Product details

Aluminum Zipper Fin Stack

The aluminum zipper fin stack is stamped from aluminum sheet indiviually. Firstly, Utilizing a punch tooling to create the geometry of the fin. Length, height and fin pitch are determined in the first set of punches. The fin thickness is determined by the thickness of the aluminum sheet. In the process of Stamping, the fin is interlocked with the previous fin. When the fin stack has enough fins for the length, it will be removed from the punching area. As the aluminum could not solder with heat pipes or other metal directly, we have to implement surface finish for the fin stack, typically the surface finish is nickel plating, which not only can make the aluminum fin stack solderable, but also has beautiful appearance, and then we soldered it with a copper base and heat pipes to form a zipper fin heat sink. Zipper fin stack also can be designed with high aspect ratio fin heat sink profiles, enabling taller, thinner and denser fins to improved cooling performance. so zipper fin heat sink is also called high performance heat sink.

Heat Pipes

Heat pipe is a two phase heat transfer device, which is a very high effective thermal conductor, heat pipe consists of vaccum copper tube, working fluid, and a wick structure, when the heat pipes contact the heat source, the heat vaporizes the liquid working fluid and the vapor absorb the heat and move to the condenser end by the pressure, in the condenser end, the hot vapor condenses to liquid and release the latent heat, the liquid flows back to the vaporazation by the capillary force of wick structure, The phase change processes and two-phase flow circulation continue as long as the temperature gradient between the evaporator and condenser are maintained.