Aluminium Heatsink Led
Material: Aluminum alloy AL6063
Surface: Anodized ( Red and Break color)
Tolerance: ±0.05 mm
Application: LED lighting
Product Introduction
roducts Description
This Aluminium Heatsink Led is a typical sunflower-shaped heatsink structure custom-designed for a German customer, specifically for thermal management of point light sources (COB LEDs). Material: Made of 6063 aluminum alloy, with a thermal conductivity of 220-230 W/(m·K).
Structure: Central cylinder (heat sink base): responsible for directly contacting the LED chip and absorbing heat. Radial fins: increase the contact area with the air. The fins are designed with a slight twist or curvature, which helps to generate natural convection through the chimney effect. Color/Surface: Available in various anodized colors (gold, blue, purple, red, black, gunmetal gray, etc.), which not only enhances aesthetics but also improves thermal radiation efficiency. Applicable power: A single unit can support LED cooling requirements from 10-100W.
Products Process
The aluminum heatsink LED product features densely packed fins with a three-dimensional curved shape, requiring complex manufacturing and processing techniques:
1. Aluminum Extrusion
Extrusion Process: Aluminum billets (typically 6063 alloy for its superior thermal conductivity) are heated and forced through a 1500-ton extrusion press to form the desired cross-sectional shape.
Cooling and Straightening: After air cooling, the extruded long profiles undergo tension straightening to eliminate internal stresses and ensure straightness, followed by aging treatment.
2. Precision Machining (CNC/Lathing) Flat Bottom: The bottom must be machined to ensure flatness (typically required to be ≤ 0.05 mm) to guarantee a tight fit with the LED chip. Drilling and Tapping: Screw holes for fixing the LED chip and lens are drilled into the top of the central cylinder. 3. Surface Treatment The vibrant colors shown in the image are mainly achieved through the following steps: Sandblasting/Polishing: Removes textures produced during forging and enhances surface texture. Anodizing: Dyeing process: Dyes are adsorbed into the micropores formed in the oxide film. Sealing treatment: Locks in the color and enhances corrosion resistance. Functional Significance: Black and dark surfaces have higher infrared emissivity, resulting in better heat dissipation in natural convection environments compared to lighter colors.
Product Advantages Analysis
Aluminum Heatsink LED Features: High thermal conductivity aluminum alloy + one-piece molding, no thermal resistance seams. Compact and efficient, providing a large heat dissipation area in a small space. Aesthetic value, suitable for exposed lighting designs, with multiple colors to match interior design styles. Lightweight, lighter than copper heat sinks, reducing the overall load on the lighting fixture.
Our factory & quipment
We specialize in CNC machining, injection molding, sheet metal fabrication, and aluminum profile extrusion.
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Q1: What is an Aluminium LED Heatsink?
An Aluminium LED Heatsink is a crucial heat dissipation component used to quickly conduct and dissipate the heat generated by the LED chip during operation into the air.
A good heatsink can significantly reduce the LED junction temperature, thereby extending LED lifespan, improving luminous efficacy stability, and reducing light decay.
Q2: Why is aluminum typically chosen for LED heatsinks instead of copper?
Aluminum offers the best overall performance advantages in LED heat dissipation applications:
Good thermal conductivity (approximately 200 W/m·K)
Lightweight, suitable for lamp structure design
Easy to be extruded into complex fin structures, increasing heat dissipation area
Significantly lower processing cost than copper
Surface can be anodized, balancing heat dissipation and aesthetics
Therefore, aluminum alloy is the most mainstream and mature material choice for LED heatsinks.
Q3: What are some commonly used aluminum alloy grades for Aluminium LED Heatsinks?
The most commonly used aluminum alloy grades in LED heat sinks include:
6063-T5 / 6063-T6: Excellent extrusion performance and high surface quality, making them the preferred material for LED heat sinks.
6061-T6: Higher strength, suitable for LED heat sink structures requiring CNC precision machining.
We can assist customers in selecting the most suitable material based on their lamp power, structure, and cost requirements.
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