Different Types of Casting Processes

Casting is a manufacturing process wherein the liquified materials are poured into the mold until it hardens. Typically, this type of process is used for mass-producing complex parts that are used in various industries. It is more economical and faster compared to the other types of techniques that involve cutting or shaping.

Once the material has turned into a solid, then it’s time to remove them from the mold. It’s done and ready to use, or it may also go through the process of finishing treatments. The casting process is mostly used for creating different types of shapes. Other casting products are being used in different industries such as electronics, construction, aerospace, automotive, and others. There are various types of casting processes including investment casting, sand casting, and die casting,

Investment Casting

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What are the Advantages and Disadvantages of Investment Casting?

With investment casting, you can achieve high precision in dimension. It gives you a remarkable surface finish. There is no limit in its intricacy and almost any type of metal can be used. No need to remove any flashes.
Investment casting might be a great choice, however, there is a limitation on the size of the component. The patterns and molds that will be used are quite expensive. Labor costs are also costly.

What are the Advantages and Disadvantages of Investment Casting?

Sand Casting

This type of technique is usually used for producing large components. A melted metal will be poured into the hollow mold that is made from natural or synthetic sand. The hollow mold makes use of a pattern that is commonly made of wood or metal which has a similar dimension and shape of the original component.

The pattern should be a bit larger since the mold is also slightly larger. This can offset the contraction of molten metal once it has cooled down. The product from a sand casting usually has a rough surface.

Die Casting

In this method, the metal is pressed into the mold. Die casting is done with high pressure to make sure that the part is created with an accurate dimension and excellent surface finish. When components are created through die casting, it does not require any machining or perhaps only a bit of machining to obtain the required dimension.

Most often there is an issue of absorbency for large castings due to the entrapped air and the hardening of the metal before it gets to the edges of the mold. Die casting can precisely produce components that have similar wall thickness. Keep in mind that the molds used for die casting are a bit expensive since they are commonly created from hardened steel. This is necessary because the process will take longer to finish.

What are the Advantages and Disadvantages of Die Casting?

The parts that are being produced with die casting have extremely smooth surfaces. Here, you can achieve an accurate dimension and the production is fast.

However, it also has some drawbacks. For instance, the initial cost for die casting is a bit high. It will only accept nonferrous metals and there is a restriction on the size of the component.

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