Yuav Ua Li Cas Passivate Stainless

Stainless hlau yog dav paub rau nws zoo heev corrosion kuj, lub zog, thiab ntev. Tab sis txawm tias qib siab tshaj plaws stainless hlau tuaj yeem tau txais txiaj ntsig los ntawm kev kho deg hu uapassivation. Yog koj xav paubyuav ua li cas passivate stainless, tsab xov xwm no yuav qhia koj txog txhua yam koj yuav tsum paub - los ntawm dab tsi passivation yog, mus rau vim li cas nws tseem ceeb, thiab cov lus qhia step-by-step ntawm yuav ua li cas kom raug.

Phau ntawv qhia no yog coj los rau kojsakysteel ua, ib tug ntseeg thoob ntiaj teb tsum ntawm stainless hlau khoom, muab kev pab txhawb nqa thiab hwm cov ntaub ntawv rau industries thoob ntiaj teb.

Passivation yog dab tsi?

Passivationyog cov txheej txheem tshuaj uas tshem tawm cov hlau dawb thiab lwm yam kab mob los ntawm qhov chaw ntawm cov hlau tsis huv thiab txhawb kev tsim cov txheej txheej nyias, tiv thaiv oxide. Cov txheej txheem oxide no-feem ntau chromium oxide-ua raws li kev tiv thaiv corrosion thiab xeb.

Thaum stainless hlau ib txwm tsim cov txheej txheem no thaum raug huab cua, cov txheej txheem passivation txhim kho thiab ruaj khov, tshwj xeeb tshaj yog tom qab kev tsim khoom xws li machining, vuam, sib tsoo, lossis kho cua sov.

Vim li cas Passivation tseem ceeb

Passivation tsis yog ib qho kev xaiv - nws yog ib qho tseem ceeb hauv ntau qhov kev lag luam uas xav tau cov qauv siab ntawm kev huv, kev tiv thaiv corrosion, thiab kav ntev.

Cov txiaj ntsig ntawm passivating stainless hlau muaj xws li:

• Txhim kho corrosion kuj

• Tshem tawm cov khoom siv hlau embedded

• Tshem tawm ntawm qhov chaw paug

• Txhim kho qhov tsos

• Extended kev pab cuam lub neej nyob rau hauv hnyav ib puag ncig

sakysteel uapom zoo kom passivation tshwj xeeb tshaj yog rau cov khoom siv stainless siv hauv marine, tshuaj, zaub mov qib, thiab tshuaj ua lag luam.

Thaum twg Koj Yuav Tsum Passivate Stainless Hlau?

Passivation yuav tsum tau txiav txim siab tom qab ib qho txheej txheem uas tuaj yeem nthuav tawm lossis kis kab mob ntawm cov hlau tsis huv:

• Machining los yog txiav

• Vuam los yog brazing

• Pickling los yog descaling

• Sib tsoo los yog polishing

• Kuaj nrog cov cuab yeej carbon steel

• Tshaj tawm cov kab mob los yog ib puag ncig nrog chloride

Yog tias koj cov khoom tsis muaj cov cim qhia txog kev tsis muaj xim, kev sib kis, lossis txo qhov kev tiv thaiv corrosion, nws yog lub sijhawm los txiav txim siab passivation.

Cov qib Stainless hlau twg tuaj yeem Passivated?

Feem ntau cov qib stainless hlau tuaj yeem passivated, tab sis cov txiaj ntsig tuaj yeem sib txawv raws li cov alloy.

sakysteel uamuab cov lus qhia xaiv cov khoom siv los pab cov neeg siv khoom xaiv cov qib stainless uas passivate zoo thiab ua tau zoo nyob rau hauv ib puag ncig corrosive.

Yuav Ua Li Cas Passivate Stainless Hlau: Cov txheej txheem ib ntus

Muaj ob yam tseem ceeb ntawm cov neeg ua haujlwm passivation siv hauv kev lag luam:

• Nitric acid-raws likev daws teeb meem

• Citric acid-raws likev daws teeb meem (ntau dua ib puag ncig tus phooj ywg)

Ntawm no yog cov ntsiab lus dav dav ntawm cov txheej txheem passivation:

Kauj Ruam 1: Ntxuav Qhov Nto

Kev tu kom huv yog qhov tseem ceeb ua ntej passivation. Txhua yam av, roj, roj, lossis cov khoom seem tuaj yeem cuam tshuam cov tshuaj tiv thaiv.

Cov txheej txheem ntxuav muaj xws li:

• Alkaline tshuaj ntxuav

• Degreasers

• Detergent daws

• Ultrasonic tu (rau qhov me me)

Yaug nrog dej huv thiab qhuav yog tias xav tau.

Kauj Ruam 2: Tshem tawm los yog Pickle (yog tias xav tau)

Yog hais tias lub stainless hlau nto muaj hnyav scale, weld oxides, los yog discoloration, ua apicklingtxheej txheem ua ntej passivation.

Pickling tshem tawm:

• Oxide txheej

• Weld discoloration

• Kub tint

Pickling feem ntau yog ua nrog cov kua qaub uas muaj zog dua li nitric-hydrofluoric acid lossis pickling paste. Tom qab pickling, yaug kom huv si ua ntej mus rau passivation.

