Method for making high-performance electrophoresis aluminum alloy construction section bar
An aluminum alloy profile, high-performance technology, applied in electrophoretic plating, electrolytic coating, anodic oxidation, etc., can solve the problems of uneven electrophoretic paint film, insufficient wear resistance and corrosion resistance, and low adhesion
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Embodiment 1
[0020] Example 1: In the process of alloy smelting, by adding massive rare earth aluminum titanium boron refining modifier, adding 0.04% rare earth elements, continuously casting into rod-shaped ingots, homogenizing at 560°C for 6 hours, and hot-extruding at 430-450°C to form an aluminum alloy profiles. Then by anodic oxidation (H 2 SO 4 130~200g / L, Al 3+ ≤30g / L, temperature: 18~25℃, current density: 100~250A / m 2 , Oxidation voltage: 12-18V, oxidation time ≤ 10min), electrophoretic painting (voltage 100-180V, current 200-800A, time 1-3min, baking 180±5°C, constant temperature 30min) and other processes to produce electrophoretic aluminum alloy Building profiles. The composition and mass percentage of the alloy are: 0.50%Mg-0.43%Si-0.04%RE-0.016%Ti-0.0029%B-0.20%Fe.
Embodiment 2
[0021] Example 2: In the process of alloy smelting, by adding massive rare earth aluminum titanium boron refining modifier, adding 0.06% rare earth elements, continuous casting into rod-shaped ingots, homogenizing at 560°C for 6 hours, and hot extrusion at 430-450°C to form aluminum alloys profiles. Then by anodic oxidation (H 2 S0 4130~200g / L, Al 3+ ≤30g / L, temperature: 18~25℃, current density: 100~250A / m 2 , Oxidation voltage: 12-18V, oxidation time ≤ 10min), electrophoretic painting (voltage 100-180V, current 200-800A, time 1-3min, baking 180±5°C, constant temperature 30min) and other processes to produce electrophoretic aluminum alloy Building profiles. The composition and mass percentage of the alloy are: 0.53%Mg-0.41%Si-0.06%RE-0.012%Ti-0.0027%B-0.17%Fe.
Embodiment 3
[0022] Example 3: In the process of alloy smelting, by adding massive rare earth aluminum titanium boron refining modifier, adding 0.08% of rare earth elements, continuously casting into rod-shaped ingots, homogenizing at 560°C for 6 hours, and hot extrusion at 430-450°C to form aluminum alloys Profiles, aged at 200°C for 2 hours after air cooling and quenching. Then by anodic oxidation (H 2 S0 4 130~200g / L, Al 3+ ≤30g / L, temperature: 18~25℃, current density: 100~250A / m 2 , Oxidation voltage: 12-18V, oxidation time ≤ 10min), electrophoretic painting (voltage 100-180V, current 200-800A, time 1-3min, baking 180±5°C, constant temperature 30min) and other processes to produce electrophoretic aluminum alloy Building profiles. The composition and mass percentage of the alloy are: 0.51%Mg-0.43%Si-0.08%RE-0.019%Ti-0.0035%B-0.13%Fe.
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