Anticorrosion kho cov hlau: cov ntaub ntawv thiab kev siv tshuab

Txhawm rau kom cov hlau ua tau zoo, kev siv tshuaj kho los ntawm cov hlau thaiv los tiv thaiv. Cov txheej txheem no yog tsim los tiv thaiv cov qauv ntawm cov teebmeem ntawm kev txhoj puab heev thiab atmospheric nag lossis daus. Vim lub txheej, lub hlau ntws tseem cia nws cov khoom qub, nrog rau cov khoom siv zoo nkauj.

Tus essence ntawm tus txheej txheem

Corrosion yog cov txheej txheem ntawm cov tshuab ua hluav taws xob los ntawm cov hlau nrog thaj chaw, vim tias cov hlau yog oxidized thiab kev puas tsuaj. Cov kws kho mob hais tias qhov kev puas tsuaj ntawm kev txhaws hauv kev lag luam ncav cuag li 4% ntawm tag nrho cov khoom hauv lub teb chaws ntawm txhua lub teb chaws. Corrosion tshwm sim vim raug rau cov hlau ntawm oxygen, dej, thiaj li kho cov tshuaj tiv thaiv los ntawm kev kho cov hlau uas yuav tsum tau ua. Kev siv tshuab muaj feem xyuam rau kev kho cov hniav uas muaj nyias txheej hlau, hlau cov hlau los yog cov xim tsis sib xyaw.

Nta ntawm kev ua

Vim lub fact tias cov hlau pib zom zaws los ntawm ib qho chaw muaj kev txhoj puab heev, lub zog thiab lub cev muaj zog ntawm cov khoom siv hlau hloov lub zog. Thiab qhov no cuam tshuam qhov txo nyob rau hauv lawv cov functionality thiab durability. Corrosion contributes rau lub neej puas ntawm cov khoom siv, tsheb. Tias yog vim li cas los tiv thaiv corrosion ntawm cov txheej txheem hlau plays lub luag hauj lwm tseem ceeb, cov cuab yeej ntawm cov uas yog tas li yog modernized thiab zoo tuaj.

Sab nrauv ua haujlwm

Cov sab nrauv ntawm cov khoom hlau yog feem ntau raug rau kev cuam tshuam ntawm kev txhoj puab heev. Yuav tiv thaiv lawv, cov kev siv kev tiv thaiv yog siv. Lawv siv cov qauv tsim thiab ua khoom ntawm cov khoom tsim ua ntej txoj kev siv lub zog ntawm cov ntsiab lus hlau. Cov tswv yim tsim los ntawm kev xaiv ntawm cov khoom uas tuaj yeem tiv thaiv tau qhov teeb meem ntawm qhov chaw. Rau lub hom phiaj no, hlau nrog ib zaj yeeb yaj kiab, cov ntaub ntawv siab polymeric, ceramics, thiab iav zoo haum. Tsis tas li ntawd, kev kho los tiv thaiv kev txhim kho ntawm cov qauv hlau yog nrog cov tswv yim ntawm kev lag luam ntawm cov khoom:

• Kev tshem tawm cov kab nrawm, tawg, khoob uas tau nyob twj ywm hauv qhov khoom thiab los ntawm cov dej noo tuaj yeem nkag tau rau hauv;
• Liquidation ntawm cov aav uas noo noo tau stagnate;
• Kev tiv thaiv ntawm qhov chaw ntawm dej;
• Cov kev taw qhia txog cov neeg ua rau cov neeg ua haujlwm tsis zoo.

Passive tiv thaiv

Thaum ua ntawv thov kev tiv thaiv, qhov hlau ntim raug kho nrog ib co txheej txheem, uas yog los tiv thaiv kev sib txuas ntawm hlau thiab oxygen lossis hlau thiab noo noo. Rau qhov kawg no, kev kho corrosion ntawm hlau qauv yog nqa tawm. Cov ntaub ntawv rau qhov no yog siv niaj hnub, nrog kev ua haujlwm zoo tuaj. Tej co coatings ua ntau yam haujlwm:

• Teeb meem;
• Tread;
• Transformative;
• Passive.

Kev tiv thaiv tsis sib haum xeeb yuav raug cais tawm ntawm cov hlau. Feem ntau siv cov cuab yeej no ua rau cov hlau ua ferrous. Tab sis yog tias lub sam xeeb txog ntawm kev tiv thaiv ua yeeb yam yog ua txhaum, sub-pellicle corrosion tuaj yeem ua raws li nws.

Yam khoom dab tsi?

Thaum ib qho kev kho mob anticorrosive ntawm cov txheej txheem hlau, cov txhais tau raug xaiv kom zoo heev. Rau cov kis ntawm cov xim pleev xim thiab cov khoom vanish muaj phosphate acid lossis chromate pigments, uas qeeb tus txheej txheem corrosion, yog siv. Thaum tso npe rau daim ntawv pov thawj primers siv cov tshuaj tsuag. Nyob ntawm seb muaj pes tsawg yam hauv cov formulations no, lawv tuaj yeem siv rau kev ua cov hlau thiab cov hlau uas tsis yog ferrous.

