Kev tiv thaiv corrosion: piav qhia, nta, hom thiab tshuaj xyuas
Kev tiv thaiv corrosion: piav qhia, nta, hom thiab tshuaj xyuas

Video: Kev tiv thaiv corrosion: piav qhia, nta, hom thiab tshuaj xyuas

Video: Kev tiv thaiv corrosion: piav qhia, nta, hom thiab tshuaj xyuas
Video: 6 Nqi Lus Qhia Kev Ua neej ( leej twg mloog lub neej yuav zoo tuaj) 2024, Kaum ib hlis
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Kev tiv thaiv cov ntaub ntawv los ntawm xeb puas yog qhov yuav tsum tau ntsuas ua ntej kev qhia txog cov qauv thiab cov khoom ntawm tus kheej rau hauv kev ua haujlwm. Kev txhim kho corrosion feem ntau tsis tsuas yog ua rau cov hlau tsis zoo, tab sis kuj cuam tshuam cov khoom ntawm cov khoom nyob ib sab - yas lossis ntoo. Feem ntau, txawm tias nyob rau theem ntawm lub Hoobkas tsim, ib txoj kev xaiv los ntawm qhov kev tiv thaiv zoo li no yuav raug ua. Lub plhaub tiv thaiv corrosion kuj tuaj yeem tsim hauv tsev siv cov cuab yeej tshwj xeeb.

tiv thaiv corrosion
tiv thaiv corrosion

Kev tiv thaiv corrosion feem ntau

Feem ntau ntawm kev tiv thaiv kev tiv thaiv kev tiv thaiv txhais tau tias yog siv rau saum npoo ntawm cov khoom, uas tsim cov txheej txheem uas tiv taus rau kev txhim kho cov txheej txheem tsis zoo. Feem ntau, cov khoom thiab cov qauv uas nyob ze nrog cov dej noo yog raug rau cov kev ua haujlwm zoo li no.av thiab tshuaj. Feem ntau, kev tiv thaiv corrosion yog multifunctional. Ntawd yog, ntxiv rau kev tiv thaiv tib lub xeb, cov txheej kuj tseem tuaj yeem ua rau cov khoom siv thermal rwb thaiv tsev zoo, muab lub suab nrov txo.

Txhua lub cuab yeej muaj nws cov peev txheej ntawm kev ua haujlwm thiab tseem raug rhuav tshem thaum ua haujlwm. Qhov nuance no yog muab los ntawm tus kws tshaj lij hauv kev xaiv cov txheej txheem ua haujlwm. Tsis tas li ntawd, kev tiv thaiv corrosion nws tus kheej tuaj yeem yog cov tshuaj nquag. Rau cov hlau sib txawv thiab cov alloys, cov txheej txheem tiv thaiv zoo tshaj plaws los ntawm qhov pom ntawm kev sib cuam tshuam raug xaiv.

tiv thaiv corrosion
tiv thaiv corrosion

Ntawm cov khoom tiv thaiv xeb

Ua haujlwm nrog hlau raws li kev siv cov txheej txheem tiv thaiv yuav tsum tau ua tib zoo npaj. Raws li txoj cai, txoj haujlwm tseem ceeb cuam tshuam rau theem tshwj xeeb no. Tsis tas li ntawd, tsis zoo li cov txheej txheem ntawm kev ua lwm yam ntaub ntawv, kev tsim cov txheej txheem rau xeb rau cov hlau feem ntau cuam tshuam nrog kev siv cov khoom sib txuas ntxiv. Yog li, tiv thaiv corrosion nrog cov nyhuv ntawm hluav taws xob rwb thaiv tsev yog twb tsim nyob rau hauv lub complex.

Qhov tshwj xeeb ntawm kev siv ntau hom kev tiv thaiv kev tiv thaiv corrosion kuj yog txiav txim siab los ntawm cov peev txheej ntawm lub hom phiaj. Yog tias cov qauv npaj siv rau hauv av, ib yam li cov khoom siv dej los yog kev sib txuas lus roj, ces cov txheej txheem txheej txheej multilayer tau tsim los ua kom muaj kev tiv thaiv zoo dua qub. Lwm qhov yuav tsum tau ua yog siv rau cov ntaub ntawv uas tuaj yeem tiv nrog huab cua thiab dej. Nyob rau hauv cov ntaub ntawv no, ntau ximyog muab kev tiv thaiv rwb thaiv tsev tiv thaiv ya raws, chav thiab Frost. Ua li no, cov additives tsim nyog thiab plasticizers yog ntxiv rau cov compositions.

