Stainless hlau yog ib qho khoom siv tsis txaus ntseeg uas ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam, ua tsaug rau nws cov yam ntxwv tshwj xeeb thiab kev ua haujlwm tsis sib xws. Tab sis koj puas paub tias muaj qhov zais cia kom tswj hwm nws qhov kev ua tau zoo thiab ua haujlwm ntev? Qhov no zais cia nyob rau hauv ib tug txheej txheem hu ua passivation.

Taw qhia rau Stainless Hlau

Nkag siab txog lub zog ntawm passivation pib nrog kev txaus siab rau lub hauv paus ntawm stainless hlau nws tus kheej. Stainless hlau tsis yog cov khoom siv yooj yim xwb;

Nws yog ib qho alloy ua los ntawm cov hlau, carbon, thiab cov koob tshuaj zoo ntawm chromium.

Dab tsi Ua Stainless Hlau Cim

Cov neeg tseem ceeb hauv zaj dab neeg stainless hlau yog chromium. Thaum raug oxygen, chromium tsim ib txheej nyias, pom tsis pom ntawm chromium

oxide nyob rau saum npoo ntawm cov hlau. Cov txheej no yog passive, txhais tau tias nws tsis hnov ​​​​mob nrog lwm yam.

1. Nkag siab txog kev tiv thaiv corrosion

Chromium oxide yog tus saib xyuas tus tim tswv ntawm stainless hlau. Nws tiv thaiv xeb thiab corrosion, uas yog cov pitfalls ntawm feem ntau lwm yam hlau.

Qhov kev tiv thaiv corrosion no muab stainless hlau nws lub npe thiab nws siv dav.

2. Lub luag haujlwm ntawm Passivation hauv Stainless Hlau

Tam sim no, cia peb dhia mus rau hauv lub ntsiab lus tseem ceeb - passivation. Passivation yog cov txheej txheem tshuaj uas txhim kho cov txheej txheem chromium oxide uas tshwm sim.

Qhov no ua rau cov hlau tseem tiv taus xeb thiab corrosion.

3. Kev Tshawb Fawb Tom Qab Passivation

Thaum lub sij hawm passivation, stainless hlau yog kho nrog ib tug me ntsis acid tov. Qhov no tshem tawm cov hlau dawb thiab lwm yam kab mob ntawm qhov chaw,

uas tuaj yeem cuam tshuam qhov tsim ntawm chromium oxide txheej.

Koj puas xav paub vim li cas stainless hlau yuav tsum tau passivate?

Thaum xub thawj, peb yuav tsum paub tias lub ntsiab lus ntawm passivation-stainless hlau yog dab tsi? Lub passivation ntawm stainless hlau yog hais txog ua rau saum npoo ntawm stainless hlau react nrog ib tug passivation tus neeg sawv cev los tsim ib tug ruaj khov passivation zaj duab xis uas tiv thaiv stainless hlau substrate los ntawm xeb. tshwm sim los ntawm oxidation thiab corrosion. Cov xeb kuj ua tau zoo ntawm stainless hlau yog qhov zoo. Txawm li cas los xij, hauv thaj chaw ntug dej hiav txwv lossis hauv kev sib cuag nrog qee cov tshuaj acid thiab alkali, cov tshuaj chloride tsim tau yooj yim nkag mus rau cov yeeb yaj kiab tsis zoo ntawm stainless hlau. Stainless hlau yuav maj mam corrode thiab xeb thaum lub sij hawm. Yog li ntawd, stainless hlau yuav tsum tau passivated. Passivated stainless hlau tuaj yeem txhim kho thawj lub hauv paus los tiv thaiv xeb los ntawm 3-8 xyoo, txo txoj kev pheej hmoo ntawm cov hlau tsis xeb.

HENGKO stainless hlau sintered lim caij muaj cov huab cua qhov pore loj, cov lim qhov loj thiab cov khoom sib xws; zoo huab cua permeability, ceev ceev, zoo cuam tshuam cov nyhuv, siab pom efficiency; zoo corrosion kuj, high-temperature kuj, tshav kub tsis kam, stainless hlau khoom yuav ua tau 600 ua hauj lwm kub; Qhov ntev ntawm cov lim dej zoo tuaj yeem ncav cuag 800mm, qhov siab tshaj plaws ntawm cov qauv lim phaj tuaj yeem ncav cuag 800mm ntev * 450mm dav, thiab qhov siab tshaj plaws txoj kab uas hla ntawm cov qauv lim lim tuaj yeem ncav cuag 450mm. Peb kuj muab cov passivation ntawm cov khoom seem, Yog hais tias koj yuav tsum tau siv rau cov stricter corrosion kuj thiab xeb kuj ib puag ncig.

