PROCESS OF PRODUCING 5XXX SERIES ALUMINUM ALLOYS WITH HIGH MECHANICAL PROPERTIES THROUGH TWIN-ROLL CASTING

摘要

The present invention be related to it is a kind of manufacture it is fine-grained, shapable aluminium alloy strips contain 5%Mg, 0-0 substantially between 0 and 5-6 (by weight), 50%Si, 0-0,60%Fe, 0-1,2%Mn, 0-0,50%Cr carries out annealing of rerolling to middle table, and to intermediate thickness material in 4 and 6,5 millimeters and cold rolling item by double-roller rolling thickness range. Material annealing of then rerolling is cold-rolled to final plate thickness, followed by final recrystallization or back annealing. Parameter, controlled a small amount of Fe, Si, Mn, Cr and magnesium and reroll causes improved sheet product more fine according to particle size with final annealing temperature, elongation and formability, age softening and better corrosion resistance are cast in conjunction with control. Homogenizing can carry out 550 °C of 4 to 15 hours periods at 420 °C and recrystallization carries out 280 °C to 375 °C 4 hours times not less than 8 and is not greater than about 2 hours.