1. Q: Incoloy 907 (UNS N19907) yog dab tsi, thiab dab tsi ua rau nws tsim tshwj xeeb rau kev siv roj turbine foob?
A:Incoloy 907, npeUNS N19907, yog npib tsib xee-hlau-cobalt-raws li superalloy tshwj xeeb uas tsim los rau cov ntawv thov uas yuav tsum tau muaj kev tswj xyuas cov coefficient ntawm thermal expansion (CTE) ua ke nrog lub zog siab thiab oxidation tsis kam. Nws belongs rau ib tsev neeg tshwj xeeb ntawm cov alloys hu ua "tswj-expansion superalloys," tsim feem ntau rau cov roj turbine cav ntsaws ruaj ruaj thiab lwm yam khoom uas tswj kom nruj clearances thoob plaws qhov kub thiab txias yog qhov tseem ceeb.
Tshuaj muaj pes tsawg leeg:Cov yam ntxwv tshwj xeeb ntawm Incoloy 907 muab los ntawm nws cov khoom ua kom zoo sib xws:
Nickel (Ni):35.0% rau 40.0% - muab cov austenitic matrix thiab ua lub hauv paus rau cov khoom ruaj khov- kev daws teeb meem
Hlau (Fe):Qhov nyiaj tshuav - pab txhawb rau cov alloy tswj cov yam ntxwv nthuav dav
Cobalt (zeeg):12.0% mus rau 16.0% - txo cov coefficient ntawm thermal expansion thiab ua rau siab - kub zog
Niobium (Nb):4.0% mus rau 5.5% - cov ntaub ntawv ntxiv dag zog rau precipitates thiab cuam tshuam tus cwj pwm nthuav dav
Titanium (Ti):1.3% rau 1.8% - pab txhawb kom nag lossis daus
Silicon (Si):0.15% rau 0.60% - cuam tshuam oxidation tsis kam thiab nthuav cov yam ntxwv
Aluminium (Al):0.5% rau 1.2% - pab txhawb oxidation kuj thiab precipitate tsim
Cov pa roj carbon (C):0.06% siab tshaj - tswj kom muaj kev ruaj khov
Boron (B):0.012% qhov siab tshaj plaws - txhim kho grain ciam zog
Tus Tswj-Expansion Advantage:Tus yam ntxwv txhais ntawm Incoloy 907 yog nws qhov qis thiab qhov tseeb tswj coefficient ntawm thermal expansion. Cov cuab yeej no yog qhov tseem ceeb rau cov roj turbine seals vim:
Seal clearance tswj:Gas turbine xyaw ua haujlwm thoob plaws qhov kub thiab txias ntau yam -los ntawm ambient thaum pib mus txog 650 ° C (1200 ° F) lossis siab dua thaum lub zog puv. Cov ntsaws ruaj ruaj yuav tsum tswj kom nruj clearance los tiv thaiv roj to, uas txo efficiency. Cov khoom siv uas tsis tshua muaj kev nthuav dav tso cai rau cov engineers tsim cov kev khiav hauj lwm kom ze dua.
Thermal compatibility:Incoloy 907 yog tsim los kom phim cov yam ntxwv nthuav dav ntawm lub siab - lub zog superalloys siv nyob rau hauv turbine discs thiab casings, kom ntseeg tau tias cov ntsaws ruaj ruaj nyob rau hauv kev sib cuag nrog mating nto yam tsis muaj kev cuam tshuam ntau dhau los yog qhov sib txawv.
Tsawg hysteresis:Cov alloy nthuav tawm qhov hloov pauv me me thaum lub sij hawm thermal cycling, tswj kom zoo ib yam clearances dhau lub neej ntawm lub cav.
