Aluminum Die Casting Defects and Remedies

Aluminum die casting can be done by means of custom metal casting wherein aluminum castings can be based on the requirements and drawings of the customers. Aluminum foundries prefer 2D drawings except for complex castings which can be based on 3D drawings. Real samples presented by the customers can be very useful to aluminum foundries because these can solve technical issues. This simply means that real samples are very helpful to aluminum foundries.

Aluminum and alloys are melted in different ways. There are defects in the aluminum die casting depending on the channel and coreless induction furnaces used. Since these are fired by fuel oil or natural gas or electric radiation and resistance, the choice of the furnace is very important. Degradation often results in the melting and casting process in the following situations:

First is when the temperature and the time set are wrong. In this case, the hydrogen absorbs often results in the increase of hydrogen dissolved which can affect the specific composition. It can also result in the loss of oxidation as well as formation of the complex oxides.

Second is when time and temperature are not properly set, then there is high reactivity and low pressures of vapour which thus affect the mechanical properties in aluminium die casting. Aluminum alloys are dependent of the soundness and proper die casting.

Buyers of aluminum die castings must look for the suitable foundries in the town. To avoid defects, customers must do the following:

First, the buyers/customers must give to the aluminum foundries the detailed drawings and its full requirements as well as remind the foundries of the technical requirements such as the unit weight, the texture as to whether it is machined, fine or rough, the dimensions for both rough castings and the finished parts, the hardness and the strength of the materials, the surface coating, the painting requirements and the heat treatment. Drawing samples are main solutions to the defective finished products.

Second, the buyers/customers must always understand the different factors which can greatly affect fluctuation of prices. Also consider the price of the materials and the currency exchange rate for this purpose.

The proper and correct die casting requirements can eliminate defects. If die casting is sound, it can also minimize shrinkage and make the finished products refined. It can improved the feeding characteristics, tear resistance, mechanical properties, pressure tightness, thermal treatment and the product appearance in which electrochemical, chemical and mechanical finishing are properly followed.

Aluminum die casting has a very important role in the growing aluminum industry globally. Although in the past, aluminium products which are the result of die casting are cooking utensils and its different decorative parts but in the present times aluminum die casting is used to produce different range of product specifications.

In the modern times, die casting process is needed for development of new products and to help foundries in their capability in making products for technical and commercial applications. Processing of molten metal, its solidification and development of its component properties are of great help to the foundries and the foundry men to make their production more reliable and economical and be more consistent in meeting the specific requirements.