1. Dab tsi yog qhov tseem ceeb metallurgical tus kheej ntawm Nickel 200, thiab nws cov yam ntxwv txhais li cas?
Nickel 200 (UNS N02200) yog cov khoom lag luam ntshiab, wrought npib tsib xee nrog cov ntsiab lus tsawg kawg nkaus nickel ntawm 99.6%. Nws tsis yog ib qho nyuaj alloy tab sis yog cov hlau ntshiab uas nws cov khoom tau muab los ntawm nws qhov xwm txheej thiab kev tswj xyuas cov kab mob kom zoo.
Defining yam ntxwv:
High Purity: Tus yuam sij rau nws qhov kev ua tau zoo yog nws cov ntsiab lus siab nickel, uas muab kev tiv thaiv corrosion zoo heev hauv ib puag ncig tshwj xeeb thiab siab ductility.
Lub ntsej muag -Centered Cubic (FCC) Structure: Cov qauv siv lead ua no muab Nickel 200 zoo heev ductility, formability, thiab toughness nyob rau hauv ntau qhov kub thiab txias.
Sib nqus: Nws yog ferromagnetic nyob rau hauv chav tsev kub, ib qho tseem ceeb sib txawv ntawm ntau austenitic stainless hlau thiab lwm yam nickel alloys.
Zoo Thermal thiab Hluav Taws Xob Conductivity: Txawm tias tsis siab npaum li tooj liab, nws cov conductivity tseem ceeb thiab feem ntau ua ke nrog nws cov kev tiv thaiv corrosion zoo dua.
Tswj cov ntsiab lus carbon: Nickel 200 muaj cov ntsiab lus siab tshaj plaws ntawm 0.15%, uas yog ib qho tseem ceeb sib txawv ntawm nws cov kwv tij, Nickel 201.
2. Nyob rau hauv qhov tshwj xeeb corrosive ib puag ncig puas Nickel 200 excel, thiab vim li cas nws thiaj li xaiv los ntawm stainless hlau?
Nickel 200 ua tau zoo nyob rau hauv ib puag ncig uas txo qis (tsis yog - oxidizing), alkaline, los yog koom nrog halogens, qhov tseeb qhov uas tsis muaj chromium oxide txheej ntawm cov hlau tsis huv.
Caustic Alkalies (xws li Sodium & Potassium Hydroxide): Qhov no yog Nickel 200's premier daim ntawv thov. Nws muaj kev tiv thaiv zoo rau txhua qhov ntau ntawm NaOH thiab KOH, txawm tias nyob rau qhov kub thiab txias hauv cov xeev molten. Cov hlau tsis muaj steel muaj qhov cuam tshuam rau kev ntxhov siab corrosion tawg thiab nrawm nrawm hauv cov xwm txheej no.
Neutral thiab Alkaline Salt Solutions: Nws ua tau zoo heev nyob rau hauv uas tsis yog -oxidizing ntsev ib puag ncig.
Halogens (Fluorine, Chlorine, Bromine): Nickel 200 qhia tau hais tias zoo heev tiv thaiv kom qhuav fluorine thiab chlorine roj mus txog rau tej qhov kub thiab txias (~ 550℃/ 1022℃F rau chlorine).
Txo cov kua qaub: Nws muaj kev tiv thaiv zoo rau hydrochloric thiab sulfuric acids, tab sis tsuas yog nyob rau hauv deaerated, dilute, thiab txias txias.
Vim li cas thiaj hla Stainless Hlau? Stainless hlau cia siab rau cov zaj duab xis passive Cr₂O₃ uas ruaj khov nyob rau hauv oxidizing tej yam kev mob (xws li nitric acid). Hauv kev txo qis thiab alkaline ib puag ncig uas tau teev tseg saum toj no, zaj duab xis no tawg. Nickel 200 qhov kev tiv thaiv yog muaj nyob rau hauv cov hlau nickel nws tus kheej, uas yog ntau thermodynamically ruaj khov nyob rau hauv cov kev mob tshwj xeeb.
3. Dab tsi yog qhov kev txwv tseem ceeb ntawm Nickel 200 rau kev ua haujlwm siab - kub, thiab dab tsi yog lwm txoj kev?
Qhov kev txwv tseem ceeb ntawm Nickel 200 yog nws qhov cuam tshuam rau graphitization thiab embrittlement ntawm qhov kub siab tshaj li ntawm 315℃(600℃F).
Lub Mechanism: Cov pa roj carbon nyob rau hauv Nickel 200 (txog 0.15%) yog nyob rau hauv cov tshuaj tov nyob rau hauv qis kub. Ntawm qhov ntsuas kub siab, cov pa roj carbon no dhau los ua lub xov tooj ntawm tes thiab precipitates tawm raws li kev txuas ntxiv, nkig ntawm graphite ntawm cov ciam teb. Cov txheej txheem no hnyav heev txo cov khoom ductility thiab cuam tshuam toughness, ua rau nws raug puas tsuaj los ntawm brittle fracture nyob rau hauv kev ntxhov siab.
