Dab tsi ntawm forgings yog siv nyob rau hauv supersonic aircraft?
Thaum lub dav hlau fighter tho lub ntuj ntawm ob peb lub sij hawm lub suab ceev, thiab thaum coj mus muag supersonic neeg nrog caij dav hlau redefine lub tswvyim ntawm "qhov kawg ntawm lub ntiaj teb no nyob ze," tib neeg txoj kev nrhiav kev ceev tsis tau tso tseg. Txawm li cas los xij, tom qab tawg lub suab thaiv yog qhov kev sib tw ntawm cov ntaub ntawv kev tshawb fawb rau nws qhov kev txwv - cov khoom siv aluminium ib txwm soften yooj yim ntawm qhov kub thiab txias, thiab cov ntaub ntawv sib xyaw, txawm tias hnyav, tsis tuaj yeem tiv taus kev ntxhov siab heev. Tsuas yog titanium alloy forgings, nrog rau lawv "kev sib txuas ntawm lub zog thiab kev hloov pauv," tau dhau los ua cov kev txhawb nqa tseem ceeb rau lub dav hlau supersonic.
Titanium Forgings: Lub "Superpowers" tso cai los ntawm Forging Technology
Cov txheej txheem forging ntawm titanium alloys tuaj yeem piav qhia raws li qhov tseeb "hlau reshaping txheej txheem." Tsis zoo li castings, uas tej zaum yuav muaj qhov tsis xws luag xws li porosity thiab cua npuas, titanium forgings, los ntawm kev rov hammering thiab extrusion nyob rau hauv siab kub thiab siab, refine lub internal grains ntawm cov hlau, ua rau cov qauv denser, nce lub zog los ntawm ntau tshaj 30%, thiab ua kom muaj kev cuam tshuam toughness 1.5 npaug ntawm castings. Cov txheej txheem no tso cai rau titanium forgings nrog ob qhov zoo: ua ntej, siab -kub tsis kam. Nyob rau hauv lub siab - compressor compressor disks ntawm aero engines, titanium forgings yuav tsum tiv taus kub tshaj 1000℃thiab centrifugal rog ntawm kaum tawm txhiab tus kiv puag ncig; lawv creep kuj ncaj qha txiav txim lub cav lub neej. Thib ob, qaug zog tiv thaiv. Lub dav hlau tsaws iav struts tiv taus ntau lab ntawm kev ntxhov siab thaum lub sij hawm tawm mus thiab tsaws; qhov zoo heev qaug zog tiv thaiv ntawm titanium forgings ua hauj lwm raws li ib tug "invisible shield" kom muaj kev ruaj ntseg davhlau.
Siv lub Boeing 787 Dreamliner ua piv txwv. Nws lub fuselage siv 136 tons ntawm titanium, suav txog 15% ntawm tag nrho cov dav hlau hnyav. Cov khoom tseem ceeb-cov kabmob xws li tsaws iav struts thiab fuselage ncej kab teeb txhua yam siv titanium forgings, tsis tsuas yog txo qhov hnyav ntawm ib lub fuselage los ntawm 800 kg thiab nce qhov ntau ntawm 1200 km, tab sis kuj ua rau pom qhov txuj ci tseem ceeb ntawm "lub teeb hnyav tseem muaj zog" nyob rau hauv huab cua huab cua.
