Kev ua tau zoo ntawm GR5 titanium forgings nyob rau hauv hydraulic xovxwm thiab forging rauj forging txheej txheem
Ua ntej
GR5 titanium alloy muaj cov khoom zoo thiab tuaj yeem siv rau hauv aerospace, petrochemical, marine engineering, tsheb thauj mus los thiab lwm yam haujlwm. Nrog rau kev loj hlob sai ntawm Tuam Tshoj txoj kev lag luam aerospace, qhov kev thov rau GR5 titanium alloy forgings kuj nce. Yog li, Kev Tshawb Fawb Txog GR5 titanium alloy forgings yog qhov tseem ceeb heev.
Forging yog cov txheej txheem tshwj xeeb uas tuaj yeem txhim kho lub zog thiab hardness ntawm cov ntaub ntawv hlau. Nws muaj qhov zoo ntawm kev ua haujlwm siab, tsis tshua muaj nqi, thiab cov khoom zoo. Nrog rau txoj kev loj hlob thiab kev loj hlob ntawm forging technology, forging technology kuj tseem niaj hnub tsim. thiab zoo tag nrho.
Nyob rau hauv xyoo tas los no, titanium alloy forgings tau dhau los ua ntau thiab siv dav hauv thaj chaw aerospace, thiab lawv cov kev ua tau zoo tau nce siab dua. Yuav ua li cas npaj cov khoom zoo, ua haujlwm siab GR5 titanium alloy forgings tau dhau los ua teeb meem ceev hauv thaj chaw aerospace.
Kev tsim cov txheej txheem ntawm titanium alloy forgings
Titanium alloy yog cov khoom siv hlau nrog cov khoom zoo heev. Vim tias nws qhov qis qis, muaj lub zog loj, thiab cov zoo corrosion tsis kam, nws yog dav siv hauv aerospace, marine engineering thiab lwm thaj teb. Tam sim no, kev tsim cov txheej txheem ntawm titanium alloys feem ntau suav nrog forging thiab casting, uas forging muab faib ua txias forging thiab kub forging.
Txias forging siv lub forging rau vertically ntaus titanium alloy forgings ntawm chav tsev kub, ua rau cov hlau ntws maj mam thiab sib npaug raws li qhov ntev ntawm forging, thiaj li tsim ib qho microstructure nyob rau hauv lub forging. Qhov zoo ntawm forging txias yog cov cuab yeej siv yooj yim, dav forging kub ntau, haum rau cov khoom loj thiab cov nqi qis; Qhov tsis zoo yog cov txheej txheem forging complex, siab deformation kuj thiab ntev forging lub sij hawm.
Kub forging yog hais txog kev tsim ntawm ntau tus microstructure thiab cov yam ntxwv tsis xws luag, xws li martensite, ferrite, thiab lwm yam, hauv cov forging los ntawm kub extrusion, isothermal forging, isothermal normalizing thiab lwm yam txheej txheem. Qhov zoo ntawm cov kub forgings yog cov cuab yeej siv yooj yim thiab muaj peev xwm tiv taus qhov loj deformation rog thiab deformation kub; qhov tsis zoo yog lub voj voog ntau lawm ntev thiab kev ua haujlwm tsawg.
Thaum lub sij hawm forging txheej txheem ntawm GR5 titanium alloy, vim nws tus kheej thermal expansion coefficient txawv ntawm cov khoom siv hlau, nws muaj qhov dav forging kub ntau thiab ua haujlwm kub zoo.
Yog li, GR5 titanium alloy forgings feem ntau yog tsim los ntawm forging. Txhawm rau kom ntseeg tau qhov zoo ntawm GR5 titanium alloy forgings, lawv feem ntau ua kom sov rau cov txheej txheem kub ua ntej yuav forged siv xovxwm.
Rau qhov kub forging ntawm titanium alloys, tam sim no muaj ob txoj hauv kev tseem ceeb: ib qho yog muab cov forged rau hauv lub qhov cub cua sov thiab ua kom sov rau cov txheej txheem kub ua ntej forging; lwm yam yog kub forge lub titanium alloy los ntawm kub tuag forging. Ntawm lawv, kub tuag forging yog hais txog ib txoj hauv kev uas titanium alloy uas tau ua kom sov rau cov txheej txheem kub yog muab tso rau hauv pwm thiab tsim los ntawm pwm.