Strengthening Mechanism:Tsis zoo li ntau npib tsib xee-raws li superalloys uas vam khom hnyav rau gamma-prime (γ') nag lossis daus, Incoloy 907 muab nws lub zog los ntawm kev sib xyaw ua ke ntawm:
Khoom- daws teeb meem:Muab los ntawm cobalt, hlau, thiab npib tsib xee hauv austenitic matrix
Intermetallic nag lossis daus:Niobium thiab titanium daim ntawv ntxiv dag zog rau theem uas ua rau muaj kev kub siab -lub zog
Tswj grain qauv:Cov hlau feem ntau yog ua tiav kom ua tiav ib qho zoo ib yam, zoo -cov qauv zoo rau cov ntawv thov foob
Gas Turbine Seal Daim Ntawv Thov:Incoloy 907 yog siv rau:
Turbine tip seals:Cheebtsam uas tuav clearance ntawm turbine hniav tswv yim thiab cov nyob ib puag ncig casing
Interstage seals:Cov ntsaws ruaj ruaj ntawm cov theem turbine uas tiv thaiv cov pa pa tawm
Bearing compartment seals:High - kub seals tiv thaiv cov kabmob
Exhaust nozzle seals:Cheebtsam nyob rau hauv variable - cheeb tsam tso lub nozzles yuav tsum tau qhov seem stability
Static structural seals:Lub nplhaib foob thiab cov khoom sib khi hauv siab - qhov kub thiab txias
Sib piv nrog lwm cov ntaub ntawv foob:
| Khoom siv | CTE (× 10⁻⁶/°C) | Ua kom muaj zog | Max Temp | Daim ntawv thov foob |
|---|---|---|---|---|
| Incoloy 907 (N19907) | Tsawg (10-12) | Dej nag | 650 ° C | Siab -kub turbine seals |
| Incoloy 909 (N19909) | Tsawg heev (9-11) | Dej nag | 650 ° C | Precision clearance seals |
| Tom ntej: Inconel 718 (N07718) | Nruab nrab (13-15) | Dej nag | 650 ° C | General structural Cheebtsam |
| Stainless hlau 316 | Siab (16-18) | Khoom -kev daws teeb meem | 540 ° C | Tsawg- kub seals |
2. Q: Dab tsi yog kev tswj xyuas tshwj xeeb siv rau Incoloy 907 (UNS N19907) superalloy bar, thiab dab tsi yog qhov tseem ceeb ntawm kev siv roj turbine foob?
A:Incoloy 907 superalloy bar yog tswj hwm los ntawm cov khoom siv tshwj xeeb aerospace tshwj xeeb uas tsim cov kev cai nruj tsim nyog rau kev siv roj turbine foob. Kev nkag siab txog cov kev qhia tshwj xeeb no yog qhov tseem ceeb rau kev yuav khoom thiab kev lees paub zoo.
Primary Material Specifications:
TSI 5900:Qhov no yog thawj Aerospace Material Specification npog Incoloy 907 (UNS N19907) hauv daim ntawv tuav, forgings, thiab rings. Nws tsim:
Tshuaj muaj pes tsawg leeg:Kev txheeb xyuas ntawm UNS N19907 txwv
Mechanical zog:Tensile zog, yield zog, thiab elongation
Coefficient ntawm thermal expansion (CTE):Cov ntsiab lus tseem ceeb rau kev siv foob
Kev kho cua sov:Kev daws annealing thiab nag lossis daus hardening xav tau
Kev kuaj tsis raug:Ultrasonic kuaj rau kev ncaj ncees sab hauv
TIAB SA 5901:Qhov kev qhia tshwj xeeb no suav nrog Incoloy 909 (UNS N19909), muaj feem cuam tshuam txog kev tswj hwm -expansion superalloy nrog qis dua CTE. Rau Incoloy 907, AMS 5900 yog tus qauv siv tau.
