Thin-strip continuous casting high-performance 6XXX aluminum alloy plate strip and preparation method thereof

Abstract

The invention discloses a thin-strip continuous casting high-performance 6XXX aluminum alloy plate strip and a preparation method thereof, the aluminum alloy plate strip comprises the following components in percentage by mass: 0.5-1.5% of Si, 0.1-2.0% of Mg, 0.1-1.0% of Fe, 0.05-0.5% of Mn, 0.02-0.2% of Cu, 0.01-0.08% of Ti, 0.001-0.008% of B and the balance of Al and other inevitable impurities, the content of a single impurity is less than or equal to 0.05%, and the content of total impurities is less than or equal to 0.15%. According to the preparation method, semisolid treatment is combined with a twin-roll thin-strip continuous casting process, and compared with an existing 6XXX aluminum alloy, the strength of the prepared 6XXX aluminum alloy plate strip is improved by 20% or above, and the formability is improved by 30% or above; and compared with a steel plate for an automobile, the weight is reduced by more than 40% easily. The produced aluminum alloy plate strip is a second-generation ABS aluminum alloy product, is widely applied to the field of automobiles, particularly can be used for automobile engine covering parts and can also be used for parts such as fenders, automobile doors, automobile roofs and trunk lids, and a wide space is provided for the automobile industry in the aspects of light weight, energy consumption reduction and fuel economy improvement.

Description

technical field [0001] The invention relates to the field of aluminum alloy preparation, in particular to a strip continuous casting high-performance 6XXX aluminum alloy strip and a preparation method thereof. Background technique [0002] The thin strip continuous casting technology is a cutting-edge technology in the field of metallurgy today. The twin-roll thin strip continuous casting technology was first proposed by Henry Bessemer in 1865 (US Patent: 49053). Thin strip continuous casting integrates continuous casting, rolling, and even heat treatment into one, so that the produced thin strip can be rolled into industrial products at one time, which greatly simplifies the production process of aluminum alloy strips and shortens the production time. The production cycle makes the production process of aluminum alloy strip more compact, more continuous, more efficient, and more environmentally friendly; at the same time, the production cost is significantly reduced, and th...

AI Technical Summary

Problems solved by technology

However, these equipments are still unable to produce high-end 6XXX series aluminum alloy panel strip products for automobiles

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