1. GH4033 thiab XH77T tau hais ua ke. Dab tsi yog kev sib txheeb ntawm ob txoj kev tsim no, thiab cov peev xwm siv tau cov khoom ntawm no alloy?
GH4033 thiab XH77T yog ob qho qauv sib txawv rau covMuaj tseeb tib npib tsib xee - based supalloy.
GH4033: Qhov no yog Suav teb cov qauv (GB). Qhov "GH - Prefix feem ntau sawv rau" Gao wen nws Jin, "uas txhais tau rau" siab- kub alloy. "
XH77t: Qhov no yog qhov tsim qauv los ntawm lub sijhawm qub qub (GOST) tus qauv, uas tau hais tawm dav hauv tebchaws Russia thiab sab hnub tuaj European.
Qhov no ob qho naming yog ib txwm muaj nyob rau hauv lub ntiaj teb Aerospace thiab lub zog txhawb kev lag luam, qhov twg cov kev qhia tshwj xeeb feem ntau taug txoj kev sib txawv ntawm cov qauv sib txawv. Cov peev txheej ntawm cov khoom ntawm GH4033 / XH77T yog dab tsi uas tau cais nws raws li kev ua ntej-} chromium supromium.
High - Qhov tseem ceeb yog nws lub peev xwm los khaws cov khoom siv kub siab (tensile thiab cig zog) ntawm 500℃rau 850 degree. Nov yog nws lub raison d'être.
Oxidation tsis kam: lub siab chromium (kwv yees li 19-22%) cov txheej txheej roj chromium (croo₃) ntawm qhov chaw thaum raug kub. Qhov "nplai" tiv thaiv cov hlau hauv qab ntawm cov hlau los ntawm kev oxidation ntxiv thiab corrosion.
MicroT yog ntxiv dag zog los ntawm kev tsim cov nplua, muaj kev sib tw ntawm GAMMA Prime (al, ti)) nyob rau hauv nws cov microstructure thaum lub sijhawm kho cua sov. Cov qauv no yuav tsum nyob ruaj khov thiab tsis yog coarsen ntau dhau thaum ntev- kev pab cuam los tiv thaiv kom tawg.
2. Vim li cas cov ntaub ntawv tshwj xeeb no tau muab rau hauv daim ntawv ntawm "Round Bar Rod," thiab nws txoj kev ua tiav rau cov khoom tseem ceeb li turbine hniav?
Lub "Round Bar Rod" Daim Ntawv yog ib semi-}} Cov khoom tiav uas ua tiav cov khoom lag luam tseem ceeb rau kev tsim khoom tseem ceeb thiab cov khoom sib txawv.
Kev tsim tau yooj yim: ib puag ncig bar yog qhov zoo tshaj plaws feuptock rau machining txheej txheem tom qab. Lub tshuab turbine yas, piv txwv li, feem ntau yog precision machined ntawm cnc (khoos phis tawj lej) milling los yog tig mus rau ntawm lub tshuab dhos los ntawm bar Tshuag. Lub tshuab ntsuas hluav taws xob thiab qhov ntev ntawm ib puag ncig bar ua rau nws yooj yim mus tuav, tuav, thiab muab tso rau hauv cov chaw siv tshuab tshuab.
Grainow Flow thiab kev ncaj ncees: kev ua qauv ntawm cov bar yog qhov tseem ceeb heev. Rau cov ntawv thov zoo li cov hnab xob ib txwm tuaj, qhov bar tsis yog cias thiab dov thiab dov; Nws yuav luag ib txwm forged.
Forging cuam tshuam rau deforming lub alloy nyob rau hauv kev kub siab ntawm kev kub siab. Cov txheej txheem no ua kom cov ntxhib, raws li {-} Creat Kev Tshuaj Sib Tham, thiab kev sib xyaw ua ke sab hauv voids. Qhov tseem ceeb tshaj plaws, nws tsim cov lus qhia "grain Flow" qauv uas ua raws cov contour ntawm ntu kawg. Nyob rau hauv ib lub turbine hniav, cov qauv sib dhos no ua kom zoo dua kev qaug zog thiab lub neej nkag los ntawm ib qho kev sib xyaw ntawm cov kab nrib.
Cov Khoom Siv Ib Zaug: Qhov Siab -}}}}}} paogeneous microstructure thoob plaws thoob plaws nws tus ntoo khaub lig {1}- seem. Qhov kev ua tau zoo no tsis yog - sib yeem ntawm cov neeg tsim qauv uas xav tau lav ua haujlwm nyob rau hauv kev ntxhov siab heev.
