Aluminum  Curtain Wall Profiles -50 series

Reshaping the benchmark of building facades with full chain innovation

——A systematic breakthrough from aluminum alloy raw materials, fluorocarbon spraying to aluminum profile structures

1、 Aluminum profile curtain wall 50 series: defining a new height in the industry

Aluminum profile curtain wall, as the core carrier of modern building facades, is the ultimate fusion of structural performance and aesthetic expression. The 50 series aluminum profile curtain wall is centered around a standardized 50mm main frame. Through the innovation of aluminum alloy raw materials, optimization of multi cavity aluminum profile structures, and upgrading of fluorocarbon spraying technology, the performance boundary of the curtain wall system has been redefined. As a lightweight solution with aluminum alloy as the core substrate, it has a tensile strength of over 160MPa and a density only one-third of steel, perfectly balancing the load limitation and wind pressure resistance requirements of high-rise buildings. According to the Global Curtain Wall Technology Development Report, the application coverage of 50 series products in buildings over 200 meters exceeds 45%, becoming a phenomenal product in the field of aluminum profile curtain walls.

2、 Full dimensional technical analysis: chain innovation from raw materials to fluorocarbon spraying

1. Aluminum alloy raw materials: ultimate control of quality foundation

The core competitiveness of the 50 series aluminum profile curtain wall begins with the rigorous screening of aluminum alloy raw materials:

-Accurate control of alloy composition: 6063-T5/T6 aluminum alloy is used, with magnesium (0.45%~0.9%) and silicon (0.2%~0.6%) content dynamically adjusted through spectral analysis to ensure that the extruded aluminum profile has both ductility and mechanical strength.

-Innovation of casting process: Through homogenization treatment (temperature: 580 ℃± 10 ℃) and online quenching technology (cooling rate ≥ 200 ℃/min), the internal grain boundary segregation of aluminum alloy is eliminated, and the hardness fluctuation of curtain wall profiles is ≤ 3HV, eliminating performance dispersion from the source.

2. Aluminum profile structure: a mechanical revolution in multi cavity design

To cope with extreme wind pressure (≥ 2.5kPa) and earthquake loads, the 50 series curtain wall adopts a "three cavity four reinforcement" aluminum profile structure:

-Main cavity partition: The 50mm frame is divided into three independent chambers, and the thermal conductivity of the air layer is as low as 0.026W/(m · K), which is 25% more energy-efficient than traditional aluminum curtain walls.

-Reinforcement layout: The thickness of transverse reinforcement bars is ≥ 2.5mm, and the density of longitudinal shear bars is increased to 4 bars/m, making the bending stiffness of the curtain wall system reach 18000N · mm ²/mm, meeting the deformation limit (L/250) of super high-rise buildings over 300 meters.

3. Fluorocarbon spraying: Technological armor for the weather resistance of curtain walls

Fluorocarbon spray coating (PVDF) is the core process for surface protection of 50 series aluminum profile curtain walls:

-Three layer spraying system: primer (epoxy zinc yellow, 5 μ m)+paint (PVDF resin, 25 μ m)+clear coat (nano ceramic, 10 μ m), total film thickness ≥ 40 μ m, no corrosion after 3000 hours of salt spray test.

-Ultra weather resistance: PVDF resin fluorocarbon bond energy (485kJ/mol) can reflect 92% ultraviolet rays, making the curtain wall have a 20-year color difference Δ E ≤ 1.5 in high humidity environments (RH ≥ 85%) in the South China Sea, far exceeding the national standard Δ E ≤ 5.0 requirement.

4. Bridge insulation: Engineering practice of energy-saving curtain wall

The 50 series aluminum profiles form an efficient bridge breaking structure through "6063-T5 aluminum alloy+PA66 insulation strip":

-Performance of insulation strip: 24mm wide PA66 GF25 insulation strip, thermal conductivity of 0.3W/(m · K), transverse tensile strength ≥ 80N/mm, shear strength ≥ 24N/mm ² (EN 14024).

-Energy saving data: The heat transfer coefficient K value of the entire window is ≤ 1.8W/(m ² · K), which reduces the building's cooling energy consumption by 35% to 45% compared to ordinary curtain walls, and reduces the annual carbon emissions by 12kg/m ².

3、 Application scenarios and engineering verification of the 50 series aluminum profile curtain wall

1. Super high-rise buildings: dual benchmarks for structural safety and aesthetics

-Shanghai center Building (632m): 50 series aluminum profile curtain wall is adopted, and the wall thickness of the main keel is 3.5mm. Through fluorocarbon spraying silver gray coating (RAL 9006), the wind pressure resistance level of 12 (3.5kPa) and the annual average energy saving of 28% are achieved.

