As a two-piece construction, paths are then machined into the base of the cold plate, which allows liquid to flow through these paths. These flow paths can be very complex and include fins and turbulators to significantly increase the heat trans. A top piece is then place on to the base and friction stir welded into place.
This manufacturing method for a Liquid Cooled Cold Plate is a solid-state joining process where the metal is not melted. Is is more of a forging process that uses spinning pin and downward force to create a bond between two pieces.
The joined material is plasticized by heat generated by friction between the surface of the plates and the contact surface.
This process is implemented on a high-speed vertical CNC machine. Machining and welding are done on the same work centre. The frictional heat is generated (while staying below the melting point) between the wear-resistant welding tool.
Finally the welded surface is fly-cut, inlet/outlet holes and component mounting holes are added.
A friction stir welded cold plate results in a leak proof seal that is very strong and reliable. If offer ac complex fluid path and has the ability to join different alloys.
Baknor is experienced in design and manufacturing friction stir welded high conductivity cold plates from all types of machined, extruded and cast aluminum alloys. Let us design or build to your print, the best performing and most cost effective cold plates for liquid cooling today.
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