Hauv ntiaj teb ntawm kev tsim hlau, kev kho saum npoo ntawm cov hlau tsis xeb yog ib qho txheej txheem tseem ceeb uas ua rau cov khoom siv ruaj khov, zoo nkauj, thiab tiv taus xeb. Ntawm Jindalai Steel Company, peb tshwj xeeb hauv kev muab cov khoom siv hlau tsis xeb zoo, thiab peb nkag siab txog qhov tseem ceeb ntawm cov txheej txheem kho saum npoo zoo. Cov blog no yuav nkag mus rau hauv ntau yam thev naus laus zis kho saum npoo ntawm cov hlau tsis xeb, tsom mus rau cov txheej txheem feem ntau: pickling thiab passivation.
Cov Txheej Txheem Kho Qhov Chaw Rau Cov Hlau Stainless Yog Dab Tsi?
Cov txheej txheem kho qhov chaw rau cov hlau tsis xeb tuaj yeem faib ua ntau pawg raws li cov txheej txheem kho tshuab thiab cov txheej txheem tshuaj lom neeg. Cov txheej txheem kho tshuab suav nrog kev txhuam, kev sib tsoo, thiab kev tua, uas hloov pauv qhov chaw kom zoo dua qub thiab tshem tawm cov qhov tsis zoo. Cov txheej txheem tshuaj lom neeg, ntawm qhov tod tes, suav nrog kev siv cov tshuaj tshwj xeeb los ua kom tiav cov khoom xav tau, xws li kev tiv thaiv xeb zoo dua.
Pickling thiab Passivation: Cov Txheej Txheem Tseem Ceeb
Ob qho ntawm cov txheej txheem kho mob saum npoo uas siv ntau tshaj plaws rau cov hlau tsis xeb yog pickling thiab passivation.
Kev ntxuav yog ib txoj kev uas tshem tawm cov oxides, cov nplai, thiab lwm yam khoom tsis huv ntawm qhov chaw ntawm cov hlau tsis xeb. Qhov no feem ntau ua tiav los ntawm kev siv cov kua qaub sib xyaw, xws li hydrochloric lossis sulfuric acid. Cov txheej txheem ntxuav tsis yog tsuas yog ntxuav qhov chaw xwb tab sis kuj npaj nws rau kev kho ntxiv, kom ntseeg tau tias cov txheej txheem lossis cov khoom tiav zoo tshaj plaws.
Qhov kev ua kom cov hlau tsis xeb (passivation) yog ib qho txheej txheem uas ua rau cov txheej oxide ntuj ntawm cov hlau tsis xeb zoo dua, thiab ua rau nws tiv thaiv tau xeb ntxiv. Feem ntau, qhov no yog ua tiav los ntawm kev kho cov hlau nrog cov kua uas muaj citric lossis nitric acid. Kev ua kom cov hlau tsis xeb zoo yog qhov tseem ceeb rau kev tswj kom cov hlau tsis xeb nyob rau hauv qhov chaw nyuaj, ua rau nws yog ib kauj ruam tseem ceeb hauv cov txheej txheem kho qhov chaw.
Cov Lus Qhia Tshwj Xeeb rau Pickling thiab Passivation
Thaum nws los txog rau pickling thiab passivation, ua raws li cov lus qhia tshwj xeeb yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo tshaj plaws.
1. Cov Lus Qhia Txog Kev Kho Mob Pickling:
- Xyuas kom qhov chaw ntawm cov hlau tsis xeb huv si thiab tsis muaj roj lossis av qias neeg.
– Npaj cov kua pickling raws li cov lus qhia ntawm cov chaw tsim khoom, xyuas kom meej tias muaj cov kua qaub ntau txaus.
– Muab cov khoom ua los ntawm cov hlau tsis xeb tso rau hauv cov tshuaj rau lub sijhawm uas pom zoo, feem ntau yog li ob peb feeb mus txog ob peb teev, nyob ntawm seb cov txheej oxide tuab npaum li cas.
- Yaug kom huv si nrog dej kom tshem tawm cov kua qaub thiab tshem tawm cov seem.
2. Cov Lus Qhia Txog Kev Kho Mob Passivation:
- Tom qab ua kom cov hlau tsis xeb puas lawm, yaug cov hlau uas tseem tshuav kom tshem tawm cov kua qaub uas seem.
- Npaj cov tshuaj passivation, xyuas kom meej tias nws ua tau raws li cov lus qhia xav tau.
– Muab cov hlau tsis xeb tso rau hauv cov tshuaj passivation rau lub sijhawm pom zoo, feem ntau ntawm 20 txog 30 feeb.
- Yaug nrog dej deionized kom tshem tawm cov tshuaj passivation seem thiab ziab cov khoom kom qhuav tag.
Qhov Sib Txawv Ntawm Pickling Thiab Passivation
Txawm hais tias ob qho tib si pickling thiab passivation yog qhov tseem ceeb rau kev kho qhov chaw ntawm cov hlau tsis xeb, lawv ua haujlwm sib txawv. Pickling feem ntau yog tsom mus rau kev ntxuav qhov chaw thiab tshem tawm cov pa phem, thaum passivation lub hom phiaj yog txhim kho cov txheej oxide tiv thaiv, txhim kho kev tiv thaiv corrosion. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev xaiv txoj kev kho mob raws li daim ntawv thov tshwj xeeb thiab cov xwm txheej ib puag ncig.
Xaus lus
Ntawm Jindalai Steel Company, peb paub tias kev kho saum npoo ntawm cov hlau tsis xeb tsis yog ib kauj ruam hauv cov txheej txheem tsim khoom xwb; nws yog ib qho tseem ceeb uas txiav txim siab lub neej ntev thiab kev ua tau zoo ntawm cov khoom kawg. Los ntawm kev siv cov thev naus laus zis kho saum npoo ntawm cov hlau tsis xeb siab heev, suav nrog kev pickling thiab passivation, peb xyuas kom meej tias peb cov khoom ua tau raws li cov qauv siab tshaj plaws ntawm qhov zoo thiab kev ua haujlwm ntev. Txawm hais tias koj xav tau cov hlau tsis xeb rau kev tsim kho, tsheb, lossis lwm yam kev lag luam, peb qhov kev txawj ntse hauv cov txheej txheem kho saum npoo ntawm cov hlau lav tias koj tau txais cov kev daws teeb meem zoo tshaj plaws rau koj cov kev xav tau.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-03-2024
