Dawb xeb yog qhov tshwm sim tom qab galvanizing. Lub luag haujlwm rau nws txoj kev tiv thaiv yog nyob rau hauv qhov uas nws tau ntim, tuav thiab khaws cia ua ntej cov khoom siv galvanized installation thiab siv. Lub xub ntiag ntawm xeb dawb tsis yog ib qho kev xav ntawm galvanized txheej qhov kev ua tau zoo, tab sis yog lub luag haujlwm ntawm txhua tus neeg koom nrog hauv cov khoom siv los xyuas kom meej tias qhov ua rau ntawm xeb dawb raug lees paub thiab qhov kev pheej hmoo ntawm nws qhov tshwm sim txo qis ntawm cov hlau tshiab galvanized. Thaum nws los txog rau Tuam Tshoj kub dipped galvanized yeeb nkab, qhov twg cov hlau galvanized freshly raug rau cov dej ntshiab (los nag, dew los yog condensation), nyob rau hauv ib qho chaw uas tsis muaj oxygen, cov dej yuav txuas ntxiv mus rau cov zinc thiab nce cov txheej txheem. Feem ntau cov mob uas xeb dawb tshwm sim yog nrog cov khoom siv galvanized uas tau zes ua ke, ntim nruj, lossis thaum dej tuaj yeem nkag mus ntawm cov khoom thiab nyob twj ywm rau lub sijhawm ntev.
Feem ntau, cov dej ntshiab (H2O) tsis muaj cov ntsev yaj los yog cov zaub mov thiab zinc yuav hnov mob sai sai nrog cov dej ntshiab los tsim zinc hydroxide, ib qho loj dawb thiab tsis ruaj tsis khov oxide ntawm zinc. Steel conduit muaj ib tug nyias txheej ntawm zinc fused rau steel substrate. Qhov kev sib xyaw ua ke no muab cov khoom siv uas muaj cov khoom siv hluav taws xob ntawm cov hlau txhim kho nrog cov corrosion kuj ntawm zinc. Txawm li cas los xij, thaum lub galvanized nto tau raug tawm tsam thiab cov zinc hydroxide compounds tau tsim, nws yog ntshaw kom tshem tawm cov khoom oxide ntawm qhov chaw vim: 1) lawv lub xub ntiag inhibits qhov tsim ntawm ruaj khov carbonate raws li oxides; 2) lawv tsis zoo.
Hais txog txias dov steel yeeb nkab, re-passivating lub galvanized nto yog ib qho tseem ceeb heev kev kho mob rau steel yeeb nkab nyob rau hauv kev pab cuam. Tshwj xeeb, qhov chaw dawb rusting tau tshwm sim thiab cov khoom yuav raug txuas mus ntxiv uas tuaj yeem nthuav tawm zoo li corrosion, rov ua kom lub ntsej muag tuaj yeem ua tiav los ntawm kev kho qhov chaw nrog kev daws ntawm 5% sodium dichromate 0.1% sulfuric acid, txhuam nrog ib qho tawv txhuam txhuam rau 30 vib nas this ua ntej ua kom huv si ntawm qhov chaw. Raws li ib tug kws tshaj lij Tuam Tshoj steel tube chaw tsim tshuaj paus nyob rau hauv Suav teb, peb xav muab ib tug xov tooj ntawm cov kauj ruam yooj yim uas yuav txo tau los yog tshem tawm cov tsim ntawm dawb xeb raws li nram no rau koj inference:
• Khaws cov khoom ntim khoom kom qhuav
• Ntim cov khoom kom tso cai rau huab cua ncig ntawm qhov chaw
• Muab cov khoom ntim ntim cia kom cov dej ntws tawm
• Kho qhov chaw nrog cov khoom tiv thaiv dej los yog cov txheej txheem thaiv kom tsis txhob ya raws kev sib cuag nrog galvanized nto
Xa koj cov lus rau peb:
Post lub sij hawm: Aug-20-2018