Chemical Composition Requirements rau AMS 5900:
| Element | Kev sib xyaw ua ke |
|---|---|
| Nickel (Ni) | 35.0% - 40.0% |
| Hlau (Fe) | Tshuav |
| Cobalt (zeeg) | 12.0% - 16.0% |
| Niobium (Nb) | 4.0% - 5.5% |
| Titanium (Ti) | 1.3% - 1.8% |
| Silicon (Si) | 0.15% - 0.60% |
| Aluminium (Al) | 0.5% - 1.2% |
| Cov pa roj carbon (C) | 0.06% max |
| Boron (B) | 0.012% max |
Mechanical Property Requirements:
| Khoom | Kev xav tau |
|---|---|
| Tensile zog | 180 ksi (1240 MPa) min |
| Yield zog (0.2% offset) | 130 ksi (896 MPa) min |
| Elongation | 8% min |
| Kev txo qis ntawm cheeb tsam | 12% min |
Coefficient of Thermal Expansion (CTE) Requirements:Qhov no yog cov cuab yeej tseem ceeb tshaj plaws rau daim ntawv thov foob. AMS 5900 qhia:
Kev ntsuas CTE:Feem ntau ntsuas ntawm 20 ° C txog 400 ° C (68 ° F txog 752 ° F)
Txais tau ntau yam:Lub alloy yuav tsum ua kom pom qhov qis thiab tswj kev nthuav dav uas txhais tau tias nws tsim nyog rau daim ntawv thov foob
Kev txheeb xyuas:Kev kuaj CTE yog ua los ntawm cov qauv neeg sawv cev kom paub meej tias kev ua raws cai
Kev kho cua sov yuav tsum muaj:Incoloy 907 yog nkag rau hauv nag lossis daus- mob hnyav:
Kev daws annealing:Feem ntau ua ntawm 980 ° C txog 1040 ° C (1800 ° F txog 1900 ° F)
Kev laus:Ob -kev laus kev kho mob los tsim cov khoom siv kho tshuab:
Thawj aging:720 ° C rau 760 ° C (1325 ° F txog 1400 ° F) rau 8 mus rau 12 teev
Kev laus thib ob:620 ° C txog 650 ° C (1150 ° F txog 1200 ° F) rau 8 mus rau 12 teev
Cua txias:Tswj cua txias ntawm cov kauj ruam kev laus kom ua tiav qhov kev xav tau precipitate faib
Nondestructive Examination Requirements:Rau daim ntawv thov tseem ceeb seal:
Kev kuaj ultrasonic (UT):Tag nrho -ntev kev soj ntsuam ntawm bar Tshuag txhawm rau txheeb xyuas qhov tsis xws luag
Kev kuaj kua dej (PT):Kev kuaj saum npoo rau cov kab nrib pleb thiab saum npoo - tawg tsis xws luag
Eddy tam sim no xeem (ET):Rau me me txoj kab uas hla, nto defect nrhiav kom tau
Cov ntaub ntawv pov thawj zoo:Txhua qhov khoom xa tuaj yuav tsum suav nrog:
Mill Test Report (MTRs):Daim ntawv pov thawj tshuaj muaj pes tsawg leeg, txhua yam khoom, CTE, thiab kev kho cua sov
Thaum tshav kub kub naj npawb traceability:Kos rau ntawm txhua qhov bar kom tag nrho traceability
Certification ntawm conformance:Nqe lus hais tias cov khoom ua tau raws li AMS 5900 cov cai
3. Q: Dab tsi yog qhov tseem ceeb ntawm fabrication thiab machining kev txiav txim siab rau Incoloy 907 superalloy bar siv nyob rau hauv roj turbine seals?
A:Kev tsim thiab machining ntawm Incoloy 907 superalloy bar yuav tsum muaj cov txheej txheem tshwj xeeb uas cuam tshuam txog cov yam ntxwv ntawm cov hlau tshwj xeeb, suav nrog nws cov nag lossis daus - mob hnyav, tswj kev nthuav dav, thiab ua haujlwm - tus cwj pwm tawv. Kev coj ua kom raug tsim nyog yog qhov tseem ceeb los tswj qhov kev ruaj ntseg ntawm qhov ntev thiab kev ua haujlwm zoo uas yuav tsum tau muaj rau kev siv roj turbine foob.
