1.Dab tsi yog xeb dawb?
Dawb xeb yog thawj cov khoom ntawm corrosion ntawm galvanized txheej nyob rau hauv ib qho av noo, tsis zoo ventilated ib puag ncig. Nws cov khoom tseem ceeb yog zinc carbonate thiab zinc hydroxide. Nws tuaj yeem nkag siab tias yog "kab mob ntawm daim tawv nqaij" ntawm zinc; Nws yog pov thawj tias zinc tau txi nws tus kheej los tiv thaiv lub hauv paus steel, tab sis nws kuj txhais tau hais tias cov txheej txheej sab nraud ntawm zinc tau noj.
2.Dab tsi yog qhov cuam tshuam ntawm cov xeb dawb me me (me me ntawm cov hmoov dawb lossis grey rau ntawm qhov chaw, tsis muaj blemishes)?
Kev cuam tshuam: me me heev, yuav luag tsis saib xyuas.
Ua rau: Cov xeb dawb no tsuas yog tshwm sim ntawm txheej zinc txheej sab nraud. Tom qab ntxuav tawm cov hmoov, ib cheeb tsam loj ntawm cov zinc txheej tseem nyob hauv qab. Kev tiv thaiv corrosion ntawm galvanized coils nyob ntawm feem ntau ntawm cov tuab ntawm zinc txheej ntxiv; qhov tsis txaus ntseeg ntawm cov txheej txheej saum npoo muaj qhov cuam tshuam me ntsis rau tag nrho "sacrificial anode" kev tiv thaiv.
Txoj Kev Ntxuav: Tsuas yog so nrog ib daim ntaub huv, mos, txhuam mos, lossis txhuam hniav nylon.
3.Dab tsi yog qhov cuam tshuam ntawm cov xeb dawb hauv nruab nrab?
Impact Level: Qee qhov cuam tshuam; nws yuav luv lub neej ntawm cov txheej txheem tiv thaiv corrosion.
Ua rau: Dawb xeb tau nkag mus tob rau hauv cov zinc txheej, ua rau thaj tsam corrosion. Tom qab ntxuav tawm cov khoom siv corrosion, cov zinc txheej hauv cov cheeb tsam no yuav dhau los ua thinner, muaj peev xwm txawm nthuav tawm cov zinc - hlau alloy txheej. Txawm hais tias qhov kev tiv thaiv tag nrho tseem nyob ruaj khov, cov thinned me ntsis yuav dhau los ua cov ntsiab lus tsis muaj zog uas zoo dua rau yav tom ntej.
Txoj kev ntxuav: yuav tsum tau ntxuav kom huv si ntxiv, xws li siv cov tawv tawv- txhuam txhuam los yog txhuam txhuam. Tom qab ntxuav, nws raug nquahu kom kuaj xyuas qhov chaw rau qhov poob ntawm qhov tuab.
4.Dab tsi yog qhov cuam tshuam ntawm cov xeb dawb loj (ntau ntawm cov pob dawb tso rau saum npoo, nrog cov xim liab lossis xim av xeb tshwm)?
Qhov hnyav ntawm qhov cuam tshuam: Kev cuam tshuam loj heev, nrog rau qhov txo qis hauv corrosion kuj.
Ua rau: Qhov no qhia tau hais tias cov xeb dawb tau ua tiav tag nrho cov zinc txheej ntshiab ntawm qhov chaw thiab tseem tau nkag mus rau zinc - hlau alloy txheej; steel substrate tej zaum yuav tau pib xeb (liab xeb). Kev ntxuav cov xeb dawb ntawm qhov no yuav nthuav tawm thaj tsam loj ntawm cov hlau substrate. Txawm tias ntxuav, txheej galvanized nyob rau hauv qhov chaw tau poob nws lub peev xwm tiv thaiv, thiab cov xeb liab yuav kis tau sai heev.
Txoj kev tu: Cov txheej txheem siv tshuab (xws li txhuam hlau thiab ntawv xuab zeb) yuav tsum tau ua kom muaj zog, tab sis txoj kev no yuav ua rau cov txheej txheem zinc nyob ib puag ncig puas. Kev tiv thaiv xeb thib ob, xws li txau nrog zinc- cov xim nplua nuj, yog qhov tsim nyog tom qab ntxuav; txwv tsis pub, thaj chaw yuav xeb sai dua.
5.Dab tsi yog qee qhov kev pom zoo ntxuav?
Pom zoo: Siv cov cuab yeej tsis yog{0}}hlau (cov ntaub mos, txhuam, txhuam txhuam) kom qhuav los yog ntub dej me ntsis. Tom qab ntxuav, nco ntsoov kom qhuav qhov chaw kom huv si thiab xyuas kom muaj cua zoo kom tsis txhob rov tshwm sim ntawm cov xeb dawb.
Tsis pom zoo: Tsis txhob siv cov cuab yeej siv hlau tawv (xws li cov ntaub plaub, cov txhuam hlau), vim qhov no yuav ua rau khawb thiab tshem tawm cov txheej zinc tsis zoo, ua rau "dhau- ntxuav" thiab ua kev puas tsuaj ntau dua li qhov zoo.
Siv cov kua qaub pickling nrog ceev faj: Txawm hais tias cov kua qaub diluted (xws li acetic acid) tuaj yeem yaj cov xeb dawb sai sai, nws yog qhov nyuaj heev los tswj thiab tuaj yeem yooj yim dua - corrode cov zinc txheej tsis zoo, ua rau lub ntsej muag dub thiab ua ntxhib, ua rau nws cov corrosion kuj. Tshwj tsis yog rau kev kho mob, nws tsis pom zoo siv.