qhov twg yog titanium siv nyob rau hauv aircraft
Daim ntawv thov ntawmAMS 6931 Titanium ForgingHauv kev lag luam aviation tau muab faib ua aircraft qauv titanium alloy thiab cav qauv titanium alloy. Hauv aerospace, titanium alloys feem ntau yog siv los ua cov qauv thiab ntim rau foob pob hluav taws, missiles thiab spacecraft. Titanium alloys rau cov qauv dav hlau feem ntau yuav tsum tau siv rau qhov kub thiab txias hauv qab 350 degree, thiab yuav tsum muaj lub zog tshwj xeeb, zoo toughness, zoo heev qaug zog tiv thaiv, thiab vuam txheej txheem kev ua tau zoo. Titanium alloys rau lub cav yuav tsum muaj lub zog tshwj xeeb, zoo thermal stability, oxidation kuj, creep kuj thiab lwm yam khoom. Ntxiv rau qhov yuav tsum tau ua haujlwm ntawm aerospace titanium alloys, aerospace tsheb kuj xav tau kev kub siab tiv thaiv thiab hluav taws xob tiv thaiv.
Lub ntsiab daim ntawv thov ntawm aircraft titanium alloy structural qhov chaw yog tsaws iav qhov chaw, thav ntawv, kab teeb, fuselage tawv, tshav kub shields, thiab lwm yam. Russia's Il {{{0}} aircraft siv high-strength BT22 titanium alloy los tsim cov khoom tseem ceeb. xws li landing gears thiab bearing beams. Cov khoom siv ntawm cov kab sib kis ntawm Boeing 747 lub ntsiab tsaws iav yog Ti-6Al-4V. Lub forging yog 6.20 meters ntev, 0.95 meters dav thiab muaj ib tug hnyav ntawm 1545 kilograms. Lub zog muaj zog thiab siab tawv Ti-62222S titanium alloy yog siv rau hauv qhov tseem ceeb ntawm kab rov tav stabilizer ncej ntawm C-17 dav hlau. Lub fuselage cheeb tsam tom qab qhov chaw F-22 dav hlau cav nyob thiab tus Tsov tus tw tshav kub tiv thaiv yog tsim los ua nyias-walled titanium alloy qauv nrog zoo kub kuj.
Nyob rau hauv cov nqe lus ntawm aero-engines, daim ntawv thov teb ntawm titanium alloy cov ntaub ntawv muaj xws li compressor discs, hniav, nruas, high-pressure compressor rotors, compressor casings, thiab lwm yam. Hais txog 30% ntawm cov qauv luj ntawm niaj hnub turbine engine yog ua los ntawm titanium alloys. Daim ntawv thov ntawm titanium alloys txo qhov zoo ntawm compressor hniav thiab kiv cua hniav, thaum txuas lub neej ntawm cov khoom thiab tshuaj xyuas lub sijhawm. Lub taub hau thiab taub hau ntawm Boeing 747-8GENX lub cav kiv cua yog nruab nrog titanium alloy tiv thaiv lub tes tsho, uas tsuas yog hloov tau peb zaug thaum lub sijhawm ua haujlwm 10- xyoo.
Aviation titanium alloy forgings yuav tsum tau mus los ntawm ingot casting, billet ua, tuag forging, machining thiab lwm yam txheej txheem kom tau cov khoom tsim nyog thiab cov khoom, thiab feem ntau yog siv los tsim aircraft skeleton lub ntsiab bearing Cheebtsam thiab cav rotors. Raws li HB5024-1989, sab nraud txoj kab uas hla ntawm forgings loj tsis tsawg dua 500 hli. Nrog rau txoj kev loj hlob ntawm aircraft thiab cav, aviation forgings muaj ntau dua thiab zoo dua yuav tsum tau, loj loj thiab ntau complex duab. Cov duab ntawm cov khoom siv dav hlau yog qhov nyuaj, thiab kev siv cov khoom siv feem ntau tsis ntau tshaj 10%. Cov khoom siv ntawm plaub qhov loj-loj lub ntsiab bearing reinforcement thav duab ntawm F-22 aircraft yog Ti-6Al-4V ELI, thiab thaj tsam ntawm qhov tuag forgings yog 4.{{ 8.67 m² os. Nyob rau hauv xyoo tas los no, cov cuab yeej tshwj xeeb forging rau aviation titanium alloys hauv kuv lub teb chaws tau txhim kho zoo heev, thiab tam sim no muaj peev xwm tsim cov titanium alloy ib qho forgings ntawm 5 square meters.
Lub dav hlau ua haujlwm nyob rau hauv huab cua txias xws li ultra-siab kub, ultra-low kub, siab nqus tsev, siab zog, thiab muaj zog corrosion. Ntxiv nrog rau qhov xav tau kev tsim qauv tsim thev naus laus zis zoo, nws tseem nyob ntawm cov yam ntxwv zoo thiab kev ua haujlwm ntawm cov ntaub ntawv. Titanium alloys feem ntau yog siv rau hauv kev tsim cov roj cia tso tsheb hlau luam, foob pob hluav taws cav casings, foob pob ua ntxaij nozzle qhia, thiab satellite casings.