Kev txiav txim siab Machining:Incoloy 907 yog ib yam khoom nyuaj rau lub tshuab vim nws lub zog siab, ua haujlwm -txoj kev xav tau, thiab muaj qhov muaj zog ntawm precipitates:
Tooling xaiv:
Carbide Tooling:Qib C-2 lossis C-3 carbide inserts raug pom zoo rau kev tsim khoom
Ceramic Tooling:Tej zaum yuav raug siv rau kev ua haujlwm siab - nrawm nrawm
Ntse txiav ntug:Cov cuab yeej yuav tsum ceev ceev; dull cov cuab yeej ua rau kev ua hauj lwm hardening thiab cua sov tsim
Txiav Parameters:
Nto ceev:Rau carbide tooling, 80 mus rau 120 nto taw ib feeb (SFM) rau roughing; 120 txog 150 SFM rau kev ua tiav
Pub tus nqi:Aggressive feeds (0.005 mus rau 0.010 nti ib kiv puag ncig) los txiav hauv qab ntawm kev ua hauj lwm - hardened txheej
Qhov tob ntawm kev txiav:Qhov tob txaus kom tsis txhob txhuam; Lub teeb txiav nrog qeeb qeeb yuav tsum zam
Coolant:Flood coolant tseem ceeb rau cua sov dissipation; dej- cov dej ua kua dej tau pom zoo
Ua hauj lwm hardening:Incoloy 907 ua hauj lwm hardens sai heev thaum machining. Cov kev coj ua hauv qab no pab txo qis kev ua haujlwm nyuaj:
Txhim kho cov cuab yeej ua haujlwm tas li
Tsis txhob cia cov cuab yeej nyob hauv qhov txiav
Siv cov kaum sab xis zoo ntawm cov cuab yeej txiav
Rau kev cuam tshuam kev txiav, txo qhov nrawm thiab nce ntxiv
Nto tiav:Rau cov ntawv foob, qhov chaw tiav yog qhov tseem ceeb. Cov ntawv xeem kawg yuav tsum siv:
Ntsej muag, zoo -cov cuab yeej tu
Txo nrawm nrog cov khoom noj txaus
Kev tsim nyog coolant xa
Forging thiab Bending:Incoloy 907 feem ntau yog siv rau hauv nag lossis daus- mob hnyav thiab tsis yog feem ntau txias tsim. Rau daim ntawv thov foob, feem ntau cov khoom yog machined los ntawm bar Tshuag:
Kub sib sau:Yog tias tsim nyog, nws yuav tsum tau ua hauv kev daws teeb meem -annealed mob
Ua hauj lwm hardening:Lub alloy ua hauj lwm hardens sai heev; intermediate annealing tej zaum yuav xav tau rau qhov tseem ceeb deformation
Welding Considerations:Incoloy 907 muaj tsawg weldability piv rau lwm cov nickel alloys:
rhiab heev:Lub alloy yog rhiab heev rau kub tawg thiab vuam -txog teeb meem
Daim ntawv thov:Vuam ntawm Incoloy 907 feem ntau zam rau cov khoom foob tseem ceeb
Yog xav tau welding:
Match filler hlau muaj pes tsawg leeg kom ze li sai tau
Siv Gas Tungsten Arc Vuam (GTAW/TIG) nrog kev tswj cov cua sov
Tom qab-weld kev kho cua sov feem ntau yuav tsum tau los kho cov khoom
Kev tsim nyog txheej txheem vuam yog qhov tseem ceeb
Thaum tshav kub kub kho tom qab Fabrication:Yog tias qhov tseem ceeb machining lossis fabrication tau ua tiav, kev kho cua sov yuav tsum tau:
Kev ntxhov siab:Rau cov khoom siv tshuab, kev ntxhov siab ntawm 540 ° C txog 620 ° C (1000 ° F txog 1150 ° F) tuaj yeem ua
Kev kho cua sov tag nrho:Yog xav tau kev daws annealing, tag nrho lub voj voog ntawm kev daws annealing thiab kev laus yuav tsum tau rov ua dua
Dimensional teebmeem:Kev kho cua sov tuaj yeem ua rau muaj qhov hloov pauv; nyiaj pab yuav tsum tau ua nyob rau hauv machining