Qhov zoo ntawm kub tuag forging yog me me deformation tsis kam thiab tsis zoo deformation, uas tuaj yeem txo qhov tsis xws ntawm forgings thiab txhim kho qhov zoo thiab kev ua haujlwm ntawm forgings; qhov tsis zoo yog tias nws yuav tsum muaj qhov tseeb qhov tseeb thiab qhov tseeb ntawm forgings.
Muaj peb txoj hauv kev tseem ceeb ntawm kev kub tuag forging ntawm titanium alloys: ib qho yog nruam forging, uas siv cov tshuab tsis tu ncua forging forgings, uas tseem yog txoj kev siv dav tshaj plaws tam sim no; lwm qhov yog ib nrab-nruam forging, uas txhais tau hais tias cov forgings tig nyob rau hauv pwm, tab sis lawv tsis tuaj yeem txuas ntxiv forging yog ua; Qhov thib peb yog dawb forging, uas yog, tsis muaj kev sib hloov yog ua thaum lub sij hawm forging txheej txheem, tab sis lub forging yuav bent.
Lub Koom Haum Saib Xyuas thiab Kev Ntsuam Xyuas
Kev soj ntsuam cov qauv metallographic ntawm GR5 titanium alloy forgings, nws tuaj yeem pom tau tias cov qauv ntawm cov ntxhib tom qab forging yog ze li ntawm cov kab kem martensite + ib qho me me ntawm cov austenite khaws cia, thaum cov qauv ntawm cov forging yog ze li ntawm cov voj voog columnar martensite + me me. ntawm khaws cia austenite. Muaj qhov pom tseeb qhov sib txawv ntawm ob lub cev, thiab qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob.
Thaum lub sij hawm forging txheej txheem, vim lub siab kub ntawm hydraulic xovxwm, high-temperature alloy yog sai rhuab mus rau saum toj no 1000 degree, uas ua rau ntau tshaj forging cua kub ceev, tsis txaus quenching thiab nto oxidation.
Nyob rau tib lub sijhawm, qhov kub ntawm forging ntau dhau kuj ua rau ntau dhau deformation thaum lub sij hawm forging txheej txheem ntawm hydraulic xovxwm, thiab oxidation thiab decarburization tshwm sim thaum lub sij hawm tom qab cua sov. Ob qho laj thawj no ua rau muaj qhov sib txawv loj hauv qhov ntev ntawm forgings.
Kev soj ntsuam ntawm microstructure ntawm forgings qhia tau hais tias tus nqi cua txias thaum lub sij hawm forging txheej txheem kuj loj, thaum lub txias npaum li cas ntawm cov dawb paug tom qab hydraulic tshuab forging yog kuj me me. Qhov kub ntau dhau thaum lub sij hawm forging txheej txheem ua rau muaj qhov sib txawv loj hauv qhov sib txawv ntawm qhov sib txawv ntawm cov forgings. Nyob rau tib lub sij hawm, thaum lub sij hawm forging txheej txheem, forging nplej kuj loj hlob mus rau txawv degrees.
Vim yog qhov ceev ceev ntawm qhov khoob tom qab forging, cov nplej loj ntawm forging yog qhov sib txawv heev. Cov nplej loj ntawm lub forging thaum lub sij hawm forging txheej txheem yog loj dua li cov nplej loj ntawm qhov khoob tom qab forging los ntawm hydraulic tshuab; lub microstructure tsim thaum lub sij hawm forging txheej txheem yog tsuas yog ze li ntawm ncig thiab columnar. Martensite + ib qho me me ntawm austenite khaws cia; Thaum lub sij hawm forging txheej txheem, cov nplej forging yog ntxhib thiab tsis sib npaug.
Vim lub siab forging kub, GR5 titanium alloy muaj lub zog siab thiab hardness ntawm chav tsev kub, thaum lub forging kub yog tsawg dhau, ua rau cov yas deformation tsis txaus, tsis txaus quenching thiab oxidation.
Tsis tas li ntawd, vim qhov kub kub ntawm hydraulic xovxwm, oxidation tshwm sim thaum lub sij hawm forging, thiab oxide nplai tshwm nyob rau saum npoo ntawm qhov kawg forged dawb paug.