Vim muaj cov khoom zoo heev ntawm titanium alloy cov ntaub ntawv, qee qhov tseem ceeb ntawm lub dav hlau tseem ua los ntawm cov ntaub ntawv titanium alloy. Piv txwv li, daim di ncauj ntawm qhov chaw nres nkoj yog ib feem ntawm cov khoom siv titanium alloy los ntawm 3D luam ntawv, uas paub txog kev sib xyaw tsim thiab tsim khoom ntawm cov qauv thiab cov khoom siv.
Titanium alloy fasteners feem ntau siv hauv kev lag luam aerospace feem ntau suav nrog rivets, bolts thiab fasteners tshwj xeeb.
Cov titanium alloy fasteners siv nyob rau hauv F-22 aircraft nyob rau hauv lub tebchaws United States muaj xws li: high-strength titanium alloy bolts, nplhaib zawj ntsia hlau, polished pas nrig taper high-lock bolts, self-clamping bolts, titanium niobium rivets thiab cov neeg rau . Lub dav hlau kev lag luam hauv tsev C919, uas tau ya thawj zaug hauv kuv lub tebchaws xyoo 2014, tau siv ntau dua 200, 000 daim ntawm titanium alloy fasteners rau ib lub dav hlau. Kev txhim kho thiab kev siv ntawm titanium alloy fasteners muab qhov ua tau rau kev txo qhov hnyav ntxiv ntawm cov qauv dav hlau. Tus qauv hnyav ntawm Boeing 747 aircraft tau txo los ntawm 1814 kg tom qab hloov cov hlau nrog titanium. Ib lub dav hlau Lavxias Il{10}} tau siv 142,{12}} fasteners thiab hloov steel nrog titanium kom txo nws qhov hnyav li 600 kilograms.
Titanium alloy muaj kev tiv thaiv corrosion zoo heev, thiab nws qhov muaj peev xwm zoo sib xws ntawm cov ntaub ntawv carbon fiber ntau, uas tuaj yeem tiv thaiv qhov muaj peev xwm corrosion ntawm fasteners. Ti45Nb alloy yog cov khoom siv rivet dav siv hauv kev lag luam aerospace hauv Tebchaws Meskas. Cov khoom muaj zog tensile zoo thiab shear lub zog nyob rau hauv lub xeev annealed, thiab tuaj yeem hloov cov ntshiab titanium rivets. Ti45Nb cov ntaub ntawv kuj muaj cov yas siab thiab tsim nyog rau kev sib txuas rivets rau kev tsim cov khoom sib xyaw.
Nyob rau hauv xyoo tas los no, Timeta1555 titanium alloy high-strength ntsia liaj qhov rooj tsim los ntawm Alcoa muaj lub zog tensile ntawm ntau tshaj 1300 MPa tom qab kev daws cov laus, ob lub zog shear ntau dua 745 MPa, thiab elongation ntawm ntau tshaj 10%. Yuav kom ua raws li txoj kev loj hlob ntawm thoob ntiaj teb high-end titanium alloy fasteners, Xigong University Chaojing Co., Ltd. thiab Xinyang Aerospace Standard Parts Factory koom tes tsim TB8 titanium alloy rods thiab xov hlau rau fasteners, thiab lub zog tensile ntawm bolts ua. ntawm lawv yog siab li 1280MPa. Kev tshawb fawb thiab kev loj hlob ntawm titanium alloy fasteners yog ib qho nyuaj heev thiab ua haujlwm ntev.
Kev loj hlob kev taw qhia ntawm titanium alloy kev lag luam
Qhov kev thov rau titanium alloys rau yav tom ntej aircraft yuav tsum muaj zog dua, muaj zog dua, muaj kev puas tsuaj ntau dua, thiab siab dua kub ua haujlwm. Daim ntawv thov thiab kev loj hlob ntawm titanium alloy cov ntaub ntawv yuav yog: tshiab high-strength structural titanium alloys, high-performance puas-tolerant titanium alloys, tsis tshua muaj nqi qaug zog-resistant titanium alloys, tshiab high-temperature titanium alloys, advanced TiAl-raws li. cov ntaub ntawv, titanium-based composite cov ntaub ntawv, thiab lwm yam ..