Kev Tiv Thaiv Kab Mob:Incoloy 907 yog rhiab heev rau kev sib kis:
Sulfur:Yuav ua rau embrittlement; zam sulfur-raws li lubricants thiab cov ntaub ntawv cim
Tooj, zinc, txhuas:Tsawg- melting- taw tes hlau tuaj yeem ua rau cov kua hlau embrittlement
Hlau:Hla -kev sib kis los ntawm cov cuab yeej carbon steel tuaj yeem tsim qhov tsis xws luag
Kev Tswjhwm Zoo Thaum Fabrication:
Dimensional soj ntsuam:Cov khoom sib khi yuav tsum tau nruj nruj; Kev txheeb xyuas qhov ntev tas mus li yog qhov tseem ceeb
Surface tiav pov thawj:Cov ntsaws ruaj ruaj yuav tsum tau ua kom tiav qhov chaw kom ua haujlwm zoo
Kev kuaj Hardness:Tej zaum yuav raug siv los xyuas kom meej tias machining tsis tau hloov cov khoom nto
4. Q: Dab tsi yog lub luag haujlwm tseem ceeb ntawm coefficient ntawm thermal expansion (CTE) hauv cov roj turbine foob kev ua tau zoo, thiab Incoloy 907 daws qhov yuav tsum tau ua li cas?
A:Lub coefficient ntawm thermal expansion (CTE) yog arguably cov cuab yeej tseem ceeb tshaj plaws rau cov khoom siv roj turbine foob. Incoloy 907 tau tsim tshwj xeeb los muab qhov qis thiab raug tswj hwm CTE uas ua kom pom kev ua haujlwm zoo nyob rau hauv qhov kub thiab txias ntau yam tau ntsib hauv cov roj turbine xyaw.
Vim li cas CTE Matters hauv Gas Turbine Seals:Gas turbine cav muaj qhov kub thiab txias variations:
Pib:ambient kub (kwv yees 20 ° C / 68 ° F)
Idle:Nruab nrab kub (100 ° C txog 300 ° C / 212 ° F txog 572 ° F)
Tshem tawm thiab muaj zog tag nrho:Kev kub siab (500 ° C txog 650 ° C / 932 ° F txog 1200 ° F)
Thermal cycling:Cov cav tau rov ua cua sov thiab cua txias dua thoob plaws hauv lawv lub neej ua haujlwm
Thaum lub sij hawm no kub hloov, tag nrho cov cav tov nthuav thiab cog lus. Cov ntsaws ruaj ruaj yuav tsum tswj kom muaj kev sib haum xeeb rau:
Tiv thaiv kom tsis txhob muaj pa pa paug:Kev tshem tawm ntau dhau tso cai rau siab -kub combustion gases kom hla cov theem turbine, txo lub cav efficiency thiab nce roj noj
Tsis txhob cuam tshuam:Kev tshem tawm tsis txaus ua rau muaj kev sib cuag ntawm cov khoom sib hloov thiab cov khoom nyob ruaj ruaj, ua rau hnav, kev co, thiab muaj peev xwm ua rau lub cav puas
Tswj kev ua haujlwm:Kev sib foob sib cais kom ntseeg tau tias lub cav ua haujlwm tau zoo thoob plaws txhua qhov kev ua haujlwm
CTE Challenge:Cov ntaub ntawv sib txawv nthuav dav ntawm tus nqi sib txawv:
Nickel{0}}raws li superalloys (turbine discs, casings):CTE kwv yees li 13 txog 15 × 10⁻⁶ / ° C
Austenitic stainless hlau:CTE kwv yees li 16 txog 18 × 10⁻⁶ / ° C
Cov pa roj carbon steel:CTE kwv yees li 11 txog 13 × 10⁻⁶ / ° C
Yog tias cov ntaub ntawv foob muaj CTE txawv ntawm cov khoom uas lawv cuam tshuam nrog, kev tshem tawm yuav txawv nrog qhov kub thiab txias. Qhov kev hloov pauv no ua rau cov kws tsim qauv tsim cov kev tshem tawm loj dua kom haum rau qhov phem tshaj plaws - cov xwm txheej, kev ua haujlwm zoo.
