A kind of preparation method of aluminum alloy strip material for curtain wall
A technology of aluminum alloy strips and curtain walls, applied in the direction of anodic oxidation, etc., can solve the problems of environmental pollution, easy color difference, low surface roughness, etc., achieve high production efficiency, reduce the use of hazardous substances, and achieve the effects of continuous production
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Embodiment 1
[0019] An aluminum alloy sheet and strip for curtain walls, the alloy composition of which is: Si 0.12%, Fe 0.35%, Cu 0.1%, Mn 0.05%, Mg 0.5%, Cr 0.1%, Zn 0.2%, and the rest are unavoidable impurities and Al. After smelting and batching aluminum ingots, aluminum intermediate alloy ingots, and magnesium ingots in proportion, a large slab ingot with a specification of 650×1350×8000mm is produced by using low liquid level semi-continuous casting technology, and the ingot is sawn from head to tail to 400mm and up and down After the surface is milled for 20mm, it is placed in a heating furnace for uniform annealing. The annealing condition is 500°C for 10 hours, and then hot-rolled to obtain a 5.0mm hot-rolled billet. The billet is cold-rolled twice to obtain a surface roughness Ra. The product is 0.2μm and 3.0mm thick, and after heat treatment and alkali cleaning, the product finally obtains a finished coil with a surface roughness Ra of 0.13~0.15μm at any position and a product y...
Embodiment 2
[0022] An aluminum alloy plate and strip for curtain wall, its alloy composition is: Si 0.3%, Fe 0.7%, Cu 0.05%, Mn 0.2%, Mg 1.1%, Cr 0.02%, Zn 0.11%, and the rest are unavoidable impurities and Al. After smelting and batching aluminum ingots, aluminum intermediate alloy ingots and magnesium ingots in proportion, a large slab ingot with a specification of 520×1700×6000mm is produced by using low liquid level semi-continuous casting technology. After the surface is milled for 15 mm, it is placed in a heating furnace for uniform annealing. The annealing condition is 450 ° C for 20 hours, and then hot-rolled to obtain a 10.0 mm hot-rolled billet. The billet is cold-rolled twice to obtain a surface roughness Ra The product is 0.15μm and the thickness is 6.0mm. After the product is subsequently heat-treated and alkali-washed, a finished coil with a surface roughness Ra of 0.06-0.08μm at any position and a product yield strength of 137MPa is finally obtained.
[0023] On the anodiz...
Embodiment 3
[0025] An aluminum alloy sheet and strip for curtain walls, the alloy composition of which is: Si 0.05%, Fe 0.08%, Cu 0.02%, Mn 0.08%, Mg 0.9%, Cr 0.03%, Zn 0.05%, and the rest are unavoidable impurities and Al. After smelting and batching aluminum ingots, aluminum intermediate alloy ingots and magnesium ingots in proportion, a large slab ingot with a specification of 560×1400×3600mm is produced by using low liquid level semi-continuous casting technology. After the surface is milled for 10mm, it is placed in a heating furnace for uniform annealing. The annealing condition is 530°C for 4 hours, and then hot-rolled to obtain a 5.0mm hot-rolled billet. The billet is cold-rolled three times to obtain a surface roughness Ra. It is a product with a thickness of 0.13μm and a thickness of 1.5mm. After the product is subsequently heat-treated and alkali-washed, a finished coil with a surface roughness Ra of 0.10-0.12μm at any position and a product yield strength of 129MPa is finally ...
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