1. Dab tsi yog qhov tseem ceeb ntawm Monel 400 thiab Monel K500, thiab vim li cas qhov tseem ceeb rau kev xaiv cov khoom siv hauv cov ntawv raj?
Qhov tseem ceeb sib txawv lus dag nyob rau hauv lawv cov hlau metallurgical thiab resulting cov khoom siv kho tshuab. Ob alloys sib koom nrog nibel zoo sib xws- tooj liab koob muaj pes tsawg leeg, tab sis Monel} Lub ntsej muag tawv}} monel 400 tsis yog.
Monel 400 (tsis yog N04400): Qhov no yog cov khoom - daws alloy. Nws lub zog thiab hardness tau muab los ntawm ntuj sib xyaw ntawm Nickel (kwv yees li ntawm cov hlau, nrog cov hlau me me, manganese, thiab carbon. Nws yog muab thiab siv nyob rau hauv anealed lossis kub -} ua haujlwm mob. Nws cov cwj pwm tseem ceeb yog qhov ua tau zoo corrosion tsis kam, kev duility zoo, thiab muaj zog nruab nrab.
Monel K500 (tsis yog N05500): Qhov no alloy muaj tib Nickel {2} Tab sis yog txhim kho nrog ntxiv ntawm txhuas (2.3-3.15%) thiab titanium (0.35-0.85%). Cov ntsiab lus uas cia cov alloy kom cov txheej txheem kev kho cua sov hu ua kev ua kom muaj nag lossis daus). Tom qab kev daws teeb meem anealing kev kho, cov khoom siv tau yooj yim rau ib qho kev kub nrab nruab nrab (piv txwv li, 1100 ° F / 593 ° C rau ob peb teev). Qhov no ua rau cov nag lossis daus ntawm cov nplua, cov submicroscopic ntawm Ni₃ (Al, TI) thoob plaws hauv Matrix. Cov lus no cuam tshuam lub zog txav tsis muaj cov qauv crystal, nce cov alloy lub zog thiab hardness tsis muaj kev poob loj ntawm kev ua siab loj.
Vim li cas qhov no yog qhov tseem ceeb rau kev xaiv:
Qhov kev txiav txim siab no dictates daim ntawv thov.
Xaiv Monel 400 kav dej thaum cov tseem ceeb ntawm kev xav tau yog qhov ua tau zoo dua qub lossis cov khoom siv hlwb, cov dej hiav txwv
Xaiv Monel K500 Kav Pipe thaum daim ntawv thov xav ob leeg corrosion tsis kam ntawm MonelthiabLub zog siab dua, hardness, lossis tsis {-} gole gole cov yam ntxwv. Cov qauv piv txwv suav nrog:
TWJ Shaftshat Shafts thiab cov kiv cua sib tw hauv marine engineering.
Fasteners thiab bolts uas yuav tsum muaj lub zog siab hauv txoj kev muaj huab cua.
Tus kws kho hniav tuaj thiab cov scrapers hauv pulp thiab daim ntawv kev lag luam.
Cheebtsam hauv cov roj thiab roj zoo drilling cov cuab yeej.
Qhov tseem ceeb, monel 400 yog tus ua haujlwm rau cov yeeb yaj kiab corrosive convateance, thaum monel k500 yog ib qho tshwj xeeb, siab} lub zog version rau ntau cov kev ntsuas.
2. Nyob rau hauv uas tshwj xeeb corrosive ib puag ncig ua monel alloy kav o outsperform ntau ib txwm muaj stainless hlau zoo li 316L?
Monel 400 thiab K500 Kav Dej Excel nyob rau hauv ib puag ncig uas chlorides, thiab alkaline medols, thiab alkaline cov qauv storms zoo li 316L yuav raug kev txom nyem los ntawm kev tawm tsam corrosion lossis dav dav dav dav.
Chloride -} Ua rau muaj kev ntxhov siab hauv SCC (SCC): Cov kab mob ANTENTIMIBE NROG 316L yog cov kab mob siab, txawm nyob hauv cov tsheb ciav hlau thiab cov chaw kub. Monel alooys tau txhaj tshuaj rau chloride kev ntxhov siab corrosion, ua rau lawv xaiv thawj thawj thawj zaug rau:
Dej Txias Tshuab: ob qho tib si rau qhib - lub voj ntxig thiab hauv kev hloov cua sov.
Brine DREDS: hauv kev ua yeeb yaj kiab, tshuaj yej cov nroj tsuag, thiab cov tshuab tub yees.
Offshore & Marine Daim Ntawv Thov: Pipentry raug rau cov tshuaj ntsev thiab dej hiav txwv.
