All About Metal Casting

The term "metal casting" is a reference to the procedure of making parts or products from melting metal, employing any mold that can control its final form.

A metal casting, on the other hand, is a product or part resulting from the metal casting process. You can also get more information about sand casting online.

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General Steps of Metalcasting are:

1. Create the master pattern and core box

The first step in metal casting is to create an object with a similar shape to that of the desired product, called a pattern. The pattern is a tool used to produce the mold and must be slightly larger than the final product to account for shrinkage during solidification. 

In metal casting, patterns are often produced through CNC machining. Similarly, cores, as outlined in Step 2, are created using another type of tooling: core boxes. 

2. Create the mold and core

To successfully produce a casting, the manufacturer must first create a mold cavity to contain and form the molten metal. 

In many cases, they must also produce a core that fits inside the mold, forming hollow cavities inside the final part. Molds and cores can be reusable, as in the case of die casting or permanent molding, or single-use, as in greensand casting or shell mold casting.

3. Melt the alloy

Next, the manufacturer must melt the metal. Often the metal used is an alloy, or a mixture of elements that, together, provide optimal mechanical properties. 

Melting processes vary: in its simplest form, melting consists of placing alloy in a receptacle with a higher melting point and heating it over a burner or open flame.