Incoloy 907's CTE yam ntxwv:Incoloy 907 tau tsim kho los muab CTE uas zoo sib xws cov npib tsib xee-raws li superalloys siv nyob rau hauv turbine discs thiab casings:
CTE ntawm Incoloy 907:Kwv yees li ntawm 10 txog 12 × 10⁻⁶ / ° C tshaj li ntawm 20 ° C txog 600 ° C
Compatibility:Qhov CTE no tau zoo-ua tau zoo rau cov turbine disc alloys, ua kom nruj dua tsim tshem tawm
Kev ruaj ntseg:CTE tseem nyob ruaj khov nyob rau lub neej ua haujlwm ntev, ua kom muaj kev ua haujlwm zoo ib yam
Sib piv ntawm CTE Tus Nqi:
| Khoom siv | CTE (× 10⁻⁶ / ° C) ntawm 20-600 ° C | Foob Suitability |
|---|---|---|
| Incoloy 907 (N19907) | 10-12 | Zoo heev - phim turbine alloys |
| Incoloy 909 (N19909) | 9-11 | Zoo heev - txawm qis CTE |
| Tom ntej: Inconel 718 (N07718) | 13-15 | Nruab nrab - siab dua CTE |
| Stainless hlau 316 | 16-18 | Tsis zoo - mismatched nrog turbine alloys |
| Waspaloy | 13-15 | Nruab nrab |
Kev lees paub ntawm CTE:Rau daim ntawv thov foob tseem ceeb, CTE pov thawj yog qhov tseem ceeb:
Kev kuaj:CTE yog ntsuas siv dilatometry dhau qhov ntsuas kub uas cuam tshuam
Ntawv pov thawj:AMS 5900 yuav tsum tau kuaj CTE thiab tshaj tawm
Kev lees txais cov qauv:Cov ntaub ntawv yuav tsum ua kom tau raws li CTE txwv rau daim ntawv thov
Kev Tsim Nyog:Qhov qis thiab tswj CTE ntawm Incoloy 907 enables:
Tighter kev khiav hauj lwm clearances:Txhim kho cav efficiency thiab txo cov roj noj
Txo kev hnav khaub ncaws:Tsawg kev sib cuag ntawm rotating thiab cov khoom nyob ruaj ruaj
Predictable kev ua tau zoo:Kev coj cwj pwm tsis sib xws ntawm lub tshuab ua haujlwm ntawm lub hnab ntawv
Extended foob lub neej:Txo thermal cycling kev nyuaj siab ntawm cov khoom foob
5. Q: Dab tsi yog qhov kev lees paub zoo thiab kev xav txog kev yuav khoom yog qhov tseem ceeb thaum nrhiav Incoloy 907 superalloy bar rau roj turbine foob?
A:Kev yuav khoom ntawm Incoloy 907 superalloy bar rau roj turbine foob daim ntawv thov yuav tsum tau ua tib zoo saib xyuas kom zoo, kev soj ntsuam cov txheej txheem, thiab cov saw saw kev ntseeg tau. Qhov tseem ceeb ntawm cov khoom foob- qhov uas tsis ua haujlwm tuaj yeem ua rau muaj kev cuam tshuam loj, kev puas tsuaj ntawm lub cav, lossis qhov xwm txheej nyab xeeb- thov kom cov khoom zoo tsis txhob raug cuam tshuam.