Hydrofluoric acid (HF) thiab fluorine: tshwj xeeb thaum muaj ib qho ntawm cov ntaub ntawv me me rau kev tuav hydrofluoric acid. Stainless cov hlau yog tau tawm tsam sai. Qhov no ua rau Monel kav tseem ceeb nyob rau hauv cov tshuaj thiab petrochemical Industries rau HF Alkylation chav nyob thiab cov txheej txheem fluorination.
Sulfuric thiab hydrochloric acids: hauv deagerated, dilute kev daws teeb meem, monel 400 yam ua kom pom zoo tsis kam. Nws ua tau zoo dua zoo dua li cov hlau tsis muaj nyob rau hauv tsis - ecidizing ib puag ncig cov acids no. Txawm li cas los xij, nws tsis haum rau oxidizing acids zoo li nitric acid, qhov twg stainless hlau ua tau zoo dua.
Caustic Alkalies: Monel alloys tswj cov alkalis zoo li socrod, txawm tias ntawm cov hlwv kub thiab hauv Molassium thiab hauv cov hlwv hauv Molcastium, qhov twg cov hlau uas tsis muaj zog ntxiv tuaj yeem ua rau muaj kev tawg ua kom muaj caustic.
Cast -}} Cov dej hiav txwv tawm tsam rau kev yaig, ua rau nws muaj zog tshaj plaws, ua kom zoo rau cov dej hiav txwv siab, tso kua mis}
3. Dab tsi yog qhov tseem ceeb fabrication thiab vuam kev txiav txim siab rau Monel Alloy kav?
Cov khoom siv roj av thiab cov kav nkoj vuam tseev kom muaj cov txheej txheem tshwj xeeb kom tswj lawv cov kev ua kom ncaj ncees thiab kho tshuab.
Kev ua haujlwm kub: ob qho tib si alloys tuaj yeem kub - ua haujlwm nyob rau thaj tsam ntawm 1700-2150 ° F (927-1177 ° C). Sai sai txias los ntawm kev lom zem kub tau pom zoo kom tiv thaiv emgrittlement.
Cov ua haujlwm txias: Monel 400 ua haujlwm - hashens sai, zoo ib yam li cov hlau tsis huv. Yog li ntawd, dav bend radii thiab theem nrab anealing kev kho mob feem ntau tsim nyog thaum lub sij hawm ua haujlwm txias xws li dabtsi yog khoov. Monel K500 feem ntau muab rau hauv cov tshuaj - Annealed mob rau kev sib cav thiab yog dej nag- tawvtom qabTxhua txoj kev tsim thiab machining tiav.
Vuam:
Kev nyiam huv yog qhov chaw tiv thaiv: Txhua qhov chaw tau welded yuav tsum tau ceev ceev roj, roj, thiab tej yam paug. Muaj cov leej faj, txhuas, lossis phosphorus tuaj yeem ua rau sawv tau.
Xaiv cov tub rog: rau Monel 400, cov tub rog nyiam ua haujlwm hlau yog Monel Muab tub lim hlau 60 (ONNICU - 7). Rau Monel K500, tus qauv xyaum yog rau WELD siv monel 400 {{{}}} hom muab tub lim hlau (ornicu - 7). WELD qhov nyiaj yuav tom qab ntawd muaj corrosion tsis kam ntawm monel 400 tab sis yuav tsis muaj hnub nyoog-hardenable. Txhawm rau txhim kho lub zog tag nrho hauv K500 Weldment, ib qho kev kho cua sov tom qab Weld (PWHT) thiab yuav tsum ua tib zoo tswj kom tsis txhob muaj teeb meem zoo li kev tawg.
Cov Qauv Siv Cov Qauv & Cov Lus Qhia Kub: Siv cov roj qab (Argon) los tiv thaiv lub hauv paus sab ntawm oxidation. Tswj kev cuam tshuam tsawg zaus kub (feem ntau hauv qab 300 ° F / 150 ° F / 150 ° C) thiab siv cov kab sib tsoo dhau ntawm cov nyom ntawm alloy.
Machining: ob qho tib si alloys yog Gummy thiab tawv rau tshuab. Monel 400 yuav tsum ntse, zoo- sua teb Kteb cuab yeej thiab txiav hnyav kom txo qis zog ua haujlwm. Monel K500, nyob rau hauv lub hnub nyoog muaj zog, yog muaj zog heev thiab muaj abrasive, xav tau rigid teeb tsa thiab carbide tooling.
4. Yuav ua li cas kev ua yeeb yam ntawm Monel K500 cov yeeb nkab hloov pauv tom qab daus tawv, thiab dab tsi cuam tshuam rau nws siv?
Cov nag lossis daus ua rau lub zog hloov pauv Monel K500 los ntawm cov khoom siv kub me, ductile cov khoom siv rau hauv lub siab {1} Hloov alloy, ntau dua hloov kho nws txoj kev ua tau zoo.