Txoj kev ua haujlwm dhau los ua tau raws li kev tiv thaiv, tab sis qhov no, xim siv, uas muaj ntau tshaj li 86% ntawm cov hmoov av hlau tau tsim los ntawm ib qho kev ua kom muaj peev xwm zoo dua rau qhov sib txawv ntawm qhov kho. Feem ntau, thaum siv tshuaj kho los ntawm kev siv hlau thaiv, cov xim yog xaiv nrog txhaws ntawm nplua zinc hmoov. Qhov no technology yog hu ua khaub thuas galvanizing, uas tsub kom cov kev pab cuam lub neej ntawm ib tug hlau nto thiab nws kuj mus puas.

Lub raj mis thiab kua nplaum

Kev tiv thaiv ntawm cov qauv hlau yog nqa tawm ntawm 3 hom kev txhais tau tias:

• Paintwork coatings uas yooj yim thiab tsuas ua ntawv thov thiab muaj ntau yam xim. Nrog kev pab los ntawm cov xim, nws yog ua tau rau cov txheej txheem hlau ntawm cov qhov loj loj thiab muaj teeb meem.
• Cov tshuaj tiv thaiv yas los tiv thaiv coatings, uas yog raws li fluoroplastic, nylon, PVC. Cov kab ntawv no yog cov dej, cov kua qaub thiab cov kab mob hauv alkali.
• Coatings nrog roj hmab hauv lub hauv paus yog siv thaum qhov kev kho mob anticorrosive ntawm kev tso tsheb hlau luam thiab hlau ua los ntawm sab hauv.

Tiv thaiv kev tiv thaiv

Hlau yuav tsum muaj kev tiv thaiv tshwj xeeb, rau txoj kev ua ub no yog siv. Lub zog ntawm cov hlau ua rau sab nraud ua tiav:

• Kub-dip galvanizing ntawm qhov chaw: raws li qhov no technology yog ib feem yog thawj degreased, ces - sandblasted los yog etched nrog acid, raws li ib tug ntawm uas nws yog them nrog ib tug nyias zinc txheej. Cov tshuaj tiv thaiv ua rau tuaj tsim ntawm cov yeeb yaj kiab ntawm qhov hlau. Nws shields lub hlau thiab tiv thaiv nws los ntawm noo noo. Feem ntau cov feem ntau, kub-dip galvanizing yog siv rau cov kev ua ntawm loj khoom - tso tsheb hlau luam thiab cisterns.
• Los ntawm electrochemical galvanizing: txoj kev no yuav pom cov diffusion ntawm zinc ions los ntawm lub kua qaub qaug zog thaum lub caij sov. Galvanic ua cov txheej txheem hlau siv rau kev siv cov khoom kho vajtse, qhov chaw nruab nrab ntawm qhov loj.
• Thermo-diffusion deposition ntawm zinc txheej: nrog cov cuab yeej technology no, zinc atoms nkag mus rau hauv cov nplaim taws ntawm cov kab mob hauv siab. Qhov txheej yog cov ruaj khov thiab hnav-tiv taus, thiab thawj feem rov qab ua kom tiav, txawm hais tias qhov chaw npau npau nrog cov dej khov lossis nyem.

Anticorrosion kho ntawm cov hlau qauv yuav raug coj ntxiv rau kev tiv thaiv electrochemical.

Niaj hnub txoj kev

Ntau zaus tshaj tsis yog, xim coatings yog siv los tiv thaiv cov hlau ntsa ntawm corrosion, vim lawv pheej yig thiab yooj yim siv. Tab sis cov txheej txheem no yuav tsum tau kho txhua 5-7 xyoo, uas yog siv zog thiab kim. Thiab siv cov txujci galvanic thiab electrochemical yog kim heev, tab sis txog xeb yuav tsis nco qab txog li 50 xyoo.

Tias yog vim li cas ntau thiab ntau zaus los tiv thaiv corrosion ntawm hlau qauv yog tau nrog kev pab los ntawm "kua roj hmab". Nws yog ob qho khoom tiv thaiv uas muaj peev xwm muaj kev ruaj ntseg thiab muaj kev tiv thaiv qhov chaw tawm ntawm lwm qhov kev cuam tshuam. Kev siv ib qho elastomer tso cai rau daim ntawv thov ntawm ib txheej txheej membrane, uas yog siv phom tua. Roj Hmo sai sai ua rau lub ntsej muag, ua tsis muaj nuj nqis ntws los yog tsis sib luag. Thiab koj tuaj yeem ua haujlwm txawm tias muaj cov pa damp hlau. Cov lag luam ntawm cov khoom xws li hais tias xws li ib txheej yuav kav txog 20 xyoo tsis tau poob nws cov khoom qub.

