Pressure Die Casting Aluminum Heat Sinks Die Castings vs Extrusions. There are different ways to create molded metals. One of the old methods is sand casting. This is still used at present and is useful in creating large metal custom made pieces. While this is convenient and perhaps quite inexpensive, it does not compare to the quality of more modern processes. Of course, it creates a rough metal part.
A more smoothed poured aluminum fixture would be created through gravity casting. But the more modern methods are Pressure Die Casting Aluminum Heat Sinks Die Castings vs Extrusions.
Pressure die casting uses modern technology like pressurized chambers to force melted metals like aluminum to mold into different complicated fixtures. These are then used for vehicles, industrial machines and household appliances.
Through extrusions, aluminum heat sinks are also casted. A die is used – a deep block serving as the mold. The preheated metal is then forced into this die to form individual or continuous pieces. This will of course only work for repetitive designs. A hydraulic powered press is used to push the metal into the die. Like die casting, it is possible to make a lot of quality parts with only one die or mold.
However, extrusions do not bring much flexibility when it comes to design. The die block is somewhat of a limitation for more fluid designs for pieces like sinks.
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