Daim ntawv thov ntawm titanium alloy cov ntaub ntawv hauv cov dav hlau loj

Ib tug xov tooj ntawm cov txheej txheem ua los ntawm titanium yog siv nyob rau hauv lub A3XX airliners ntawm Europe lub Airbus, lub B77X aircraft ntawm Boeing Aircraft Company (Boeing), thiab lub C919 ntawm Commercial Aircraft Corporation ntawm Tuam Tshoj (COMAC).
Txoj kev loj hlob ntawm Tuam Tshoj tus kheej ywj pheej tsim C919 loj neeg caij dav hlau pib hauv 2008, thiab thawj tus qauv tau dov tawm ntawm cov kab ntau lawm thiab sim ntawm Commercial Aircraft Corporation ntawm Tuam Tshoj Limited hauv Shanghai thaum Lub Kaum Ib Hlis 2, 2015, thawj lub davhlau tau ua rau 5 Tsib Hlis 2017, thawj lub davhlau ya dav hlau tau tshwm sim rau 10 Kaum Ib Hlis 2017 Shanghai rau lub dav hlau loj thib ob ntawm Pumpang. 17 Lub Kaum Ob Hlis, kos npe rau qhov kev vam meej debut ntawm lub teb chaws tsim loj Lub dav hlau tau nkag mus rau theem tshiab ntawm kev sim dav hlau dav hlau. Txawm hais tias tag nrho cov ntaub ntawv siv hauv cov qauv yog cov khoom txawv teb chaws, nws yog qhov tseem ceeb rau qhov yuav tsum tau txais daim ntawv pov thawj airworthiness, los ntawm lub dav hlau thib ob, cov khoom siv hauv tsev yuav ntau tshaj li ib pawg ntawm ntau tshaj ib, ntau tshaj ib xyoos.
Titanium tau dav siv nyob rau hauv kev tsim cov loj -scale civil aircraft, tsaws iav thiab qee qhov tseem ceeb ntawm lub log yog forged nrog titanium alloy, kuj tseem muaj qee qhov me me ntawm cov khoom forged nrog aluminium alloy. Nyob rau hauv lub dav hlau loj C919, cov net loj ntawm titanium alloy qhov chaw thiab cov khoom suav txog li 10% ntawm tag nrho cov net loj ntawm lub dav hlau, qhov loj tshaj plaws ntawm titanium nyob rau hauv Tuam Tshoj- ua civil aircraft, uas qhov chaw rau titanium (saib daim duab 1): lub qhov ntswg, nrog Ti-6Al-4VEVI forgings; dai, nrog Ti-6Al-4V alloy forging, phaj thiab titanium alloy 55531 forgings; Tail tis nrog Ti-6Al- 4V alloy forgings; sab nrauv tis nrog Ti-6Al-4V alloy forgings thiab daim hlau; nruab nrab tis nrog Ti-6Al-4V ELl alloy forgings; tsaws iav system nrog Ti-6Al-4V alloy forgings.
Ti-6Al-4V (TC4, GB/T3620), a medium-strength (>900MPa) + -hom alloy, yog tsim los ntawm US Watertown (watertown, tseem hu ua Watertown) Arsenal nyob rau hauv 1954, yog dav siv nyob rau hauv aerospace, thiab nws ib nrab -cov khoom tiav accounted rau 55%-65% ntawm lub ntiaj teb no tag nrho cov tsim ntawm titanium, uas yog siv rau kev tsim khoom ntawm ntau yam kev ua tau zoo, vim hais tias muaj ntau yam kev ua tau zoo ntawm lub tsheb. tus nqi, molding thaum ntxov, feem ntau nyob rau hauv - kev tshawb fawb tob, lub sij hawm ntev tshaj ntawm kev siv thiab ntau yam ntawm daim ntawv thov, lub alloy tau tuav ib tug vigorous vitality txij li thaum nws yug los 67 xyoo dhau los. Cov hlau no Tuam Tshoj lub npe lag luam rau TC4, Tebchaws Asmeskas lub tuam txhab titanium (Timet) hom rau Ti-6Al-4V, Tebchaws Asmeskas cov tuam txhab hlau ua haujlwm rau RMI 6Al4V, British titanium hlau rau IMI318, Nyiv Sumitomo Metals for the STAI 'KTA, German ST4, 2018, STAI, 2019 Lub tuam txhab rau LT31. TC4 alloy nyob rau hauv lub annealed TC4 alloys yog siv nyob rau hauv annealed mob thiab yuav ua tau cua sov- kho kom muaj zog, tab sis muaj tsis zoo weldability. ti-6Al-4V Lub "ELI" hauv ELI sawv cev rau Extro-Low Interstitial titanium alloy, uas yog thiab + titanium alloys uas tsim nyog rau kev siv kub tsawg, thiab nws lub zog muaj zog nce nrog txo qhov kub thiab txias. Lawv tsim nyog siv rau qhov kub thiab txias. Lawv lub zog muaj zog nce raws li qhov kub thiab txias, thiab lawv cov tawv tawv tsis tshua muaj qis thaum qhov kub thiab txias, yog li lawv tuaj yeem siv los tsim cov khoom siv hluav taws xob qis. Qhov kub ntawm cov titanium alloys muaj cov pa oxygen tsawg heev, los ntawm 0.2% oxygen mus rau tsawg dua los yog sib npaug rau 0.12%, tuaj yeem siv rau qhov kub thiab txias (77K), cov alloys feem ntau yog Ti-5Al-2.5Sn (ELI) thiab Ti-6AI-4V (ELI). Ti-5Al-2.5Sn ELI yog ib qho American alloy uas tau qhia nyob rau hauv thaum ntxov 1960s thiab luam nyob rau hauv Tuam Tshoj nyob rau hauv lub xyoo 1970s raws li lub npe TA7 (Suav tub rog qauv GJ B495). Ti-5Al-2.5Sn ELI yog tshwj xeeb tshaj yog haum rau cov kua roj tso tsheb hlau luam uas ua haujlwm ntawm -255 degree. Ob leeg ntawm cov titanium alloys tau zoo los ntawm Tuam Tshoj Baoti Group.
European Airbus A380 cov neeg caij dav hlau loj, yog lub ntiaj teb loj tshaj plaws dav - lub cev dav hlau dav hlau, tab sis kuj yog qhov loj tshaj plaws ntawm titanium, titanium alloy qhov chaw thiab cov khoom ntawm cov khoom loj ntawm kwv yees li 10% ntawm tag nrho cov net loj ntawm lub dav hlau, ib lub tshuab titanium ntau npaum li ntawm 65 tonnes. Titanium alloy qhov chaw feem ntau yog (saib daim duab 2): cav pods, daim tawv nqaij, txuas rau lub qhov ncauj, txuas lub nplhaib tis, pem hauv ntej bulkhead, ncej nruab nrab ntawm lub puab flap thiab lub tis, folding nplooj rail khiav, trailing ntug, ncej qhov chaw, folding nplooj 3 qhov cuab lub zog, cav ib feem ntawm lub hanger, pem hauv ntej ib feem ntawm lub bracket, propulsion. weldable tis (bar) rail.