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Different Metal Precision Casting Molds
2016-03-22

It is known to us all that metal Precision Casting is widely used in different manufacturing plants to create the parts which are necessary to build components. Although the creation of production parts might sound simple, it takes great knowledge to manufacture the parts correctly. Generally speaking, metal casting is the process where a molten metallic substance is poured into a mold to cast specific parts. The framework is often a complex geometric shape and may usually be made of ceramic, sand, or metallic components. Besides, aluminum, magnesium, iron, zinc, copper, and steel are common substances that used to cast parts.

In general, there are two main types of casting mold designs, say, open and closed.

An open mold is a cup like apparatus that is in the shape of the desired part. The liquid is poured into the container and then left open to the environment during the cooling process, as there is no top to the structure. Even though it is one of the two main types of designs, it is seldom used for manufacturing quality part.

The other type of design is known as the closed mold. This design has a delivery system, allowing you to pour the liquid into the structure. The liquid is not exposed to the elements during the cooling process. These frameworks are used in part manufacturing.

Meanwhile, one other design, known as the core, is generally used in only special cases. Some parts require an internal geometric pattern and that is what this is used for. Like a traditional construction, the core is an inverse replica of the part needed. During the metal casting process, the core remains within the structure and may be supported by chaplets to prevent moving or shifting.

In addition, you can either choose to make a permanent or expendable frame when you are making a metal casting structure.

A permanent construction can be used to manufacture any part. Typically, these are constructed from a metallic component or ceramic. These are designed to be opened and closed so that you can easily remove the parts. Because they are reusable, they can save money. These do have a downside, as you will be limited on the designs you make because they have to be opened and closed.

On the other hand, expendable options give you a chance to make more intricate geometric shapes to cast. These forms are made of sand, plaster, or a similar material. However, these can only be used once because you have to destroy them to get the part out. This can become expensive over time. While if you want to use an expendable mold to manufacture several parts of the same design, you must have a pattern of the interior cavities in order to remake the frame. This pattern is usually made of wood, plastic, aluminum, steel, or cast iron. And it should coated with a releasing agent that allows the expendable frame to be easily removed.

All in all, metal casting molds can be made in all shapes and sizes. Remember that you must slightly oversize any frame and pattern to allow for the shrinkage that will occur during the solidification process.