Phunziro la titaniyamu aluminides turbocharger kuponyera

Ndiwogwiritsidwa ntchito kwambiri ma aloyi a titaniyamu m'mafakitale opangira mafakitale chifukwa cha kuchuluka kwawo kolemera kwambiri, kukana kuphulika, komanso kukana kwamphamvu kwa dzimbiri. Kuchuluka kwa makampani amakonda kugwiritsa ntchito Titaniyamu aloyi TC11 m'malo TC4 kupanga impellers ndi masamba, chifukwa bwino kuyaka kukana katundu ndi luso ntchito kutentha kwa nthawi yaitali. Ma aloyi a Titaniyamu ndi zida zakale zovuta kupanga makina chifukwa champhamvu zawo zakukhazikika zomwe zimasungidwa kutentha kwambiri komanso kutsika kwamafuta komwe kumabweretsa kutentha kwambiri. Kwa zigawo zina za injini ya aero, monga ma impellers, omwe ali ndi malo opotoka, zimakhala zovuta kukwaniritsa zofunikira zapamwamba komanso zapamwamba zapamtunda pogwiritsa ntchito mphero.

Mu injini yoyaka mkati yamagalimoto, rotor ya turbocharger yathandizira kukulitsa mphamvu zamagetsi komanso kuchepetsa mafuta, chifukwa mpweya wotulutsa mpweya umathandizira kutulutsa bwino popanda kugwiritsa ntchito mafuta owonjezera. Komabe, rotor ya turbocharger ili ndi vuto lowopsa lotchedwa ''turbo-lag'' zomwe zimachedwetsa kukhazikika kwa turbocharger pansi pa 2000 rpm. Titaniyamu aluminide akhoza kuchepetsa kulemera kwa theka la ochiritsira turbocharger. Kupatula apo, ma aloyi a TiAl ali ndi kuphatikizika kwa kachulukidwe otsika, mphamvu zenizeni zenizeni, zida zabwino zamakina, komanso kukana kutentha. Chifukwa chake, ma alloys a TiAl amatha kuthetsa vuto la turbo-lag. Mpaka pano, popanga turbocharger, zitsulo za ufa ndi njira zoponya zidaphatikizidwa. Komabe, ndizovuta kugwiritsa ntchito njira ya zitsulo za ufa popanga turbocharger, chifukwa chosamveka bwino komanso chowotcherera.

Malinga ndi njira yotsika mtengo, kuyika ndalama kumatha kuonedwa ngati ukadaulo waukadaulo wa TiAl alloys. Komabe, turbocharger ali onse kupindika ndi woonda khoma mbali, ndipo palibe mfundo yoyenera monga castability ndi fluidity ndi nkhungu kutentha, kutentha kutentha ndi mphamvu centrifugal. Ma modeling of casting amapereka njira yamphamvu komanso yotsika mtengo yophunzirira momwe zinthu zosiyanasiyana zimagwirira ntchito.

Buku

Loria EA. Gamma titanium aluminides ngati zinthu zomwe zingapangidwe. Intermetallics 2000;8:1339e45.