- Feem ntau siv los tiv thaiv corrosion txheej hom thiab kev sib piv rau cov kav dej phwj tuaj:
1. Hom kev tiv thaiv corrosion
a. Epoxy coal pitch anti-corrosion txheej: Nws yog tsim los ntawm epoxy resin, thee pitch, curing agent thiab anti-xeb xim. Nws muaj lub zog siab, kev ua haujlwm zoo rwb thaiv tsev, dej tsis kam, tiv thaiv tshav kub, tiv thaiv corrosion thiab antibacterial zog. Haum rau kev tiv thaiv corrosion ntawm cov kav dej hauv qab thiab cov qauv hlau. Kev tsim kho yog qhov yooj yim, siv cov txheej txheem txias txias, kev ua haujlwm nyab xeeb, thiab siv tshuab tsawg dua.
b. Polyethylene txheej: Polyethylene yas yog thermoformed nyob rau saum npoo ntawm cov yeeb nkab los ntawm cov cav tov tshwj xeeb los tsim ib lub plhaub yas tawv uas nruj nreem khi rau cov yeeb nkab phab ntsa. Nws muaj daim ntawv thov kev ua tau zoo, txhua yam muaj zog thiab siv tau qhov kub thiab txias. Nws yog ib qho ntawm cov tshuaj tiv thaiv corrosion nrog kev ua tau zoo heev.
c. Epoxy resin txheej: Muaj ntau ntau hom epoxy resin los tiv thaiv corrosion, xws li epoxy dej-raws li txheej thiab epoxy hmoov txheej. Ntawm lawv, epoxy hmoov txheej txau hmoov rau hauv cov yeeb nkab kho kom tsim tau cov yeeb yaj kiab tsis tu ncua thiab muaj zog tiv thaiv corrosion. Thermosetting epoxy hmoov txheej yog tsim rau cov kav dej los tiv thaiv corrosion nyob rau hauv ib puag ncig hnyav, xws li cov av ntsev thiab cov alkali siab, cov dej hiav txwv siab thiab cov suab puam. Epoxy dej-raws li txheej yog siv rau cov kav dej los ntawm txhuam los yog cov menyuam kom ua tiav kev tiv thaiv corrosion. Cov ntaub ntawv no yuav tsum ua kom tau raws li cov kev xav tau ntawm kev noj qab haus huv thiab kev nyab xeeb thaum siv hauv cov kav dej haus.
2. Anti-corrosion kev sib piv:
Raws li qhov yuav tsum tau muaj ntawm Kev Tiv Thaiv-corrosion Design Specification rau Petrochemical Equipment and Pipeline Coatings (SH/T 3022-2011), anti-corrosion properties of different anti-corrosion materials vary in various conditions.
Nyob rau hauv ib puag ncig sib txawv, qhov kev tiv thaiv corrosion ntawm peb cov khoom siv los tiv thaiv corrosion yog txawv, tab sis lawv tuaj yeem siv tau raws li kev tiv thaiv corrosion.
Txoj kev kuaj adhesion rau peb cov khoom sib txawv. Epoxy thee pitch, epoxy resin hmoov, thiab epoxy resin coatings dhau txoj kev hla-hatch (GB9286-1998) los kuaj qhov adhesion. Lub adhesion ntawm epoxy coal suab thiab epoxy resin hmoov yog ntsuas 1-3, thiab epoxy resin txheej yog tsim nyog. Lub adhesion yog tsim nyog yog tias nws nyob rau theem 1-2. Txoj kev kuaj rau polyethylene yog txoj kev dynamometer (GB/T 28897-2012). Yog tias qhov adhesion ntau dua 30N, nws tsim nyog.
3. Anti-corrosion qib:
Rau qhov sib txawv nteg ib puag ncig, cov ntaub ntawv sib txawv los tiv thaiv corrosion thiab sib txawv los tiv thaiv corrosion txheej thicknesses yog siv.
- Cov yeeb nkab tso
1. Cov kav dej faus: Cov qib sib txawv tiv thaiv corrosion tau txais raws li cov av sib txawv corrosion.
2. Cov kav dej pov tseg: Cov kav xa dej tawm feem ntau yuav tsum xav txog cov huab cua tiv thaiv corrosion thiab huab cua tsis kam ntawm cov khoom siv tiv thaiv corrosion, yog li kev txhim kho qib ntawm kev tiv thaiv corrosion feem ntau yog siv.
3. Cov kav dej hauv dej: Cov kav dej hauv dej feem ntau tau txais kev txhim kho tshwj xeeb ntawm kev tiv thaiv corrosion, coj mus rau hauv tus account qhov nyuaj ntawm kev kho cov kav dej hauv qab thiab qhov corrosiveness ntawm cov dej nyoos.
4. Internal anti-corrosion: Internal anti-corrosion feem ntau txais cov qib zoo tib yam los tiv thaiv corrosion, xws li thaum nws siv los thauj cov dej huv.
- Anti-corrosion ua haujlwm:
Rau cov khoom siv tiv thaiv corrosion sib txawv, cov txheej txheem tsim kho thiab cov kauj ruam sib txawv. Nov yog qee qhov piv txwv ntawm kev ua haujlwm tiv thaiv corrosion:
1. Kev tiv thaiv corrosion ntawm epoxy coal pitch thiab epoxy water-based coatings suav nrog cov kauj ruam ntawm kev tshem tawm xeb, primer, topcoat thiab iav ntaub. Kev tshem tawm xeb yog ib qho ntawm cov kauj ruam tseem ceeb, thiab txoj kev siv lub cev ntawm sandblasting thiab xeb tshem tawm tuaj yeem siv.
2. Txoj kev tsim kho ntawm polyethylene txheej thiab epoxy hmoov txheej yog tshwj xeeb, uas yuav tsum tau cua sov cov yeeb nkab thiab txau hmoov rau ntawm cov yeeb nkab, thiab tom qab ntawd cov hmoov melts los ua cov txheej txheem tiv thaiv corrosion.
- Txais:
Tom qab kev tiv thaiv corrosion ua tiav, cov kav dej yuav tsum raug tshuaj xyuas thiab txais. Cov qauv kev lees paub txawv raws li cov khoom siv los tiv thaiv corrosion. Kev ntsuam xyuas xws li adhesion, thickness thiab spark tests yog yuav tsum tau los xyuas kom meej qhov zoo ntawm anti-corrosion txheej.
1. Kev lees txais los tiv thaiv corrosion ntawm epoxy dej-raws li txheej txheej yog raws li: GBT 31361-2015 Cov txheej txheem tiv thaiv corrosion rau cov kuab tshuaj tsis muaj epoxy kua coatings, uas feem ntau suav nrog cov qauv ntsuas, hluav taws xob hluav taws xob kuaj thiab ntsuas ntsuas thickness .
2. Cov txheej txheem polyethylene thiab epoxy hmoov txheej yuav tsum ua raws li cov kev cai cuam tshuam ntawm CJ/T 120-2015 cov kav dej yas-coated composite steel kav rau dej. Feem ntau muaj kev sim tensile (adhesion), kev ntsuas thickness thiab kev sim hluav taws xob.
