Jet cast rolling high-performance 6XXX aluminum alloy thin strip and preparation method thereof

Abstract

The invention relates to a jet cast rolling high-performance 6XXX aluminum alloy thin strip and a preparation method thereof, the aluminum alloy thin 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%. Compared with an existing 6XXX aluminum alloy, the 6XXX aluminum alloy thin strip cast and rolled through the spray deposition combined with the double-roller thin strip cast-rolling technology has the advantages that the strength is higher by 30% or above, and the formability is higher by 40% or above; and compared with a steel plate for an automobile, the light weight of more than 50% is easily realized. The aluminum alloy thin strip can be widely applied to the automobile application field, such as automobile engine covering parts, fenders, automobile doors, automobile roofs, trunk lids and other parts, 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 spray cast-rolled high-performance 6XXX aluminum alloy thin 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 an industrial product at one time, which greatly simplifies the production process of aluminum alloy thin strip and shortens the production time. The production cycle makes the aluminum alloy thin strip production process more compact, more continuous, more efficient, and more environmentally friendly; at the same time, the production cost is significantly reduced, ...

AI Technical Summary

Problems solved by technology

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

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