Method for making high-performance electrophoresis aluminum alloy construction section bar

Abstract

The invention discloses an electrophoretic aluminum alloy building proximate matter with high performance and a preparation method thereof, and belongs to the technical field of aluminum alloy application. The electrophoretic aluminum alloy building proximate matter consists of following ingredients by mass: 0.5 to 0.54 percent of Mg, 0.4 to 0.44 percent of Si, 0.04 to 0.08 percent of RE, 0.01 to0.02 percent of Ti, 0.002 to 0.004 percent of B, 0 to 0.2 percent of Fe and remaining aluminum. The preparation method of the electrophoretic aluminum alloy building proximate matter consists of following steps: a misch metal ingot, an alloy of Al, Ti and B, and a pure aluminum ingot are smelted into a refining and modifying agent of RE, Al, Ti and B; the refining and modifying agent is added during an alloy smelting process and cast into an aluminum rod; the electrophoretic proximate matter with high performance is prepared by techniques of squeeze aging and oxidizing electrophoresis, etc. Byutilizing rare earth to subdivide second-phase particles, electrophoretic paint films of the proximate matter that are obtained by improving surface processing performance have higher uniformity, adhesive attraction, wear resistance, corrosion resistance and large film thickness than common proximate matters, and can be widely used for aluminum alloy doors and windows of buildings and curtain walls.

Description

Technical field:

[0001] The invention relates to a method for preparing aluminum alloy building profiles, in particular to a method for preparing high-performance electrophoretic aluminum alloy profiles. Background technique:

[0002] The application of rare earth in aluminum alloy profiles is very extensive, and there are many studies. Patent Publication No. CN1332259A discloses a rare-earth aluminum alloy rod for extruded profiles, which is to make the aluminum alloy smelt at 670-800° C., and add a mixed rare-earth alloy content of 0.05-0.35%. This kind of rare earth aluminum alloy rod can be made into various profiles for decorative parts and structural parts after extrusion. This profile has good corrosion resistance and better welding performance than ordinary aluminum alloy profiles, and further improves the mechanical properties of the profiles. Strength, can be widely used in various structural parts. The patent publication number is CN1171453A, which discloses a h...

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