Cov txiaj ntsig ntawm Passivation

Muaj ntau cov txiaj ntsig zoo rau cov hlau tsis muaj zog, tag nrho cov uas ua rau nws txhim kho kev ua tau zoo thiab kev ua haujlwm ntev.

Yuav ua li cas ua passivation-stainless hlau?Cia peb qhia koj.

Vim tias ntau hom stainless hlau siv sib txawv ntawm cov tshuaj passivation, qee cov ntsiab lus yuav txawv thaum lub sij hawm passivation txheej txheem ntawm stainless hlau. Passivation xav tau kev cai. Txawm li cas los xij, cov txheej txheem yooj yim feem ntau muaj tib cov kauj ruam: xyuas kom meej tias qhov chaw ntawm qhov chaw huv si. Tsuas yog thaum lub substrate raug nthuav tawm nws yuav zoo dua passivated. Muab ib los yog ob peb ntu kom passivated rau hauv ib lub thawv. Ncuav cov tshuaj ua kua rau hauv lub thawv thiab cia cov khoom ntub dej rau ib lub sijhawm. Ntxuav nrog dej ntws. Xyuas kom meej qhov saum npoo ntawm qhov ntxuav thiab tsis muaj cov kua passivation residual rau.

Nitric acid passivationyog ib qho ntawm cov txheej txheem passivation tam sim no. Ua ntej xaiv lub tshuab passivation, peb yuav tsum paub txog cov tshuaj siv tshuaj uas yuav tsum tau ua rau cov tshuaj tiv thaiv passivation ntawm stainless hlau kom tsis txhob siv cov tshuaj tsis raug ua rau muaj kev puas tsuaj rau qhov chaw. Thiab tib lub sijhawm xaiv cov cuab yeej passivation cuam tshuam raws li cov yam ntxwv ntawm cov hlau tsis sib txawv. Piv txwv li, cov ntsiab lus chromium ntawm austenitic stainless hlau (xws li 304 stainless hlau) feem ntau siab dua li ntawm martensitic stainless hlau (xws li 430 stainless hlau), ua rau austenitic alloys tiv taus corrosion thiab pitting.

Ua ntej passivation ntawm stainless hlau qhov chaw, cov ntsiab lus hauv qab no yuav tsum tau xav txog:

Weldments tej zaum yuav tsis haum rau passivation. Cov zaj duab xis passive nyob rau saum npoo ntawm stainless hlau ua rau nws corrosion resistant. Arc vuam yuav raug cov khoom siv rau lub sijhawm luv luv ntawm kev kub siab thermal cycling, yog li rhuav tshem nws cov corrosion kuj.

Kev cai da dej yog yuav tsum tau. Qhov kub thiab hom kua qaub siv nyob rau hauv cov txheej txheem passivation yuav tsum tau hloov kho raws li cov alloy tau passivated. Qhov no ntxiv cov nqi thiab qhov nyuaj piv rau electropolishing. Qee cov alloys tsis tuaj yeem passivated. Piv txwv li, qee cov hlau tsis muaj hlau tsis muaj chromium thiab cov ntsiab lus nickel yuav raug rhuav tshem. Yog li ntawd, lawv tsis tuaj yeem passivated.

Lub ntsiab kom zoo dua ntawm stainless hlau passivation yog hais tias nws muaj peev xwm txhim kho cov xeb kuj ntawm stainless hlau qhov chaw, thiab tus nqi qis dua li ntawm electropolishing. Qhov loj tshaj qhov tsis zoo ntawm cov txheej txheem electropolishing yog tias nws kim dua li txheej txheem passivation txheej txheem. Tsis tas li ntawd, electropolishing tsis muaj qhov cuam tshuam tseem ceeb ntawm kev tiv thaiv oxide txheej ntawm hlau zoo li passivation.

Txawm li cas los xij, thaum tham txog qhov xwm txheej ntawm qhov chaw rau hauv qhov kev txiav txim siab tseem ceeb, electropolishing tseem yog qhov kev kho mob nyiam. Passivation tsis zoo li electropolishing ua rau saum npoo ntawm qhov chaw du, nws kuj tsis zoo heev hloov qhov tsos ntawm ib feem. Yog li ntawd, passivation tsis yog ib txoj hauv kev zoo tshaj plaws yog tias cov khoom xav tau ib qho chaw du thiab tsis-stick. Cov khoom noj khoom haus thiab kev lag luam tshuaj feem ntau siv electro-polished stainless hlau qhov chaw vim tias qhov chaw du thiab yooj yim los ntxuav thiab tua kab mob.