Qhov kev thov rau cov qauv hnyav txo ntawm cov dav hlau niaj hnub yog ntau thiab ceev ceev. Ntxiv nrog rau cov ntaub ntawv titanium alloy, cov ntaub ntawv sib xyaw kuj tau siv dav hauv cov qauv davhlau. Kev siv cov ntaub ntawv sib xyaw rau Boeing 787 lub dav hlau tau mus txog 50%, thiab kev siv cov ntaub ntawv sib xyaw rau Airbus A380 kuj tau mus txog 25%. Tam sim no, cov ntaub ntawv sib xyaw tsis tuaj yeem hloov pauv cov hlau, thiab cov ntaub ntawv hlau tseem yog qhov tseem ceeb. Lub elastic modulus ntawm titanium alloy thiab carbon fiber reinforced composite khoom yog matched, thiab thermal expansion coefficient zoo ib yam; thiab nws muaj cov tshuaj zoo sib xws thiab tsis ua rau muaj peev xwm corrosion. Lub tis lub cev sib koom ua ke ntawm F-18 "Bumblebee" siv tus qauv tsim ntawm kev sib koom ua ke ntawm titanium alloy sib koom ua ke thiab cov tawv nqaij sib xyaw. Tom qab ob peb xyoos ntawm kev sim kev pabcuam, kev ntseeg tau ntawm tus qauv tsim tau raug txheeb xyuas. Nrog rau qhov nce ntawm cov khoom sib xyaw, cov khoom siv titanium alloy yuav nce ntxiv.
Nws tuaj yeem pom los ntawm cov ntaub ntawv qhib nyob rau xyoo tas los no tias Tebchaws Meskas cov kev cai rau cov khoom siv dav hlau txuas ntxiv mus yog qhov sib dua, ua haujlwm zoo dua, thiab tswj tau tus nqi. Raws li 2006 txiaj tus nqi, tus nqi ntawm ib qho F-22 yog kwv yees li 361 lab US las. F-35 thawj zaug tau them nqi ntawm $ 35 lab, tom qab ntawd tau nce mus rau $ 138 lab. Ntawm cov nqi loj, tus nqi siab ntawm titanium alloy manufacturing yog qhov tseem ceeb uas tsis tuaj yeem tsis quav ntsej. Tus nqi qis titanium alloys siv Fe, O thiab lwm yam khoom los hloov cov khoom kim dua V, Mo thiab lwm yam khoom. Lub Tuam Txhab Timetal ntawm Tebchaws Meskas tau tsim lub zog siab thiab tus nqi qis-type titanium alloy Timetal-LCB los ntawm kev ntxiv Fe keeb hauv daim ntawv pheej yig Fe-Mo master alloy es tsis txhob kim V caij. Lub hom phiaj yog los hloov tus nqi kim dua Ti- 10V-2Fe-3Al alloy.
Titanium alloy welding, ze-net sib sau, txias sib sau, thiab lwm yam kuj yog txoj hauv kev zoo los txhim kho kev siv cov khoom siv thiab txo cov nqi txheej txheem. Advanced vuam technologies xws li electron beam welding thiab laser welding tau ntse siv nyob rau hauv ib co domestic qauv. Ib pawg laser tsim pab pawg xws li Beihang University thiab Western University of Technology tau ua tiav cov txiaj ntsig zoo hauv kev siv cov thev naus laus zis tshiab titanium alloy.
Nyob rau hauv kev tshawb fawb ntawm cov tshiab high-temperature titanium alloys, nyob rau hauv lub hauv paus ntawm 550 degree high-temperature titanium alloy ntawm IMI829 nyob rau hauv lub tebchaws United Kingdom thiab lub Ti-1100 high-temperature titanium alloy ntawm 600 degree nyob rau hauv lub tebchaws United States, tsawg dua 1% ntawm cov ntsiab lus tsis tshua muaj hauv ntiaj teb Gd thiab Y cov ntsiab lus tau ntxiv raws. Tsim cov oxides uas tsis tshua muaj hauv ntiaj teb, ntxuav cov ciam teb, ua kom cov nplej zoo dua, thiab txhim kho lub zog, nkag mus thiab ua haujlwm ntev ntawm cov hlau. TA12 (Ti55) yog ib qho ze-hom high-temperature titanium alloy ua ke tsim los ntawm Lub Tsev Haujlwm ntawm Kev Tshawb Fawb Hlau, Suav Academy ntawm Kev Tshawb Fawb, Baoti Group thiab Beijing Institute of Aeronautical Materials. Qhov ntsuas kub tsim yog 550 degree. Tam sim no, cov khoom siv Ti55 yog qhov paub tab, thiab qhov kev ua haujlwm ruaj khov kub yog 550 degree txog 600 degree. Tus qauv tsim kub ntawm Ti65 cov khoom yog 600 degree -650 degree, thiab cov ntaub ntawv tshawb fawb tau ua raws li kev coj ua.
Nyob rau hauv xyoo tas los no, kev siv ceev ceev solidification / hmoov metallurgy thev naus laus zis, fiber ntau los yog cov khoom siv sib xyaw ua ke los tsim cov titanium alloys tau raug siv los ua cov kev taw qhia ntawm high-temperature titanium alloys, kom cov kev pab cuam kub ntawm titanium alloys yuav nce mus rau siab tshaj 650 degree. Cov tungsten core titanium matrix composite khoom tsim los ntawm Lub Tsev Haujlwm ntawm Kev Tshawb Fawb Hlau, Suav Academy ntawm Kev Tshawb Fawb tau raug siv rau hauv qee yam.
