Izimpumelelo ezinkulu zemboni ye-aerospace azihlukaniseki ekuthuthukisweni nasekuthuthukisweni kobuchwepheshe bezinto ze-aerospace.Ukuphakama okuphezulu, isivinini esikhulu kanye nokuhamba kahle kwezindiza zempi kudinga ukuthi izinto zesakhiwo sendiza kufanele ziqinisekise amandla anele kanye nezidingo zokuqina.Izinto zenjini zidinga ukuhlangabezana nesidingo sokumelana nokushisa okuphezulu, ama-alloys okushisa aphezulu, izinto ezihlanganisiwe ze-ceramic ziyizinto eziyinhloko.

Insimbi evamile ithambeka ngaphezu kuka-300 ℃, iyenze ingafaneleki indawo enezinga lokushisa eliphezulu.Ekuphishekeleni ukusebenza kahle kokuguqulwa kwamandla, amazinga okushisa aphezulu naphezulu okusebenza ayadingeka emkhakheni wamandla enjini yokushisa.Ama-alloys asezingeni eliphezulu athuthukisiwe ukuze asebenze ezinzile emazingeni okushisa angaphezu kuka-600 ℃, futhi ubuchwepheshe buyaqhubeka nokuvela.

Ama-alloys aphezulu okushisa ayisihluthulelo sezinjini ze-aerospace, ezihlukaniswe nge-iron-based high-temperature alloys, i-nickel esekelwe yizici eziyinhloko ze-alloy.Ama-alloys asezingeni eliphezulu asetshenziswa ezinjinini ze-aero-aero-selokhu zasungulwa, futhi ziyizinto ezibalulekile ekwakhiweni kwezinjini zasemkhathini.Izinga lokusebenza injini incike kakhulu izinga ukusebenza izinga lokushisa eliphezulu ingxubevange materials.Ezinjinini zesimanje ze-aero-injini, inani lezinto ezisezingeni eliphezulu ze-alloy zenza amaphesenti angama-40-60 esisindo senjini, futhi lisetshenziselwa ikakhulukazi izingxenye ezine eziyinhloko zokugcina ukushisa: amakamelo omlilo, iziqondiso, ama-turbine blades kanye ama-turbine discs, futhi ngaphezu kwalokho, isetshenziselwa izingxenye ezinjengamamagazini, izindandatho, izindlu zokushaja ezivuthayo kanye nemibhobho yomsila.

(Ingxenye ebomvu yomdwebo ibonisa ama-alloys okushisa aphezulu)

Ama-alloys asuselwa ku-nickel asezingeni eliphezulu ngokuvamile isebenza ku-600 ℃ ngaphezu kwezimo zokucindezeleka okuthile, ayinayo kuphela i-oxidation ephezulu yezinga lokushisa nokumelana nokugqwala, futhi inamandla aphezulu okushisa, amandla okukhasa kanye namandla okubekezela, kanye nokumelana nokukhathala okuhle.Ikakhulukazi esetshenziswa emkhakheni we-aerospace kanye nezindiza ngaphansi kwezimo eziphezulu zokushisa, izingxenye zesakhiwo, njengama-blade enjini yendiza, ama-discs e-turbine, amakamelo omlilo nokunye.Ama-alloys asekelwe ku-nickel asezingeni eliphezulu angahlukaniswa abe ama-alloys okushisa aphezulu akhubazekile, ama-alloys asezingeni eliphezulu kanye nama-alloys amasha asezingeni eliphezulu ngokuya ngenqubo yokukhiqiza.

Ngokushisa kwe-alloy ukumelana nokushisa kuphezulu futhi kuphakeme, izakhi zokuqinisa ku-alloy ziyanda, ukwakheka okuyinkimbinkimbi, okuholela kwezinye izingxube zingasetshenziswa kuphela esimweni sokuphonswa, azikwazi ukuguqulwa kokucubungula okushisayo.Ngaphezu kwalokho, ukwanda kwezakhi ze-alloying kwenza ama-alloys asekelwe ku-nickel aqine ngokuhlukaniswa okukhulu kwezingxenye, okuholela ekungafanini kwenhlangano nezakhiwo.Ukusetshenziswa kwenqubo ye-powder metallurgy ukukhiqiza ama-alloys okushisa aphezulu, kungaxazulula izinkinga ezingenhla.Ngenxa yezinhlayiya ezincane zempushana, ijubane lokupholisa impushana, ukuqeda ukuhlukaniswa, ukusebenza okuthuthukisiwe okushisayo, ingxubevange yokuqala yokuphonsa ibe yi-deformation esebenzayo yama-alloys aphezulu okushisa, amandla okukhiqiza kanye nezakhiwo zokukhathala kuyathuthukiswa, i-powder high-temperature alloy ukuze kukhiqizwe ingxubevange ephezulu. -amandla ama-alloys akhiqize indlela entsha.