FAQs

1. Passivation yog dab tsi?

Passivation yog cov txheej txheem tshuaj uas txhim kho cov txheej txheem chromium oxide uas tshwm sim

ntawm stainless hlau, yog li ua rau nws tsis kam mus xeb thiab corrosion.

2. Passivation ua haujlwm li cas?

Thaum lub sij hawm passivation, stainless hlau yog kho nrog ib tug me ntsis acid tov kom tshem tawm

Cov kab mob saum npoo av. Tom qab ntawd nws tau yaug thiab qhuav, thiab chromium reacts nrog huab cua los tsim ib txheej tshiab, ntxiv dag zog rau chromium oxide txheej.

3. Vim li cas passivation tseem ceeb rau stainless hlau?

Passivation yog ib qho tseem ceeb rau cov hlau tsis muaj steel vim nws ua rau cov khoom siv corrosion kuj, ua rau nws lub neej ntev,

thiab tuav nws txoj kev zoo nkauj.

4. Ntev npaum li cas stainless hlau yuav tsum passivated?

Qhov zaus ntawm passivation nyob ntawm qhov kev ua haujlwm ntawm cov khoom siv stainless hlau. Nyob rau hauv ntau corrosive

ib puag ncig lossis qhov chaw uas cov khoom nquag ua haujlwm, yuav tsum muaj kev ua haujlwm ntau dua li niaj zaus.

5. Puas yog passivation cuam tshuam cov tsos ntawm stainless hlau?

Yog, passivation pab tswj lub ci, huv si tsos ntawm stainless hlau los ntawm kev tiv thaiv xeb thiab corrosion.

6. Puas yog tag nrho cov khoom siv hlau tsis muaj hlau tuaj yeem raug passivated?

Yog, tag nrho cov khoom stainless hlau tuaj yeem passivated. Txawm li cas los xij, qhov kev xav tau ntawm passivation yuav nyob ntawm qhov

kev ua haujlwm ntawm cov khoom.

7. Puas yog passivation yog tus txheej txheem kim?

Thaum muaj cov nqi koom nrog hauv passivation, nws feem ntau suav hais tias yog tus nqi tsim nyog tau txais kev tiv thaiv

nws muab rau cov hlau tsis muaj steel thiab cov txiaj ntsig txuas ntxiv ntawm nws txoj sia.

8. Yuav ua li cas yog stainless hlau tsis passivated?

Yog hais tias stainless hlau tsis passivated, nws yuav ua rau corrosion, uas yuav ua rau ib tug luv luv

lifespan thiab diminished aesthetic txaus siab.

9. Puas yog passivation ua rau cov hlau tsis muaj zog?

Passivation tsis tas yuav ua rau cov hlau tsis muaj zog. Nws txhim kho nws cov kav ntev los ntawm kev txhim kho nws cov kev tiv thaiv corrosion.

10. Kuv puas tuaj yeem ua passivation hauv tsev?

Passivation yuav tsum tau ua los ntawm cov kws tshaj lij kev cob qhia kom ntseeg tau tias cov txheej txheem ua tiav raug thiab nyab xeeb.

Xav paub ntau ntxiv? Peb nyob ntawm no los pab!

Nkag siab txog qhov tsis sib xws ntawm sintered stainless hlau thiab cov txheej txheem passivation tuaj yeem yooj yim.

Yog tias koj txaus siab los txhim kho qhov kev ua tau zoo thiab lub neej ntawm koj cov khoom siv stainless hlau lossis nrhiav qhov zoo tagnrho

OEM tshwj xeeb sintered hlau lim rau koj qhov system pom, peb pab neeg nyob ntawm no los coj koj.

Hu rau peb ntawm HENGKO, thiab cia peb qhib lub peev xwm ntawm koj lub tshuab ua ke. Hu rau peb ntawm email

at ka@hengko.com, thiab peb pab neeg txawj ntse yuav zoo siab los pab koj nrog koj cov lus nug.

Koj txoj kev mus rau qhov kev pom zoo tshaj plaws tsuas yog email tam sim ntawd. Tsis txhob tos. Tiv tauj peb hnub no!