Ke aʻo ʻana i ka hoʻolei ʻana i ka titanium aluminides turbocharger

He mea hoʻohana nui ia i nā alloys titanium i nā ʻoihana hana ʻoihana ma muli o ko lākou kūlana kiʻekiʻe kiʻekiʻe-kaumaha, ka haki ʻana, a me ke kūpaʻa kiʻekiʻe i ka corrosion. ʻOi aku ka nui o nā ʻoihana e hoʻohana i ka Titanium alloy TC11 ma kahi o TC4 i ka hana ʻana i nā impellers a me nā lau, ma muli o ka maikaʻi o ka waiwai kūpaʻa ʻana a me ka hiki ke hana i ka wela kiʻekiʻe no ka manawa lōʻihi. ʻO nā alloys Titanium he mau mea paʻakikī i ka mīkini maʻamau no ko lākou ikaika kiʻekiʻe i mālama ʻia ma ka wela kiʻekiʻe a me ka conductivity thermal haʻahaʻa e alakaʻi ana i nā mahana ʻoki kiʻekiʻe. No kekahi mau ʻāpana aero-engine, e like me nā impellers, i wili i nā ʻili, paʻakikī ke hoʻokō i nā koi o ka ʻili kiʻekiʻe a kiʻekiʻe ma o ka hoʻohana ʻana i ka hana wili.

I loko o kahi ʻenekini hoʻoheheʻe kūloko o loko, ua kōkua ka rotor turbocharger i ka hoʻonui ʻana i ka pono o ka mana a me ka hoʻemi ʻana i ka wahie, no ka mea, ʻo ke kinoea hoʻoheheʻe e hoʻoikaika i ka pono o ka lawe ʻana me ka ʻole o ka hoʻohana ʻana i ka wahie. Eia naʻe, loaʻa i ka rotor turbocharger kahi drawback make i kapa ʻia ʻo "turbo-lag" e hoʻopaneʻe i ka hana paʻa o ka turbocharger ma lalo o 2000 rpm. Hiki i ka Titanium aluminides ke hoʻemi i ke kaumaha i ka hapalua o ka turbocharger maʻamau. Ma waho aʻe o kēia, ua hui pū ʻia nā alloys TiAl me ka haʻahaʻa haʻahaʻa, ka ikaika kikoʻī kiʻekiʻe, nā waiwai mechanical maikaʻi loa, a me ka pale wela. No laila, hiki i nā huila TiAl ke hoʻopau i ka pilikia turbo-lag. A hiki i kēia manawa, no ka hana ʻana i ka turbocharger, ua hoʻohui ʻia ka pauka metallurgy a me ka hoʻolei ʻana. Eia nō naʻe, paʻakikī ka hoʻopili ʻana i ke kaʻina hana metallurgy pauka i ka hana turbocharger, ma muli o kona maikaʻi ʻole a me ka weldability.

Mai ka manaʻo o ke kaʻina hana kumu kūʻai, hiki ke manaʻo ʻia ka hoʻolei kālā ʻana ma ke ʻano he ʻenehana hoʻokele waiwai no nā alloys TiAl. Eia naʻe, loaʻa i ka turbocharger ka curvature a me nā ʻāpana pā lahilahi, a ʻaʻohe ʻike kūpono e like me ka castability a me ka fluidity me ka mahana wela, ka wela heheʻe a me ka ikaika centrifugal. Hāʻawi ka hoʻohālike o ka hoʻoheheʻe ʻana i kahi ala ikaika a maikaʻi hoʻi e aʻo ai i ka pono o nā ʻāpana hoʻolei like ʻole.

Kuhikuhi

Loria EA. ʻO Gamma titanium aluminides ma ke ʻano he mea kūkulu hale. Intermetallics 2000;8:1339e45.