Kev npaj deg

Txhim khu kev tiv thaiv ntawm hlau ntawm xeb tuaj yeem tau tiav yog tias qhov chaw tau npaj tau rau ntawm qib zoo lawm. Cov khoom rau anticorrosion kho mob ntawm cov txheej txheem hlau tsis nyuaj, vim li ntawd nws siv yuav tsis ua rau muaj teeb meem. Kev npaj deg yuav tsum tau ua kev kho mob los yog sib. Nrawm nrov yog cov tshuaj txoj kev, vim hais tias cov khoom siv dag zog tsis tuaj yeem muab cov khoom pov thaiv kom zoo. Tab sis cov cuab yeej tsim nyog yuav tsum tau xaiv nyob rau hauv raws li xaiv cov xim muaj hlau thiab cov kua roj vanish coatings thiab cov hauj lwm rau lawv cov haujlwm ntxiv.

Phosphating thiab chromating

Kev npaj ntawm hlau yog ua nyob ntawm seb hom hlau. Kev npaj ntawm cov hlau ferrous yog nqa los ntawm phosphating, thiab cov hlau tsis yog ferrous yog ua los ntawm ob txoj kev. Feem ntau, kev siv tshuaj ntawm ib qho hlau muaj ntau theem:

• Nto degreasing;
• Ntxuav nrog dej haus;
• Thov kev hloov txheej txheem;
• Rov ntws nrog dej haus;
• Ntxuav nrog cov dej haus demineralized;
• Passivation.

Tshuaj kho ntawm cov hlau yog nqa tawm los ntawm kev txau (blasting ntawm qis siab), immersion, dav hlau dav hlau thiab hydrojet txoj kev. Thawj ob txoj hau kev siv cov tshwj xeeb aggregates uas npaj lub hau. Txoj kev xaiv raug xaiv raws li kev tsim cov khoom, kev teeb tsa thiab qhov ntev ntawm cov khoom thiab ntau lwm yam.

Pipeline kev kho mob

Kev kho cov ntxhiab ntawm cov qauv hlau thiab cov kav dej yog ua tiav raws li cov qauv hauv xeev cov kev cai. Kev ua haujlwm yuav tsum nqa tawm ob qho tib si rau kev ua haujlwm, thiab thaum nws rov kho lossis kho. Pipelines tuaj yeem tiv thaiv tau los ntawm txoj kev ua ub no thiab kev siv lub cev - nws raug xaiv raws li txoj kev tso pov tseg. Rau cov kav dej tso rau saum lub ntiaj teb, cov ntaub ntawv uas tiv taus ib puag ncig raug siv. Nrog rau txoj hauv kev, qhov tiv thaiv saum npoo yog tsim muaj cov tshuaj uas muaj cuab kav tiv thaiv tau hluav taws xob ntawm cov txheej txheem. Pipeline kev tiv thaiv yog ua nyob rau hauv ntau theem:

1. Ua ntej, lub nplaim ntawm cov yeeb nkab tau thau tshem tawm cov tho insulating, xeb, nplai thiab tag nrho cov kab mob.
2. Anti-corrosive cov ntaub ntawv yog siv rau lub ntsa kom huv, thaum lub chaw ua haujlwm yuav nqa tawm ntawm qhov kub ntawm +5 degrees thiab ntawm cov av noo tsis ntau tshaj 80%.

Tom qab ua tiav txoj kev kho mob, koj yuav tsum ua tib zoo soj ntsuam lub raj xa dej kom pom cov kev ua txhaum, yog tias muaj, nyob ntawm qhov chaw. Cov khoom tshwj xeeb txiav txim siab seb qhov zoo ntawm cov nplaim thiab txheej kev sib txuas, qhov zoo ntawm cov xim nws tus kheej thiab lub thickness ntawm cov txheej txheem qhuav txheej txheem.

Tiv thaiv kom zoo thiab tiv thaiv

Anticorrosion kho cov hlau qauv, txoj cai uas nyob ntawm cov khoom siv uas siv tau, tuaj yeem ua nrog kev tiv thaiv thiab kev tiv thaiv kev tiv thaiv. Ob qho tag nrho cov kev xaiv yog tsom ntawm kev tiv thaiv hlau kav los ntawm teeb meem ib puag ncig teeb meem. Thiab yog tias cov yeeb nkab dej nyob hauv qhov tob tob, nws yuav tsum tiv thaiv cov hlau ntawm kev sib chwv nrog hauv av. Ua tsaug rau cov txheej txheem ntawm cov xim, cov kua roj vanish, kua txig, qhov muaj teeb meem nrawm thiab muaj zog heev yog tsim, uas tiv thaiv qhov chaw ntawm qhov tsis zoo ntawm lwm qhov chaw sab nraud.

Kev kho cov kav dej feem ntau yog ua nrog hmoov tshuaj raws li cov khoom yas. Lawv tau ua ntawv thov rau cov yeeb nkab, uas yog preheated rau ib qho kub.

Yog li, nqa tawm ntawm kev kho mob anticorrosion yog ib lub sijhawm los tiv thaiv qhov xeb xaim ntawm cov pa hlau. Muaj ntau hom kev xaiv thiab kev ua - ib qho lees paub tias koj tuaj yeem tiv thaiv txhua yam kav dej thiab tsheb mus rau ib qho me me.