Kev Ua Tau Hloov:
Lub zog: cov txiaj ntsig lub zog thiab tensile muaj zog tuaj yeem ze li ntawm nws cov kev daws teeb meem tau tshaj li 110 ksi (758 mpa).
Hardness: Lub hardness nce ntau ntxiv, muab kev tsis kam ua tau zoo los hnav, galling, thiab yaig.
Deventility: Muaj kev txo qis hauv duction thiab tej yam nyuaj piv piv rau lub xeev anealed, tab sis nws tseem nyob ntawm theem kev siv rau feem ntau cov ntawv thov engineering.
Kev siv rau kev siv:
Kev sib xyaw ua ke: kav dej ua los ntawm Monel K500 tsis yog rau cov kua xwb xwb; Lawv tuaj yeem ua ke raws li cov qauv lossis thauj khoom {- bearing cov txheej txheem. Ib qho piv txwv ua ntej yog tus kiv cua kiv cua sab nraud, qhov twg cov yeeb nkab yuav tsum tau xa cov khoom siab thiab cov hnav los ntawm bearings thiab ntsaws ruaj ruaj.
Ceecration yog qhov tseem ceeb: Txhua vuam, machining, thiab kev sib tsoo txias heevyuav tsumUa tiav ua ntej kev kho mob kawg. Sim weld lossis tsim cov khoom tom qab kev laus yog impractical thiab yuav yuav ua rau tawg lossis ua tsis tiav.
Cov lus qhia tsim: engineers tuaj yeem siv lub zog siab ntawm AGED K500 rau tus tsim Txawm li cas los xij, qhov no yuav tsum tau sib npaug ntawm cov muaj peev xwm muaj kev puas tsuaj rau sab nraud.
Tsis - cov cuab yeej sib nqus: xws li monel 400, K500 Seem tsis yog- sib nqus txawm tias tom qab kev laus. Qhov no yog cov cuab yeej tseem ceeb rau kev siv hauv kev sib nqus Revelance resoning (thiab kev paub txog kev yos hav zoov thiab cov khoom siv hluav taws xob uas muaj zog thiab xeb tsis kam.
5. Hauv cov roj thiab roj kev lag luam, dab tsi yog cov ntawv thov niche rau monel alello kav, tshwj xeeb hauv kev ua haujlwm hauv qab thiab ntau lawm?
Thaum tsis yog li ubiquitous li carbon steel lossis duplex stainless hlau, Monel alloys sau cov roj thiab cov roj uas tsis tau daws cov qauv tshwj xeeb, tsis muaj nqi siv.
Cov Khoom Siv Tsim thiab WellStreaments: hauv cov dej tsim cov roj (H₂s) thiab Chlorides, cov qauv tshuaj tuaj yeem raug kev txom nyem los ntawm Sulfide kev ntxhov siab tawg (SSC) thiab pitting. Monel K500 txoj kev sib xyaw ua ke ntawm lub zog siab (rooj sib tham nace mr0175 / iso 15156 Yuav tsum muaj rau cov kav dej tshwj xeeb, thiab siab} lub zog rasteners.
Yav dhau los systems: Qhov no yog thaj chaw thov loj.
Txhawm chim thiab tua kab: cov no yog qhov siab tseem ceeb - cov kab siab ntawm kev khib nyiab siv rau kev tswj kom zoo. Lawv feem ntau raug rau dej hiav txwv, brine, thiab av av. Monel 400 lossis K500 Liners lossis Cladding yog siv nyob rau hauv cov roj hlau ua kom zoo nkauj, kom muaj kev ntseeg tau yooj yim hauv cov kev nyab xeeb {6} tseem ceeb.
Ntsuas thiab hydraulic kab: me {- bore monel 400 kav siv rau kev txhaj tshuaj tshuaj chem, hydraulic fusing, thiab kab ntsuas. Lawv tiv thaiv corrosion los ntawm ob qho tshuaj lom (piv txwv li, methanol, corrosion inhibitors) thiab sab nraud dej hiav txwv ib puag ncig.
Dej Txias Tshuab Cua Txias Tshuab thiab FPSOS: Raws li Cov Thauj Khoom Siv, Cov Kav Monel yog siv rau cov pa hluav taws, thiab cov dej tseem ceeb heev. Lawv txoj kev tawm tsam mus rau biofouling thiab corrosion ua rau muaj kev pabcuam ntev thiab txo kev txij nkawm.
Meter thiab tswj cov tshuab: hauv cov ntawv thov yuav tsum tau xaiv cov ntoo uas muaj zog, xws li cov khoom siv sib xyaw ua ke uas tswj tau li qub thiab saib xyuas li qub.
Hauv cov ntsiab lus, nyob hauv tus nqi - nco ntsoov tab sis cov roj ntsha ua tau raws li lawv cov nqi roj av, tab sis roj kev puas tsuaj rau kev teeb meem thiab ua kom muaj kev nyab xeeb ua haujlwm.