Tensile cuab yeej sim
Chav tsev kub tensile zog ntawm GR5 titanium alloy yog cuam tshuam los ntawm ntau yam, xws li alloy muaj pes tsawg leeg, grain loj, strain rate, degree ntawm deformation, thiab lwm yam.
Ua ntej ntawm tag nrho cov, txoj kab uas hla ntawm forgings feem ntau yog me dua li ntawm cov kub dov tuav. Lub deformation kub yog qis dua thaum lub sij hawm forging cua sov, thiab nws yog ib qho nyuaj rau tswj lub degree ntawm deformation thaum lub sij hawm deformation txheej txheem. Yog li ntawd, lub tensile zog ntawm forgings yog heev cuam tshuam los ntawm lub hauv paus khoom thiab cov txheej txheem forging. Nyob rau tib lub sijhawm, lub zog tensile ntawm GR5 titanium alloy forged los ntawm hydraulic xovxwm yog zoo dua li cov forged forging rauj, tab sis muaj ib qho teeb meem tseem ceeb thaum forging rauj forging - kub compression deformation.
Vim tias muaj qee qhov cua sov thiab cua txias thaum lub sij hawm forging txheej txheem ntawm hydraulic xovxwm, qhov deformation kub thiab deformation tus nqi tuaj yeem tswj tau zoo dua thaum kho cua sov, yog li ua kom cov yas ntau dua. Vim tias qhov kub thiab txias txias dua thaum lub sij hawm forging rauj forging, plasticity ntawm forgings tsis zoo li ntawm hydraulic xovxwm forgings.
Nyob rau tib lub sijhawm, forging tuaj yeem txhim kho lub zog tensile ntawm GR5 titanium alloy ntau dua rauj forging. Rau GR5 titanium alloy forgings ntawm tib qhov tshwj xeeb, lub zog tensile ntawm hydraulic xovxwm forging yog zoo dua li cov forging rauj forging; Nyob rau hauv tib lub sijhawm, forging rauj forging tuaj yeem txhim kho lub zog tensile ntawm GR5 titanium alloy dua li hydraulic xovxwm forging.
Thaum lub zog tawm los yog tib yam, tom qab forging tensile zog ntawm GR5 titanium alloy forged los ntawm hydraulic xovxwm yog zoo dua li cov GR5 titanium alloy forged los ntawm forging rauj. Qhov no yog vim hais tias hydraulic xovxwm forgings muaj me me nyob rau hauv seem kev nyuaj siab vim muaj tej yam xws li me me deformation, tsawg deformation kub, thiab qeeb deformation tus nqi; thiab tensile zog ntawm GR5 titanium alloy forged los ntawm forging rauj tom qab forging yog zoo dua li cov tom qab forging los ntawm hydraulic xovxwm.
Qhov no yog vim hais tias thaum forging nrog ib tug forging rauj, loj residual kev nyuaj siab yog generated thaum lub sij hawm forging thiab hammering txheej txheem, uas ua rau loj tensile kev nyuaj siab nyob rau hauv cov khoom, ua rau cov yas loj deformation ntawm cov khoom; Thaum lub sij hawm forging nrog hydraulic xovxwm, thaum lub sij hawm forging txheej txheem Cov hlau yog nyob rau hauv ib tug dawb-ntws lub xeev thiab tsis muaj residual kev nyuaj siab nyob rau hauv cov khoom, yog li xyuas kom meej lub degree ntawm yas deformation ntawm cov khoom.
Kev ntsuam xyuas ntawm kev ntsuas kev ua tau zoo ntawm cov tshuab
Lub zog tus nqi thiab elongation ntawm GR5 titanium alloy qauv tom qab forging nrog hydraulic xovxwm yog ntau dua li cov tom qab forging nrog forging rauj. Qhov no yog vim muaj coob tus impurity ntsiab yog tsim nyob rau hauv lub forging thaum lub sij hawm forging txheej txheem, thiab lub xub ntiag ntawm cov impurity ntsiab ua rau GR5 titanium alloy mus rau deformation. Qhov hnyav recrystallization.
