1. GH2132 thiab a-286: Nkag siab txog kev sib raug zoo thiab cov yam ntxwv tseem ceeb
Dab tsi yog qhov kev sib raug zoo ntawm GH2132 thiab A-286, thiab dab tsi yog tus yam ntxwv ntawm no alloy?
GH2132 yog cov qauv kev tsim qauv Suav (hauv cov qauv zoo li GB / T 14992 thiab HB 5151) Rau cov hlau {} Raws sternational lub npe hu ua- 286. Qhov no yog ib qho nag ntsis - tawv} Harden Austenitic superalcoy zoo ib yam li stainless (FCC) muaj zog zoo ib yam li cov yas uas muaj zog los ntawm kev sib xyaw ua ke.
Qhov tseem ceeb tshaj plaws ntawm GH2132 / A- kub 286 yog nws txoj kev ua tau zoo thiab muaj txiaj ntsig zoo rau nickel {}}} raws li alloys. Nws qhov kev pabcuam kub tshaj plaws yog ib txwm nyob ib puag ncig 700℃(1292℃f). Thaum tsis yog muaj peev xwm ua nickel - Raws li qhov kub heev, nws muaj qhov kev siv ntau dua rau ntau yam kev siv hauv 500-700℃ntau yam.
Thawj lub peev xwm ntxiv dag zog yog Gamma Prime ('), nrog muaj pes tsawg leeg ntawm Ni₃ (TI, AL). Kev ceev faj sib npaug ntawm titanium thiab txhuas yog qhov tseem ceeb heev rau kev sib cais ntawm cov kev ua laus, uas thaiv kev laus ntawm kev siv cua sov kev ntxhov siab thiab muab siab} lub zog kub.
2. Cov metallurgy ntawm lub zog: kev kho cua sov thiab qhov tseem ceeb theem hauv GH2132
Cov txheej txheem kho cua sov tau qhib lub siab high - Cov txiaj ntsig ntawm lub ntsiab yog li cas?
Cov khoom ntawm GH2132 yog nyob ntawm ib qho kev kho mob ua kom sov tshwj xeeb tsim los rau cov preternith cov kev siv hluav taws xob hnyav ntxiv.
Cov qauv kev kho mob yog kev kho mob + Laus:
Kev Kho Mob Kev Kho Mob (980 - 1000 degree, ua raws li cov khoom txias (zoo li no, ALTOY} Kev ua kom sov sai (quenching hauv dej lossis roj) "ua kom zoo" lub xeev no, tsim txom cov kev tsim tawm los ntawm kev ua haujlwm lossis ua rau muaj kev mob muag muag, ua haujlwm.
Kev Kho Laus (720℃rau 16 teev, cua txias): Qhov no yog qhov tseem ceeb. Tuav lub alloy ntawm qhov kub nruab nrab no tso cai atoms rau diffuse thiab tsim cov nplua, thiab sib xyaw ntawm Gamma Prime (') ni₃ (ti, al) precipitates. Cov nanoscale hais yog qhov tseem ceeb ntawm lub zog, tsim lub zog tsis kam rau deformation nyob rau hauv lub zog ntawm kev kub.
Lwm theem tseem ceeb muaj xws li:
ETA (η) Theem (Ni₃ti): Qhov no yog ruaj khov, ntxhib, thiab tsis {{(} coherent theem. Yog tias kev laus kub dhau los yog lub sijhawm ntev dhau lossis ntev dhau lawm, theem tau txais txiaj ntsig tuaj yeem hloov mus rau hauv η theem, uas muab tsawg dua dag zog thiab tuaj yeem muab cov alloy. Qhov no yog qhov tseem ceeb txwv uas txhais tau qhov kev pabcuam kub sab sauv.
Carbides (piv txwv li, M₂₃c₆): Cov ntawv no tsuas yog pab cov Ciaj uas muag thiab tuaj yeem ua rau lub zog preep, tab sis yog tias lawv dhau mus ua kev tsim txom dhau los.
3. Kev tsim thiab machining: kev sib tw thiab kev sib tw zoo tshaj plaws rau GH2132
Cov txheej txheem sib tw tseem ceeb ntawm machinery thiab cov tuam txhab manufacturing los ntawm GH2132?
GH2132 qhia tawm ntau cov yam ntxwv nyuaj ntawm lwm cov superalloys, tab sis nws feem ntau suav tias yog cov tswj xyuas ntau dua GH4169.
Cov nyom:
Ua haujlwm tawv tawv: Austenitic matrix muaj tus nqi siab ntawm kev ua haujlwm hnyav. Yog tias cov cuab yeej rubs es tsis txhob txiav, nws sai sai rau saum npoo, ua rau lub cuab tam nrawm thiab muaj peev xwm ua tiav ntawm cov kis tom qab.
Siab txiav cov rog thiab cua sov: cov alloy tswj hwm nws lub zog ntawm qhov kub siab tsim ntawm cov lus txiav. Qhov no, ua ke nrog nws cov thermal tsawg thermal, concentrates cua sov ntawm cov cuab yeej, ua rau cov khoom siv yas, sib diffusion hnav, thiab kev ua neej.
Cov ntoo muaj abrasive: lub xub ntiag ntawm cov carbides tawv thiab muaj zog 'precipitates abrade ntug, ua rau muaj flank hnav.
