Then we can get all kinds of heat sink raw materials that we want from the mold. Then we can use it by cutting, grooving, grinding, deburring, cleaning and surface treatment. Aluminum Casting Heat Sinks Although aluminum extruded heat sinks are inexpensive and inexpensive to manufacture, they are limited by the soft texture of the aluminum material itself. The ratio of its fin thickness to the height of the fins will generally not exceed 1: 18.
Aluminum Extruded Enclosure picture