Cov yam ntxwv ntawm 7055 txhuas alloy? Qhov twg yog nws tshwj xeeb?

Lub 7055 hom tau tsim los ntawm Alcoa nyob rau xyoo 1980s thiab tam sim no muaj kev lag luam tshaj plaws siab-zog aluminium alloy. Nrog rau kev qhia ntawm 7055, Al Al Al Al Alcoa tseem tsim cov txheej txheem kev kho cua sov rau T77 tib lub sijhawm.

Cov kev tshawb fawb ntawm cov khoom siv no nyob rau hauv Suav teb tej zaum tau pib nyob rau hauv nruab nrab txog xyoo 1990. Daim ntawv thov muaj ntawm cov khoom siv no yog qhov tsawg, thiab feem ntau yog siv hauv cov tawv nqaij sab sauv, Zaj Tsov Tus khub, thiab yog li nyob rau ntawm B777 Airbus.

Cov ntaub ntawv no feem ntau tsis muaj nyob hauv kev ua lag luam, tsis zoo li 7075. Lub ntsiab tseem ceeb, zinc, magnesium, uas tseem yog qhov laj thawj tseem ceeb rau kev ua tau zoo ntawm ob. Qhov nce hauv manganese cov khoom txhais tau tias 7055 tau muaj zog corrosion tsis kam, thiab weldability piv rau 7075.

Nws yog tsim nyog teev tias daim tawv nqaij sab saud thiab cov truss ntawm C919 yog ob qho tib si 7055.