Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1997-08-11
1999-02-02
Ryan, Patrick
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148692, 148691, 148688, 148437, 148438, 148439, 148440, 420528, 420529, 420533, 420534, C22C 2100
Patent
active
058659145
ABSTRACT:
There is claimed a lower wing structure for a commercial jet aircraft which includes a substantially unrecrystallized rolled plate member made from an aluminum alloy consisting essentially of about 3.6 to 4.0 wt. % copper, about 1.0 to 1.6 wt. % magnesium, about 0.3 to 0.7 wt. % manganese, about 0.05 to 0.25 wt. % zirconium, the balance aluminum and incidental elements and impurities. On a preferred basis, the alloy products of this invention include very low levels of both iron and silicon, typically on the order of less than 0.1 wt. % each, and more preferably about 0.05 wt. % or less iron and about 0.03 wt. % or less silicon. This alloy composition may be rolled to form lower wing skin plates and extruded or rolled to form wing box stringers therefrom.
REFERENCES:
patent: 4336075 (1982-06-01), Quist et al.
patent: 5061327 (1991-10-01), Denzer et al.
Bray Gary H.
Karabin Lynette M.
Liu John
Warren Allison S.
Aluminum Company of America
Elve M. Alexandra
Ryan Patrick
Topolosky Gary P.
LandOfFree
Method for making an aerospace structural member does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making an aerospace structural member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making an aerospace structural member will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1113285