Extruded Cold Forging Heat Sink Diameter 120mm For 50W LED Light

Product Specification

Diameter 120mm Cold Forging LED Heat Sink 50W Lighting Existing Mold

1.Specification of Cold forging heat sink

2.Detail Photo

3.Description

Cold forged heat sinks are ideal for casting complex shapes with excellent thermal conductivity. The cold forging process can achieve almost perfect straightness, with more heat sinks per square millimeter. The shape of cold forging pin fin heat sink includes plate-fin heat sink, round pin heat sink and oval fin heat sink. The manufacture of forged heat sinks is very suitable for the use of copper, because copper heat sinks can be formed without high temperature and can cause minimal damage. The manufacture of cold forged heat sinks can usually include secondary machining operations, such as holes, chamfering, and steps to reduce unnecessary waste.

LAIDEFU is  market-leading pin fin design offers significant advantages for cooling LED applications including:

[LED Holder]

1. The pins provide a high degree of surface area
2. The cold forging process produces single piece of metal, high-density heat sink that provides outstanding thermal conductivity
3. The pin fin design will work effectively in many orientations
4. The forging technology provides the capability to incorporate custom features into the tool
5. The precision machined 10mm thick base offers high thermal conductivity and provides a flat, uninterrupted surface for hole patterns to support LED attachment, optics, and mounting brackets
6. Passive and Active (with integral fan) options

All COB LED heatsinks will be shipped pre-drilled

4.About the cld forging heat sink knowledge

1.About the cold forging heat sink

A Forged heatsink is manufactured using a modification of this process called cold forging. Cold forging uses high pressure and low temperature to ensure that no air bubbles, or other impurities are trapped in the material. This improves the thermal properties of the heatsink, and increases the density of the material.
A Forged heatsink is manufactured using a modification of this process called cold forging. Cold forging uses high pressure and low temperature to ensure that no air bubbles, or other impurities are trapped in the material. This improves the thermal properties of the heatsink, and increases the density of the material. Radian Thermal Products utilizes special open die tooling and intense pressure to produces high precision heatsinks with high aspect ratios. A Forged heatsink is typically manufactured one part at a time, and can be can be made from AL 6063 or C1100. Aspect ratio up to 35:1 are feasible, and no draft angles required on fins. Fins can be round, elliptical, straight or any combination on the same part.

2.Cold forging is a manufacturing process that is performed at room temperature and is suited to softer metals such as the aluminum and copper that Fodor uses for its heatsinks and precision metal products. The main advantages of the cold forging process are:

products can be produced to tight tolerances
an aesthetic surface finish removing the need for secondary finishing operations

An operator will put a piece of aluminum bar stock into the die of a cold forging press. When the press is activated, the bar stock will be 'squeezed' into the die set; taking on the shape of the die set.

Although the material started the process at room temperature, the temperature will rise to above 200°C degrees due to the friction strain rate of the blank material's deformation.

LAIDEFU cold forges their heatsinks out of a single piece of bar-stock to achieve maximum thermal conductivity at a low price point.

5.Note

Cold forged heat sink
An added benefit of this process is that a forged heatsink of the same design can be manufactured with different heights using only one set of forging die. When working with high aspect ratio, or dense fins a forged heatsink has no thermal interface between the fins/pins, and the base which will provide better performance compared with stamped-fin or bonded-fin heat sinks. Heat distribution can be further improved in aluminum heatsinks by embedding a copper inserts into the base during the forging. As this process is fairly expensive, for small volumes it may be worth exploring extrusion with a cross cut to produce square pins. For larger volumes die cast is a good alternative.
LAIDEFU has gained experiences in the manufacturing techniques for high power cold forged heat sink. We have resolved the problems such as the low thermal conductivity of die-casting micro-channels and higher costs for machining micro-channels. We have already applied cold forging heatsink to cooling solutions including high-voltage inverters, wind power converters, and electric motor controllers.
1. Manufactoring process: Cold forging process
2. Material: AL1070
3. Surface treatment: Clear/black/red/gold anodizing
4. Product type: Customized Design
5. Packing: export standard carton box with pallet.
6. Application: Industry/medical/measurement/house
you have any inquiry, please contact us.