Dab tsi yog qhov kev pabcuam lub neej ntawm galvanized kav?
Tsis muaj tus qauv ruaj ruaj rau kev pabcuam lub neej ntawm galvanized kav dej. Qhov tseem ceeb yog nyob ntawm cov txheej txheem galvanizing, kev ua haujlwm ib puag ncig, thiab txij nkawm. Qhov kev pabcuam lub neej feem ntau yog nyob nruab nrab ntawm 10 thiab 30 xyoo, thiab qee kis, tau tshaj 50 xyoo.
1. Cov ntsiab lus cuam tshuam loj: txiav txim ncaj qha lub neej
Cov yam sib txawv muaj qhov cuam tshuam tseem ceeb ntawm kev pabcuam lub neej. Cov hauv qab no yog lub luag hauj lwm tshwj xeeb ntawm cov khoom tseem ceeb:
Galvanizing txheej txheem: kub {- dip galvanizing yog farorior kom txias heev- dip galvanizing.
Kub - dip galvanized kav: Zinc txheej yog tsim los ntawm raus cov yeeb nkab steel hauv Molten Zinc. Cov txheej zinc txheej yog feem ntau 60-100μm tuab, muab cov nplaum nplaum muaj zog thiab cov tshuaj tiv thaiv corrosion zoo heev. Nyob rau hauv ib txwm muaj kev mob sab nraum zoov, cov kev pabcuam lub neej feem ntau 20-30 xyoo. Hauv cov av qhuav hauv tsev (xws li cov kav dej hauv tsev thiab cov txee nyob sab hauv tsev thiab lub neej pabcuam tuaj yeem tshaj 30 xyoo.
Txias - dip galvanized kav dej (tsuas yog 10 {}}}}}}}}}}}}}}}}} 30}}} Hauv qhov chaw nyob sab nraud lossis sab nraum zoov, kev ua kom huv si yuav tshwm sim tsis pub dhau 1-2 xyoos, ua rau muaj lub neej tag nrho ntawm ib txwm muaj 5-10 xyoo xwb. Kub-DIP galvanized cov kav dej tam sim no maj mam hloov thiab tsuas yog siv nyob rau hauv cov ntawv thov sab hauv tsev nrog kev tiv thaiv sab hauv tsev.
Kev siv ib puag ncig: corrosive corrosive, luv dua lub neej. Kev nyab xeeb, salinity, thiab qib PH hauv ib puag ncig yog qhov tseem ceeb ntawm cov kav dej corrosion, ua rau muaj kev sib txawv tseem ceeb ntawm cov chaw sib txawv:
Cov khoom siv dej huv si (xws li cov dej ntws thiab cov kav dej ntws tawm hauv cov chaw ua haujlwm thiab cov kav dej hauv sab hauv tsev): thiab cov kav dej sab hauv tau yooj yim tshaj 30 xyoo.
Sab nraum zoov chaw ib puag ncig (xws li billboards thiab txoj kev tsheb nyob rau hauv cov chaw nyob hauv av): kev los nag tab sis nrog cov kav dej kub qis} dip galvanized yog kwv yees li 15-25 xyoos.
Noo noo / siab {{{- pa qaub ncaug, ib ncig ntawm cov roj av tshuaj lom neeg, thiab cov pa dej hiav txwv kub): anti-corrosion xim). Kev Txij Nkawm: Kev saib xyuas ib txwm tuaj yeem txuas ntxiv rau lub neej ntawm galvanized kav dej.
Yog tias cov kav dej galvanized tsis tau tswj kom ntev, khawb lossis puas rau zinc txheej corrosion ("galvanic corrosion)).
Kev tshawb xyuas tsis tu ncua thiab RE - Thov tiv thaiv cov thaj chaw uas puas tuaj yeem ua rau muaj kev sib kis thiab txuas ntxiv ntawm lawv lub neej los ntawm 5 {}} 10 xyoo. Piv txwv li, Galvanized thav ntawv ntawm sab nraum zoov billboards tuaj yeem txuas ntxiv ntawm 20 xyoo los tshaj 25 xyoos los ntawm ib xyoos ib zaug ua ntawv thov cov xim pleev xim rau kev tiv thaiv corrosion.