2. Coastal high corrosion environment: Extreme verification of fluorocarbon spraying

-The artificial island port of the Hong Kong Zhuhai Macao Bridge: The 50 series curtain wall has been in service for 5 years in a marine atmospheric environment with a salt spray concentration of 8mg/m ³. The fluorocarbon spray coating only shows an average annual loss of 0.2 μ m, far below the industry average of 1 μ m/year.

3. Industrial pollution areas: innovative application of self-cleaning technology

-Tangshan Iron and Steel Industrial Park Headquarters: The 50 series aluminum curtain wall with integrated photocatalytic fluorocarbon spray coating reduces PM2.5 adhesion by 70%, and surface cleaning can be achieved by rainwater flushing, reducing maintenance costs by 60%.

4、 Full chain quality control: precise control from aluminum alloy raw materials to fluorocarbon spraying

1. Raw material traceability system

-Each batch of aluminum alloy raw materials comes with a QR code traceability label, which can be traced back to the aluminum ingot melting and casting furnace (accurate to ± 2 hours), ensuring that the fluctuation of silicon and magnesium content is ≤ 0.03%.

2. Production process of aluminum profiles

-Extrusion process: 5500T servo hydraulic press (pressure accuracy ± 0.5%) is used, and the mold temperature is controlled at 450 ℃± 5 ℃ to ensure that the cross-sectional dimension tolerance of aluminum profiles is ≤ 0.08mm.

-Fluorocarbon spraying line: Fully automatic electrostatic spraying robot (repeat positioning accuracy ± 0.1mm) paired with infrared curing furnace (temperature control ± 3 ℃), coating thickness fluctuation ≤ 3 μ m.

3. Finished product testing standards

-Mechanical properties: Vickers hardness ≥ 12HW (GB/T 4340.1), tensile strength ≥ 160MPa (ASTM B557).

-Coating performance: Adhesion scratch test level 0 (ISO 2409), QUV light retention rate ≥ 90% after 4000 hours of aging.

5、 Future prospects: Green and intelligent revolution of aluminum profile curtain wall

1. Large scale application of recycled aluminum alloys

-By using recycled aluminum alloy raw materials with a recovery rate of ≥ 90%, the carbon emission intensity is reduced to 1.2kg CO ₂/kg (8.6kg CO ₂/kg for primary aluminum).

2. Integrated photovoltaic curtain wall

-Embedding cadmium telluride thin film batteries (with a conversion efficiency of 18%) in the aluminum profile frame to achieve a power generation of ≥ 35W/m ² for the curtain wall system.

3. Breakthrough in intelligent fluorocarbon coating

-Developing thermochromic fluorocarbon spraying technology, the coating can adjust the solar radiation absorption rate (TSR 0.2~0.6 dynamically adjustable) with temperature changes, and the building cooling load can be further reduced by 15%.

Conclusion: Using aluminum alloy as the base and fluorocarbon spraying as the blade, ushering in a new era of aluminum profile curtain walls

The birth of the 50 series aluminum profile curtain wall is an epic collision between aluminum alloy raw material technology and fluorocarbon spraying technology. From the high-purity aluminum alloy raw materials carefully selected from Worsley bauxite mine in Australia, to the precision formed multi cavity aluminum profiles on extrusion lines, and to the nanoscale fluorocarbon spray coating that gives them an "immortal body" - this 8000 kilometer industrial chain is redefining the value standards of building facades with hardcore technology.

When 6063-T5 aluminum alloy is melted into hot aluminum liquid in the furnace, it is destined to become the cornerstone of the curtain wall revolution; When the fluorocarbon spraying process covers the surface of aluminum profiles with molecular level precision, buildings have the ultimate weapon against time. This may be the deep philosophy of modern engineering: only by deeply rooted in the essence of raw materials and using black technologies such as fluorocarbon spraying as wings, can we truly realize the eternal promise of "coexistence between architecture and nature".

The 50 series aluminum profile curtain wall is not only a set of cold technical parameters, but also an industry's unremitting exploration of the potential of aluminum alloys and the ultimate pursuit of fluorocarbon spraying technology. When future architects look back at this era, they will surely remember that it was these seemingly tiny aluminum profiles and curtain wall systems that supported humanity's ambition to extend into the sky.