Manufacturing an Industrial Power Supply Heatsink

Extruded aluminum heat sink for industrial power supply cooling applications

This heat sink is manufactured from an aluminum extrusion profile and incorporates
CNC machined mounting holes and assembly features.

1 Design Considerations

Industrial power supplies generate heat from power semiconductors, transformers, power modules, and other electronic components during operation.

Heat sink geometry, mounting features, and manufacturing methods are typically configured according to thermal and installation requirements.

1.1 Fin Structure

The heat sink incorporates multiple cooling fins to increase the available heat dissipation area.

Fin dimensions and spacing are configured according to thermal requirements and profile design requirements.

1.2 Base Section

The base section provides the mounting surface for power devices and transfers heat to the cooling fins.

Base dimensions are configured according to thermal load and installation requirements.

1.3 Mounting Features

Mounting holes and machined surfaces are incorporated according to assembly requirements.
Additional machining operations may be performed to create installation and fastening features.

1.4 Surface Finish

Surface finishing may be applied according to environmental and appearance requirements.

Anodizing, hard anodizing, and powder coating are commonly used for aluminum heat sinks.

02 Aluminum Extrusion Profile

The heat sink profile combines a flat base section with integrated cooling fins in a single extrusion.

The profile incorporates the structural features required for subsequent machining and assembly operations.

03 Thermal Structure

Cooling fins are incorporated on both sides of the heat sink profile to increase the available heat dissipation area.

Fin quantity, fin height, and fin spacing are configured according to thermal requirements and profile dimensions.

The fin structure extends along the full profile length.

Extruded aluminum heat sink with integrated cooling fin structure
Integrated cooling fin structure of the extruded aluminum heat sink.

04 CNC Machining and Surface Finishing

After extrusion, CNC machining was performed to create mounting holes, threaded holes, and assembly features.

Machining details were configured according to the installation requirements of the power supply assembly.

Surface finishing can be applied according to corrosion resistance, appearance, and environmental requirements.

Common finishing options include anodizing, hard anodizing, and powder coating.

CNC machined aluminum heat sink with threaded mounting holes
CNC machined heat sink with mounting holes and threaded features.

05 Finished Heat Sink Component

The finished heat sink incorporates cooling fins, mounting surfaces, and machined features required for industrial power supply applications.

Profile dimensions and machining features can be configured according to thermal and installation requirements.

Finished aluminum heat sink components for industrial power supplies
Finished aluminum heat sinks with CNC machined mounting features.

06 Applications

Industrial power supply heat sinks are commonly used in power supplies, power converters, battery charging equipment, and industrial control systems.

Profile dimensions, fin structures, and machining features may be configured according to application requirements.

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