Semi-Elliptical Extruded Aluminum Tube
Semi-Elliptical Extruded Aluminum Tube, with its unique cross-section, perfectly combines lightweight design, high strength, and ease of installation. Whether in architectural decoration, industrial equipment, or vehicles, it provides reliable support while reducing weight.
Product Specifications
| Products name | Semi-Elliptical Extruded Aluminum Tube |
| Material | Aluminum 6061,6063 |
| Size | OEM |
| Color | Silver, black, champagne, etc. |
| Surface treatment | Optional anodizing or coating to enhance corrosion resistance and aesthetics. |
| Machinability | Can be quickly processed through cutting, drilling, stamping, and other methods. |
| Extrusion | After heating aluminum ingots to 400-500°C, they are pressed through a die using a hydraulic press at a speed of 0.5-2 m/min to form a semi-elliptical cross-section tube. |
| Structural efficiency | Semi-elliptical cross-section provides an optimized strength-to-weight ratio, with excellent bending performance along the long axis and space-saving along the short axis. |
| Design flexibility | Extrusion processes support complex cross-sectional designs, allowing for the integration of functional structures and reducing secondary processing. |
| Lead Time | 7-15 days (standard); 20-30 days (custom) |
| MOQ | 1 ton |
1
Aluminum surfaces naturally form an oxide layer, which can be further enhanced for corrosion resistance through anodizing or powder coating, making it suitable for outdoor or humid environments.
2
Design of size and specifications needs to take into account the requirements for both thickness and length. The following covers size range, compatibility design, and specification parameters, and can also be customized according to specific needs.
3
Through the extrusion process, aluminum ingots heated to a plastic state are forced through a die of a specific shape to form continuous profiles. This process can achieve precise shaping of complex cross-sections and has a high material utilization rate.
4
Semi-elliptical cross-section combines the geometric characteristics of an ellipse and a plane. It provides high bending stiffness along the major axis, optimizes space utilization along the minor axis, and the flat sides make it easy to connect or attach to other components.
Application Scenario
Interior Decoration: In interior decoration, semi-elliptical extruded aluminum tubes can be used to create ceiling support structures, partitions, and furniture frames.
Automotive Industry: Plays an important role in automobile manufacturing and can be used to make engine mounts, transmission housings, roof racks, chassis components, and more.
Rail Transit: Can be used to manufacture the body frame, door systems, and interior components of rail transit vehicles. Its corrosion resistance and lightweight characteristics help reduce vehicle maintenance costs and improve operational efficiency.
Public facilities: Commonly used for making billboards, signs, light boxes, and lifting poles in public spaces. Its aesthetic appeal, light weight, and durability make it an ideal choice for these applications, while the recyclability of aluminum also aligns with the concept of green building.
Composition Structure and Product Selection
1. Material Composition
The semi-elliptical extruded aluminum tube is based on aluminum alloy as the main material. Common alloy types include:
6061-T6: Contains magnesium and silicon alloy elements, with a tensile strength of 310 MPa, yield strength of 276 MPa, and elongation of 12%. It is suitable for high-strength structural components (such as automobile frames and aerospace parts).
6063-T5: Contains magnesium and silicon alloy elements, with a tensile strength of 160 MPa, yield strength of 110 MPa, and elongation of 8%. It is suitable for general decorative or light-load structures (such as door and window frames, furniture supports).
2. Cross-Section Shape Design
Semi-Elliptical Cross-Section: Composed of a long axis and a short axis, the long axis provides higher bending stiffness, while the short axis optimizes space utilization. For example, for a 30×15mm aluminum tube, the long axis of 30mm matches the length direction of the tiles, and the short axis of 15mm corresponds to the thickness of the tiles, providing stable support.
Wall Thickness Distribution: The wall thickness ranges from 0.8 to 5.0mm and can be adjusted according to load requirements. For example, when supporting heavy tiles, a wall thickness of 3.0–5.0mm can be selected; for light decorative applications, 0.8–1.5mm can be chosen, balancing cost and performance.
3. Internal Structural Features
Seamless Structure: Formed integrally through extrusion, without welded joints, providing high internal continuity and capable of withstanding high pressure (such as in hydraulic systems or pneumatic pipelines) or high stress (such as in building structural supports).
Hollow Design: The hollow internal structure reduces weight while maintaining sufficient sectional moment of inertia. For example, an aluminum tube with an outer diameter of 50mm and a wall thickness of 3mm has an 80% higher sectional moment of inertia compared to a solid aluminum rod of the same outer diameter, achieving a balance between lightweight and strength.
4. Manufacturing Process Correlation
Extrusion Molding: Aluminum alloy billets heated to 400-500℃ are extruded through a die to form a semi-elliptical cross-section. The die design must precisely control the ratio of the long axis to the short axis (e.g., 1:0.5 to 1:0.7) to ensure cross-sectional dimensional accuracy of ±0.1mm.
Subsequent Processing:
Heat Treatment: For T6 temper, solution treatment (530℃ for 2 hours) and artificial aging (175℃ for 8 hours) are required to increase strength to 310MPa.
Surface Treatment: Anodizing (film thickness 8-25μm) enhances corrosion resistance, powder coating (thickness 40-120μm) provides a variety of colors, and woodgrain transfer printing meets decorative requirements.
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