Technologies for Heat Sinks and Liquid Coolers

Material, manufacturing process and joining technique decide which cooling solution is possible. Here you will find the technologies behind our air and liquid coolers.

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Five technology areas

From material selection to final inspection: each area and its processes in detail.
Milled aluminium cold plate with visible machining marks

Materials

Aluminum, copper and stainless steel: thermal conductivity, corrosion behavior and machinability decide the right alloy.

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Overview of brazing technology for copper pipes in cooler blocks

Joining Technologies

Pressing, brazing, welding and bonding: how tubes, fins and components are joined permanently and with low thermal resistance.

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Overview of machining aluminium cold plates

Forming & Processing

Impact extrusion, tube bending and machining: shaping and processing from the blank to the ready-to-install geometry.

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Overview of surface finishing for anodised heat sinks

Coating & Marking

Surface finishing and marking: protection, appearance, emissivity and traceability of the parts.

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Overview of quality inspection at COOLTEC

Service & Quality

Leak testing, tolerance control, assembly and finishing: quality assurance up to delivery.

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Which technology fits your application?

Our engineering team helps you choose material, manufacturing and joining processes to match heat load, installation space and quantity.

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Efficient thermal management for the high-tech industry

Learn how to optimize cooling for high-tech applications – with solutions that are efficient, reliable, and ready to implement.

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COOLTEC CoolHow Report 2026 – Cover