Significance of Quality Factor in Aluminum Casting Processes

One of the few metals that by all of the processes used in casting metals can be cast is Aluminum. In decreasing order of amount of aluminum casting, these processes are: continuous casting, permanent mold casting, die casting, plaster casting, sand casting, and investment casting. Other processes such as hot isostatic, squeeze casting, and lost foam pressing are also mentioned. Several key parameters such as pouring temperature, permeability, compression strength all need to be applied and controlled accurately for the process to work in an optimum way.

Using green sand as the molding material, Green sand casting is a common sand casting process. Greensand is a sort of wet quartz sand used in a wet atmosphere and is not green in color.

Affecting the selection of a casting process, there are many factors that for producing a specific aluminum alloy part. For every process of casting, the major factors are as follows:

Quality factors

Many aluminum alloy castings, in terms of feasibility, can be produced by any of the available methods. However, design or dimensions features determine the best casting method automatically for a considerable number of castings. As sand castings, most very large cast products are made rather than as die or permanent mold castings. With metal molds, Small castings from aluminum casting suppliers usually are made to ensure dimensional accuracy.

In the selection of a casting process, Quality factors are also important. The term quality refers to both levels of mechanical properties and degree of soundness when applied to castings.

However, you must know that air tends to be trapped in the casting although cooling rates are very high in die casting, which results in appreciable porosity amounts at the center. To find ways of reducing such porosity, Extensive research has been conducted; however, eliminating is difficult if not impossible. Die castings, as compared to low-pressure or gravity-fed permanent mold castings, often are lower in strength which despite slower cooling is sounder. To large quantity production of relatively small parts, Die casting by aluminum casting service is especially suited.