Vim li cas thiaj siv titanium pas nrig hauv aerospace?
Thaum tus neeg caij dav hlau hla saum ntuj, thaum lub foob pob hluav taws soars mus rau saum ntuj ceeb tsheej, tom qab tib neeg txoj kev kov yeej ntawm lub ntuj yog qhov kev txhawb nqa ntsiag to ntawm cov ntaub ntawv suav tsis txheeb. Nyob rau hauv cov ntaub ntawv aerospace daim ntawv teev npe, titanium rods, nrog lawv cov cim ntxim nyiam ntawm "lub teeb li plaub thiab muaj zog li hlau," tau dhau los ua lub zog tseem ceeb ntawm kev tsav tsheb thev naus laus zis. Los ntawm lub cav hniav mus rau qhov tsaws iav qauv, los ntawm kev txhawb nqa satellite mus rau qhov chaw sib sib zog nqus sojntsuam plhaub, titanium rods yog ubiquitous. Dab tsi ua rau lawv yog "tus hlub" ntawm aerospace teb?
Qhov zoo tshaj plaws sib npaug ntawm qhov ceev thiab lub zog ua rau lub davhlau sib zog thiab ua haujlwm tau zoo.
Aerospace xav tau yuav luag nruj rau cov khoom siv-lawv yuav tsum yog lub teeb txaus los txo kev siv hluav taws xob, tseem muaj zog txaus los tiv thaiv cov khoom hnyav. Titanium rods tsuas muaj 60% qhov ntom ntawm cov hlau, tseem muaj zog tensile piv. Qhov "lub teeb hnyav tsis muaj zog" tus yam ntxwv ua rau lawv xaiv qhov zoo tshaj plaws rau kev txo qhov hnyav. Piv txwv li, C919 neeg nrog caij dav hlau, tom qab siv TC4 titanium alloy rods rau nws tis spars, ua tiav 30% qhov hnyav ib chav tsev thiab 12% kev txhim kho roj efficiency. Nyob rau hauv lub foob pob ua ntxaij launches, txhua kilogram ntawm qhov hnyav txo nce qhov ntau los ntawm 15 kilometers, ncaj qha txhais lub teeb kom zoo dua ntawm titanium rods mus rau ntau dua kev tshawb fawb horizons.
Qhov tseem ceeb tshaj plaws yog tias titanium rods tsis nkig. Lawv tuav cov khoom ruaj khov txawm tias qhov kub tsis tshua muaj siab ntawm -253℃lossis siab kub ntawm 600 degree, tsis zoo li aluminium alloys uas ua nkig lossis muag nrog qhov kub thiab txias. Qhov no tag nrho - huab cua hloov pauv ua rau titanium rods yog "tus yuam sij thoob ntiaj teb" rau kev tshawb nrhiav los ntawm lub ntiaj teb nyob ze rau qhov chaw tob.
Dual tiv thaiv corrosion thiab kub kub, ntsib huab cua puag ncig.
Aerospace tsheb ntsib tsis tau tsuas yog cov kev cov nyom ntawm lub ntiajteb txawj nqus thiab ceev, tab sis kuj muaj corrosive gases, siab - nplaim taws kub, thiab cosmic rays. A dense oxide film naturally forms on the surface of titanium rods, making them virtually "immune" to seawater, chloride ions, and oxidizing acids. Piv txwv li, TA9 titanium rods muaj lub neej corrosion kuj 3-5 zaug ntev dua stainless hlau hauv cov kav dej tshuaj. Cov yam ntxwv no kuj tseem siv tau rau hauv lub nkoj hiav txwv seawater riser kav thiab roj tso tsheb hlau luam, kom ntseeg tau tias lub sijhawm ntev ruaj khov ntawm cov khoom siv hauv qhov chaw hnyav.
Nyob rau hauv lub cav, titanium rods muab unparalleled siab -kub kuj. Thaum compressor qhov hluav taws xob kub siab tshaj 500 degree, tsoos txhuas alloys tsis txaus, thaum titanium alloy rods tuaj yeem tiv taus 600 degree, thiab TiAl alloys tsim tshiab tuaj yeem thawb qhov txwv mus rau 1040 degree. Qhov "cov ntaub thaiv npog cua sov" no tso cai rau cov cav ua haujlwm ntawm kev sib zog siab dua- rau- qhov hnyav piv, lub dav hlau txav mus rau qhov cuam tshuam lub suab thiab ua rau lub sijhawm supersonic.
Lub fusion ntawm biocompatibility thiab kev tsim kho tshiab nthuav dav daim ntawv thov ciam teb.
Cov txuj ci ntawm titanium rods txuas mus deb tshaj aerospace. Hauv kev kho mob, lawv tsis yog - tshuaj lom, tsis yog - cov khoom sib nqus, thiab biocompatibility zoo heev ua rau lawv nyiam cov khoom siv rau cov pob qij txha thiab kev cog hniav. Piv txwv li, orthopedic implants ua los ntawm TA9 titanium rods shorten postoperative recovery lub sij hawm los ntawm 15% -20% thiab tshem tawm cov kev pheej hmoo ntawm hlau ion tso tawm, tiag tiag ua tiav "co-loj hlob nrog tib neeg lub cev."
Tsis tas li ntawd, titanium rods txuas ntxiv ua tiav kev ua tiav hauv kev siv thev naus laus zis . 3D tshuab luam ntawv, los ntawm laser cladding, tso cov titanium alloy hmoov txheej los ntawm txheej, ncaj qha tsim cov txheej txheem cov txheej txheem, nce kev siv cov khoom siv los ntawm 15% hauv cov tsoos forging mus rau 85%. Laser poob siab peening tuaj yeem tsim cov kev ntxhov siab seem ntawm -800MPa rau ntawm titanium rods, txuas lub neej qaug zog los ntawm 300%. Cov kev tsim kho tshiab no tsis tsuas yog txo cov nqi xwb tab sis kuj nthuav dav daim ntawv thov ntawm titanium rods los ntawm "high-end tshwj xeeb" mus rau "universal."
Lub neej yav tom ntej nyob ntawm no: Titanium Rods Lead A New Era hauv Aerospace
Los ntawm 15% titanium cov ntsiab lus hauv Boeing 787 mus rau 14% titanium alloy qauv hauv A350, thiab 9.3% titanium cov ntsiab lus hauv Tuam Tshoj C919, kev cia siab ntawm cov dav hlau thoob ntiaj teb ntawm titanium rods yog sib sib zog nqus txhua xyoo. Nrog kev nce siab ntawm cov chaw tsim hluav taws xob nuclear, qhov tob - kev tshawb nrhiav dej hiav txwv, thiab thaj chaw hluav taws xob tshiab, kev lag luam xav tau rau titanium rods yuav txuas ntxiv tawg. Tsis tas li ntawd, kev txhim kho ntawm cov nqi qis - titanium alloys, xws li hloov cov niobium thiab molybdenum kim nrog hlau, yog ua rau "txoj kev zoo hlau" no siv tau rau txhua tus.
Thaum tib neeg ntsia lub hnub qub, titanium pas nrig, raws li "cov neeg saib xyuas tsis pom," txhawb kev npau suav ntawm txhua lub davhlau. Nws tsis yog tsuas yog cov khoom siv tshiab xwb, tab sis kuj yog qhov txuas ntxiv ntawm tib neeg kev tshawb nrhiav ntawm thaj tsam. Xaiv titanium rods txhais tau hais tias xaiv lub teeb, muaj zog dua, thiab ntev dua yav tom ntej - tso cai rau kev ya dav hlau thiab kev tshawb nrhiav tob dua.
