1. Qhov sib txawv ntawm N4/Ni 200 thiab N6/Ni 201 yog dab tsi, thiab vim li cas qhov no tseem ceeb rau kev xaiv cov khoom siv?
Qhov tseem ceeb thiab tseem ceeb sib txawv yog nyob rau hauv lawv cov ntsiab lus carbon, uas dictates lawv qhov siab tshaj plaws kev pab cuam kub.
N4 / Nickel 200 (UNS N02200): Qhov no yog tus qauv lag luam ntshiab npib tsib xee (99.6% min Ni) nrog cov ntsiab lus siab tshaj plaws ntawm 0.15%.
N6 / Nickel 201 (UNS N02201): Qhov no yog qib qis - carbon qib ntawm cov khoom lag luam ntshiab npib tsib xee, nrog cov ntsiab lus siab tshaj plaws ntawm 0.02%.
Vim li cas qhov no yog qhov tseem ceeb: Kev pheej hmoo ntawm graphitization
Ntawm qhov kub siab tshaj li ntawm 315℃(600℃F), cov pa roj carbon hauv cov kua dej ua rau lub xov tooj ntawm tes. Nyob rau hauv Nickel 200, cov ntsiab lus siab carbon precipitates tawm raws li ib tug tas mus li, nkig network ntawm graphite ntawm lub grain ciam teb. Cov txheej txheem no, hu ua graphitization, hnyav txo cov khoom ductility thiab cuam tshuam toughness, ua rau nws muaj kev puas tsuaj rau cov pob txha tawg thaum muaj kev ntxhov siab.
Txoj Cai Xaiv:
Rau corrosion kuj daim ntaub ntawv hauv qab 315 degree, Nickel 200 (N4) yog haum thiab feem ntau yooj yim muaj.
Rau txhua yam qauv, thauj khoom -cov kabmob, lossis siab- daim ntawv thov kub siab tshaj 315 degree, Nickel 201 (N6) yog qhov yuav tsum tau thiab muaj kev nyab xeeb xaiv vim nws tiv thaiv daim ntawv no ntawm embrittlement.
2. Cov khoom tshwj xeeb dab tsi pom zoo rau kev siv 99.98% ntshiab nickel bar hauv hluav taws xob thiab aerospace kev siv?
Qhov purity siab heev (99.98%) ntawm cov qib zoo li Nickel 270 lub hom phiaj tshwj xeeb ntawm lub cev tsis yog lub zog txhua yam lossis kev tiv thaiv corrosion.
Exceptional Magnetic Properties: Ultra- npib tsib xee ntshiab muaj qhov sib nqus zoo permeability thiab qis coercivity, ua rau nws zoo tagnrho rau kev sib nqus shielding hauv cov khoom siv hluav taws xob rhiab heev thiab rau cov khoom hauv cov cuab yeej precision.
Tswj Thermal Expansion: Nws muaj qhov qis thiab kwv yees coefficient ntawm thermal expansion. Qhov no yog qhov tseem ceeb hauv cov ntawv thov uas yuav tsum muaj kev ruaj ntseg nyob rau hauv thermal cycling, xws li hauv aerospace thiab kev ntsuas kev tshawb fawb.
High Ductility thiab Formability: Nws tuaj yeem ua rau txias heev - ua haujlwm thiab tsim ua cov duab nyuaj yam tsis muaj kev tawg, uas yog qhov tseem ceeb rau kev tsim cov khoom sib txawv.
Superior Electrical Conductivity: Thaum tsis zoo li tooj liab, nws cov conductivity zoo ua ke nrog lwm yam khoom (xws li corrosion kuj) ua rau nws haum rau cov khoom siv hluav taws xob tshwj xeeb thiab cov khoom siv.
Hauv cov niches no, qhov kev ua tau zoo ntawm lub kaw lus ncaj qha nyob ntawm cov khoom siv lub cev zoo, ua kom pom tseeb tus nqi ntawm cov khoom siv ultra{0}} ntshiab.
3. Hauv kev lag luam tshuaj lom neeg, rau cov kev pabcuam corrosive tshwj xeeb yog Nickel 201 bar cov khoom nyiam ntawm kev tsim kho?
Nickel 201 bar Tshuag yog teev rau cov khoom tseem ceeb xws li agitator shafts, valve stems, thiab fasteners nyob rau hauv ib puag ncig uas tawm tsam lwm yam hlau.
Caustic Alkalies (NaOH, KOH): Qhov no yog nws daim ntawv thov tseem ceeb. Nws muaj kev tiv thaiv zoo rau tag nrho cov ntsiab lus ntawm sodium thiab potassium hydroxide, txawm tias nyob rau hauv qhov kub thiab txias thiab nyob rau hauv lub xeev molten, qhov twg stainless hlau yuav sai sai poob los ntawm caustic cracking.
