Production process for improving conductivity of aluminum alloy plate

Abstract

The invention belongs to the field of aluminum alloy manufacturing, and relates to a production process for improving the conductivity of an aluminum alloy plate. The production process comprises thefollowing steps of proportioning the following aluminum alloy raw materials of, in percentage by weight, 0.35%-0.45% of Si, not more than 0.35% of Fe, not more than 0.10% of Cu, not more than 0.03% ofMn, 0.40%-0.50% of Mg, not more than 0.03% of Cr, not more than 0.10% of Zn, 0.25%-0.30% of Re, less than or equal to 0.05% of single impurity, less than or equal to 0.15% of total impurity and the balance Al, the extruded aluminum alloy profile is subjected to solution treatment at the heating temperature of 525 + / -5 DEG C, the heat preservation time is 2 hours, the tensile strength, the yield strength and the percentage elongation after fracture of the aluminum alloy profile prepared through formula improvement and process improvement are close to those of a 6-series aluminum profile prepared through an existing process, and the conductivity reaches 57.6 MS / m or above; and the conductivity is improved by 2.2 percent points, and the performance requirements of high strength and high conductivity of a 6-series aluminum alloy plate can be met.

Description

technical field [0001] The invention belongs to the field of aluminum alloy manufacturing and relates to a production process for improving the electrical conductivity of aluminum alloy plates. Background technique [0002] 6101 is a low alloyed Al-Mg-Si series conductive aluminum alloy. Such alloys are widely used in the field of electrical conduction due to their high specific strength, good electrical conductivity, corrosion resistance and formability. In order to meet the increasingly stringent engineering requirements, conductive aluminum alloys need to have both high strength and good electrical conductivity. However, common methods of strengthening aluminum alloys, such as alloying, strain strengthening, and precipitation strengthening, etc., will increase the solid-solution atoms of alloying elements, introduce crystal defects (point defects, dislocations, grain boundaries, etc.) and produce high-density precipitation. Enhances the scattering of conduction electron...

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Problems solved by technology

[0003] In view of this, in order to solve the problem that the high strength and high conductivity of the 6-series aluminum alloy sheet prepared by the existing extrusion production process cannot be achieved at the same time, the present invention provides a production process for improving the electrical conductivity of the aluminum alloy sheet

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