Pipeline corrosion yog ib qho teeb meem loj heev, yuav tsum tau txais kev pom zoo los tiv thaiv kev tiv thaiv kom tsis txhob muaj lossis txo qhov tshwm sim. Feem ntau, cov txheej txheem tseem ceeb ntawm kev tiv thaiv corrosion hauv cov kav hlau yog siv cov tshuaj tiv thaiv corrosive, sib npaug thiab ntom ntom txheej txheej hlau tshem tawm xeb nrog xim, lossis siv cov txheej zoo sib xws rau cov phab ntsa sab hauv ntawm cov kav dej. Txawm li cas los xij, txawm hais tias qee cov kav hlau tau dhau los ua kev tiv thaiv corrosion, qhov no tsis tuaj yeem lav lub neej ua haujlwm ntev. Yog li, dab tsi cuam tshuam rau lub neej kev pab cuam ntawm cov kav dej tiv thaiv corrosion? Yam twg yog qhov tseem ceeb? Peb yuav daws qhov teeb meem no li cas?
Txhawm rau ua kom lub neej ntev ntawm cov kav dej los tiv thaiv corrosion, kev xaiv ntawm kev tiv thaiv corrosion ua lub luag haujlwm tseem ceeb. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau siv cov khoom zoo los tiv thaiv corrosion thiab txoj kev. Tshwj xeeb, qhov no suav nrog ob lub ntsiab lus tseem ceeb:
(1) Txhawm rau txuas ntxiv kev pab cuam lub neej ntawm cov kav dej los tiv thaiv corrosion, kev xaiv cov khoom siv los tiv thaiv corrosion yog qhov tseem ceeb.
Cov khoom siv tseem ceeb siv los tiv thaiv corrosion yog coal tar enamel xim, uas muaj kev tiv thaiv zoo dua rau cov kav dej. Txawm li cas los xij, cov ntaub ntawv no muaj ntau qhov tsis zoo uas txwv lawv qhov kev thov ntau yam. Hmoov zoo, nrog rau txoj kev loj hlob ntawm tib neeg, qhov tshwm sim ntawm epoxy resin los tiv thaiv corrosion fusion hmoov coatings tau propelled sai sai nyob rau hauv pipeline tiv thaiv technology.
Thawj qhov zoo ntawm epoxy resin los tiv thaiv corrosion fusion hmoov txheej yog nyob rau hauv lawv cov corrosion kuj zoo heev, txhua yam khoom, thiab muaj zog tiv thaiv cathodic disbondment. Ua ke ib txheej, ob txheej, thiab triple-txheej hnyav-txheej epoxy hmoov coatings nyob rau hauv ib tug anti-corrosion qauv maximizes kev tiv thaiv ntawm steel yeeb nkab pawg, mitigates corrosion, thiab zoo tsim los tiv thaiv corrosion kav thiab lined kav. Kev pov thawj zoo, txoj kev no yog qhov tseeb, kev tshawb fawb, thiab tsim nyog rau kev tiv thaiv corrosion ntawm cov kav dej hauv av lossis cov kav dej hauv qab.
(2) Kev kho kom zoo los tiv thaiv corrosion yog qhov tseem ceeb rau kev ua haujlwm ntev ntawm cov kav dej los tiv thaiv corrosion.
Thaum ua kev kho los tiv thaiv corrosion ntawm cov kav hlau, cov ntsiab lus hauv qab no yuav tsum raug sau tseg:
Deg pretreatment yuav tsum tau txau cov hlau nto ntawm cov phab ntsa sab hauv thiab sab nraud ntawm cov kav hlau siab kom tshem tawm cov xeb, thiab kev ua haujlwm yuav tsum tau ua nyob rau hauv ib qho chaw kaw hauv tsev. Rau kev tshem tawm xeb loj, xeb tshem tawm lossis tshuab siv tau. Cov tshuab xeb tshem tawm los ntawm kev xuab zeb blasting thiab lwm txoj hauv kev txhim kho kev ua haujlwm ntawm kev ua haujlwm thiab txo cov pa phem rau tib neeg thiab huab cua. Thaum yuav tsum muaj kev tiv thaiv corrosion zoo dua lossis cov phab ntsa sab hauv thiab sab nraud ntawm cov yeeb nkab twb xeb lawm, cov tshuaj xeb tshem tawm tuaj yeem siv los tshem tawm cov oxides ntawm cov yeeb nkab sab hauv thiab sab nrauv.
Tom qab dhau qhov kev soj ntsuam zoo rau kev kho ntawm cov phab ntsa sab hauv ntawm cov yeeb nkab steel, pleev xim yuav tsum tau ua kom sai. Kev pleev xim yuav tsum nruj me ntsis ua raws li cov lus qhia los ntawm cov chaw tsim tshuaj pleev xim. Cov txheej yuav tsum tau ua kom tiav hauv 4 teev nyob rau hauv tshav ntuj los yog nruab nrab ntawm cov av noo, thiab cov tshuaj tsuag pleev xim yuav tsum ua kom tiav hauv 8 teev.
