To understand the advantages to using cast aluminum plate, it is first important to take a closer look at the differences in cast and wrought aluminum as a whole. Through a better understanding of the different types of aluminum, it will be easier and more comfortable in selecting the right type of cast aluminum tool plate.
The differences between cast aluminum and wrought aluminum will be reflected in the naming scheme as well as the in the properties and performance of the alloy. In general, the cast aluminum products are used more commonly in applications where the alloy has to have a very high strength to weight ratio and also a high corrosion resistance. Typically cast aluminum alloys will have a high silicon level.
With the casting process, it is possible to create a very controlled internal structure within the alloy. This results in a cast aluminum tool plate that is internally stable. For molds, jig plates and precision types of applications this is critical. When the aluminum it is dimensionally stable, it is highly practical to work with.
Another critical element to the cast aluminum is that it can be precision cut and precision milled to extreme flatness. This is not just the visible flat that may be expected, but rather precision flatness as measured using a specific flatness testing device. These measurements are also completed on a granite table, so there is no deviation in the surface of the table once they sheet of aluminum is positioned on the table.
Machining and Welding
With the low internal stress and the specific alloys in the options in cast aluminum tool plate, it is possible to find the optimal combination of weldability and machinability.
Overall, this cast aluminum plate will be rated as very good for both resistance and WIG/MIG welding. It is important to note that WIG or Wolfram Inert Gas may also be known as TIG or Tungsten Inert Gas, it is all the same process. As some wrought aluminum alloys are not appropriate for resistance welding, the practical benefits to cast aluminum become more obvious from a production perspective.
Corrosion Resistance
While there are a lot of reasons why aluminum makes a good choice for a variety of applications and environments, corrosion resistance is at the top of many lists of requirements for materials.
Cast aluminum plate for tool or jig manufacturing is considered excellent for inland atmosphere and good for marine atmosphere, which will make it a natural choice for many different applications.