Thaum lub sij hawm dov txheej txheem, vim yog lub siab dov loj, qhov kev ntxhov siab concentration tshwm sim yog pom tseeb. Qee cov ntsiab lus impurity yog extruded rau hauv sab hauv ntawm GR5 titanium alloy thiab tsim ib coarse Ti-nplua nuj theem nyob rau hauv lub grain ciam teb, uas ua rau ib tug loj npaum li cas ntawm lub zog tsim nyob rau hauv lub forging. Lub dislocations thiab vacancy muab tej yam kev mob rau ntxiv deformation ntawm GR5 titanium alloy.
Tus nqi zog ntawm GR5 titanium alloy qauv tom qab forging nrog forging rauj yog qis dua li ntawm cov qauv tom qab forging nrog hydraulic xovxwm. Qhov no yog vim muaj coob tus ntawm dislocations thiab vacancy yog tsim nyob rau hauv lub forging thaum lub forging rauj forging txheej txheem, thiab me me hais yog tsim nyob rau hauv lub grain ciam teb. Ti-nplua nuj theem ua rau pom tseeb recrystallization ntawm GR5 titanium alloy.
Nws tuaj yeem pom tias cov yam ntxwv ntawm pob txha ntawm GR5 titanium alloy qauv tom qab forging nrog forging rauj yog: feem ntau cov pob txha tawg, ntxiv los ntawm cov pob txha tawg hauv zos.
Qhov no yog vim lub siab forging siab thaum lub sij hawm forging rauj forging txheej txheem, uas ua rau ib co impurity ntsiab los ua ntxhib Ti-nplua nuj theem nyob rau hauv lub grain ciam teb. Nyob rau tib lub sijhawm, ntau qhov kev tsis sib haum xeeb thiab qhov chaw ua haujlwm raug tsim tawm thaum lub sijhawm forging rauj forging txheej txheem, ua rau pom kev hloov pauv hauv GR5 titanium alloy. recrystallization phenomenon.
Vim lub forging tsis tshua muaj kub thiab ceev forging ceev thaum lub sij hawm forging rauj forging, ib tug loj tus naj npawb ntawm tawg qhov chaw, pores thiab lwm yam tsis xws luag yog generated nyob rau hauv cov khoom, uas ua rau pom tseeb recrystallization ntawm GR5 titanium alloy.
Daim ntawv thov kev cia siab thiab kev coj ua
GR5 titanium alloy yog dav siv hauv aerospace, khoom siv kho mob, kev thauj mus los thiab lwm yam kev lag luam vim nws cov khoom zoo heev. Tshwj xeeb tshaj yog nyob rau hauv aerospace teb, GR5 titanium alloy tau dhau los ua cov khoom tseem ceeb.
Gr5 titanium alloy muaj qhov zoo ntawm qhov ceev, muaj lub zog muaj zog thiab nruj me ntsis, thiab corrosion tsis kam. Nws yog dav siv nyob rau hauv kev tsim cov yam ntxwv tseem ceeb xws li aircraft rotors, tails, fuselage reinforcement thav ntawv, thiab lub ntsiab thiab pab roj tso tsheb hlau luam.
Txij li thaum GR5 titanium alloy muaj zog dua thiab plasticity ntawm chav tsev kub, kev kho tshuaj yuav tsum tau siv thaum lub sij hawm forging los txhim kho nws cov khoom. Txawm li cas los xij, cov qauv ntawm GR5 titanium alloy yuav raug faib tsis sib npaug thaum lub sij hawm forging txheej txheem, thiab cov theem ntxhib yuav raug tsim thaum lub caij txias, uas ua rau txo qis hauv cov khoom siv ntawm cov hlau.
Txhawm rau txhim kho cov qauv forging ntawm GR5 titanium alloy, tam sim no muaj ob txoj hauv kev siv ntau: ib qho yog ua cov tshuaj kho mob ua ntej forging, xws li hydraulic xovxwm kub tuag forging; lwm qhov yog ua kom muaj kev daws teeb meem thaum lub sij hawm forging txheej txheem, xws li forging rauj forging.
Hauv kev tsim khoom tiag tiag, vim yog cov txheej txheem forging rauj forging txheej txheem cov cuab yeej, kev ua haujlwm nyuaj thiab cov nqi tsim khoom siab, hydraulic xovxwm kub tuag forging yog tam sim no cov txheej txheem siv ntau dua.
