Production method of 6061 aluminum alloy plate with medium thickness

Abstract

The invention discloses a production method of a 6061 aluminum alloy plate with the medium thickness. The production method comprises the following steps: A, materials in percentage by mass: 0.75-0.95% of Mg, 0.45-0.63% of Si, 0.2-0.35% of Fe, 0.1-0.2% of Mn, 0.2-0.25% of Cr, 0.1-0.24% of Cu, 0.1-0.24% of Zn, 0.3-0.4% of Zr, 0.2-0.3% of Ti and the balance of AL are prepared; and B, an aluminum ingot is placed into a smelting furnace to be heated and molten, the heating temperature is 500-520 DEG C, the heating time is 18-20 h, after the aluminum ingot is completely molten, Mg, Si, Fe, Mn, Gr,Cu, Zn, Zr and Ti are sequentially added, in the adding process, electromagnetic stirring is started, the heating temperature is kept at 740-760 DEG C, and the heating time is 12-16 h. The productionmethod has the advantages that the 6061 aluminum alloy plate is high in strength, not prone to deforming in the using process, good in corrosion resistance, wide in using range, good in surface smoothness and high in beauty, and thus the problems that an existing aluminum alloy thick plate is low in strength and prone to deforming in the using process and meanwhile has difficulty with the high corrosion resistance, the using environment is limited, the surface smoothness of the existing aluminum alloy thick plate is difficult to master, and the beauty of the existing aluminum alloy thick plateis lowered are solved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy plates, in particular to a production method of 6061 medium-thick aluminum alloy plates. Background technique [0002] Aluminum alloy materials are widely used in various fields due to their excellent characteristics such as beautiful appearance, corrosion resistance, easy forming, and low density. Domestic small cars and electric buses exported to Europe gradually use aluminum alloy materials. However, aluminum alloy profiles are bent in the later stage. It is difficult to guarantee the surface quality in the molding process, and the surface is prone to orange peel, rebound, necking, and even cracking, which leads to a high scrap rate of finished products and low production efficiency, which eventually leads to increased production costs and longer production cycles, and affects supply levels. and customer satisfaction. [0003] The existing aluminum alloy thick plate has the problem of l...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a production method of 6061 medium-thick aluminum alloy plate, which has the advantages of high strength, not easy to deform during use, good corrosion resistance, wide application range, good surface smoothness and high aesthetics, and solves the problem of Existing aluminum alloy thick plates have low strength and are easily deformed during use. At the same time, it is difficult to have strong corrosion resistance. The use environment is limited, and its surface smoothness is difficult to grasp, which reduces its own aesthetics.