Yuav Ua Li Cas Tiv Thaiv Galvanic Xeb Ntawm Carbon thiab Stainless Hlau

Dec 07, 2020

Dab tsi yog Galvanic Corrosion?

Galvanic corrosionyog vim li cas txuas cov hlau thiab stainless hlau tuaj yeem ua teeb meem. Galvanic corrosion yog thaum ib qho hlau ua rau lwm cov hlau rau corrode thiab tawg.

Txog cov xeb no pib, yuav tsum muaj peb yam: ib qho anode (ib qho hlau), cathode (hlau thib ob), thiab ib qho electrolyte (dej yog ib qho ib qho).

Qee cov hlau muaj ntau dua los muab lawv cov hluav taws xob tshem tawm, thiab lwm qhov ntau dua xav rub hauv cov hluav taws xob ntxiv. Qhov ntawd txhais tau hais tias kev sib txuas ntawm cov hlau sib txawv no hauv cov xaim hluav taws xob-hnyav ib puag ncig ua rau ib qho hlau rau tes nws cov hluav taws xob xa mus rau lwm yam.

Thaum cov hlau muab tam sim ntawm cov khoom siv hluav taws xob, galvanic corrosion pib, thiab cov hlau xeb.

Ua li cas Galvanic Corrosion tshwm sim?

Thaum ob tus hlau tsis sib luag tau txuas rau ua ke, cov xaim hluav taws xob pab txav ib qho hlau ua hluav taws xob rau lwm yam hlau. Raws li cov khoom siv hluav taws xob-dav hlau poob hluav taws xob,nws undergoes oxidation.

Cov hlau oxidation ua rau cov hlau xeb, ua kom tsis muaj zog, thiab tawg. Qhov tshwm sim yog xeb hlau tsis huv thiab cov yeeb nkab tsis muaj zog, cov nqaj, lossis qauv.

Kawm paub yuav ua li cas kub-dip galvanization tiv thaiv koj cov kav hlau los ntawm kev xeb thiab txuas ntxiv lub neej ntawm koj lub raj xa dej thaum koj rub tawm" Tus Txheej Txheem Qhia Ntawv rau Kub-Dip Galvanization" →

Carbon Steel vs. Stainless Hlau: Dab tsi yog qhov txawv?

Tsis yog txhua tus hlau yog qhov qub. Qhov tseeb, qee cov hlau tsis sib raug zoo. Qhov no tuaj yeem yog cov pa roj carbon steel thiab cov hlau tsis xeb.

Dab tsi yog qhov sib txawv ntawm ob hom hlau no?

Cov ntxaij hlau

Cov pa roj carbon steel thiab stainless hlau yog ob qho tib si hlau, tab sis cov hlau muaj qhov tshwj xeeb ntawm cov pa roj carbon. Qhov no ua rau carbon hlau tsis tshua muaj zog, hnyav, thiab tawv.

Txawm li cas los xij, carbon hlau tsis yooj yim rau kev xeb. Qhov ntawd yog vim nws tau ua los ntawm cov hlau, thiab nws yooj yim rau cov pa ua kom tsis muaj hlau. Qhov tshwm sim yog cov hlau oxide, lossis xeb, uas tuaj yeem noj tag nrho cov pa roj carbon hlau.

Stainless Hlau

Koj yuav tau xav tias, "Tos, yog tias ob lub hlau tsis xeb hlau, vim li cas cov hlau tsis muaj tshuaj tiv thaiv corrosion?"

Cov hlau stainless muaj qhov zais cia zais: chromium.

Chromium tuaj yeem txo tawm cov pa oxygen uas tsis muaj corroding. Cov tas li kuj thawb stainless hlau ntau dua nyob rau ntawm daim ntawv qib nobility.

Yog li thaum steel hlau thiab carbon hlau txuas nrog, thiab ib qho hluav taws xob xws li ya raws tau nkag, stainless hlau nqus cov pa roj carbon steel cov hluav taws xob. Cov pa roj carbon steel tuaj yeem tuaj yeem qhuav sai, ua rau tsis muaj zog, thiab tuaj yeem tsoo.

Yuav Ua Li Cas Tiv Thaiv Kev Txhuam Hniav Ntawm Cov Hlau thiab Stainless Hlau

Txawm hais tias tsis sib haum, ob qho carbon hlau thiab stainless hlau muaj zog thiab pab tau. Luckily, muaj qee txoj kev los pab lawv ua haujlwm hauv tandem tsis ua rau muaj kev xeb:

Siv Buffer

Yog tias ob hom hlau tsis tuaj yeem ua si zoo, peb kuj yuav cais lawv. Yuav ua li cas? Rau cov kav dej, koj tuaj yeem teeb khoom xws liyeeb nkab khaulossishnav ntaub qhwv toCov. Koj tuaj yeem ntxiv cov kab xais rau tes los yog txhua yam ntawm cov rwb thaiv tsev, zoo li ProTek pas nrig lossis daim hlau tiaj.

Cov kev txhawb nqa no ua kom cov kav dej khov thiab kom cov hlau tsis txhob txhawm rau ib leeg.

Lawv kuj pab tswj cov txheej txheem tsim kho, uas txo qis kev sib txhuam, ua rau cov kab nrib pleb tsawg dua, thiab ua rau lub cev hluav taws xob tsis zoo rau cov hlau.

Lwm yam tsis, xws li nylon txuas los yog khawm txuas ntxiv, tuaj yeem ntxiv ib qho kev tiv thaiv ntawm cov hlau tsis sib luag hauv thooj av lossis txhawb nqa cov teeb, ib yam nkaus.

Phaj Cov Hlau Steel

Galvanizing yog txoj hauv kev los tiv thaiv carbon hlau yam tsis muaj kev hloov pauv nws cov qauv. Thaum carbon hlau galvanized, txheej txheej ntawm zinc yog kis dua nws qhov chaw.

Zinc muaj ntau dua qis dua ntawmgalvanic nplaidua li cov pa roj carbon steel, uas txhais tau tias nws yooj yim dua thiab feem ntau yuav tso nws cov hluav taws xob ntau dua li carbon hlau.

Tom qab galvanizing, zinc txi nws cov hluav taws xob txhua lub sijhawm ib qho xeb hlau txuas nrog qhov chaw. Yog li, cov qauv hlau carbon muaj peev xwm khaws nws daim ntawv ruaj khov.

Txo Raug Raug Rau Electrolytes

Nco ntsoov, rau galvanic corrosion pib, yuav tsum muaj ob daim hlau thiab ib qho electrolyte. Yog li khaws cov electrolytes ntawm bay tuaj yeem qeeb xeb.

Qee qhov kev xaiv zoo yog ntxiv aeration lossis du rau ntawm qhov chaw thaum twg ua tau. Kev tiv thaiv tsis tau dej los ntawm kev ntxiv cov txheej txheej tiv thaiv dej tuaj yeem mus rau kev khaws cia ntev ntev ntawm cov hlau, thiab koj tuaj yeem siv cov ntsaws ruaj ruaj kom nres dej lossis phom los ntawm zawv zawg ntawm cov ntoo.

Nws tseem yog lub tswv yim zoo ntxiv kom ntxiv kua dej kom tsis txhob muaj dej nkag. Kev sib sau ua ke dej ntu ntawm cov hlau thiab ncaws tawm-pib ua kom cov txheej txheem corrosion. Ib txoj hauv kev zoo ntxiv kev tso kua paug yog los ntawm kev quaj. Nov yog qhov uas koj tho qhov rau hauv qab ntawm hollow txhawb kom muab dej ntws tawm ntawm txoj kev khiav tawm.