3. Cov npe teev Gh4033 / Xh77t kov yeej hauv daim ntawv thov no, thiab nws cov kev txwv tsis raug?
A: Turbine li hauv lub dav hlau cav muaj kev sib cav sib cav ntawm cov tshuab uas xav tau ntawm cov tshuab ua rau niaj hnub no. GHSH033 / XH77T yog engineered kom tau raws li cov kev cov nyom no:
Centrifugal thau khoom: Turbine Cov Hluav Taws Xob Tig ntawm qhov kub siab heev (feem ntau tshaj 10,000 ntau tshaj 10,000 rau kev ua kom rub tawm lawv. Lub alloy lub siab tawm los thiab tensile lub zog ntawm ntug dej kub tiv thaiv kev tiv thaiv thiab tawg.
Sau: nyob rau hauv kev sib xyaw ua ke ntawm kev ntxhov siab ntau ntxiv (feem ntau 650 {{} {{{{5 {5 {5 {5 {5 {5 {5 Ib tug hniav elongating vim yog nkag tuaj yeem tiv toj rau lub tiaj tiaj ruaj khov kho, ua rau kev puas tsuaj. Lub gamma-prime precipitates hauv GH4033 yog qhov ua tau zoo ntawm impeding qhov kev txav ntawm cov qauv sib dhos hauv cov qauv crystal, muab kev zam tshwj xeeb.
Thermal nkees: thaum txhua lub voj voog voj voog, lub cav pib, coj mus rau qhov kub thiab txias, thiab kaw. Qhov no ua rau rov ua dua cov khoom loj thiab kev cog lus, ua rau muaj kev qaug zog ua kom sov. Tus Alloy's zoo thermal stability stability thiab qaug zog pab tau nws tuaj yeem tiv taus cov voj voog no.
Kub corrosion: Cov Alloy cov ntsiab lus Chromium muab rau oxidation thiab sulfidation (ib hom kub corrosion los ntawm leej faj hauv roj).
Txwv tsis pub:
Thaum zoo heev, Gh4033 / XH77t yog suav tias yog thawj-} tiam nickel superalalloy. Nws cov kev txwv tau coj mus rau kev txhim kho cov alloys tshiab rau cov engines feem ntau:
Qhov kub, qhov siv kub siv kub yog ib ncig ntawm 850- 900 degree. Cov cuab yeej niaj hnub niaj hnub muaj qhov kub tshaj 1500 degree, uas yuav tsum muaj ib qho kev sib tw txias (ds) GH4033 tsis tuaj yeem sib tw ntawm cov tier no.
Qhov hnyav: nws yog denser dua ib co tshiab, nickel - based alloys ua kom zoo rau lub zog tshwj xeeb.
4. Yuav ua li cas tuaj yeem suav tau tib qho kev txiav txim siab rau ob qho tib si "Aerospace cav" ntu thiab "Nuclear Reactor siab cov hlab"? Tsis txhob siv cov ntawv thov no muaj ntau yam uas yuav tsum muaj cov kev yuav tsum tau sib txawv?
Qhov no yog ib lo lus nug zoo heev uas tau hais txog cov versatility ntawm high -} Kev Ua Nickel alloys. Thaum lub sij hawm ib puag ncig sib txawv, lawv faib ib qho, tsis xav tau: kev ntseeg siab heev dhau sijhawm ntxhov siab. Cov khoom muaj peev xwm tshwj xeeb tseem ua haujlwm yooj yim.
Aerospace Tshuab Hniav:
Qhov tseem ceeb: High - kub lub zog & creep tsis kam nyob rau hauv sai thermal mus thiab centrifugal load.
Ib puag ncig: kev kub siab, oxidizing huab cua, muaj kev ntxhov siab dua.
Nuclear reactor siab rau lub raj (internal):
Qhov tseem ceeb: High - kub lub zog & creamp tsis zoo nyob rau hauv - lub xeev cov kev mob, ua ke nrog kev zam corrosion tsis kam thiab hluav taws xob tsis kam.
Ib puag ncig: kev kub ntxhov (tab sis feem ntau qis dua ib lub turbine, piv txwv li, 250 {}} 350 qhov kev ntsuas dej), kev kub ntxhov, thiab khaus neuon hluav taws xob. Lub coolant (siab-huv dej los yog kua hlau) tuaj yeem yog corrosive.
