Aluminium Extrusion Profiles  Manufacturers, Traders, Suppliers

Aluminum extrusion is a manufacturing process where a heated aluminum billet is forced through a custom-shaped die under high pressure, forming continuous profiles with uniform cross-sections. This versatile process is widely used to produce lightweight, high-strength, and complex-shaped components for various industries.
Key characteristics of aluminum extrusion include:

• High Efficiency: Enables mass production with minimal material waste.
• Design Flexibility: Creates intricate hollow/solid profiles, thin walls, and integrated features (ribs, slots, flanges).
• Material Advantages: Utilizes aluminum alloys (e.g., 6063, 6061, 7075) known for corrosion resistance, thermal conductivity, and recyclability.
• Cost-Effective: Low per-unit cost for high-volume production, with reusable dies for consistent quality.

1. Extrusion Processes

• Direct Extrusion (Forward Extrusion):

• The billet is pushed through the die by a ram; the most common method for aluminum profiles (e.g., window frames, heat sinks).

Indirect Extrusion (Backward Extrusion):

• The die moves into the stationary billet, reducing friction and suitable for softer alloys or complex shapes.

Hydrostatic Extrusion:

• Uses a fluid medium to transmit pressure, enabling higher extrusion ratios and better surface finishes (rarely used for aluminum due to cost).

Profile Extrusion:

• Produces custom cross-sections (solid/hollow) for structural or functional applications.

2. Materials (Aluminum Alloys)

• 6063: Most common for architectural applications (high extrudability, good surface finish).
• 6061: Balances strength, corrosion resistance, and weldability (used in aerospace, automotive).
• 7075: High-strength alloy for aerospace structures (requires heat treatment).
• 5052: Marine-grade alloy with excellent corrosion resistance (boat components).
• 3003: Economical for general-purpose applications (heat sinks, electrical enclosures).

3. Key Process Steps

• Aluminum ingots are cast into cylindrical billets (heated to 400–550°C, depending on alloy).

Die Design & Installation:

• Custom dies (made of tool steel or tungsten carbide) with precise cross-sectional profiles; lubrication applied to reduce friction.

Extrusion:

• Billet is forced through the die by a hydraulic press (5,000–50,000 tons of force), forming the profile.

Cooling & Straightening:

• Air/water quenching to solidify the profile; tension levelling to correct dimensional deviations.

Heat Treatment (Optional):

• Solution annealing and ageing (e.g., T6 temper for 6061) to enhance mechanical properties.

Surface Finishing:

• Anodizing, powder coating, painting, or polishing for corrosion resistance and aesthetics.

4. Die Design Considerations

• Cross-Section Complexity: Avoid sharp corners or extreme wall thickness variations to ensure uniform material flow.
• Extrusion Ratio: Ratio of billet cross-sectional area to profile area (typically 10:1 to 100:1; higher ratios for complex shapes).
• Hollow Profiles: Require porthole dies or bridge dies with a mandrel to create internal cavities (e.g., pipes, structural beams).
• Tolerance Control: Typical dimensional tolerances: ±0.1mm for small profiles, ±0.5mm for large sections (ISO 6892-1 for mechanical properties).

5. Equipment

• Extrusion Presses: Horizontal presses (most common) with capacities ranging from 500 to 5,000 tons.
• Die Heating Systems: Maintain die temperature (350–500°C) for consistent material flow.
• Cooling Systems: Air nozzles, water spray, or mist systems to control solidification rate.
• Pullers/Tension Levellers: Ensure straightness and dimensional accuracy of extruded profiles.

6. Quality Control

• Dimensional Inspection: Laser scanners, calipers, or CMMs to check cross-sectional dimensions and straightness.
• Mechanical Testing: Tensile strength, yield strength, and hardness (Rockwell/Brinell tests) to verify alloy temper (e.g., T4, T6).
• Surface Inspection: Visual checks for defects (scratches, cracks, die marks) or porosity.
• Non-Destructive Testing (NDT): Ultrasonic or X-ray testing for internal defects in critical applications (aerospace, automotive).

