Production process of 6061 aluminum alloy stretch-bending profile

Abstract

The invention discloses a production process of a 6061 aluminum alloy stretch-bending profile. The production process comprises the following steps of step A, the mass percentage of various componentsof the 6061 aluminum alloy material is as follows: 0.75 to 0.95% of Mg, 0.45 to 0.63% of Si, 0.2 to 0.35% of Fe, 0.1 to 0.2% of Mn, 0.2 to 0.25% of Cr, 0.1 to 0.24% of Cu, 0.1 to 0.24% of Zn, 0.2 to0.3% of Pb, 0.2 to 0.35% of Bi, 0.3 to 0.4% of Zr, 0.2 to 0.3% of Ti and the reset is AL; step B, cleaning a melting furnace and washing the furnace with pure aluminum ingots, putting the aluminum ingots into the melting furnace to heat and melt, and adding Si, Fe, Mn, Gr, Zn, Pb, Bi, Zr and Ti to the melting furnace and mixing and stirring uniformly; and step C, adding Cu after melting, completely melting furnace burdens in the melting furnace and reaching 730 to 750 DEG C, and adding Mg ingots. The production process of the 6061 aluminum alloy stretch-bending profile provided by the invention has the advantages of being good in corrosion resistance, wide in use range, long in service life, easy in cutting and processing, and solves the problems that an existing aluminum alloy tensile profile is low in strength, easy to break in the bending process, low in corrosion resistance, easy to cause corrosion of environmental factors during use, large in use limitation, the own service life is reduced, cutting is not easy in the processing process and the cutting difficulty is large.

Description

technical field [0001] The invention relates to the technical field of production of aluminum alloy profiles, in particular to a production process of 6061 aluminum alloy stretch-bending profiles. 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 stretch-be...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a production process for 6061 aluminum alloy stretch-bending profiles, which has the advantages of high strength, not easy to break, good corrosion resistance, wide application range, long service life, and easy cutting and processing, and solves the problem of existing aluminum alloys. Stretch-bending profiles have low strength, are easy to break during stretch-bending, and have low corrosion resistance. They are easy to cause corrosion by environmental factors during use, and their use is limited, which reduces their service life. It is not easy to cut during processing, and cutting is difficult. The problem