A kind of 6xxx series aluminum alloy plate with high flanging performance and preparation method thereof

An aluminum alloy sheet and flanging technology, which is applied in metal rolling, metal rolling, metal processing equipment and other directions, can solve the problems of unalloyed internal microstructure evolution process control, incomplete intermediate annealing system, and high process cost, and achieves satisfactory results. Industrial production needs, excellent flanging performance, and the effect of improving flanging performance
CN109868398BActive Publication Date: 2021-04-06CHINALCO MATERIALS APPL RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINALCO MATERIALS APPL RES INST CO LTD
Publication Date
2021-04-06

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Abstract

The present invention provides a 6xxx series aluminum alloy sheet with high flanging performance. The aluminum alloy sheet includes the following components in terms of mass percentage: Mg: 0.1% to 1.4%; Cu: ≤ 0.35%; Mn: ≤ 0.3 %; Cr: ≤ 0.3%; Si: 0.3% to 1.8%; Fe: ≤ 0.45%, and the balance of Al, the average grain size of the finished aluminum alloy sheet along the rolling direction is less than 30 μm, and the diameter is greater than or equal to 2 μm The proportion of the number of equivalent circles of the second phase is less than 10%. The technical solution provided by the present invention effectively regulates the distribution of the second phase and the grain size in the aluminum alloy, greatly improves the flanging performance of the plate, and the obtained plate can be widely used in automobiles. 6xxx Aluminium Alloy Covers Outer Panels.
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Description

technical field

[0001] The invention relates to an aluminum alloy and a preparation method thereof, in particular to a 6xxx series aluminum alloy plate with high flanging performance and a preparation method thereof. Background technique

[0002] With the development of the automobile industry, people put forward higher requirements for the safety and lightweight of automobiles. The lightweight of the car refers to reducing the overall quality of the car as much as possible on the premise of ensuring the strength and safety performance of the car, so as to improve the power of the car, reduce fuel consumption, and reduce exhaust pollution. Aluminum alloy has become the most ideal material for automobile lightweight due to its high strength and rigidity, good impact resistance, excellent formability and high recycling rate.

[0003] 6XXX series aluminum alloys are commonly used as outer panels of automobile bodies. In addition to having good surface quality, excellent mechan...

Claims

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