Ua {- Up ntug (Bue): Ntawm qee cov khoom siv tuaj yeem tawm ntawm lub cuab tam uas thaum kawg nws tawg, koom nrog cov cuab yeej nrog nws.
Cov kev coj ua zoo tshaj plaws:
Cov kev xaiv cuab tam: Siv cov cuab yeej siv roj nrog cov rakes zoo. Carbide cov cuab yeej nrog cov txheej txheem ntau (tialn, alcrn) yog qauv. Rau xov, cubic boron nitride (CBN) tuaj yeem ua tau zoo.
Kev ua kom muaj zog: tswj txoj kev ua kom ntev, muaj qhov tob txaus thiab txaus ntshai ntawm kev txiav kom ntseeg tau tias qhov kev txiav ua haujlwm - Hardened txheej. Lub teeb txiav thiab chaw nyob yog detrimental.
Rigidity: The entire setup-machine, fixture, and tool-must be extremely rigid to dampen vibrations.
Coolant: Siv siab - cua txias, theej tawm txias kom tshem tawm cov cua sov thiab dej ntws kom zoo, tiv thaiv rov ua- txiav.
4. Cov ntawv thov muaj tseem ceeb: GH2132 feem ntau siv?
Nyob rau hauv uas tseem ceeb heev kev lag luam thiab cov Cheebtsam yog GH2132 Cov khoom ntawm kev xaiv?
GH2132 Qhov Zoo Tshaj Plaws Ntawm Cov Siab-} Kev ua tau zoo, thiab tus nqi ua rau nws zoo tshaj plaws rau cov ntawv thov uas xav tau, feem ntau hauv Aerospace thiab lub hwj chim siab.
Aerospace & Dav hlau tshuab:
Turbine yas thiab disks: rau tom qab theem ntawm compressors thiab turbines uas kub heev yog siab tab sis tsis pub tshaj 700 square.
Cov Cheebtsam tom qab: Qhov chaw xws li cas thiab cov nplhaib uas xav tau lub zog hauv qhov chaw kub, oxidizing ib puag ncig.
Fasteners: bolts, neeg rau, thiab screws siv nyob rau hauv high {}}} kub 14}} kub 286 vim nws cov khoom siv zoo rau kev ua kom muaj zog.
Lub zog tiam (roj turbines):
Zoo sib xws li nyob rau hauv aerospace, xws li tuaj yeem tuaj yeem, disks, thiab cov casings rau av -}} raws roj turbines.
Automotive (High - Kev ua si):
TurboTrger Cheebtsam: Cov tsev nyob ib ncig ntawm cov vaj tse thiab cov phuam uas tau raug rau kev tso pa hluav taws kub thiab huab cua sov thiab tig ceev.
Hauv tag nrho cov xwm txheej no, GH2132 yog xaiv los ntawm cov hlau tsis muaj zog thaum lub zog kub, thiab ntau dua li qhov kawg ntawm 700 degree, muab kev txuag nyiaj tshwj xeeb.
5. Corrosion Kuj thiab cov kev txwv tseem ceeb ntawm GH2132
GH2132 ua hauv cov pej xeem ib puag ncig, thiab nws cov kev txwv tseem ceeb yog li cas?
Nkag siab txog lub peev xwm ib puag ncig thiab thaj tsam ntawm GH2132 yog qhov tseem ceeb rau nws daim ntawv thov kev vam meej.
Corrosion Kuj Profile:
Oxidation tsis kam: cov ntsiab lus chromium (~ Qhov no muab kev tiv thaiv zoo heev rau kev ntsuas thiab oxidation nyob rau hauv huab cua lossis lwm yam oxidizing cua ntawm qhov kub txog li 815℃(1500℃f).
Aqueous Corrosion: It exhibits good general corrosion resistance, comparable to or better than that of 300-series stainless steels. Nws ua tau zoo nyob rau hauv ntau cov acidic me ntsis, alkaline, thiab ntsev-muaj ib puag ncig.
Txwv tsis pub dhau los:
Temperature Ceiling: The most significant limitation is the instability of its strengthening ' phase above ~700℃(1292℃F). Lub sijhawm ntev ua rau dhau los -}}} mus rau 'mus rau hauv cov ntxhib, nkig), ua rau muaj lub zog loj (ni₃ti), ua rau muaj lub zog loj heev thiab kev sib tw. Lub cap nyuaj no ua rau nws tsis zoo rau cov ntu kub tshaj plaws ntawm niaj hnub tawg.
Kev ntxhov siab corrosion cracking (SCC): Zoo li ntau Austenitic alloys, GH2132 tuaj yeem ua rau chloride kev nyuaj siab hauv cov chlorides hauv qab cov kev ntxhov siab hauv qab).
Tsis yog rau kev txo cov kua qaub: nws tsis muaj qhov zoo tsis kam rau txo cov kua qaub zoo li hydrochloric (HCl) lossis Sulfuric (H₂₂₄). Rau xws li ib puag ncig, nickel - chromium - molybdenum alloys (piv txwv li hastelloy) yuav tsum muaj.
Hauv cov ntsiab lus, GH2132 yog ib qho muaj zog, raug nqi}}}}}} cov kev mob loj thiab cov kev ua haujlwm tshwj xeeb.
