1. Dab tsi yog Nickel Alloy Kav, thiab dab tsi tseem ceeb tshaj plaws ua rau lawv tsis tseem ceeb hauv kev siv cov kev siv tau?
Nickel Alloy kav yog tubular khoom tsim los ntawm cov hlau uas cov nickel yog lwm cov ntsiab lus zoo li chromium, molybdenum, thiab cob kom ua tiav cov khoom tshwj xeeb. Lawv tsis yog ib yam khoom tab sis ib tsev neeg ntawm high- Cov ntaub ntawv ua tau zoo ib yam li cov qauv txheej txheem hlau lossis stainless hlau yuav sai sai.
Qhov tsis tseem ceeb ntawm Nickel Alloy Kav kav dej stems los ntawm kev sib xyaw ntawm cov khoom siv nyiaj hauv lub zog:
Tshwj tsis yog Corrosion Kuj: Qhov no yog lawv cov kev ua koob tsheej tshaj plaws. Nickel nws tus kheej yog cov tiv taus corrosion, thiab cov cuab yeej no yog txhim kho los ntawm cov ntsiab lus. Chromium muab kev tiv thaiv zoo heev rau oxidizing ib puag ncig (piv txwv li molybdenum thiab tungsten txhim kho kom txo ib puag ncig (xws li cov sulfuric thiab hydrochloric acids). Qhov no ua rau lawv zoo tagnrho rau kev siv cov txheej txheem corrosive hauv cov nroj tsuag tshuaj.
High - Lub zog kub thiab ruaj khov: Khaws cov khoom siv tsis zoo, khaws cia cov kev kub siab ntawm lawv cov khoom siv feem ntau yuav muag thiab nkag. Alloys Zoo li Alloy 625 thiab Alloy 718 tau siv hauv roj turbines thiab lub zog tiam thiab lub zog kub uas kub tau tshaj 1000℃(1800℃f).
Oxidation thiab carburization Kuj: Thaum cov kub, cov ntaub ntawv tuaj yeem ua rau los ntawm kev rov ua pa (scaling) lossis carbon. Nickel - chromium alloys ua ib txheej txheem tenacious, tiv thaiv txheej, uas ua raws li kev thaiv tawm tsam kev tawm tsam ntxiv. Qhov no yog qhov tseem ceeb hauv kev kho cua sov kho cua sov thiab ethylene tsoo cov cub tawg.
Tougness thiab Duav: txawm tias lawv lub zog siab, ntau npib siab, tso cai rau lawv tsim nyog, thiab welded rau hauv cov pa luam yeeb nyuaj uas tsis muaj kev tawg.
Hauv cov ntsiab lus, Nickel Alloy Kav yog qhov mus -
2. Yuav ua li cas qhov kev xaiv ntawm ib qeb tsib xee npe tag nrho (piv txwv li, alloy 600 vs. alloy 625) cuam tshuam nws cov kev ua tau zoo hauv ib puag ncig kev pabcuam tshwj xeeb?
Xaiv cov qib Nickel Alloy yog ib qho kev tshawb fawb meej meej, raws li txhua tus Alloy cov tshuaj lom neeg raug ua kom haum rau cov kev sib tw tshwj xeeb. Siv cov qhab nia tsis yog yuav ua rau kev puas tsuaj thiab tsis ua haujlwm sai. Kev ua yeeb yam sib txawv ntawm ob lub alloys, alloy 600 thiab alloy 625, zoo kawg nkaus piv txwv no.
Alloy 600 (Ni - b}}}}}}} 17%), thiab cov hlau (6} 10%). Nws yog koob meej rau nws cov kev tiv thaiv zoo rau cov high-kub oxidation thiab corrosion los ntawm caustic alkalis alkalis. Nws tseem muaj cov khoom siv zoo ntawm kev nce siab kub. Txawm li cas los xij, nws txoj kev tawm tsam rau pitting thiab crevice corrosion hauv chloride nyob ib puag ncig muaj txwv, thiab nws muaj kev tsis zoo rau cov sulfuric thiab hydrochloric acids.
Cov Kev Siv Cov Ntawv Raug: Cov cua sov ua kom huv, kub kho kom sov sai, thiab cov khoom siv tshuaj lom neeg fandling caustic daws.
Alloy 625 (Ni-Cr-Mo-Nb): While also a nickel-chromium alloy, the key differentiator for Alloy 625 is the significant addition of molybdenum (8-10%) and niobium (3.15-4.15%). Lub Molybdenum muab kev tsis kam tiv thaiv ntau yam ntawm cov corrosives loj, suav nrog pitting thiab crevice corrosion los ntawm chlorides. Niobium, ua ke nrog Molybdenum, ua raws li lub zog loj ua kom muaj zog, txhawb nqa kev ua kom muaj zog txog 1000 degree, yam tsis muaj kev xav nag lossis daus.
Cov ntawv thov raug: Offshore thiab marine Systems (fluewater cov tshuab desulfurizer, thiab siab}}}}} kub thiab roj dej.
