Cov kav hlau hlau tau siv dav hauv ntau yam kev lag luam, suav nrog roj, roj, thiab kev thauj mus los hauv dej. Txawm li cas los xij, cov kav dej steel muaj qhov cuam tshuam rau corrosion, uas tuaj yeem txo lawv txoj sia thiab kev ua haujlwm zoo. Hmoov zoo, kev siv thev naus laus zis los tiv thaiv corrosion tau tsim los tiv thaiv cov kav hlau los ntawm corrosion thiab ua rau lawv lub neej ua haujlwm ntev.
Muaj ntau yam kev tiv thaiv corrosion rau cov kav hlau, nrog rau txheej txheej, qhwv, thiab tiv thaiv cathodic. Txheej txheej yuav siv cov txheej txheem tiv thaiv, xws li epoxy, polyethylene, lossis polypropylene, mus rau saum npoo ntawm cov yeeb nkab steel. Cov txheej txheej tsim ib qho kev thaiv ntawm cov hlau thiab qhov chaw corrosive, tiv thaiv kev tsim ntawm xeb thiab corrosion.
Wrapping yuav tsum qhwv cov yeeb nkab steel nrog cov khoom siv tiv thaiv, xws li daim kab xev lossis zaj duab xis, los tsim ib qho kev thaiv ntawm cov yeeb nkab thiab qhov chaw corrosive. Wrapping feem ntau yog siv ua ke nrog txheej rau kev tiv thaiv ntxiv.
Kev tiv thaiv Cathodic suav nrog kev siv hluav taws xob tsawg tam sim no rau cov yeeb nkab steel los tiv thaiv corrosion. Txoj kev no ua haujlwm los ntawm kev tsim hluav taws xob hluav taws xob ntawm cov yeeb nkab steel thiab cov khoom siv hluav taws xob, uas corrodes es tsis txhob siv cov yeeb nkab steel.
Ntxiv nrog rau cov thev naus laus zis no, kev saib xyuas tsis tu ncua thiab kev tshuaj xyuas cov kav hlau steel yog qhov tseem ceeb los xyuas kom meej lawv lub neej ntev. Qhov no suav nrog kev tu thiab kho tej yam kev puas tsuaj rau cov txheej los yog qhwv, hloov cov anodes sacrificial, thiab saib xyuas tus nqi corrosion.
Zuag qhia tag nrho, anti-corrosion technology tau zoo heev txhim kho lub neej ntev thiab efficiency ntawm steel kav. Los ntawm kev siv cov thev naus laus zis no thiab xyaum ua haujlwm tsis tu ncua, peb tuaj yeem ua kom ntseeg tau tias cov kav dej steel tseem yog ib txoj hauv kev txhim khu kev qha thiab zoo ntawm kev thauj cov kua thiab roj.
Cov kav hlau yog dav siv los nqa cov kua dej xws li dej, roj, thiab roj hauv ntau yam lag luam. Txawm li cas los xij, corrosion yog ib qho ntawm cov teeb meem loj uas tuaj yeem ua rau qhov zoo thiab lub neej ntev ntawm cov kav hlau. Yog li ntawd, kev siv tshuab los tiv thaiv corrosion yog qhov tseem ceeb los tiv thaiv cov kav hlau los ntawm corrosion thiab ua kom lawv lub neej ntev. Nov yog qee qhov nrov los tiv thaiv corrosion technologies siv rau cov kav dej steel.
1. Txheej: Txheej yog ib qho kev siv tshuaj tiv thaiv corrosion siv rau cov kav hlau. Cov ntaub ntawv txheej muaj xws li zinc, epoxy, polyurethane, thiab lwm yam. Cov coatings no tsim ib qho kev thaiv ntawm cov hlau nto thiab qhov nruab nrab corrosive, yog li tiv thaiv cov hlau los ntawm corrosion.
2. Kev tiv thaiv Cathodic: Kev tiv thaiv Cathodic yog cov txheej txheem siv los tiv thaiv cov kav hlau los ntawm kev tsim cov hluav taws xob hluav taws xob. Lub sacrificial anode ua los ntawm cov hlau ntau dua li cov hlau txuas nrog cov yeeb nkab steel thiab corrodes es tsis txhob siv cov hlau. Yog li, kev tiv thaiv cathodic tuaj yeem tiv thaiv corrosion.
3. Corrosion Inhibitors: Corrosion inhibitors yog cov tshuaj uas tuaj yeem ntxiv rau cov kua dej uas ntws los ntawm cov yeeb nkab. Cov inhibitors tiv thaiv cov tshuaj tiv thaiv ntawm cov kua thiab cov hlau, yog li tiv thaiv corrosion.
