Thaum Lub Plaub Hlis 17, 7103 Cog ntawm Lub Tsev Kawm Ntawv Sixth ntawm Aerospace Science thiab Technology Group tau ua qhov kev sim ua haujlwm nrog lub tshuab ua kua oxygen kerosene tom qab lub twj tso kua mis thib ob ntawm kuv lub teb chaws tus tshiab-tiam manned launch tsheb.Qhov kev sim khiav tau pib raws li cov txheej txheem ua ntej, thiab lub cav ua haujlwm rau 10 vib nas this.
Lub cav ntawm qhov kev xeem no tau txais thawj titanium alloy loj nozzle thrust chamber tshiab tsim nyob rau hauv kuv lub teb chaws, uas zoo heev txo qhov hnyav ntawm lub cav.Tag nrho lub cav sib dhos adopts ib qho kev sib dhos inverted.Qhov kev sim no tau ua tiav qhov kev ua tau zoo ntawm titanium alloy nozzle scheme.
Nyob rau hauv lub hauv paus ntawm lub cav thrust chamber uas twb muaj lawm, tiam tshiab ntawm manned carrier foob pob ua ntxaij twj tso kua mis rear-swing kua oxygen kerosene cav tsim titanium alloy nozzles kom paub qhov zoo kev twb kev txuas ntawm cov uas twb muaj lawm thrust chamber tooj liab-steel khoom system thiab titanium-titanium. qauv, thiab ntxiv txo qhov hnyav ntawm lub cav, txhim kho qhov sib zog-rau-mas piv ntawm lub cav, thiab txhim kho lub peev xwm nqa tau zoo ntawm lub foob pob hluav taws.
Nws tau tshaj tawm tias thaum pib ntawm qhov project ntawm hom cav no, kuv lub teb chaws tsis muaj kev paub dhau los hauv kev txhim kho thiab tsim cov titanium alloy nozzles loj, thiab txhua yam yuav tsum tau "pib los ntawm kos".Tau ntsib nrog kev tshawb fawb thiab kev txhim kho nyuaj, 7103 Hoobkas tau tsim ib pab neeg tshawb fawb thiab txhim kho rau titanium alloy loj nozzles.Nyob rau hauv lub ntsej muag ntawm ib qho teeb meem kev txawj ntse tom qab lwm tus, pab neeg tshawb fawb tau ua txhua yam rau pem hauv ntej tus ntsuj plig ntawm spaceflight, nquag ua cov kev tshawb fawb, thiab sau cov tswv yim los daws cov teeb meem.Txhawm rau kom ntseeg tau tias kev txhim kho kev loj hlob ntawm titanium alloy nozzle, pab pawg tshawb fawb tau teeb tsa cov rooj sib tham tsis tu ncua los koom tes hauv lub sijhawm, kawm thiab daws cov teeb meem thiab teeb meem hauv txoj kev txhim kho.
Tom qab 5 xyoos, pab pawg tshawb fawb tau ua tiav ntau lub thev naus laus zis tseem ceeb, ua tiav kuv lub teb chaws thawj qhov loj-loj titanium alloy nozzle thrust chamber, thiab xa mus rau qhov kev xeem khiav raws li tau teem tseg.Qhov kev sim unidirectional compression ntawm TC4 titanium alloy tau ua tiav ntawm Gleeble-3800 thermal simulation simulation tshuab los kawm txog qhov kub thiab txias deformation tus cwj pwm ntawm cov hlau nyob rau hauv cov xwm txheej ntawm compression npaum li cas ntawm 50%, qhov kub ntawm 700-900 ℃ thiab a strain tus nqi ntawm 0.001-1 s-1.
Lub microstructure ntawm TC4 titanium alloy tom qab kub compression sim tau soj ntsuam los ntawm metallographic microscope, dynamic recrystallization txheej txheem ntawm TC4 titanium alloy tau kawm, thiab cov yam tseem ceeb cuam tshuam rau dynamic spheroidization ntawm TC4 titanium alloy txheej txheej txheej txheem tau soj ntsuam.Lub hom phiaj tseem ceeb tau txiav txim siab los ntawm kev haum rau kev ua haujlwm hardening tus nqi thiab ntws kev ntxhov siab nkhaus nrog cubic polynomial, thiab cov qauv spheroidization kinetic tau kawm raws li qhov kev ntxhov siab-txheej nkhaus ntawm TC4 titanium alloy.Cov txiaj ntsig tau pom tias qhov nce ntawm qhov deformation kub thiab qhov txo qis ntawm cov kab mob txhawb nqa cov txheej txheem dynamic recrystallization.
Post lub sij hawm: May-16-2022