GH4033 / XH77T cov cim haum rau ntawm nws lub hauv paus ruaj khov. Lub tsib xee - chromium matrix muab cov hluav taws xob tsis ruaj uas yog qee yam hluav taws xob {}} ua rau emgrittlement zoo dua li ntau cov hlau. Nws corrosion tsis kam yog ib lub cuab tam tseem ceeb nyob rau hauv reactor cov aqueous ib puag ncig. Rau lub nuclear daim ntawv thov, cov alloy yuav raug ntsuas kom nruj kev tswj hwm zoo dua, thiab kev sim (zoo li cov kev cuam tshuam charche kev sib tw nyob rau hauv hluav taws xob raug. Lub "Round Bar" Daim Ntawv hauv cov ntsiab lus no yuav siv rau bolts, fasteners, txhawb nqa pas nrig, lossis lwm cov khoom siv sab hauv hauv cov hlab reactor.
5. Dab tsi yog qhov tseem ceeb tswj hwm thiab daim ntawv pov thawj yuav tsum muaj rau ib puag ncig ntawm GH4033 / XH77T npaj rau qhov kev thov siab xws li?
Cov saw hlau rau cov khoom siv no yog tswj hwm "pyramid" ntawm kev tswj hwm zoo thiab ntawv pov thawj. Nws tsis yog khoom lag luam.
Cov Khoom Siv Ntawv Pov Thawj: Daim ntawv pov thawj xeem zeb (MTC) lossis daim ntawv pov thawj ntawm kev sib haum yog yuav tsum tau ua. Nov yog cov ntaub ntawv raug cai uas muab kev ntxhov siab los ntawm melt cua sov mus rau qhov kawg bar. Nws lees paub cov tshuaj lom neeg thiab tshuab hluav taws xob (piv txwv li lub zog, elongation muaj zog, xws li ams (Aerospe cov ntaub ntawv zoo li ASME Seem III.
Tshuaj lom neeg muaj feem: kev pom zoo ntawm txhua lub caij (NI, CR, C, Al, PB, BB, BB, BB, BI, BB, BI, BI, P, BI, BI, BI, BI, BI, BI, BI, BI, BI, BI, BI, BI, BI, BI, BI, KIN) yuav tsum nyob rau hauv qhov nqaim heev, teev ntau yam. Cov kab lus muaj peev xwm ua tau tsawg {2} khib}}}}}} Txom Nyem siab- lub zog thiab tsis ua haujlwm.
Microster Kev Tshuaj Ntsuam Xyuas: Cov qauv metallographic raug coj los ntawm qhov bar los kuaj rau:
Lis loj: Yuav tsum muaj cov ris tsho zoo nkauj thiab hauv ib qho kev tshwj xeeb.
Kev nyiam huv: Kev ywj pheej los ntawm tsis - nws yog xim hlau suav (piv txwv li, oxides) yog ntsuas ib tus qauv zoo li ASTM E45. Kev suav ntau dhau los ua cov kev ntxhov siab thiab kev pib ua haujlwm rau cov kab nrib pleb.
Precipition faib: Qhov loj thiab faib cov khoom muaj zog gramma - PRIME theem yuav tsum muaj tseeb.
Tsis - Kev Kuaj (NDT): Txhua qhov kev soj ntsuam 100% kuaj xyuas kom pom sab hauv thiab nto thiab nto.
Kev sim ultrasonic (UT): siv los tshawb xyuas cov flaws hauv sab hauv zoo li voids, tawg, lossis suav nrog.
Zas kev sim tshuaj ntsuam (PT) lossis EDDY tam sim no kev sim: Siv los tshawb xyuas nto {{0} breaking tsis xws luag.
Kev kho tshav kub kub tswj: Cov kab yuav tsum yog cua sov -}}}}}}} Kev kho mob ua raws li kev laus) hauv kev ua kom muaj zog ua raws li daim ntawv qhia meej. Cov tuav los ntawm tib lub cua sov kho ntau tau sim los xyuas cov khoom uas xav tau tau ua tiav.
Yog tsis muaj qhov no pab qhia tau zoo, cov ntaub ntawv tsis tuaj yeem ntseeg tau rau lub davhlau {{tseem ceeb lossis kev nyab xeeb} tseem ceeb nuclear.
