Daim ntawv thov piv txwv ntawm Titanium Alloy Forging txheej txheem hauv kev lag luam aviation

Nrog rau txoj kev loj hlob sai ntawm kuv lub teb chaws kev lag luam, kev tshawb fawb thiab thev naus laus zis, kev lag luam aerospace thiab aviation tau coj txoj hauv kev tshiab rau kev txhim kho nyob rau xyoo tas los no, tshwj xeeb tshaj yog tom qab tsim lub teb chaws "cov dav hlau loj" project, kev lag luam aviation kev lag luam yuav dhau los ua ib qho kev lag luam. kev lag luam tshiab coj txoj kev loj hlob ntawm lub teb chaws kev lag luam kev loj hlob taw tes, muaj broad prospects rau txoj kev loj hlob. Txhawm rau txhawm rau txhim kho kev nce qib, kev ntseeg tau thiab siv tau ntawm cov dav hlau, thiab ua kom muaj kev sib tw ntawm cov dav hlau hauv tsev hauv kev lag luam thoob ntiaj teb, cov tuam txhab tsim hluav taws xob tsim hluav taws xob muaj ntau dua thiab siab dua rau kev xaiv cov khoom siv dav hlau; Cov yam ntxwv tseem ceeb ntawm titanium alloys yog qhov tshwj xeeb me me thiab lub zog siab. Nyob rau tib lub sijhawm, nws muaj kev ua haujlwm zoo thaum tshav kub kub thiab corrosion kuj. Nws tau dhau los ua cov khoom tseem ceeb ntawm niaj hnub aircraft kev ntxhov siab Cheebtsam, uas zoo heev txo qhov hnyav ntawm aircraft. Ntawm lawv, TC4 (Ti-6AL-4V) thiab TB6 titanium alloy forgings yog siv dav hauv kev tsim khoom dav hlau. .

Raws li lub microstructure ntawm chav tsev kub, titanium alloys tuaj yeem muab faib ua peb hom: -type alloys, + -hom alloys thiab -type alloys. Nws muaj zoo malleability tab sis qhov kub thiab txias yog tsawg heev yuav ua rau -phase nag lossis daus. Cov txheej txheem forging ntawm titanium alloy yog muab faib ua pa forging thiab siab kub forging raws li kev sib raug zoo ntawm forging kub thiab transformation kub.

2.1 Pa forging ntawm titanium alloy

Feem ntau siv deformed titanium alloys feem ntau yog forged hauv qab qhov kev hloov pauv kub, uas yog hu ua pa forging. Raws li cov cua kub kub ntawm lub billet nyob rau hauv lub cheeb tsam (+) theem, nws muaj peev xwm muab faib mus rau hauv lub Upper ob-theem cheeb tsam forging thiab qis dua ob-theem cheeb tsam forging. ?

2.1.1 Forging nyob rau hauv qis dua ob-theem cheeb tsam

Forging nyob rau hauv qis dua ob-theem cheeb tsam yog feem ntau rhuab thiab forged ntawm 40-50 degree hauv qab qhov kub ntawm transformation. Lub sijhawm no, thawj theem thiab yog tib yam thiab koom nrog deformation. Qhov qis deformation kub, qhov ntau-theem koom nrog hauv deformation. Piv nrog rau qhov deformation hauv cheeb tsam, cov txheej txheem recrystallization ntawm theem hauv cheeb tsam qis dua ob theem yog nrawm nrawm, thiab cov nplej tshiab tsim los ntawm recrystallization tsis tsuas yog precipitate raws li deformed thawj ciam teb, tab sis kuj nyob rau hauv cov nplej ciam teb thiab daim ntawv. txheej. tshwm sim nyob rau hauv-intermediate txheej. Lub forging tsim los ntawm cov txheej txheem no muaj lub zog siab thiab zoo plasticity, tab sis nws cov pob txha toughness thiab creep zog tseem muaj peev xwm zoo.

2.1.2 Forging nyob rau hauv lub Upper ob-theem cheeb tsam

Nws yog forged ntawm qhov kub ntawm 10-15 degree hauv qab qhov /( + ) transformation point. Cov qauv zaum kawg tom qab deformation muaj ntau dua -hloov qauv, uas tuaj yeem txhim kho qhov kev ua tau zoo thiab tawg toughness ntawm cov qauv; ua cov titanium alloy muaj ob qho tib si yas, lub zog thiab toughness.

2.2 Kub forging ntawm titanium alloy

Kuj tseem hu ua "forging", nws tuaj yeem muab faib ua ob hom: thawj yog cov txheej txheem uas lub billet yog rhuab nyob rau hauv cheeb tsam, thiab forging yog pib thiab ua tiav hauv cheeb tsam; Qhov thib ob yog tias lub billet yog rhuab nyob rau hauv lub cheeb tsam, thiab forging yog pib nyob rau hauv lub cheeb tsam. Thiab tswj ntau qhov deformation kom tiav cov txheej txheem forging nyob rau hauv ob-theem cheeb tsam, hu ua "sub- forging". Piv nrog rau forging nyob rau hauv ob-theem cheeb tsam, forging yuav tau ntau dua creep zog thiab puas toughness, thiab kuj muaj txiaj ntsim los txhim kho cov qaug zog kev kawm ntawm titanium alloy.

2.3 Isothermal tuag forging ntawm titanium alloy

Cov txheej txheem no siv cov superplasticity thiab creep mechanism ntawm cov khoom los tsim ntau txoj kev forgings, thiab xav kom cov pwm yuav tsum tau preheated thiab khaws cia nyob rau hauv qhov ntau ntawm 760-980 degree ; lub hydraulic xovxwm siv lub siab ntawm tus nqi predetermined, thiab kev ua hauj lwm ceev ntawm cov xovxwm yog tswj los ntawm qhov khoob. Deformation kuj tau hloov kho. Txij li cov pwm yog rhuab hloov, nws tsis yog yuav tsum tau siv raws li cov kab teeb txav ceev kom tsis txhob quenching. Ntau forgings siv nyob rau hauv aircraft muaj cov yam ntxwv ntawm nyias phab ntsa thiab tav siab, yog li cov txheej txheem no tau siv nyob rau hauv aviation manufacturing, xws li cov isothermal precision tuag forging txheej txheem ntawm TB6 titanium alloy rau ib yam ntawm cov domestic aircraft.

Cov txheej txheem forging ntawm titanium alloy yog dav siv nyob rau hauv aviation thiab aerospace manufacturing, thiab cov txheej txheem isothermal forging tau siv los tsim lub cav qhov chaw thiab cov khoom siv dav hlau; nws kuj yog ntau thiab nrov nyob rau hauv industrial sectors xws li tsheb, hluav taws xob fais fab thiab nkoj. Nyob rau hauv txawv teb chaws, daim ntawv thov ntawm titanium alloys tau tsim los rau ib tug heev theem, TiAL alloys thiab intermetallic tebchaw siv nyob rau hauv kub siab dua tau raug them nyiaj mloog mus rau, thiab ntau yam kev tshawb fawb tau ua tiav; txhawm rau siv cov ntaub ntawv no zoo dua, tib lub sijhawm Kev tshawb fawb ntau kuj tau ua tiav ntawm nws cov txheej txheem deformation. Tib neeg kuj tau them nyiaj ntau thiab ntau dua rau kev tshawb fawb ntawm lub zog siab dua sub-titanium alloys. Daim ntawv thov ntawm titanium alloy thiab kev tshawb fawb ntawm forging txheej txheem tseem yuav yog lub ntsiab lus kub.