Stainless hlau yog renowned rau nws corrosion kuj, durability, thiab huv si nto tiav. Txawm li cas los xij, thaum lub sij hawm tsim cov txheej txheem xws li vuam, txiav, thiab sib sau, nws qhov chaw tuaj yeem raug cuam tshuam los ntawm nplai, oxides, lossis hlau paug. Txhawm rau rov kho thiab txhim kho corrosion kuj, ob qhov tseem ceeb tom qab kev kho mob yog siv:picklingthiabpassivation.
Hauv kab lus no, peb yuav tshawb xyuas cov txheej txheem no koom nrog, vim li cas lawv tseem ceeb, thiab lawv txawv li cas. Txawm hais tias koj nyob hauv kev tsim kho, kev ua zaub mov, lossis kev tsim khoom petrochemical, kev nkag siab txog kev khaws cia thiab kev ua haujlwm yog qhov tseem ceeb rau kev ua haujlwm ntev ntawm stainless hlau.
Pickling yog dab tsi?
Pickling yog txheej txheem tshuaj uas tshem tawmCov kab mob saum npoo avxws li weld nplai, xeb, cua sov tint, thiab oxides los ntawm qhov chaw ntawm stainless hlau. Cov txheej txheem no feem ntau yog siv cov tshuaj nitric acid thiab hydrofluoric acid los ua cov tshuaj tua kab mob uas cov tshuab ntxuav tsis tuaj yeem tshem tawm.
Yuav Ua Li Cas Pickling Ua Haujlwm:
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Cov hlau tsis muaj hlau yog kho nrog cov kua qaub (feem ntau yog immersion, txhuam, los yog txau)
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Cov tshuaj reacts nrog oxides thiab nplai ntawm cov hlau nto
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Cov kab mob no tau yaj thiab yaug tawm, nthuav tawm qhov huv, liab qab stainless hlau nto
Pickling yog qhov tseem ceeb thaum cov hlau tsis muaj hlau tau raug kho los yog welded, vim tias cov cua sov ua rau cov txheej txheem oxide tsaus uas tuaj yeem cuam tshuam kev xeb yog tias tsis kho.
Passivation yog dab tsi?
Passivation yog ib qho txheej txheem tshuaj lom neeg uas txhim kho qhov zoonatural oxide txheejnyob rau saum npoo ntawm stainless hlau. Thaum pickling tshem tawm cov kab mob, passivation tsim cov chromium-nplua nuj passive zaj duab xis uas tiv thaiv cov khoom los ntawm corrosion.
Yuav Ua Li Cas Passivation Ua Haujlwm:
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Cov hlau tsis huv huv yog kho nrog anitric acid los yog citric aciddaws
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Cov kua qaub tshem tawm cov hlau dawb thiab lwm yam khoom txawv teb chaws los ntawm qhov chaw
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Ib tug nyias, uniformchromium oxide txheejtsim spontaneously nyob rau hauv lub xub ntiag ntawm huab cua los yog oxygen
Passivation tsis tshem cov nplai lossis oxide txheej. Yog li ntawd, nws yog feem ntau uatom qab picklinglos muab siab tshaj corrosion kuj.
Qhov txawv tseem ceeb ntawm Pickling thiab Passivation
Txawm hais tias ob txoj kev koom nrog kev kho cov kua qaub, lawv ua haujlwm sib txawv:
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Picklingtshem tawm oxides thiab nplai
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Passivationtshem tawm cov hlau dawb thiab txhawb kev tiv thaiv oxide txheej
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Pickling yog nruj dua thiab koom nrog hydrofluoric acid
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Passivation yog softer thiab feem ntau siv nitric los yog citric acid
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Pickling hloov qhov tsos; passivation tsis cuam tshuam qhov ua tiav
Rau cov khoom siv stainless hlau ua tau zoo, ob qho tib si cov txheej txheem feem ntau yog siv ua ntu zus los xyuas kom meej qhov huv thiab corrosion-resistant nto.
Thaum twg cov txheej txheem no tsim nyog?
