Stainless hlau yog dav lees paub rau nws cov kav ntev, lub zog, thiab, qhov tseem ceeb tshaj, nwscorrosion kuj. Cov cuab yeej no ua rau nws cov khoom xaiv rau suav tsis txheeb kev lag luam, los ntawm kev tsim kho thiab kev ua zaub mov mus rau marine thiab chemical manufacturing. Tab sis dab tsi raws nraim muab stainless hlau nws tiv thaiv xeb thiab degradation? Thiab koj yuav ua li cas kom ntseeg tau tias koj cov hlau tsis muaj steel ua tau raws li qhov xav tau hauv ntau qhov chaw?
Hauv tsab xov xwm no, peb piav qhia txog kev tshawb fawb tom qab stainless hlau qhov kev tiv thaiv corrosion, ntau hom muaj, thiab yuav ua li cas xaiv qib zoo rau koj daim ntawv thov tshwj xeeb.
Dab tsi ua rau Stainless Hlau Corrosion Resistant?
Tus yuam sij rau stainless hlau qhov corrosion kuj nyob hauv nwscov ntsiab lus chromium. Tag nrho cov hlau tsis muaj hlau muaj tsawg kawg yog 10.5% chromium, uas cuam tshuam nrog oxygen hauv huab cua los ua ib qhopassive txheejntawm chromium oxide rau ntawm qhov chaw. Qhov no tsis pom, kho tus kheej txheej tiv thaiv cov hlau hauv qab los ntawm oxidation thiab corrosion.
Qhov siab dua cov ntsiab lus chromium, qhov zoo dua qhov corrosion kuj. Ntau qib stainless hlau kuj muaj xws li lwm yam alloying ntsiab xws linpib tsib xee, molybdenum, thiabnitrogenlos txhim kho qhov kev tiv thaiv kev tiv thaiv, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig nruj.
Hom Corrosion thiab Stainless Hlau Cwj Pwm
Txawm tias cov hlau tsis muaj steel tsis muaj kev tiv thaiv tag nrho rau txhua hom kev xeb. Kev nkag siab txog cov hom sib txawv pab xaiv cov qib zoo.
1. General Corrosion
Qhov no yog ib qho kev txhim kho corrosion uas tshwm sim thoob plaws ib qho chaw thaum raug acidic lossis caustic ib puag ncig. Qib zoo li 304 thiab 316 tiv taus hom no zoo.
2. Pitting Corrosion
Nws tshwm sim nyob rau hauv ib puag ncig uas muaj chloride nplua nuj xws li dej hiav txwv lossis thaj chaw pas dej. Molybdenum-muaj qib xws li316 or 904l uamuab superior kuj.
3. Crevice Corrosion
tshwm sim hauv qhov chaw nruj uas cov pa oxygen tsis tuaj yeem ncav cuag qhov chaw kom tswj tau cov txheej txheem passive. Xaiv cov qib qis-carbon lossis qib siab-alloy tuaj yeem pab tiv thaiv qhov no.
4. Kev nyuaj siab Corrosion Cracking
Qhov no yog kev sib xyaw ua ke ntawm cov neeg kho tshuab kev nyuaj siab thiab ib puag ncig corrosive. Duplex stainless hlau lossis high-nickel alloys feem ntau siv los tiv thaiv qhov tshwm sim no.
Sib piv Nrov Stainless Hlau Qib
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304 Stainless hlau: Zoo heev corrosion kuj, haum rau sab hauv tsev los yog me ntsis corrosive ib puag ncig.
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316 Stainless hlau: Muaj molybdenum, ua rau nws zoo tagnrho rau marine, tshuaj, thiab zaub mov ua daim ntaub ntawv.
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430 Stainless hlau: Tsawg nqi tab sis muaj kev tiv thaiv corrosion tsawg, feem ntau yog siv rau hauv tsev siv.
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904L Stainless hlau: High-alloy austenitic stainless hlau nrog tshwj xeeb tsis kam rau cov kua qaub thiab chlorides.
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TIAB SA 2205: Muaj lub zog zoo dua thiab ua haujlwm rau kev ntxhov siab corrosion cracking.
At sakysteel ua, peb muab ntau yam stainless hlau qib nrog guaranteed tshuaj muaj pes tsawg leeg thiab kuaj corrosion kuj, pab cov neeg muas zaub thoob ntiaj teb nrhiav qhov zoo tshaj plaws match rau lawv tej yaam num.