Xaus: Kosing Alloy 600 rau qhov yuam kev dej hiav txwv yuav yog qhov tsis muaj kev nyuaj siab vim yog cov kab mob uas ua tau zoo thiab zoo rau kev hloov pauv ntawm Caustic hloov. Hloov siab, siv tus nqi kim dua alloy 625 hauv kev kub me, siab - kub oxidizing huab cua yuav dhau los- Engineering. Qhov kev xaiv yuav tsum yog ua raws li kev txheeb xyuas qhov tseeb ntawm qhov kub, siab, thiab hom tshuaj tshwj xeeb hauv cov txheej txheem.
3. Dab tsi yog qhov tseem ceeb tsim thiab covreation nyuaj cuam tshuam nrog npib tsib xee hluav taws alloy, tshwj xeeb yog kev kho cua sov?
Cov khoom siv heev uas ua rau Nickel alloys xav tau kuj nthuav tawm cov kev sib tw tseem ceeb thaum kev tsim khoom thiab kev tsim khoom. Lawv lub zog siab, ua haujlwm - qhov kev coj ua tsis zoo, thiab kev coj ua metallogical xav tau cov txheej txheem tshwj xeeb.
Raug (Yeeb Nkab Tsim): Nickel Alloys feem ntau extruded los yog pilgered (cilgered (colded rolled) los ntawm lub hollow fillet. Lawv lub zog siab ntawm qhov kub xav tau ntau cov khoom siv muaj zog tshaj rau cov hlau. Ib kauj ruam tseem ceeb yog kev daws analinging - begles quenching kom khaws ib homogeneous, corrosion {{{{{{} {tus neeg tiv taus qauv. Tswj cov txheej txheem no yog qhov tseem ceeb kom ua tiav cov khoom siv yam xav tau thiab corrosion tsis kam.
Vuam cov nyom: VUAM
Kub tawg: Thawj qhov kev txhawj xeeb yog qhov tsim ntawm micro - fissures nyob rau hauv weld hlau lossis cua sov} be} cuam tshuam cheeb tsam (Haz). Qhov no yog vim muaj kev sib cais ntawm qis {{3} yaj {{}}}} Tshaj cov sulfur thiab phosphorus rau cov ciaj ciam av.
Porosity: Nickel alloys tau tshwj xeeb tshwj xeeb yog qhov porosity los ntawm nitrogen, thiab tshwj xeeb tshaj plaws, thiab tshwj xeeb tshaj plaws. Qhov no yuav tsum siv lub siab -}} Argon) thiab qee zaum rov qab roj av los tiv thaiv lub hauv paus ntawm weld los ntawm cov pa hluav taws xob paug.
Weld Hlau Zog: txuam lub zog ntawm lub hauv paus hlau yuav nyuaj. Cov hlau ua tub rog feem ntau overalalloyed (piv txwv li, siv ib qho alloy 625) kom ntseeg tau tias lub weld tso nyiaj puas tau xeb txaus thiab muaj zog.
Cov kev coj ua zoo tshaj plaws: Txhawm rau txo cov teeb meem no, tswj cov kev sib xyaw ua ke ntawm txhua qhov kev sib tsoo, thiab cov qib vuam tshwj xeeb rau qib Nickel.
Kev kho cua sov: tshaj tawm {- Weld Kev Kho Mob Kub (Pwhat) yog tsis tas yuav tsum muaj Nickel alloys thiab tuaj yeem qee zaum muaj kev cuam tshuam. Txog kev daws - Annealed cov ntaub ntawv, a pwht tuaj yeem cuam tshuam daws cov corrosion tsis kam thiab lub zog los ntawm precipitating undesirable theem theem siab. It is only used for specific, precipitation-hardenable grades or to relieve stresses in very thick-walled sections, and it must be performed according to strict, alloy-specific guidelines.
4. Hauv cov roj & roj kev lag luam, tshwj xeeb rau cov ntawv thov downhole thiab yav dhau los, vim li cas thiaj li yog Alloy 725 thiab Alloy 925 Nyiam?
Cov roj & roj kev lag luam kev nrhiav cov peev txheej hauv kev ua kom muaj cov peev txheej, kub dua, thiab ntau cov khoom siv kom haum, thiab muaj peev xwm tiv tau cov ntaub ntawv uas tuaj yeem tiv taus "kev pab cuam" chaw ib puag ncig. Cov chaw ib puag ncig no yog cov cim los ntawm hydrogen sulfide (h₂s), carbon dioxide (co₂), colbon, colbon, colbon, colonures thiab kub. Cov qauv corrosion- tiv taus alloys feem ntau swb ntawm no, los nag {3} Thiab alloy 925 cov ntaub ntawv ntawm kev xaiv.