Lwm txoj hauv kev: Nickel 201 (UNS N02201)
Nickel 201 yog qib qis - carbon qib ntawm cov khoom lag luam ntshiab nickel, nrog cov ntsiab lus siab tshaj plaws ntawm 0.02%.
Qhov no ultra- cov ntsiab lus qis carbon ua rau nws tiv thaiv rau daim ntawv no ntawm embrittlement.
Daim Ntawv Thov Txoj Cai: Rau ib qho kev tivthaiv lossis daim ntawv thov uas qhov kev pabcuam kub siab tshaj 315℃(600℃F), Nickel 201 yog qhov yuav tsum tau ua thiab xaiv kev nyab xeeb. Nickel 200 yuav tsum tau txwv rau kev pab cuam corrosion ntawm qis kub.
4. Dab tsi yog cov ntawv thov tseem ceeb ntawm Nickel 200 thoob plaws ntau yam kev lag luam?
Nickel 200 cov khoom tshwj xeeb ua rau nws tseem ceeb hauv ntau qhov haujlwm:
Kev Siv Tshuaj:
Caustic Evaporators thiab Cov Khoom Siv Ua Haujlwm: Rau kev tsim, ua kom pom tseeb, thiab tuav sodium hydroxide. Qhov no suav nrog cov kav dej, cov hlab ntsha, thiab cua sov coils.
Synthesis ntawm Plastics thiab Fibers: Siv nyob rau hauv cov tshuaj tiv thaiv hlab ntsha thiab hloov kab rau cov txheej txheem uas muaj corrosive catalysts thiab intermediates.
Khoom noj khoom haus & Pharmaceutical Processing:
Fatty Acid thiab Soap Manufacturing: Resistant nres los ntawm fatty acids thaum hydrogenation thiab lwm yam txheej txheem.
Khoom noj khoom haus- Cov Khoom Qib: Pom zoo siv qhov twg nws cov corrosion kuj thiab huv si tau txais txiaj ntsig, txawm tias nws yuav tsum tau ua kom zoo.
Electronics thiab Hluav Taws Xob Engineering:
Electron Tubes thiab Spark Gaps: Nws cov khoom siv hluav taws xob zoo thiab kev ua haujlwm zoo ib yam muaj nuj nqis.
Aerospace & Defense: Siv nyob rau hauv cov khoom uas xav tau nws cov khoom sib nqus lossis lub cev.
Lwm yam kev lag luam:
Caustic Cleaning Systems: Rau cov khoom siv tu.
Aerospace & Defense: Siv nyob rau hauv cov khoom uas xav tau nws cov khoom sib nqus lossis lub cev.
5. Los ntawm kev tsim khoom thiab kev siv lub neej kev xav, thaum twg qhov kev nqis peev hauv Nickel 200 yog qhov ncaj ncees?
Qhov kev ncaj ncees rau Nickel 200 yog qhov xwm txheej classic ntawm Tag Nrho Cov Tswv Cuab (TCO), qhov twg nws qhov kev ua tau zoo tsis sib xws hauv ib puag ncig tshwj xeeb tshaj nws cov nqi pib khoom siab.
Kev Ncaj Ncees Scenario 1: Caustic Ib puag ncig
Nyob rau hauv ib tug kub, concentrated caustic kev pab cuam, stainless hlau yuav sai sai poob vim caustic cracking. Ib qho kev ua tsis tiav tuaj yeem ua rau cov nroj tsuag kaw, kev nyab xeeb kev nyab xeeb, thiab teeb meem ib puag ncig. Qhov tseeb kev ntseeg ntawm Nickel 200 nyob rau hauv ib puag ncig no ua pov thawj nws cov nqi los ntawm kev tshem tawm kev puas tsuaj rau lub sijhawm poob.
Kev Txiav Txim Plaub Ntug 2: Siab -Nrhiav qhov yuav tsum tau muaj
Hauv kev ua zaub mov lossis kev ua tshuaj, Nickel 200 tiv thaiv kev sib kis ntawm cov khoom siv hlau. Tus nqi ntawm cov kab mob sib kis deb tshaj tus nqi rau cov khoom siv nickel.
Kev Ncaj Ncees Scenario 3: Lub cev muaj zog tshwj xeeb
Thaum nws cov khoom sib nqus lossis cov khoom siv hluav taws xob tshwj xeeb xav tau, feem ntau tsis muaj qhov hloov pauv. Nws cov nqi yog ncaj ncees los ntawm nws qhov kev ua haujlwm tshwj xeeb.
Xaus: Kev nqis peev hauv Nickel 200 yog qhov ncaj ncees thaum qhov chaw ua haujlwm tsis zoo rau nws cov kev tiv thaiv corrosion (tshwj xeeb yog caustics) lossis thaum nws lub cev muaj zog yog qhov tseem ceeb rau kev ua haujlwm ntawm cov khoom. Thaum pib tus nqi yuav khoom yog siab, tus nqi ntawm kev ua tsis tiav, poob qis, thiab kev tsim khoom poob rau qhov kev xaiv cov khoom tsis raug yog yuav luag ib txwm nyob deb dua, ua rau Nickel 200 yog qhov kev xaiv pheej yig tshaj plaws ntawm cov khoom vaj khoom tsev lub neej.