Cov yam ntxwv uas cuam tshuam rau Stainless Hlau Corrosion Resistance
Ob peb lwm yam cuam tshuam li cas stainless hlau yuav ua haujlwm hauv kev pabcuam:
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Kub: Kev kub siab dua tuaj yeem ua kom corrosion, tshwj xeeb tshaj yog nyob rau hauv acidic lossis chloride-nplua nuj ib puag ncig.
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Tshaj tawm chlorides: Cov tshuaj chloride ions muaj kev txhoj puab heev thiab tuaj yeem rhuav tshem cov txheej txheem passive.
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Acidity thiab Alkalinity: Cov qib pH siab heev tuaj yeem cuam tshuam txawm tias qib high-qib stainless hlau.
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Nto tiav: Ib tug smoother tiav (xws li No. 4 los yog 2B) nyhav los tiv thaiv corrosion zoo dua rougher los yog khawb qhov chaw.
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Kev tu: Kev ntxuav tu tsis tu ncua tiv thaiv cov kab mob los ntawm kev rhuav tshem cov yeeb yaj kiab tiv thaiv.
Kev xaiv kom raug, kev teeb tsa, thiab kev saib xyuas tuaj yeem txuas ntxiv lub neej ntawm cov hlau tsis huv hauv cov chaw corrosive.
Daim ntawv thov uas tso siab rau Stainless Hlau Corrosion Resistance
Stainless hlau yog qhov tseem ceeb hauv kev lag luam uas corrosion yuav ua rau muaj kev nyab xeeb, kev poob qis, lossis kev sib kis. Cov piv txwv uas muaj xws li:
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Marine engineering: Rau nkoj fittings, shafts, thiab offshore platforms
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Kev ua tshuaj lom neeg: Rau reactors, tanks, thiab pipelines
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Khoom noj khoom haus thiab dej haus: Hauv cov kav dej huv thiab cov khoom siv hauv chav ua noj
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Kev tsim kho: Tshwj xeeb tshaj yog rau sab nrauv facades thiab ntug dej hiav txwv cov tsev
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Pharmaceutical thiab kev kho mob: Qhov chaw tu cev thiab tiv thaiv cov tshuaj lom neeg yog qhov tseem ceeb
sakysteel uamuab ntawv pov thawj stainless hlau cov ntaub ntawv uas ua tau raws li thoob ntiaj teb cov qauv, ua rau peb ib tug txhim khu kev qha khub rau kev thov corrosion-rhiab daim ntaub ntawv.
Yuav Ua Li Cas Txhim Kho Stainless Hlau Corrosion Resistance
Txawm tias cov qib corrosion-resistant tshaj plaws tuaj yeem tau txais txiaj ntsig los ntawm kev ceev faj ntxiv:
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Siv qib kom raugrau koj ib puag ncig tshwj xeeb
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Xyuas kom zoo weldingkom tsis txhob rhiab heev thiab intergranular corrosion
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Siv cov kev kho mob passivationtxhawm rau txhim kho cov txheej txheem tiv thaiv tom qab machining lossis fabrication
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Tsis txhob sib cuag nrog carbon steelthaum tuav lossis khaws cia kom tsis txhob muaj kab mob
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Ntxuav tsis tu ncuanrog cov tshuaj tsis muaj chloride los khaws cov txheej txheem passive
Ua haujlwm nrog kev paub txog cov khoom siv xws lisakysteel uaxyuas kom koj cov ntaub ntawv tsis yog zoo xwb tab sis kuj ua tiav thiab tiv thaiv zoo.
Xaus
Nkag siab txog kev tiv thaiv corrosion ntawm stainless hlau yog qhov tseem ceeb rau kev xaiv cov khoom tsim nyog rau koj qhov project. Los ntawm cov txheej txheem passive tsim los ntawm chromium mus rau lub zog ntxiv ntawm molybdenum thiab npib tsib xee, stainless hlau yog engineered los ua nyob rau hauv qhov nyuaj tshaj plaws.
Txawm hais tias koj tab tom tsim cov khoom noj khoom haus-qib ua cov kab los yog kev teeb tsa ntawm ntug dej hiav txwv drilling platform, xaiv cov qib stainless hlau raug ua kom ntseeg tau mus ntev, kev nyab xeeb, thiab ua haujlwm tau zoo.
Rau cov khoom zoo tshaj plaws stainless hlau txhawb nqa los ntawm kev txawj ntse thiab kev pabcuam thoob ntiaj teb, kev ntseeg siabsakysteel ua-koj tus kws kho mob corrosion-resistant.
Post lub sij hawm: Jun-27-2025