Pickling thiab Passivation ntawm Stainless Steel yog dab tsi?

Cov hlau tsis xeb yog lub npe nrov rau nws txoj kev tiv taus xeb, kev ruaj khov, thiab qhov chaw huv si. Txawm li cas los xij, thaum lub sijhawm tsim khoom xws li vuam, txiav, thiab tsim, nws qhov chaw tuaj yeem raug cuam tshuam los ntawm cov nplai, oxides, lossis hlau ua qias tuaj. Txhawm rau kho thiab txhim kho kev tiv thaiv xeb, ob txoj hauv kev kho mob tom qab kho tau siv:kev ua kua txobthiabkev ua kom tsis muaj zog.

Hauv tsab xov xwm no, peb yuav tshawb nrhiav seb cov txheej txheem no muaj dab tsi, vim li cas lawv thiaj tseem ceeb, thiab lawv txawv li cas. Txawm tias koj nyob hauv kev tsim kho, kev ua zaub mov, lossis kev tsim khoom siv roj av, kev nkag siab txog kev pickling thiab passivation yog qhov tseem ceeb rau kev ua kom cov hlau tsis xeb ua haujlwm tau ntev.

Pickling yog dab tsi?

Pickling yog ib qho txheej txheem tshuaj lom neeg uas tshem tawm cov tshuaj lom neegcov pa phem ntawm qhov chawxws li cov nplai vuam, xeb, xim kub, thiab cov oxides ntawm qhov chaw ntawm cov hlau tsis xeb. Cov txheej txheem no feem ntau siv cov tshuaj nitric acid thiab hydrofluoric acid los yaj cov khoom tsis huv uas kev ntxuav tshuab tsis tuaj yeem tshem tawm.

Yuav ua li cas Pickling Ua Haujlwm:

• Cov hlau tsis xeb raug kho nrog cov kua qaub (feem ntau yog los ntawm kev raus dej, txhuam, lossis txau)

• Cov tshuaj reacts nrog oxides thiab nplai ntawm cov hlau nto

• Cov kuab paug no raug yaj thiab ntxuav tawm, qhia txog qhov chaw huv si, tsis muaj dab tsi ntawm cov hlau tsis xeb.

Kev ntxuav yog qhov tseem ceeb thaum cov hlau tsis xeb tau kho cua sov lossis vuam, vim tias qhov kub tsim cov txheej oxide tsaus uas tuaj yeem ua rau tsis kam tiv taus xeb yog tias tsis kho.

Passivation yog dab tsi?

Passivation yog ib qho txheej txheem tshuaj sib cais uas ua rau kom muaj zog duatxheej oxide ntujntawm qhov chaw ntawm cov hlau tsis xeb. Thaum pickling tshem tawm cov pa phem, 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:

• Cov hlau tsis xeb uas tau ntxuav lawm raug kho nrog ibnitric acid los yog citric acidkev daws teeb meem

• Cov kua qaub tshem tawm cov hlau dawb thiab lwm yam khoom txawv teb chaws ntawm qhov chaw

• Ib qho nyias nyias, sib xwstxheej chromium oxidetsim tau yam tsis muaj kev ntshai thaum muaj cua lossis oxygen

Kev siv tshuaj passivation tsis tshem tawm cov nplai lossis cov txheej oxide. Yog li ntawd, nws feem ntau ua tiavtom qab picklinglos muab qhov siab tshaj plaws corrosion tsis kam.

Qhov Txawv Tseem Ceeb Ntawm Pickling thiab Passivation

Txawm hais tias ob qho txheej txheem cuam tshuam nrog kev kho acid, lawv ua haujlwm sib txawv:

• Kev ua kua txobtshem tawm cov oxides thiab nplai

• Kev ua kom tsis muaj zogtshem tawm cov hlau dawb thiab txhawb nqa ib txheej oxide tiv thaiv

• Pickling yog ntau dua thiab muaj hydrofluoric acid

• Kev siv passivation yog gentler thiab feem ntau siv nitric lossis citric acid

• Pickling hloov qhov tsos ntawm qhov chaw; passivation tsis hloov pauv qhov tiav.

Rau cov khoom ua los ntawm cov hlau tsis xeb uas ua tau zoo heev, ob qho txheej txheem no feem ntau siv ua ntu zus kom ntseeg tau tias qhov chaw huv thiab tiv taus xeb.

Thaum Twg Cov Txheej Txheem No Yuav Tsum Tau Ua?

