Airbus's A380, Boeing's B77X, Comac's C919, thiab CR929, Sino-Lavxias koom ua lag luam, txhua tus siv ib feem ntawm titanium ua cov khoom siv.
Txoj kev loj hlob ntawm Tuam Tshoj-tsim C919 loj neeg caij dav hlau pib nyob rau hauv 2008. Thaum lub Kaum Ib Hlis 2, 2015, thawj tus qauv hauv Shanghai lag luam dav hlau tuam txhab ntawm Tuam Tshoj dov tawm cov kab ntau lawm thiab kev sim, lub Tsib Hlis 5, 2017, tau nqa ntawm thawj zaug. ferry davhlau thaum lub Kaum Ib Hlis 10, 17 Lub Kaum Ob Hlis thib ob C919 lub dav hlau loj thiab ua tiav hauv Shanghai Pudong tshav dav hlau thawj zaug, cim lub dav hlau loj hauv tsev nkag mus rau theem tshiab sim davhlau. Txawm hais tias tag nrho cov khoom siv hauv cov qauv yog cov khoom txawv teb chaws, nws yog qhov tseem ceeb kom tau txais cov ntaub ntawv pov thawj airworthiness. Txij li thaum lub dav hlau thib ob, tus nqi ntawm cov khoom siv hauv tsev tau ntau tshaj ib pawg, thiab ntau tshaj ib xyoos.
Titanium thiab titanium alloy cov ntaub ntawv tau siv dav hauv kev tsim cov dav hlau loj hauv pej xeem. Piv txwv li, qee qhov tseem ceeb ntawm kev tsaws iav thiab lub log yog forged nrog titanium alloy, thiab qee qhov me me yog forged nrog aluminium alloy. Hauv C919, qhov loj ntawm titanium alloy qhov chaw suav txog li 10 feem pua ntawm tag nrho cov net loj ntawm lub dav hlau, uas yog cov khoom siv titanium tshaj plaws siv ntawm cov dav hlau hauv Suav teb. Yam twg yog ua los ntawm titanium (saib daim duab 1): lub qhov ntswg yog forged nrog TI-6Al-4VEVI; lub Hanging, siv Ti-6Al-4V alloy forging, phaj, thiab titanium alloy 55531 forgings; Lub tis sab nrauv yog ua los ntawm Ti-6Al-4V alloy forgings thiab daim hlau; Lub hauv paus tis yog forged nrog Ti-6Al-4V ELl alloy; Ti-6al{13}}v alloy forgings yog siv rau tus Tsov tus tw fins; Kev tsaws iav siv Ti-6Al-4V alloy forgings.
Ti-6al-4v (TC4, GB/T3620) is a kind of α+β alloy with medium strength (>9 00MPa). Nws tau tsim los ntawm Watertown Arsenal hauv Tebchaws Meskas hauv xyoo 1954 thiab tau siv dav hauv thaj chaw aerospace. Nws cov khoom ua tiav ib nrab suav rau 55 feem pua -65 feem pua ntawm tag nrho cov khoom siv titanium hauv ntiaj teb. Siv nyob rau hauv zus tau tej cov aerospace thiab spacecraft forgings thiab daim hlau, vim hais tias nws muaj zoo heev kev ua tau zoo, tus nqi nruab nrab, molding thaum ntxov, feem ntau nyob rau hauv-tob tshawb fawb, lub sij hawm siv ntev tshaj plaws, thiab daim ntawv thov dav tshaj plaws nyob rau hauv lub tshav pob, yog li cov alloy. tau yug los 67 xyoo dhau los tau tuav lub zog tseem ceeb. Lub npe alloy lub npe yog TC4 nyob rau hauv Suav teb, GR.5 (Ti-6Al-4V) los ntawm American Titanium Company (Timet), RMI 6Al4V los ntawm American Active Metal Company, IMI318 los ntawm teb chaws Aas Kiv, BT6 los ntawm Russia , ST-AI40 los ntawm Sumitomo Hlau Tuam Txhab ntawm Nyiv thiab TA6V los ntawm Fabkis. Krupp LT31. TC4 alloy tuaj yeem ua kom muaj zog los ntawm kev kho cua sov hauv lub xeev annealing, tab sis nws cov weldability tsis zoo. Lub "ELI" hauv Ti-6Al-4V ELI qhia tau hais tias qhov qis qis Interstitial titanium alloy yog ib hom thiab ntxiv rau titanium alloy haum rau siv thaum kub qis. Lawv lub zog muaj zog nce nrog qhov txo qis ntawm qhov kub thiab txias, thiab lawv qhov toughness tsis tshua muaj zog nrog qhov txo qis. Yuav siv tau los tsim cov khoom siv hluav taws xob qis. Tsawg-kub titanium alloy oxygen cov ntsiab lus tsawg heev, los ntawm cov qib zoo tib yam ntawm 0.2 feem pua oxygen mus rau tsawg dua lossis sib npaug li 0.12 feem pua, thiab tuaj yeem siv rau qhov kub thiab txias (< 77K), typical alloys are Ti-5Al-2.5Sn (ELI) and Ti-6AI-4V (ELI). Ti-5al-2.5sn ELI is a KIND of American alloy, which was introduced in the early 1960s and successfully copied by China in the late 1970s. The brand is TA7 (Chinese military standard GJ B495). Ti-5al-2.5sn ELI alloy is particularly suitable for liquid fuel tanks operating at -255℃.
Yog tias koj xav paub ntau ntxiv txog xov xwm Titanium,thov nias ntawm no.
Tiv tauj peb:zhangjixia@bjygti.com
