Production process of aluminum alloy plate for notebook computer

Abstract

The invention discloses a production process of an aluminum alloy plate for a notebook computer. The production process comprises the following steps: controlling the chemical components of a cast ingot; uniformly heating the cast ingot, heating the cast ingot to 470-500 DEG C, and keeping the temperature for 10-50 hours; heating the cast ingot; hotly rolling raw materials; cutting; coldly rolling; straightening; sawing; and packing. The control of the chemical components of the cast ingot comprises the steps of controlling the Mg content in aluminum alloy to be 2.2-2.4%, the Cr content to be 0.15-0.20% and the use amount of a waste material in the aluminum alloy to be less than 35%, and adding a grain refiner in a casting process of the cast ingot. Compared with an existing production process, the production process has the advantages that the internal organization macro-segregation of the cast ingot is reduced, the content of impurities is effectively controlled, the production amount and size of a difficultly soluble interphase of the casting process are reduced, and the good effects in refining grains and controlling coarse compounds are achieved. The production process realizes the uniform control of large-scale cast ingot components and solves the problem that the internal organization of the aluminum alloy plate is non-uniform.

Description

technical field

[0001] The invention relates to the technical field of aluminum alloy plate production technology, in particular to an aluminum alloy plate production process for notebook computers. Background technique

[0002] Aluminum alloy is a general term for aluminum-based alloys. Aluminum alloy has the characteristics of strong quality, light weight, good heat dissipation and strong compression resistance. The aluminum alloy notebook computer shell can fully meet the requirements of high integration, thinness, miniaturization, impact resistance, electromagnetic shielding and heat dissipation. At present, the aluminum alloy sheets for high-end notebook computers are mainly 5052 alloys. The 5052 alloy is an aluminum-magnesium alloy. The content of each element in the alloy is: the content of Si (silicon) is not more than 0.25%, the content of Cu (copper) is not more than 0.10%, and the content of Mg (magnesium) is 2.2% to 2.8%. Between, the content of Zn (zinc) is no...

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