Material Certification thiab Traceability:Lub hauv paus ntawm kev ruaj ntseg zoo yog cov ntaub ntawv dav dav:
Mill Test Report (MTRs):Txhua qhov khoom xa tuaj yuav tsum suav nrog MTRs cov ntaub ntawv:
Kub naj npawb:Tag nrho traceability rau qhov qub yaj
Tshuaj ntsuam xyuas:Kev pov thawj ntawm UNS N19907 muaj pes tsawg leeg, tshwj xeeb yog npib tsib xee (35-40%), cobalt (12-16%), niobium (4.0-5.5%), thiab titanium (1.3-1.8%)
Mechanical zog:Lub zog tensile (180 ksi min), yield zog (130 ksi min), elongation (8% min)
Cov ntaub ntawv CTE:Coefficient ntawm thermal expansion ntsuas tshaj qhov ntsuas qhov ntsuas kub
Cov ntaub ntawv kho cua sov:Kev daws teeb meem annealing thiab aging cycles, nrog rau lub sij hawm -kub kab kos
Kev txiav txim siab loj:Kev txheeb xyuas qhov sib xws, nplua -cov qauv zoo
Khoom cim:Txhua bar yuav tsum tau cim nrog:
Tus neeg tsim khoom lub npe lossis lub cim lag luam
Tus lej tshwj xeeb (AMS 5900)
Alloy npe (UNS N19907 lossis Incoloy 907)
Kub naj npawb
Txoj kab uas hla thiab qhov ntev
Nondestructive Examination (NDE):Rau cov ntawv thov foob tseem ceeb, NDE nruj yog qhov tseem ceeb:
Kev kuaj ultrasonic (UT):Tag nrho -ntev ntim tshuaj ntsuam xyuas kom paub qhov tsis xws luag xws li suav nrog, voids, lossis tawg
Eddy tam sim no xeem (ET):Rau cov kab me me, nrhiav kom pom ntawm qhov chaw thiab nyob ze - deg defects
Kev kuaj kua dej (PT):Kev ntsuam xyuas saum npoo rau cov kab nrib pleb, laps, thiab lwm yam saum npoo - rhuav tshem
Kev ntsuas hluav taws xob (RT):Tej zaum yuav raug teev rau cov khoom tseem ceeb
Dimensional Verification:Seal Cheebtsam yuav tsum nruj dimensional tolerances:
| Parameter | Yam yuav tsum tau muaj |
|---|---|
| Txoj kab uas hla | ± 0.005 nyob rau hauv los yog nruj dua rau precision tuav |
| Kev ncaj | Qhov siab tshaj qhov sib txawv ntawm ib chav tsev ntev |
| Nto tiav | Tshwj xeeb rau machined los yog hauv av nto |
| Ntev | ± 0.125 nyob rau hauv rau txiav lengths |
Kev kuaj tshwj xeeb rau daim ntawv thov foob:
CTE pov thawj:Paub meej tias cov coefficient ntawm thermal expansion ua tau raws li cov kev txwv tshwj xeeb rau qhov ntsuas kub uas xav tau
Kev kuaj Hardness:Rau kev ua raws li NACE lossis kev tswj xyuas zoo
Kev ntsuam xyuas microstructural:Kev txheeb xyuas cov qauv zoo li qub thiab tsis muaj cov theem tsis zoo
Tensile kuaj ntawm qhov kub siab:Rau cov khoom siv ua haujlwm ntawm qhov kub thiab txias
Supplier Qualification:Rau kev siv roj turbine, cov neeg muag khoom yuav tsum ua kom pom:
AS9100 ntawv pov thawj:Aerospace zoo tswj system tus qauv
Mill kev pom zoo:Lub zeb yuav tsum tau pom zoo los ntawm cov tuam txhab loj cav (OEMs)