Pickling thiab passivation raug pom zoo rau cov xwm txheej hauv qab no:

• Tom qabvuamkom tshem tawm cov xim kub thiab cov xim oxide

• Ua raws limachining los yog sib tsoo, uas yuav ua rau muaj kev sib kis ntawm cov hlau

• Tom qabkev kho cua sov, qhov twg cov nplai thiab xim tuaj yeem tsim tau

• Rauchav huv thiab kev siv tu cev, qhov twg qhov huv ntawm qhov chaw yog qhov tseem ceeb

• In ib puag ncig hauv dej hiav txwv lossis tshuaj lom neeg, qhov twg yuav tsum tau ua kom zoo dua qhov kev tiv thaiv corrosion

Los ntawm kev sivsakysteel'scov hlau tsis xeb zoo thiab siv cov txheej txheem kho tom qab kom zoo, koj cov khoom siv yuav kav ntev dua thiab ua haujlwm zoo dua nyob rau hauv cov xwm txheej hnyav.

Cov txiaj ntsig ntawm Pickling thiab Passivation

Kev ua cov kev kho mob no ua rau muaj ntau yam zoo:

• Rov qab kho qhov corrosion tag nrho

• Txhim kho qhov huv ntawm qhov chaw

• Tshem tawm cov kuab paug uas nkag mus rau hauv

• Ua kom lub neej ntawm cov hlau tsis xeb ntev dua

• Npaj cov khoom siv rau kev pleev xim lossis txheej

Rau cov lag luam xws li tshuaj, kev ua zaub mov, thiab roj & roj av, pickling thiab passivation tsis yog xaiv tau - lawv yog qhov yuav tsum tau ua rau kev tswj hwm cov khoom kom zoo thiab ua raws li cov qauv thoob ntiaj teb.

Cov Qauv Kev Lag Luam rau Pickling thiab Passivation

Muaj ntau tus qauv thoob ntiaj teb piav qhia txog cov txheej txheem thiab cov lus qhia:

• ASTM A380Kev coj ua tus qauv rau kev ntxuav, tshem tawm cov av nplaum, thiab passivation

• ASTM A967Tug: Cov Lus Qhia Txog Kev Kho Mob Passive

• EN 2516Tom ntej: Cov qauv European rau aerospace stainless hlau passivation

Nco ntsoov xyuas kom koj cov khoom siv hlau tsis xeb ua tau raws li cov qauv no, tshwj xeeb tshaj yog thaum lawv siv rau hauv qhov chaw rhiab heev lossis muaj kev pheej hmoo siab.sakysteel, peb muab cov ntaub ntawv thiab kev txhawb nqa kev siv tshuab uas ua raws li cov qauv thoob ntiaj teb no.

Cov Txheej Txheem Siv Ntau

Nyob ntawm qhov loj me, cov duab, thiab ib puag ncig, cov txheej txheem no yuav raug siv rau ntau txoj hauv kev sib txawv:

• Kev Raus Dej (Lub Taub Hau): Haum rau cov khoom me me mus rau nruab nrab

• Tshuaj tsuag picklingSiv rau cov khoom siv loj lossis kev teeb tsa

• Daim Ntawv Thov TxhuamZoo tagnrho rau kev kho mob hauv zos xws li cov seams weld

• Kev ncig ntshavSiv rau hauv cov kav dej rau kev kho mob sab hauv

Kev yaug thiab ua kom tsis muaj zog tom qab kho yog qhov tseem ceeb kom tiv thaiv cov kua qaub seem.

Kev Xav Txog Ib puag ncig thiab Kev Nyab Xeeb

Ob qho tib si pickling thiab passivation muaj cov tshuaj uas yuav tsum tau ua tib zoo tuav:

• Ib txwm hnav cov khoom siv tiv thaiv tus kheej (PPE)

• Ua kom cov tshuaj pov tseg tsis muaj zog ua ntej pov tseg

• Ua kev kho mob rau hauv qhov chaw uas muaj cua nkag zoo lossis hauv qab kev rho pa taws tawm

• Ua raws li cov cai ib puag ncig hauv zos txog kev siv thiab pov tseg cov kua qaub

Xaus lus

Kev ntxuav thiab passivation yog cov kauj ruam tseem ceeb hauv kev ua kom cov hlau tsis xeb tseem khaws nws cov kev tiv thaiv xeb thiab kev ua haujlwm ntev. Thaum pickling ntxuav thiab tshem tawm cov nplai, passivation ua rau cov txheej oxide tiv thaiv muaj zog - ua ke, lawv npaj cov hlau tsis xeb rau cov ntawv thov uas xav tau ntau tshaj plaws.

Kev xaiv cov hlau tsis xeb zoo yog qhov tseem ceeb ib yam li kev kho nws kom zoo. Yog vim li ntawd cov lag luam thoob plaws ntiaj teb thiaj ntseeg siabsakysteelkom xa cov ntaub ntawv pov thawj, cov khoom siv hlau tsis xeb uas tsis xeb nrog rau kev txhawb nqa kev ua thiab kev tsim khoom. Rau cov kev daws teeb meem txhim khu kev qha hauv kev ua tau zoo ntawm cov hlau tsis xeb, tig mus rausakysteel—koj tus khub hlau uas koj ntseeg siab.