4. Yas Txheej: Yas txheej yog cov cuab yeej tiv thaiv corrosion zoo siv rau cov kav hlau. Cov khoom siv thermoplastic yog yaj thiab txau rau ntawm qhov chaw steel. Cov txheej yas tiv thaiv cov hlau los ntawm kev sib cuag nrog corrosive nruab nrab, yog li tiv thaiv cov hlau los ntawm corrosion.
Hauv kev xaus, kev siv thev naus laus zis los tiv thaiv corrosion yog qhov tseem ceeb rau kev tiv thaiv cov kav hlau los ntawm kev degradation. Cov cuab yeej siv yog nyob ntawm hom kua dej uas ntws los ntawm cov yeeb nkab, ib puag ncig, thiab kev siv nyiaj txiag. Yog li ntawd, nws yog ib qho tseem ceeb los xaiv qhov tsim nyog los tiv thaiv corrosion technology los xyuas kom meej lub neej ntev ntawm steel kav.
Cov kav hlau hlau tau siv dav hauv ntau yam kev lag luam xws li roj thiab roj, kev tsim kho, thiab kev thauj mus los. Txawm li cas los xij, yog tias tsis muaj kev tiv thaiv, cov kav hlau steel muaj qhov cuam tshuam rau corrosion uas tuaj yeem txo lawv txoj sia thiab ua rau raug nqi kho lossis hloov pauv. Txhawm rau kom lub neej ntev ntawm cov kav dej steel, cov txheej txheem tiv thaiv corrosion yog ua haujlwm. Nov yog qee qhov feem ntau siv los tiv thaiv corrosion txheej thev naus laus zis siv rau ntawm cov kav dej steel:
1. Epoxy txheej: Epoxy txheej feem ntau yog siv los tiv thaiv cov kav hlau los ntawm corrosion. Lawv paub txog lawv cov tshuaj tiv thaiv siab thiab adhesion zoo heev. Lawv muab qhov nyuaj thiab ruaj khov rau corrosion thiab tiv taus abrasions, tshuaj, thiab huab cua. Epoxy txheej tuaj yeem siv rau hauv cov txheej nyias lossis tuab thiab tuaj yeem ua raws li cov kev cai tshwj xeeb.
2. Polyethylene Txheej: Polyethylene txheej yog ib qho kev xaiv nrov rau cov kav dej hauv av. Lawv raug tsim los ntawm kev siv cov cua sov rau cov khoom siv polyethylene uas tom qab ntawd qhwv ib ncig ntawm cov yeeb nkab steel. Polyethylene coatings yog heev resistant rau dej, av, thiab tshuaj corrosion. Lawv kuj paub txog lawv qhov yooj yim hauv kev thov thiab kev saib xyuas.
3. Coal Tar Coatings: Coal tar coatings yog ib qho ntawm cov khoom qub tshaj plaws los tiv thaiv corrosion txheej tshuab siv rau cov kav hlau. Lawv muab kev tiv thaiv zoo rau dej, av, thiab tshuaj lom neeg corrosion thiab tuaj yeem tiv taus qhov kub txog li 120 degree. Coal tar coatings kuj tiv taus abrasions ua rau lawv zoo tagnrho rau siv nyob rau hauv ib puag ncig hnyav.
4. Zinc Txheej: Zinc coatings yog electroplated rau steel kav los muab kev tiv thaiv zoo heev tiv thaiv corrosion. Lawv muaj peev xwm tiv taus oxidation thiab tuaj yeem tiv thaiv xeb tsim. Zinc coatings kuj ua raws li kev txi anode, tiv thaiv cov yeeb nkab steel ntawm corrosion los ntawm kev txi lawv tus kheej hauv cov txheej txheem. Cov txheej txheem no hu ua cathodic tiv thaiv.
Hauv kev xaus, cov txheej txheem los tiv thaiv cov txheej txheem siv rau cov kav dej steel ua lub luag haujlwm tseem ceeb hauv kev ua kom cov kav ntev thiab kav ntev. Nrog rau cov thev naus laus zis saum toj no, cov kav hlau steel tuaj yeem tiv taus qhov chaw hnyav thiab nyob twj ywm ua haujlwm tau ntau xyoo tom ntej. Nws yog ib qho tseem ceeb uas yuav tau xaiv cov txheej txheem txheej txheej zoo raws li daim ntawv thov thiab ib puag ncig kom ntseeg tau tias muaj kev tiv thaiv zoo tiv thaiv corrosion.
