Overview of Aluminum Alloy Door & Window Profile Extrusion
Aluminum alloy door and window profile extrusion is a hot extrusion process that shapes aluminum billets into profiles with desired cross-sections. This technology enables production of complex-profile, high-precision door/window components, serving as the core manufacturing technique for modern architectural fenestration.
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Extrusion Process Flow for Aluminum Door & Window Profiles
1. Raw Material Preparation
- Selection of 6xxx series alloys (e.g., 6063, 6061)
- Aluminum billet diameter matching profile dimensions
- Homogenization heat treatment for billets
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2. Die Design & Manufacturing
- Design of porthole dies or flat dies based on profile cross-section
- Use of H13 hot-work tool steel for dies
- Precision machining and heat treatment for dies
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3. Extrusion Process
- Heating: Billets heated to 450-500°C, dies to 400-450°C
- Extrusion: Aluminum forced through dies under pressure
- Quenching: Immediate air/water cooling after exiting die
- Pulling: Stretcher alignment for profile straightness
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4. Post-Extrusion Processing
- Stretching & Straightening: Eliminate bending/twisting
- Cut-to-Length: Precision cutting for fenestration requirements
- Aging Treatment: T5/T6 heat treatment for strength enhancement
- Surface Treatment: Anodizing, powder coating, or electrophoretic coating
Keywords: profile straightening, aging treatment, aluminum surface treatment, anodized aluminum profiles
Critical Technical Parameters for Profile Extrusion
Parameter CategoryTypical ValueImportanceExtrusion Temperature460-500°CAffects surface quality & mechanical propertiesExtrusion Speed5-50m/minImpacts productivity & profile qualityExtrusion Ratio10-100Determines deformation degree & metal flowDie Bearing Length2-8mmInfluences dimensional accuracy & surface finish
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Equipment for Aluminum Profile Extrusion
Main Equipment Components
- Extrusion Press: 800-3600 ton capacity based on profile size
- Billet Heater: For aluminum billet heating
- Die Heater: Maintains optimal die temperature
- Puller: Ensures profile straightness
- Cooling Bed System: For profile cooling & transfer
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Common Quality Issues & Solutions
1. Surface Defects
- Scratches: Poor die polishing or rough guides
- Blisters: Gas in billets or trapped air in container
- Black Lines: Aluminum sticking to die bearing
2. Dimensional Deviations
- Uneven Wall Thickness: Poor die design or misalignment
- Twisting: Insufficient pulling force or uneven metal flow
3. Mechanical Property Issues
- Low Strength: Improper aging or alloy composition deviation
- Insufficient Hardness: Inadequate quenching cooling rate
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Industry Development Trends
- Energy-Efficient Profiles: Multi-chamber thermal break designs
- Large-Section Profiles: For oversized door/window systems
- Smart Extrusion: Digital control for precision manufacturing
- Green Production: Energy reduction & waste minimization
- Composite Profiles: Aluminum-wood/plastic hybrid systems
Keywords: thermal break profiles, large aluminum sections, intelligent extrusion, eco-friendly aluminum, composite window profiles
Advantages of Aluminum Profile Extrusion
- High Productivity: Continuous high-speed production
- Design Flexibility: Complex cross-section capabilities
- Material Efficiency: 100% recyclable scrap
- Consistent Quality: High dimensional accuracy
- Superior Strength-to-Weight Ratio: Lightweight yet strong
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By optimizing aluminum door/window profile extrusion processes, manufacturers can produce high-quality fenestration components meeting diverse architectural requirements. With ongoing technological advancements and evolving market demands, aluminum profile extrusion continues to innovate, delivering superior products for the construction industry.