Qhov Sour Qhov Kev Pab Cuam: H ₂s, ua ke nrog dej thiab tshuaj chloride thiab cordoride, tuaj yeem ua rau ob hom ua tiav:
Sulfide kev ntxhov siab tawg (SSC): ib daim ntawv ntawm hydrogen embrittlement wydrittle, tsim los ntawm cov hlau corrosen, diffuses mus rau hauv cov hlau thiab ua rau muaj kev ntxhov siab hauv qab qhov kev ntxhov siab hauv lub zog.
Kev ntxhov siab corrosion cracking (SCC): kev tawg ua los ntawm kev ua ke ntawm lub taub hau kev ntxhov siab thiab kev ua kom muaj kev ntxhov siab.
Lub luag haujlwm ntawm PHICOY ALOYS: ALOYS 725 thiab 925 yog Nickel- molybdenum alloys ntxiv ntxiv dag zog los ntawm kev ntxiv ntawm titanium thiab txhuas. Lawv tau txais kev kho tshav ntuj sov ua kom zoo nkauj Qhov no muab:
Huab muaj zog: lawv muab cov txiaj ntsig zoo tshaj 120 ksi (825 MPa (uas yog tsim nyog rau lub siab tob thiab cov ntoo muaj peev xwm ntawm cov ntoo muaj nuj nqis.
Zoo tshaj SSC thiab Scc Refirectance: Qhov tshwj xeeb tshuaj lom neeg (qib siab ni)
Yaig thiab pitting resistance: lub zog siab thiab molybdenum cov ntsiab lus kuj tseem ua tau zoo tshaj plaws rau kev yaig thiab pitting corrosion los ntawm chloride los ntawm chlosides los ntawm chlosides los ntawm chlosides los ntawm chlosation.
These alloys are used for critical components such as downhole tubing and casing, subsea wellhead housings, high-pressure manifolds, and choke and kill lines, where failure is not an option due to the immense safety, environmental, and economic consequences.
5.
Thaum aerospace thiab roj & roj yog cov neeg siv khoom tshwj xeeb, cov khoom siv Nickel Alloy ua rau lawv muaj lwm txoj kev lag luam uas ua haujlwm ntawm qhov tseeb ntawm Chemistry thiab qhov kub thiab txias.
Tshuaj lom neeg thiab petrochemical ua: Qhov no yog sib cav txog cov neeg siv khoom loj tshaj plaws ntawm Nickel Alloy Kav Tom qab lub zog. Nroj tsuag tsim cov kua qaub acids, thiab cov chiv thiab chiv ua kom muaj xeb ntau ntau thiab catalysts.
Xav tau: tsis kam rau lub spectrum loj ntawm cov kua qaub (sulfuric, hydrochloric, phosphoric, thiab ntsev txog cov kev sib txawv thiab qhov kub thiab txias.
Alloys siv: alloy c {4 4}}}}}}}}}}}}}}}}}}}}}}}}
Lub zog tiam:
Lub zog nuclear: ob qho ntxiv pa thiab tom ntej no -}} tiam reacties siv nickel alloys.
Xav tau: Muaj lub zog muaj zog, tiv taus kev ntxhov siab corrosion tawg hauv high {{}} kev ruaj khov hauv qab Neutron hluav taws xob.
Alloys siv: alloy 600 thiab nws cov kev txhim kho version Alloy 690 yog siv rau chav generator tubes thiab reactor hlab ntsha div hauv hluav taws xob.
Advanced supercritical thee & biomass nroj tsuag: cov nroj tsuag no ua haujlwm ntau dua kub thiab kev ntsuas kom txhim kho kev ua tau zoo thiab txo cov emissions.
Xav tau: Creep lub zog thiab oxidation tiv taus ntawm qhov kub siab tshaj 700 degree.
Alloys siv: Alloy 617 thiab Alloy 740h yog cov ntaub ntawv tseem ceeb rau high- kub siv cov kav dej siab thiab hews.
Tubrog nkoj thiab ntug hiav txwv:
Xav tau: tsis kam rau pitting thiab crevice corrosion nyob rau hauv seawater, uas yog ib qho chaw tsis tshua muaj cua daj cua dub.
Alloys siv: Alloy 625 yog siv dav rau cov dej txias rau dej txias
Kws Tshuaj thiab Biotechnology:
Xav tau: Ultra -} kev ua kom siab thiab corrosion tsis kam tso cai rau kev ua kom tsis muaj menyuam yaus thiab kom tiv thaiv cov hlauic paug ntawm cov khoom. Cov kav dej feem ntau yuav tsum muaj lub siab-}} kev ncaj ncees, du sab hauv tas li.
Alloys siv: Alloy C-276 thiab Alloy 600 feem ntau siv rau cov khoom siv piping hauv cov kab, cov kab ntawv distillation, thiab cov khoom siv distillation.
Hauv txhua kis, Nickel Alloy kav yog xaiv tsis yog khoom kim heev, tab sis raws li qhov tseem ceeb engineering cov txheej txheem ncaj ncees, kev nyab xeeb, thiab kev ua haujlwm.