Kauj ruam 3: Siv Passivation Solution

Raus qhov ntxuav hauv ib da dej passivation los yog siv cov tshuaj manually.

Nitric acid txoj kev:

• Cov ntsiab lus: 20-25% nitric acid

• Kub: 50-70 ° C

• Sijhawm: 20-30 feeb

Citric acid txoj kev:

• Cov ntsiab lus: 4-10% citric acid

• Kub: 40-60 ° C

• Sijhawm: 30-60 feeb

Ib txwm sivyas los yog stainless hlau ntimkom tsis txhob kis kab mob thaum lub sij hawm immersion.

Kauj Ruam 4: Yaug kom huv si

Tom qab lub sij hawm yuav tsum tau nyob rau hauv lub passivation da dej, yaug ib feem nrogdeionized los yog distilled dej. Cov dej kais dej yuav tso tseg cov zaub mov los yog impurities.

Xyuas kom tag nrho cov acid residue raug tshem tawm tag nrho.

Kauj Ruam 5: Qhuav lub Nto

Qhuav siv compressed cua los yog ntaub huv si. Tsis txhob rov kis tau los ntawm cov cuab yeej carbon steel los yog cov ntaub ntawv qias neeg.

Rau cov ntawv thov tseem ceeb (piv txwv li, kws kho mob lossis kev kho mob), cov khoom yuav qhuav rau hauv chav huv lossis chav hla dhau.

Yeem: Ntsuas Qhov Nto

Passivated qhov chaw yuav raug sim siv:

• Kev kuaj tooj liab sulfate(ASTM A967): Tshawb xyuas cov hlau tsis muaj hlau

• High-humidity chamber test: Exposes qhov chaw rau qhov chaw ntub dej kom kuaj xyuas corrosion

• Kev ntsuas dej los yog tshuaj tsuag ntsev: Rau kev ntsuam xyuas kev ua tau zoo corrosion ntau dua

sakysteel uasiv ASTM A967 thiab A380 cov qauv los txheeb xyuas qhov ua tau zoo thiab ua kom pom kev tiv thaiv corrosion.

Cov lus qhia txog kev nyab xeeb rau Passivation

• Yuav tsum hnav cov iav tiv thaiv: hnab looj tes, tsom iav, apron

• Ua hauj lwm nyob rau hauv ib qho chaw zoo ventilated

• Neutralize thiab pov tseg cov kua qaub raws li cov cai hauv zos

• Tsis txhob siv cov txhuam hlau los yog cov cuab yeej uas tuaj yeem rov ua kom cov pa paug

• Khaws cov khoom passivated hauv qhov chaw huv, qhuav

Daim ntawv thov uas yuav tsum tau Passivated Stainless hlau

Passivation yog qhov tseem ceeb rau cov khoom siv hauv:

• Cov khoom siv ua zaub mov thiab dej haus

• Kev kho mob thiab tshuaj machinery

• Aerospace thiab aviation qauv

• Cov nroj tsuag tshuaj thiab petrochemical

• Kev tsim khoom semiconductor

• Marine thiab offshore installations

sakysteel uamuab passivation-npaj stainless hlau cov khoom rau tag nrho cov saum toj no daim ntaub ntawv, backed los ntawm cov ntaub ntawv traceability thiab zoo certification.

Alternatives thiab Related Surface Treatments

Ntxiv rau passivation, qee qhov haujlwm yuav tau txais txiaj ntsig los ntawm:

• Electropolishing:Tshem tawm ib txheej txheej nyias rau ultra-ntxuav thiab du tiav

• Mechanical polishing:Ua kom lub ntsej muag ci thiab tshem tawm cov kab mob

• Pickling:Muaj zog dua passivation, siv los ntxuav welds thiab scaling

• Cov txheej txheem tiv thaiv:Epoxy, Teflon, los yog ceramic txheej rau ntxiv durability

Thamsakysteel ualos txiav txim qhov zoo tshaj plaws tom qab kev kho mob rau koj daim ntawv thov stainless.

Xaus: Yuav ua li cas Passivate Stainless hlau rau kev ua tau zoo tshaj plaws

Passivation yog ib qho tseem ceeb ua tiav cov txheej txheem uas txhim khu kev txhim kho corrosion ntawm stainless hlau los ntawm kev siv tshuaj ntxuav thiab kho nws cov txheej txheem tiv thaiv chromium oxide. Txawm hais tias koj tab tom ua haujlwm hauv kev lag luam khoom noj, kev tsim tshuaj, lossis kev tsim khoom hauv hiav txwv, ua rau koj cov khoom tsis muaj steel hlau ua kom lawv ua tau zoo tshaj plaws hauv qhov chaw hnyav.

Nrog kev tu kom zoo, immersion, yaug, thiab kev sim, stainless hlau tuaj yeem ua tiav nws lub peev xwm tag nrho hauv kev ua haujlwm ntev thiab tiv thaiv xeb. Thiab nrog kev txhawb nqa ntawm tus neeg muag khoom zoo lisakysteel ua, koj tuaj yeem xyuas kom meej tias koj cov ntaub ntawv stainless yog ua tiav thiab npaj rau kev pabcuam.