Refractory simbi imhando yemidziyo yesimbi ine yakanakisa kupisa kupisa uye yakanyanya kunyungudika.
Aya marefractory elements, pamwe neakasiyana-siyana emusanganiswa uye alloys akaumbwa nawo, ane akawanda akajairika maitiro.Pamusoro penzvimbo yakakwira yekunyungudika, ivo zvakare vane yakakwira corrosion kuramba, yakakwira density, uye inochengetedza yakanakisa mechaniki simba pakupisa kwakanyanya.Aya maitiro anoreva kuti simbi dzinoramba dzinogona kushandiswa muminda yakawanda, senge girazi rinonyungudusa maelectrode, zvikamu zvechoto, zvinonangidzirwa, ma radiator uye macrucibles.Nyanzvi dzeDhipatimendi reTekinoroji reRSM dzakaunza simbi mbiri dzinowanzo shandiswa refractory uye mashandisiro adzo, anoti, molybdenum uye niobium.
molybdenum
Iyo ndiyo inonyanya kushandiswa refractory simbi uye ine yakanakisa mechaniki zvivakwa pasi pekushisa kwepamusoro, kuderera kwekuwedzera kwemafuta uye yakakwirira yekupisa conductivity.
Izvi zvivakwa zvinoreva kuti molybdenum inogona kushandiswa kugadzira zvikamu zvinogara kwenguva refu zvekupisa zvakanyanya, senge zvinotakura zvikamu, mabhureki eelevator, zvikamu zvechoto, uye forging inofa.Molybdenum inoshandiswa mumaradiator nekuda kwekukwirira kwayo kwekushisa (138 W/(m · K)).
Kuwedzera kune yayo mechanical uye thermal properties, molybdenum (2 × 107S/m), iyo inoita molybdenum kushandiswa kugadzira girazi kunyunguduka electrode.
Molybdenum inowanzosanganiswa nesimbi dzakasiyana-siyana dzekushandisa dzinoda simba rekupisa, nokuti molybdenum ichine simba guru kunyange pakupisa kwakanyanya.TZM inozivikanwa molybdenum base alloy, ine 0.08% zirconium uye 0.5% titanium.Simba reiyi alloy pa 1100 ° C rinenge rakapetwa kaviri reiyo ulloyed molybdenum, ine yakaderera thermal kuwedzera uye yakakwirira yekupisa conductivity.
niobium
Niobium, refractory simbi, ine yakakwirira ductility.Niobium ine high processability kunyangwe pakadzika tembiricha, uye ine akawanda mafomu, senge foil, ndiro uye sheet.
Sesimbi inopokana, niobium ine low density, zvinoreva kuti niobium alloys inogona kushandiswa kugadzira yakakwirira-performance refractory zvikamu zvine huremu hushoma.Naizvozvo, niobium alloys akadai C-103 anowanzo shandiswa aerospace rocket injini.
C-103 ine yakanakisa tembiricha simba uye anogona kutsungirira tembiricha kusvika 1482 ° C. Zvinonyanya kuumbwa, apo TIG (Tungsten Inert Gas) muitiro anogona kushandiswa weld nayo pasina kunyanya kukanganisa machinability kana ductility.
Pamusoro pezvo, zvichienzaniswa nesimbi dzakasiyana-siyana dzinoramba, ine yakaderera inopisa neutron cross section, ichiratidza zvinogona kuitika muchizvarwa chinotevera chekushandisa kwenyukireya.
Nguva yekutumira: Sep-29-2022