5182-0 aluminum alloy sheet preparation method for automobiles

Abstract

The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a 5182-0 aluminum alloy sheet preparation method for automobiles. Aluminum alloy raw materials are preparedfrom the components in percentage by mass: namely 0.01-0.08% of Si, 0.15-0.30% of Fe, 0.01-0.1% of Cu, 0.10-0.30% of Mn, 4.5-5.0% of Mg, less than or equal to 0.1% of Cr, less than or equal to 0.05%of Zn, less than or equal to 0.1% of Ti, less than or equal to 0.1% of Ni, less than or equal to 0.05% of a single impurity, less than or equal to 0.15% of total, and the balance of Al. Aluminum alloycoils cold rolled to intermediate pass in cold rolling process are annealed and insulated at 320 DEG C for 2 h, wherein the annealing process of finished aluminum alloy coils is passed in a single layer mode in a continuous air cushion annealing furnace, the coils are blown to suspend in the furnace through hot air, and the problems that most parts of the local deformation of aluminum alloy sheets are cracked during the stamping deformation due to the uneven inner grain structure of aluminum alloy sheets prepared by existing aluminum alloy sheet preparation process are solved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a method for preparing a 5182-O aluminum alloy sheet for automobiles, in particular to a method for preparing a 5182-O aluminum alloy sheet for automobiles with excellent stamping performance. Background technique [0002] Traditional automotive materials are mostly processed by deep-drawn steel sheets. In recent years, with the development of automotive lightweight technology, the degree of aluminum alloying of auto parts is increasing day by day. Taking plates as an example, the application of aluminum alloy plates in automobiles is mainly divided into outer panels and inner panels. As the automobile industry pays more and more attention to the beautiful appearance and smooth lines of the car body, all of these need to be realized by stamping, which has extremely high requirements on the forming performance of the material. [0003] 5000 series aluminum allo...

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Problems solved by technology

[0006] In view of this, the present invention provides a 5182-O state aluminum alloy for automobiles in order to solve the problem that the internal grain structure of the aluminum alloy sheet prepared by the existing aluminum alloy sheet preparation process is not uniform, resulting in cracking of the aluminum alloy sheet with a large amount of local deformation. Alloy plate preparation method

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