Nrog nws zoo heev corrosion kuj, siab zog, thiab stability, corrosion-resistant LSAW kav yog dav siv nyob rau hauv corrosive ib puag ncig xws li roj thiab roj tsheb thauj mus los, marine engineering, chemical pipelines, thiab cov kav dej hauv nroog thiab cov kav dej. Xaiv qhov siab -zoo, ruaj corrosion-resistant LSAW kav yuav tsum tau tsom rau plaub yam tseem ceeb: khoom, tiv thaiv- txheej txheem corrosion, zoo kuaj, thiab daim ntawv thov scenario haum. Kev zam kev xaiv qhov teeb meem thiab ua tib zoo tswj txhua kauj ruam yog qhov tseem ceeb kom ntseeg tau tias cov kav dej ua tau raws li cov kev xav tau ntawm kev siv, ua kom ntev kev pab cuam lub neej, thiab txo cov nqi tu tom ntej.
Thaum xaiv high-zoo tiv thaiv-corrosion LSAW kav, thawj kauj ruam yog kom nruj me ntsis tswj qhov zoo ntawm lub hauv paus khoom, raws li nws yog lub hauv paus ntawm cov yeeb nkab kav. High-zoo tiv thaiv-corrosion LSAW kav siv high-lub zog qis- carbon alloy steel los yog siab- zoo carbon steel raws li cov khoom siv hauv paus. Cov khoom siv tsis sib xws, tsis muaj slag inclusions, tawg, thiab xeb, thiab nws lub zog tensile thiab compressive raws li cov qauv hauv lub tebchaws, ua rau nws tiv taus siab thiab ua haujlwm nyuaj. Thaum lub sij hawm kev yuav khoom, nws yog ib qho tsim nyog yuav tsum tau thov cov chaw tsim khoom kom muab cov ntaub ntawv soj ntsuam zoo rau cov khoom siv hauv paus, txheeb xyuas cov khoom siv tshwj xeeb, cov khoom siv kho tshuab, thiab lwm yam tsis zoo kom tsis txhob xaiv cov kav dej ua los ntawm cov khoom tsis zoo lossis muaj cov impurities ntau dhau.
Qhov thib ob, tus txheej txheem ntawm kev tiv thaiv - txheej txheem corrosion yuav tsum tau ua tib zoo tshuaj xyuas. High-kev tiv thaiv zoo-corrosion LSAW kav yuav tsum muaj qhov ua tiav ntawm "substrate pretreatment + core txheej + auxiliary tiv thaiv." Substrate pretreatment muaj peb kauj ruam: tua blasting kom tshem tawm xeb, degreasing, thiab ziab, kom huv si thiab ntxhib nto rau txheej adhesion. Cov tub ntxhais tiv thaiv -corrosion txheej yuav tsum raug xaiv raws li daim ntawv thov scenario. Rau me me mus rau nruab nrab corrosion, kub-dip galvanizing yog tsim, uas ua rau ib tug zoo zinc txheej thickness thiab muaj zog adhesion. For severe corrosion, 3PE anti-corrosion coating or epoxy coal tar coating is preferred, ensuring a dense, unspecified, and bubble-free coating. Thaum lub sij hawm kev yuav khoom, cov ntaub ntawv tsim kho ntawm kev tiv thaiv - txheej txheem corrosion yuav tsum raug tshuaj xyuas kom paub meej tias cov txheej txheem txheej txheej thiab cov txheej txheem tsim ua tau raws li cov qauv.
Tsis tas li ntawd, txheeb xyuas daim ntawv tshaj tawm kev soj ntsuam zoo thiab cov chaw tsim khoom tsim nyog los tshem tawm cov khoom tsis zoo. High-kev tiv thaiv zoo-corrosion LSAW kav yuav tsum tau kuaj xyuas kom zoo, suav nrog kev sim substrate, tiv thaiv- kev kuaj corrosion txheej, thiab kev ntsuas vuam. Lawv yuav tsum muaj daim ntawv pov thawj cov khoom tiav thiab cov ntaub ntawv tshuaj xyuas, nrog rau kev tsom mus rau qhov zoo ntawm cov khoom siv vuam (tsis muaj kab nrib pleb, porosity, los yog tsis tiav kev nkag), los tiv thaiv -corrosion txheej adhesion, thiab thickness. Tib lub sijhawm, muab qhov tseem ceeb rau cov tuam txhab muaj npe nrov nrog cov nplai ntau lawm thiab cov kws tshaj lij los tiv thaiv- kev tsim nyog corrosion. Cov tuam txhab lag luam no muaj cov txheej txheem tsim khoom lag luam, kev tswj hwm nruj, thiab kev ua tiav tom qab- kev muag khoom, ua kom muaj kev tswj xyuas raws sij hawm ntawm cov teeb meem zoo uas yuav tshwm sim tom qab.
Nws kuj tseem ceeb heev uas yuav tau xaiv cov yeeb nkab zoo raws li cov ntawv thov tshwj xeeb kom tsis txhob muaj kev sib raug zoo. Cov xwm txheej sib txawv muaj qhov sib txawv ntawm kev siv zog thiab kev xav tau siab, xav tau kev hloov kho: rau qhov xwm txheej me me mus rau nruab nrab corrosion xws li qhov chaw sab nraum zoov thiab ntub dej, kub -dip galvanized LSAW kav yuav siv tau, ntsuas tus nqi{2}} ua tau zoo thiab tiv thaiv corrosion; rau corrosive thiab siab heev - cov xwm txheej xws li tshuaj lom neeg thiab dej hiav txwv ib puag ncig, 3PE-coated LSAW kav yuav tsum tau txhim kho corrosion kuj thiab durability; thiab rau cov xwm txheej hauv av, epoxy coal tar coated LSAW kav yog tsim rau cov av noo thiab acidic / alkaline underground ib puag ncig. Ib txhij, txheeb xyuas cov yeeb nkab tshwj xeeb kom ntseeg tau tias cov yeeb nkab txoj kab uas hla thiab phab ntsa tuab phim cov kev tsim kho, kom tsis txhob muaj qhov tsis sib xws uas tuaj yeem cuam tshuam rau kev teeb tsa thiab siv.
Thaum kawg, zam kev yuav khoom pitfalls. Tsis txhob dig muag caum tus nqi qis. Tsawg- cov kav dej nqes feem ntau muaj cov ntaub ntawv tsis zoo thiab cov txheej txheem tiv thaiv tsis zoo - corrosion, uas tuaj yeem yooj yim ua rau txheej txheej thiab cov yeeb nkab corrosion nyob rau lub sij hawm luv luv, ua rau cov nqi kho tom qab. Tsis txhob tso tseg kev soj ntsuam kom ntxaws. Xyuas cov yeeb nkab saum npoo ntawm - qhov chaw kom paub tseeb tias cov tshuaj tiv thaiv - txheej txheej yog du thiab zoo ib yam, tsis muaj tev lossis plam thaj chaw, cov welds tiaj tus thiab tsis muaj kev puas tsuaj, thiab sab hauv phab ntsa tsis muaj burrs thiab impurities. Tsis txhob saib tom qab - kev muag khoom. Xaiv cov tuam txhab lag luam uas muaj kev paub zoo tom qab- kev txhawb nqa muag, qhia meej meej lub sijhawm lav thiab cov txheej txheem kho, thiab zam cov teeb meem uas tsis tuaj yeem daws tau zoo tom qab.
