Ngomhla ziyi-17 kuMbasa, i-7103 Plant yeSixth Institute of Aerospace Science and Technology Group yenze ukuhlola ngenjini kaphalafini enguketshezi ye-oksijini ngemuva kwephampu yesibili yemoto yokwethulwa komuntu yesizukulwane esisha yezwe lami. Ukugijima kokuhlolwa kwaqalwa ngokwenqubo enqunywe kusengaphambili, futhi injini yasebenza imizuzwana engu-10.
Injini yalolu hlelo lokuhlola isebenzisa i-titanium alloy yokuqala ye-nozzle thrust chamber esanda kuthuthukiswa ezweni lami, enciphisa kakhulu isisindo senjini. Yonke inhlanganisela yenjini isebenzisa isikimu sokuhlanganisa esihlanekezelwe. Lokhu kuhlolwa kokuhlola kuqinisekise ngempumelelo ukuba nokwenzeka kwesikimu se-titanium alloy nozzle.
Ngokwesisekelo segumbi lokuphonswa kwenjini elikhona, isizukulwane esisha se-rocket carriers yesibili futha i-rear-swing liquid injini kaphalafini yakha imibhobho ye-titanium alloy ukuze ibone ukuxhumana okusebenzayo phakathi kwesistimu ye-copper-steel ekhona kanye ne-titanium-titanium. ukwakheka, nokuqhubeka Yehlisa isisindo senjini, ithuthukise isilinganiso se-thrust-to-mass yenjini, futhi ithuthukise umthamo osebenzayo wokuthwala irokhethi.
Kubikwa ukuthi ekuqaleni kwephrojekthi yalolu hlobo lwenjini, izwe lami alinaso isipiliyoni ekuthuthukisweni nasekukhiqizeni ama-nozzles amakhulu we-titanium alloy, futhi konke kufanele "kuqalwe kusukela ekuqaleni". Ibhekene nomsebenzi onzima wocwaningo nokuthuthukiswa, ifektri i-7103 yasungula ithimba locwaningo nokuthuthukiswa kwamabhomu amakhulu e-titanium alloy. Lapho libhekene nenkinga yezobuchwepheshe ngemva kwenye, ithimba labacwaningi lawuqhubeza ngokugcwele umoya wokundiza emkhathini, lenza ngenkuthalo ucwaningo lobuchwepheshe, futhi laqoqa ukuhlakanipha ukuze kuxazululwe izinkinga. Ukuze kuqinisekiswe inqubekelaphambili yentuthuko ye-titanium alloy nozzle, ithimba labacwaningi lihlala lihlela imihlangano evamile ukuze lixhumanise ngesikhathi, lifunde futhi libhekane nezinkinga nobunzima enqubweni yokuthuthukiswa.
Ngemva kweminyaka emi-5, ithimba labacwaningi linqobe ngokulandelanayo inani lobuchwepheshe obubalulekile, lathuthukisa ngempumelelo indawo yokuqala yezwe yami yosayizi omkhulu we-titanium alloy nozzle thrust chamber, futhi layiletha esivivinyweni njengoba bekuhleliwe. Ukuhlolwa kokucindezelwa kwe-unidirectional kwe-TC4 titanium alloy kwenziwa emshinini wokuhlola ukulingisa okushisayo we-Gleeble-3800 ukuze kufundwe izinga lokushisa eliphezulu lokuguquka kwe-alloy ngaphansi kwezimo zenani lokucindezelwa elingu-50%, izinga lokushisa elingu-700-900 ℃ kanye isilinganiso sohlobo lwe-0.001-1 s-1.
I-microstructure ye-TC4 titanium alloy ngemva kokuhlolwa kokucindezelwa kwezinga lokushisa eliphezulu kwabonwa ngesibonakhulu se-metallographic, inqubo ye-dynamic recrystallization ye-TC4 titanium alloy yacwaningwa, futhi izici ezithinta i-dynamic spheroidization ye-TC4 titanium alloy layered structure zahlaziywa. Uhlobo olubucayi lwanqunywa ngokufaka izinga lokuqina komsebenzi kanye nejika lokucindezeleka lokugeleza nge-cubic polynomial, futhi imodeli ye-spheroidization kinetic yacwaningwa ngokuya ngejika le-stress-strain le-TC4 titanium alloy. Imiphumela ibonisa ukuthi ukwanda kwezinga lokushisa lokuguquguquka kanye nokuncipha kwezinga lokucindezeleka kukhuthaza inqubo yokuvuselela kabusha.
Isikhathi sokuthumela: May-16-2022