Ntau yam ntawm txoj kev

Txoj kev niaj hnub ntawm kev tiv thaiv hlau los ntawm kev xeb yog kev siv cov xim thiab cov kua roj vanish txheej uas tiv thaiv cov txheej txheem xeb. Cov no tuaj yeem yog cov khoom sib xyaw los ntawm cov khoom siv kho kom zoo nkauj uas kuj ua rau muaj txiaj ntsig zoo nkauj. Ntau cov txheej txheem kev tiv thaiv yog kev kho cua sov thiab alloying. Nrog rau cov txheej txheem zoo li no, cov qauv ntawm cov khoom siv hauv cov txheej txheem hloov pauv.

anti-corrosion tiv thaiv cov qauv
anti-corrosion tiv thaiv cov qauv

Piv txwv li, doping tso cai rau koj hloov cov hlau alloys los ntawm kev ua haujlwm mus rau lub xeev passive. Yog li, cov ntaub ntawv tiv thaiv kev tiv thaiv corrosion ib txwm tsim cov yeeb yaj kiab, uas yog kev tiv thaiv xeb tiv thaiv keeb kwm yav dhau los ntawm electrochemical raug. Txoj kev no yog qhov zoo vim tias nws ua haujlwm zoo tsis yog nrog hlau thiab yooj yim corroded hlau, tab sis kuj nrog cov ntaub ntawv stainless uas tuaj yeem deformed nyob rau hauv ib puag ncig hnyav.

Kev tshuaj xyuas ntawm cov xim thiab cov kua roj vanish tiv thaiv cov hlau

Nov yog txoj kev nrov tshaj plaws los tiv thaiv hlau los ntawm xeb. Nws muaj nuj nqis rau nws tus nqi pheej yig, ua haujlwm siab thiab yoog raws hauv kev siv. Txawm li cas los xij, nyob rau lub sijhawm ntev, cov xim thiab cov kua roj vanish tiv thaiv corrosion tsis pom nws tus kheej hauv txoj kev zoo tshaj plaws. Raws li cov neeg siv ntawm cov txheej txheem ua tiav raws li kev ceeb toom, nws yog ib qho tsim nyog yuav tsum suav nrog kev ua haujlwm tag nrho ntawm cov rwb thaiv tsev tsis pub dhau 7-8 xyoo. Tom ntej no, koj yuav tsum hloov kho qhov kev pab cuam,feem ntau rov kho qhov chaw ntawm lub hom phiaj khoom.

Muaj lwm qhov tsis zoo uas cov neeg siv tshuaj tiv thaiv corrosion thiab cov kua roj vanish ceeb toom. Piv txwv li, ib qho kev txwv ntawm kev siv. Qhov kev xaiv no tsis haum rau kev ntxiv dag zog rau cov kav dej uas yuav muab tso rau hauv dej lossis hauv av. Yog tias kev tiv thaiv corrosion yuav tsum kav ntev dua 10 xyoo yam tsis tau hloov kho, ces nws ua rau kev txiav txim siab siv lwm txoj hauv kev.

Electroplating tshuaj xyuas

Txoj kev no kuj yog ib txwm muaj. Nws yog feem ntau siv hauv kev lag luam thiab kev tsim kho kev lag luam. Raws li ntau tus kws tshaj lij, qhov no yog qhov kev xaiv zoo tshaj plaws rau kev ua cov qauv tsim rau kev ua haujlwm ntev. Nws zoo tiv thaiv cov hlau los ntawm corrosion thiab lwm yam kev puas tsuaj. Tab sis nws kuj yuav tsum nco ntsoov tias kev tiv thaiv corrosion ntawm cov qauv los ntawm txoj kev galvanic tsis pheej yig, yuav tsum muaj kev tshaj lij rau kev siv thiab yog nyob rau hauv nws tus kheej ua haujlwm hnyav.

anti-corrosion tiv thaiv cov kav dej
anti-corrosion tiv thaiv cov kav dej

Qhov tseeb, qhov no yog txoj hauv kev galvanizing, uas tseem koom nrog kev npaj ua ntej ntawm cov hlau nto. Cov neeg siv sau tseg cov teeb meem uas tshwm sim thaum ua sandblasting thiab etching. Hauv cov xwm txheej hauv tsev, nws tsis pom zoo siv txoj kev no. Txawm hais tias electroplating ua haujlwm zoo dua li cov xim thiab cov kua roj vanish.

Kev tshuaj xyuas ntawm kev tiv thaiv thermal

Qhov no yog ib txoj hauv kev tsom mus rau kev hloov cov qauv ntawm cov khoom siv txhawm rau txhawm rau txhawm rau cov molecules. Thermal tiv thaiv corrosionPiv txwv li, cov kav dej tso cai tsis tsuas yog los tiv thaiv cov hlau los ntawm xeb, tab sis kuj txo qhov kev ntxhov siab ntawm cov qauv yog tias nws nyob hauv av.

anti-corrosion tiv thaiv cov ntaub ntawv
anti-corrosion tiv thaiv cov ntaub ntawv

Raws li cov neeg siv ntawm cov txheej txheem no, nws pom tau tias muaj kev tiv thaiv siab hauv kev ua haujlwm hnyav tshaj plaws. Muaj tseeb, xws li kev ua haujlwm tuaj yeem pom tau tsuas yog nrog kev siv cov khoom siv tshwj xeeb. Kiln chav rau kev tua hluav taws thiab cov txheej txheem cryogenic yog kim, uas piav qhia qhov tsis tshua muaj npe ntawm qhov kev tiv thaiv no.

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