej txheem muaj zog adhesion rau cov hlau substrate thiab zoo toughness, ua rau nws resistant rau tawg los yog tev tawm thaum lub sij hawm thauj mus los, installation, los yog me me deformation.
Kev kho kom zoo nkauj nthuav dav: Cov hmoov coatings muaj ntau yam kev xaiv xim, tso cai rau kev hloov kho kom tau raws li qhov xav tau ntawm lub tsev tag nrho, ua cov khoom siv ua haujlwm yog ib feem tseem ceeb ntawm lub tsev qhov kev thov kom zoo nkauj.
Ib puag ncig tus phooj ywg: Cov hmoov siv nyob rau hauv cov txheej txheem electrostatic txau yog rov ua dua thiab ua kom zoo tsis muaj cov organic sib txuas, ua rau nws muaj kev sib raug zoo ntawm kev siv tshuab.