Kev kuaj kuaj kuaj pom zoo:Kev ntsuam xyuas ywj pheej yuav tsum tau ua los ntawm cov chaw soj ntsuam tau lees paub (xws li ISO 17025)
Traceability systems:Pom muaj peev xwm tswj tau tag nrho traceability los ntawm yaj mus rau cov khoom tiav
Tau Txais Daim Ntawv Tshawb Fawb:
Txheeb xyuas cov cim sib phim kev yuav khoom (suab tooj cua sov, alloy, specification)
Tshawb xyuas MTRs kom tiav thiab ua raws li AMS 5900
Paub meej tias CTE cov ntaub ntawv tau muab thiab ua tau raws li qhov yuav tsum tau ua
Ua Kev Ntsuas Cov Khoom Siv Zoo (PMI) txhawm rau txheeb xyuas cov khoom sib xyaw ua ke
Tshawb xyuas qhov xwm txheej ntawm qhov tsis xws luag
Txheeb xyuas qhov ntev (inch, ntev, ncaj)
Rau cov ntawv thov tseem ceeb, xa cov qauv rau kev kuaj kev kuaj mob
Cia thiab tuav:
Ib puag ncig huv:Khaws cia kom deb ntawm cov pa roj carbon steel kom tsis txhob muaj hlau paug
Kev tiv thaiv ntim:Khaws cov ntim khoom qub kom txog thaum tsim khoom
Traceability khaws cia:Xyuas kom cov cim tseem pom tau
Kev tiv thaiv dej noo:Tsis txhob raug cov dej noo uas tuaj yeem ua rau qhov chaw corrosion
Common Procurement Specifications:
| Daim ntawv thov | Pom zoo Specification |
|---|---|
| Gas turbine foob | AMS 5900, UNS N19907 |
| Precision machined seals | AMS 5900 nrog nruj me ntsis kam rau ua |
| Forged foob rings | AMS 5900, forged khoom |
| Kev tshawb fawb thiab kev loj hlob | AMS 5900 lossis kev cai tshwj xeeb |
Risk Mitigation for Critical Applications:
Thib peb-kev soj ntsuam tog:Independent pov thawj ntawm cov khoom zoo
Kev sim ua pov thawj:Cov neeg yuav khoom muaj nyob rau hauv kev sim tshuab lossis ntsuas CTE
Cov npe uas tsim nyog:Txwv kev yuav khoom rau ua ntej - cov neeg muab khoom tsim nyog
Ntau traceability:Xyuas kom cov khoom los ntawm cov cua kub sib txawv tsis sib xyaw
Hloov tswj:Txhua qhov kev hloov pauv hauv qhov chaw tsim khoom yuav tsum tau rov- kev tsim nyog
Daim ntawv thov -Kev txiav txim siab tshwj xeeb:
Ntsiab seals:CTE pov thawj tseem ceeb; nto tiav qhov yuav tsum tau teev tseg
Interstage seals:Siab -kub tensile zog tej zaum yuav xav tau
Bearing compartment seals:Compatibility nrog lubricating roj yuav tsum tau xyuas
Exhaust nozzle seals:Cyclic oxidation kuj yuav raug kuaj
Los ntawm kev ua raws li kev lees paub zoo thiab kev coj ua, cov chaw tsim khoom siv roj av thiab MRO cov chaw tuaj yeem ua kom ntseeg tau tias Incoloy 907 superalloy bar ua tau raws li cov kev cai nruj ntawm daim ntawv thov foob, muab cov kev tswj xyuas thermal expansion, siab - kub lub zog, thiab kev ntseeg siab tseem ceeb rau kev ua haujlwm zoo thiab kev nyab xeeb ntawm lub cav.