Qhuav Halogen Gases (Cl₂, F₂): Nws muaj qhov ua tau zoo heev rau cov tshuaj chlorine qhuav thiab fluorine roj mus txog rau qee qhov kub siab (~ 535℃rau Cl₂), tsim cov txheej txheem tiv thaiv nickel halide.
Neutral thiab Alkaline Salt Solutions: Nws ua tau zoo heev nyob rau hauv uas tsis yog -oxidizing ntsev ib puag ncig.
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. Nws tsis haum rau oxidizing acids xws li nitric acid.
4. Los ntawm kev tsim cov kev xav, dab tsi yog cov teeb meem tseem ceeb hauv machining bar Tshuag los ntawm cov nickel ntshiab?
Ntshiab npib tsib xee yog qhov tsis zoo ntawm cov gummy thiab tawv, nthuav qhia cov kev cov nyom tshwj xeeb uas yuav tsum tau hloov kho cov kev coj ua piv rau cov hlau.
Kev Sib Tw: Kev Ua Haujlwm nrawm nrawm: Cov hlau ua haujlwm- tawv sai sai. Lub teeb, rub txiav yuav ua rau lub ntsej muag tawv, ua rau kev hla dhau mus nyuaj heev thiab ua rau cov cuab yeej hnav sai.
Cov kev coj ua zoo tshaj:
Tool Geometry: Siv cov cuab yeej ntse, zoo-rake cov cuab yeej nrog polished flutes kom txo tau txiav quab yuam thiab tiv thaiv cov khoom adhesion (tsim- nce ntug).
Kev Txiav Txim Siab: Ua kom muaj kev sib sib zog nqus txaus thiab tus nqi noj khoom noj kom ruaj khov kom ntseeg tau tias cov cuab yeej ib txwm txiav hauv qab ua haujlwm- txheej tawv tawv tsim los ntawm kev dhau dhau los. "Cia lub cuab tam tom."
Rigid Setup: Lub tshuab thiab workpiece yuav tsum tau tuav nruj kom nqus tau lub siab txiav quab yuam thiab tiv thaiv kev sib tham.
Coolant: Siv lub luag haujlwm hnyav, chlorinated los yog sulfurized txiav kua los lubricate qhov txiav, nqa tawm cua sov, thiab tiv thaiv cov chips los ntawm vuam rau lub cuab yeej.
Machining nyob rau hauv lub annealed mob yog preferable. Rau kev ua haujlwm hnyav, qhov nruab nrab annealing tej zaum yuav tsim nyog los kho cov ductility.
5. Dab tsi yog "Factory Quality" rau siab -purity nickel bar, thiab daim ntawv pov thawj dab tsi uas tus neeg yuav khoom xav tau?
"Lub Hoobkas Zoo" tsis yog lo lus lag luam; nws yog ib tug guarantee ntawm traceability, sib xws, thiab kev ua tau zoo, txheeb xyuas los ntawm cov ntaub ntawv nruj thiab kuaj.
Tus neeg yuav khoom tshaj lij yuav tsum xav tau:
Mill Test Certificate (MTC) rau EN 10204 3.1/3.2: Qhov no yog ib qho yuav tsum tau, traceable daim ntawv pov thawj los ntawm lub zeb uas txheeb xyuas cov khoom ua raws li qhov kev txiav txim specification. Nws suav nrog:
Kev tshuaj ntsuam xyuas tshuaj tiag tiag: Kev lees paub qib (xws li cov pa roj carbon tsawg rau Ni 201) thiab purity.
Cov cuab yeej siv tshuab tiag tiag: Lub zog tensile, lub zog tawm los, thiab elongation los ntawm kev sim ua ntawm qhov tseeb qhov kub / ntau.
Kev txheeb xyuas cov khoom zoo (PMI): Spectroscopic pov thawj ntawm cov hlau chemistry ntawm cov khoom tau txais, muab kev kuaj zaum kawg tiv thaiv cov khoom sib xyaw-ups.
Daim Ntawv Qhia Dimensional: Kev lees paub qhov bar txoj kab uas hla, qhov ncaj, thiab qhov ntev yog nyob rau hauv qhov kev pom zoo.
Daim ntawv pov thawj ntawm qhov chaw: xyuas qhov saum npoo yog tsis muaj seams, kab nrib pleb, thiab lwm yam kev puas tsuaj.
Rau cov ntawv thov tseem ceeb, kev sim ntxiv xws li Kev Ntsuas Ultrasonic (UT) ntawm cov khoom lag luam bar yuav raug teev los xyuas kom meej lub suab sab hauv. Xav tau cov ntawv pov thawj no kom ntseeg tau tias "Factory Quality" nickel bar yuav ua tau raws li qhov xav tau hauv koj daim ntawv thov.
