Ke tšebeliso e pharaletseng ea li-alloys tsa titanium masimong a tlhahiso ea liindasteri ka lebaka la tekanyo ea tsona e ikhethang ea boima ba 'mele, ho hanyetsa ha fracture, le ho hanyetsa ho hoholo ha kutu. Lik'hamphani tse ntseng li eketseha li khetha ho sebelisa motsoako oa Titanium TC11 sebakeng sa TC4 ho etsa li-impellers le li-blades, ka lebaka la thepa e ntle ea ho hanyetsa mollo le bokhoni ba ho sebetsa mocheso o phahameng ka nako e telele. Li-alloys tsa Titanium ke lisebelisoa tsa khale tseo ho leng thata ho li etsa mochining bakeng sa matla a tsona a tlhaho a bolokiloeng mochesong o phahameng le mocheso o tlase oa mocheso o lebisang mochesong o phahameng oa ho itšeha. Bakeng sa likarolo tse ling tsa enjine ea moea, joalo ka li-impeller, tse nang le bokaholimo bo sothehileng, ho thata ho khotsofatsa litlhoko tsa boleng bo holimo le bo holimo ka ho sebelisa ts'ebetso ea ho sila feela.
Ka har'a enjene e tukang ka har'a koloi, rotor ea turbocharger e kentse letsoho ho eketseng matla a matla le phokotso ea mafura, hobane khase ea ho tima e khothalletsa ts'ebetso e ntle ntle le tšebeliso e eketsehileng ea mafura. Leha ho le joalo, rotor ea turbocharger e na le tšitiso e bolaeang e bitsoang ''turbo-lag'' e liehisang ts'ebetso e tsitsitseng ea turbocharger tlasa 2000 rpm. Titanium aluminide e ka fokotsa boima ba 'mele ho isa halofo ea turbocharger e tloaelehileng. Ntle le moo, li-alloys tsa TiAl li na le motsoako oa sekhahla se tlase, matla a khethehileng a phahameng, thepa e ntle ea mochini le ho hanyetsa mocheso. Ka hona, li-alloys tsa TiAl li ka felisa bothata ba turbo-lag. Ho fihlela joale, bakeng sa tlhahiso ea turbocharger, metallurgy ea phofo le mokhoa oa ho lahla li kenyellelitsoe. Leha ho le joalo, ho thata ho kenya ts'ebetso ea phofo ea metallurgy ho tlhahiso ea turbocharger, ka lebaka la ho se utloahale hantle le ho cheseha ha eona.
Ho latela pono ea ts'ebetso e bolokang chelete e ngata, ho etsa matsete ho ka nkuoa e le theknoloji ea sebopeho sa moruo bakeng sa li-alloys tsa TiAl. Leha ho le joalo, turbocharger e na le likarolo tse peli tse kobehileng le tse tšesaane tsa lebota, 'me ha ho na tlhahisoleseling e nepahetseng joalo ka castability le fluidity e nang le mocheso oa hlobo, mocheso o qhibilihang le matla a centrifugal. Mokhoa oa ho etsa mohlala o fana ka mokhoa o matla le o theko e boima oa ho ithuta ka katleho ea mekhahlelo e fapaneng ea ho lahla.
Referense
Loria EA. Gamma titanium aluminides e le lisebelisoa tse lebelletsoeng tsa meralo. Intermetallics 2000;8:1339e45.
Nako ea poso: May-30-2022