Pickling thiab passivation raug pom zoo nyob rau hauv cov ntaub ntawv hauv qab no:
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Tom qabvuamtshem tawm cov cua sov tint thiab oxide discoloration
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Ua rawsmachining los yog sib tsoo, uas tej zaum yuav qhia cov kab mob hlau
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Tom qabKev kho cua sov, qhov twg scale thiab discoloration tuaj yeem tsim
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Raukev siv huv thiab huv, qhov chaw purity yog qhov tseem ceeb
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In marine lossis chemical ib puag ncig, qhov twg corrosion kuj yuav tsum optimized
Los ntawm kev sivsakysteel covhigh-quality stainless hlau thiab siv cov txheej txheem tom qab kho kom zoo, koj cov khoom siv yuav kav ntev dua thiab ua tau zoo dua hauv cov xwm txheej hnyav.
Cov txiaj ntsig ntawm Pickling thiab Passivation
Ua cov kev kho mob no ua kom muaj ntau yam zoo:
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Restores tag nrho corrosion kuj
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Txhim kho qhov huv si
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Tshem tawm cov kab mob embedded
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Enhances lifespan ntawm stainless hlau
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Npaj cov khoom rau tha xim los yog txheej
Rau kev lag luam xws li kws tshuaj, kev ua zaub mov, thiab roj & roj, pickling thiab passivation tsis yog xaiv tau - lawv yuav tsum tau ua kom muaj kev ncaj ncees thiab ua raws li cov qauv thoob ntiaj teb.
Kev lag luam Standards rau Pickling thiab Passivation
Ntau cov qauv thoob ntiaj teb qhia txog cov txheej txheem thiab cov txheej txheem:
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ASTM A380 Cov Lus Qhia Tshwj Xeeb: Txuj kev xyaum tu, descaling, thiab passivation
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ASTM A967 Cov Khoom Siv Hluav Taws Xob: Specification rau chemical passivation kev kho mob
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TS EN 2516: European qauv rau aerospace stainless hlau passivation
Nco ntsoov xyuas koj cov khoom siv stainless hlau ua tau raws li cov qauv no, tshwj xeeb tshaj yog thaum lawv siv rau hauv qhov chaw muaj kev phom sij lossis muaj kev pheej hmoo siab. Ntawmsakysteel ua, peb muab cov ntaub ntawv thiab kev txhawb nqa uas ua raws li cov cai nruj thoob ntiaj teb no.
Cov Txheej Txheem Feem Kev Thov
Raws li qhov loj me, cov duab, thiab ib puag ncig, cov txheej txheem no tuaj yeem siv rau ntau txoj hauv kev:
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Immersion (Tank): Haum rau me me mus rau nruab nrab qhov chaw
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Txau Pickling: Siv rau cov khoom siv loj lossis kev teeb tsa
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Txhuam Daim Ntawv Thov: Zoo tagnrho rau kev kho mob hauv zos xws li weld seams
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Kev ncig: Siv hauv cov kav dej rau kev kho mob sab hauv
Kev yaug kom zoo thiab nruab nrab tom qab kev kho mob yog qhov tseem ceeb los tiv thaiv cov kua qaub seem.
Environmental thiab Safety Considerations
Ob qho tib si pickling thiab passivation koom nrog cov tshuaj uas yuav tsum tau ua tib zoo tuav:
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Ib txwm hnav cov khoom tiv thaiv tus kheej (PPE)
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Neutralize pov tseg daws ua ntej pov tseg
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Ua kev kho mob nyob rau hauv ib qho chaw zoo-ventilated los yog nyob rau hauv fume extraction
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Ua raws li cov cai hauv cheeb tsam ib puag ncig txog kev siv kua qaub thiab pov tseg
Xaus
Pickling thiab passivation yog cov kauj ruam tseem ceeb hauv kev ua kom cov hlau tsis muaj steel tuav nws cov kev tiv thaiv corrosion thiab kev ua haujlwm ntev. Thaum pickling ntxuav thiab tshem tawm nplai, passivation ntxiv dag zog rau cov txheej txheem oxide tiv thaiv-ua ke, lawv npaj cov hlau tsis muaj steel rau cov ntawv thov uas xav tau tshaj plaws.
Xaiv qhov zoo stainless hlau yog ib qho tseem ceeb raws li kev kho kom zoo. Tias yog vim li cas kev lag luam thoob ntiaj teb ntseegsakysteel uaxa cov ntawv pov thawj, corrosion-resistant stainless hlau cov ntaub ntawv nrog rau kev txhawb nqa rau kev ua thiab fabrication. Rau cov kev daws teeb meem txhim khu kev qha hauv stainless hlau kev ua tau zoo, tig mus rausakysteel ua-koj tus khub hlau uas ntseeg siab.
Post lub sij hawm: Jun-27-2025