Metal treatment – Compositions – Heat treating
Patent
1983-09-30
1984-11-20
Rutledge, L. Dewayne
Metal treatment
Compositions
Heat treating
148 115A, 148437, 420550, C22F 104
Patent
active
044837194
ABSTRACT:
A process for the preparation of a rolled aluminum product, containing iron as the predominant alloy element, which has a grain size of less than 10 .mu.m after annealing to at least 250.degree. C., in which an alloy consisting of 0.8 to 1.5% iron, up to 0.5% by weight of each of Si and Mn, the sum of Si and Mn being between 0.2 and 0.8%, up to 0.3% by weight of any other component, the total of other components being no more than 0.8% by weight, and the remainder being aluminum, is casted at a solidification rate of 2.5 to 25 cm/min, the hot plate is cooled to less than 120.degree. C. at a rate of less than 0.5 K/sec and is then cold rolled with a thickness decrease of at least 75% without intermediate annealing, and the final annealing temperature does not exceed 380.degree. C.
REFERENCES:
patent: 3266945 (1966-08-01), Helling et al.
patent: 3304208 (1967-02-01), Jager
patent: 3397044 (1968-08-01), Bylund
patent: 3938991 (1976-02-01), Sperry et al.
patent: 3989548 (1976-11-01), Morris
patent: 4028141 (1977-06-01), Chia et al.
patent: 4126487 (1978-11-01), Morris et al.
patent: 4138275 (1979-02-01), Yokota et al.
Furrer Peter
Timm Jurgen
Wehner Frank
McDowell Robert L.
Rutledge L. Dewayne
Swiss Aluminium Ltd.
LandOfFree
Process for preparing fine-grained rolled aluminum products does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for preparing fine-grained rolled aluminum products, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing fine-grained rolled aluminum products will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2188015