1. Construction & Architecture

• Structural Profiles: Window/door frames (6063-T5), curtain walls, railings (anodized for weather resistance).
• Building Components: Roof trusses, stair handrails, sunshades (lightweight and corrosion-resistant).
• Industrial Structures: Mezzanine frames, warehouse racking (high-strength 6061-T6).

2. Automotive Industry

• Body-in-White (BIW): Crash-resistant beams, floor rails, and battery trays (6061/7075 for weight reduction).
• Powertrain Components: Transmission housings, heat exchangers (3003 for thermal conductivity).
• Chassis Parts: Suspension arms, drive shafts (7075-T6 for high-strength, lightweight designs).

3. Electronics & Electrical

• Heat Sinks: Complex fin profiles for CPU/gPU cooling (6063 with high thermal conductivity).
• Enclosures: Laptop/tablet frames, server racks (anodized 6061 for aesthetics and EMI shielding).
• Electrical Components: Bus bars, cable trays (1100 pure aluminum for conductivity).

4. Aerospace & Aviation

• Airframe Structures: Wing spars, fuselage panels (7075-T6 for high strength-to-weight ratio).
• Interior Components: Luggage racks, cabin frames (6061-T6 for formability and fire resistance).
• Engine Parts: Turbine brackets, heat shields (aluminum-lithium alloys for extreme environments).

5. Industrial Equipment

• Machine Frames: Linear guides, robotic arms (6063-T5 for precision and easy assembly).
• Conveyor Systems: Roller profiles, support structures (anodized to resist wear and corrosion).
• Tooling: Fixtures, jigs, and dies (aluminum for lightweight, high-rigidity components).

6. Consumer Goods

• Consumer Electronics: Smartphone/tablet cases (6063-T6 with CNC-machined finishes).
• Sports Equipment: Bicycle frames, ski poles, golf club shafts (7075-T6 for strength and durability).
• Household Items: Furniture legs, kitchen utensils, shower frames (corrosion-resistant 6063).

7. Energy & Renewable Resources

• Solar/Wind Energy: Solar panel frames, wind turbine brackets (6061-T6 for outdoor durability).
• Power Transmission: Electrical conductor bars, transformer enclosures (1350 aluminum for high conductivity).
• Hydropower: Valve components, water conduit profiles (5052 for marine-grade corrosion resistance).

Shandong Yankuang Light Alloy is a Chinese extrusion provider for Structural Aluminium Extrusions, we Supply the Custom Soluctions for Automotive, Rail, New Engery, Marine Systems, Construction and Offshore Projects.We're capable to supply the extrusion product by following range:Extrusion Structural Profiles: Cross Section Ranged from 100mm-750mmExtrusion Tube (with the seam): Diameter Ranged from 30mm-630mmExtrusion Tube (Seamless): Diameter Ranged from 80mm-410mmExtrusion Bar: Diameter Ranged from 30mm-400mm

Shandong Yankuang Light Alloy is a Chinese extrusion provider for Structural Aluminium Extrusions, we Supply the Custom Soluctions for Automotive, Rail, New Engery, Marine Systems, Construction and Offshore Projects.We're capable to supply the extrusion product by following range:Extrusion Structural Profiles: Cross Section Ranged from 100mm-750mmExtrusion Tube (with the seam): Diameter Ranged from 30mm-630mmExtrusion Tube (Seamless): Diameter Ranged from 80mm-410mmExtrusion Bar: Diameter Ranged from 30mm-400mm

Shandong Yankuang Light Alloy is a Chinese extrusion provider for Structural Aluminium Extrusions, we Supply the Custom Soluctions for Automotive, Rail, New Engery, Marine Systems, Construction and Offshore Projects.We're capable to supply the extrusion product by following range:Extrusion Structural Profiles: Cross Section Ranged from 100mm-750mmExtrusion Tube (with the seam): Diameter Ranged from 30mm-630mmExtrusion Tube (Seamless): Diameter Ranged from 80mm-410mmExtrusion Bar: Diameter Ranged from 30mm-400mm