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About The Investment Casting Technique - Metal Casting

Number of visits: Date:2013-6-20

Investment Casting is just one of the methods that have been formulated to shape and manufacture items and parts over the years. The use of Casting as a manufacturing process by which a liquid metal is typically poured into a mold, which incorporates a hollow cavity of the required shape, and then permitted to solidify has allowed for the reproduction of identical objects when created from the same original mold (or mould).

The final result or solidified component is also known as a “casting”, which is removed from the mold (at times broken out of the mould) to complete the metal casting activity. Despite the fact that the material utilized in casting are generally metals, other materials for example, plaster, epoxy, concrete and clay are sometimes used.

The technique of Casting is therefore ideal for creating and reproducing complex designs and objects that would usually be either too expensive or too complex to make.

The technique of Casting has been with us for a very long time (over 6000 years) and it is even now continuously being developed and refined with new composites and metals that are capable of withstanding a tremendous spectrum of temperature and pressure tolerances.

The specifics of Metal Casting involve the process of the design and engineering of the target mould. The skills and instruments required for mold construction are in themselves a comprehensive area which is covered in other articles. But let us assume that the required mold has been developed that incorporates a hollow cavity of the required style and size and has been manufactured from a substance that has the characteristics to withstand the temperature and pressure of the molten (or liquid) metal to be poured into it.

For the duration of the solidification activity, the target product takes shape and as soon as completely cooled or set the product is then ready for removal from the mold ready for the final process. It is during this cooling process that any anomolies will happen and great care is taken over gas porosity and shrinkage throughout this key phase of building the metal casting. Once the cast has been created, depending on the application of the item, the finishing activity will get rid of any aberrations and apply the necessary polishing. This final target product is often known as the casting.

Added to this elementary definition of Metal Casting there are various categories of this process, namely Expendable and Non-expendable Casting which can be further sub divided by the material used for the mold and the pouring method used to create the metal cast.

Examples of these sub-categories are Sand Casting, Lost Wax, Gravity, Vacuum and Low Pressure Casting. All of these approaches have been developed and improved over the centuries to offer a broad choice of methods with their resultant casts they are ideally suited to deliver the cost effective production of a metal object that would normally be too complex to create in any other way. For that reason the oldest surviving metal casting (a frog from 3200BC) was just one of several items that its creators manufactured using Metal Casting when no other manner seemed possible, and this carries on right now.

TypeInfo: Industry Info

Keywords for the information:Metal Casting  Investment Casting  Steel Casting  Aluminum Casting Companies  Metal Casting  Die Casting 


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