Los ntawm Tub Rog mus rau Civilian: "Tag nrho-Round Battlefield" ntawm Titanium Forgings
Daim ntawv thov scenarios ntawm titanium forgings tau ntev txij li tau nthuav dav dhau ntawm thaj chaw aviation ib txwm muaj. Hauv kev ua tub rog, F-22 fighter dav hlau siv txog li 39% titanium. Nws cov khoom tseem ceeb, xws li lub cav kiv cua discs thiab compressor hniav, cia siab rau siab - qhov kub thiab txias zog thiab qis - cov khoom ntom ntom ntawm titanium forgings kom ua tiav qhov sib npaug zoo ntawm kev sib tw thiab lub teeb yuag. Hauv kev lag luam pej xeem, titanium forgings tau dhau los ua cov khoom siv hauv siab -kawg iav: hauv cov cuab yeej tshawb nrhiav hauv hiav txwv tob, lub siab hulls ua los ntawm titanium forgings tuaj yeem tiv taus qhov siab ntawm 7000 meters tob hauv dej hiav txwv, txo qhov hnyav los ntawm 40% piv rau cov khoom siv hlau; Hauv kev lag luam tshuaj, cov kua qaub thiab alkali tsis kam ntawm titanium forgings deb tshaj ntawm cov hlau tsis muaj steel, ncua kev pab cuam lub neej los ntawm 5-8 xyoo; Txawm nyob rau hauv kev kho mob, titanium forging dag pob qij txha, nrog rau lawv zoo heev biocompatibility, txo lub sij hawm rov qab los rau cov neeg mob los ntawm 30%.
Qhov tseem ceeb tshaj, nrog rau kev loj hlob sai ntawm cov tsheb loj heev (kev nrawm tshaj Mach 5), daim ntawv thov ciam teb ntawm titanium forgings txuas ntxiv nthuav dav. Txawm hais tias kev ya davhlau saum Mach 6 yuav tsum tau siv cov cua sov ntau dua- cov ntaub ntawv tiv taus xws li ceramic matrix composites, hauv Mach 3-5 thermal barrier range, titanium alloys tseem yog tus nqi tshaj plaws - kev xaiv zoo. Piv txwv li, US SR-71 Blackbird reconnaissance aircraft tuaj yeem ncav cuag qhov kub thiab txias ntawm 300℃thaum caij nkoj ntawm Mach 3.2. Nws yog qhov kub-kub ruaj khov ntawm titanium alloy forgings uas ua rau nws teeb tsa ntau cov ntaub ntawv davhlau.
Lub neej yav tom ntej nyob ntawm no: Lub "Golden Age" ntawm Titanium Forgings
Los ntawm kev tsim khoom loj ntawm Tuam Tshoj lub teb chaws tsim C919 loj neeg caij dav hlau mus rau "10,000-meter sib sib zog nqus- hiav txwv dhia dej" mus rau qhov tob- chaw nres tsheb hiav txwv, los ntawm cov pa hluav taws xob hluav taws xob ntawm cov roj hluav taws xob mus rau kev cog qoob loo rau siab -kawg daim ntawv thov kev kho mob, kev lag luam xav tau 15% ntawm kev loj hlob txhua xyoo. Tom qab qhov kev loj hlob no yog qhov ua tsis tu ncua ntawm kev siv tshuab forging: kev sib xyaw ua ke ntawm 3,000-tuj siab- ceev forging hydraulic xovxwm thiab precision CNC ntau lawm kab ua tiav kev tswj hwm ntawm "ib qho hluav taws kub sib sau"; ntau tshaj 20 qhov kev ntsuam xyuas, suav nrog kev kuaj xyuas qhov tsis txaus ntseeg thiab kuaj cov khoom siv tshuab, xyuas kom tsis muaj qhov tsis xws luag; thiab optimized cov ntaub ntawv formulations thiab customized forging txheej txheem tso cai rau txhua titanium forging kom zoo kawg nkaus haum huab cua ua hauj lwm tej yam kev mob.
Raws li kev nrawm dhau los ua lo lus tseem ceeb hauv kev sib tw, thiab raws li qhov hnyav txo thiab kev txhim kho kev ua haujlwm tau dhau los ua cov ntsiab lus tseem ceeb ntawm kev tsim, titanium forgings, nrog rau lawv cov kev ua tau zoo tsis tuaj yeem hloov tau, yog tsav cov kev hloov pauv ntawm qib siab - cov khoom siv kawg ntawm kev sib zog, muaj zog, thiab ntau dua kev tsim qauv. Los ntawm ntuj mus rau lub hiav txwv tob, los ntawm kev sib ntaus sib tua mus rau pej xeem siv, forging lus dab neeg ntawm no "qhov chaw hlau" tsuas yog pib.
