To originate a piece, the processes of smelting of metals are among the oldest known. Since always, its use has been to obtain metal parts, however, since recently and with technological advances, its use has been extended and has served to apply it to other types of materials such as certain polymers.
What is the obtaining of a metallic piece through the foundry?
A mold, previously designed with the desired shape, you see a metal in liquid state on its inner surface. In a subsequent cooling and solidification inside this matrix, the metal piece we want is formed. The most important and complex part is to which our die-making company is destined, the ability to reproduce geometries and internal surfaces with the exact precision so that in the filling process we obtain the piece we are looking for.
Versatility of the casting process.
Thanks to the casting process, it is possible to manufacture an infinite number of pieces with different sizes and shapes that would be very difficult to obtain in other manufacturing processes. In addition, the casting process allows to work very complex materials.
Disadvantages of the foundry.
Among its drawbacks is the difficulty of manufacturing the matrix. It needs sophisticated machinery to meet the demands of current projects. Today, with technological advances it has ceased to be an inconvenience, because the surface finishes of the pieces obtained need less mechanization, thanks to the excellent preparation of the multidisciplinary team and the quality of the machines used to obtain the matrix. With the new diagnostic systems, we are able to detect small defects in the interior surfaces of the mold.
What does the smelting process depend on?
It depends directly on the material from which the mold is made. It is very important to be able to conveniently classify casting molds according to the original material. We can establish two large groups, on the one hand we have the molds:
Disposable They are characterized because they are only used once for each piece to be produced. After cooling they are disintegrated. These molds are usually made up of sand, ceramics, plasters or other materials from the same family.
Permanent molds They can be used to obtain many equal pieces since they are made of materials that withstand very high temperatures, such as steel. Thanks to their good thermal conduction, they allow very fast cooling, affecting the grain size and properties of the piece. These are processes that allow the manufacture of parts to be more economical.