Piv nrog hydraulic xovxwm kub tuag forging, qhov zoo ntawm forging rauj forgings tau zoo heev, cov nplej yog finer thiab ntau uniform, thiab loj-diameter tuag forging tuag yuav siv tau rau ntau lawm. Txawm li cas los xij, qhov ua tau zoo ntawm forging rauj forgings yog tsawg thiab cov nqi tsim khoom yog siab. Nws tsis tau hloov tag nrho cov hydraulic xovxwm kub tuag forging txheej txheem.
Nyob rau hauv lub neej yav tom ntej, nrog rau kev loj hlob ntawm forging rauj forging technology thiab kev tshawb fawb ntawm forging technology thiab cov cuab yeej, nws muaj peev xwm kwv yees hais tias qhov ntau lawm efficiency thiab zoo ntawm forging rauj forgings yuav zoo heev.
Hauv kev tsim khoom tiag tiag, vim tias muaj cua sov ntau, lub zog thiab qhov cuam tshuam yuav raug tsim thaum lub sij hawm forging txheej txheem, nws yog ib qho tsim nyog yuav tsum kawm txog kev cuam tshuam ntawm isothermal forging ntawm cov qauv, cov khoom siv thiab lub neej txhua yam ntawm forgings los ntawm kev simulation simulation, thiab tau cov txheej txheem tsim nyog los xyuas kom meej tias forgings zoo.
Vim tias muaj kev ua haujlwm siab thiab cov khoom siv tsawg ntawm cov txheej txheem forging rauj forging, yav tom ntej peb tuaj yeem sim siv forging rauj forgings los tsim cov txheej txheem tseem ceeb hauv aerospace thiab lwm yam kev lag luam, xws li aircraft tails, lub ntsiab thiab pab roj tso tsheb hlau luam, fuselage reinforcement thav duab thiab lwm yam khoom tseem ceeb. Rau qee qhov loj forgings nyob rau hauv dav dav pej xeem teb, vim lawv loj loj, nws yog ib qho nyuaj rau tsim lawv siv cov txheej txheem forging rauj forging.
Tus sau kev xav
Nrog rau txoj kev loj hlob ntawm kuv lub teb chaws txoj kev lag luam aerospace, cov kev xav tau zoo rau titanium alloy forgings tau dhau los ua siab dua thiab siab dua, thiab cov txheej txheem forging kuj yog ib qho tseem ceeb cuam tshuam rau qhov zoo ntawm forgings.
Txawm li cas los xij, nrog kev txhim kho ntawm hydraulic presses thiab forging rauj hauv peb lub teb chaws, lawv cov ntawv thov tau dhau los ua ntau dua. Txawm li cas los xij, vim tias tus nqi ntawm forging rauj yog qhov siab thiab cov txheej txheem forging yog qhov nyuaj, feem ntau cov tuam txhab aerospace hauv tebchaws nyiam xaiv hydraulic presses kom tiav cov khoom. Kev tsim khoom, tab sis nrog kev nce ntawm cov xovxwm hydraulic, nws cov txheej txheem forging thiab zoo kuj tau zoo heev.
Nyob rau tib lub sijhawm, vim hais tias cov forging tsis tuaj yeem hloov kho raws li kev xav tau thaum lub sijhawm forging, txheej txheem forging tau hloov pauv ntau thiab hloov pauv. Txawm li cas los xij, tam sim no, Tuam Tshoj txoj kev siv tshuab hydraulic hauv tsev thiab cov khoom siv tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua rau forgings hauv thaj chaw aerospace. Yog li ntawd, txoj kev loj hlob ntawm aerospace teb yuav tsum tau forging Qhov kev thov rau technology kuj yuav nce.
cov ntaub ntawv
1. Yao Weidong: Kev tshawb fawb ntawm cov txheej txheem forging thiab microstructure zog ntawm GR5 titanium alloy forgings. "Journal of Beijing University of Aeronautics thiab Astronautics", 2017,18 (01): 1036-1037.
2. Nws Xiaolin: Kev tshawb fawb txog kev ua haujlwm kub ntawm titanium alloy forgings thaum lub sijhawm forging. "Tuam Tshoj Forging", 2015 (11): 59-60.
3. Wei Guoli: Qhov xwm txheej tam sim no thiab kev loj hlob ntawm cov titanium alloy forgings ntau lawm hauv kuv lub teb chaws. "Material Protection Technology", 2018 (05): 23-26.
