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The Advantages of Metal Casting

1. Wide suitability

The metal casting process is almost free from the restrictions of the size, thickness and shape of castings, casting wall thickness can be up to 0.3-1000mm, the length varies from a few millimeters to ten meters, and the quality can be from a few grams to more than 300t. The metal casting process is most suitable for the production of parts with complex shape, especially with complex cavity, such as complex box, valve, impeller, the engine cylinder, propeller, etc.

2. Available materials

The materials used in metal castings are widely existed. Almost any material can be melted into the liquid alloy can be used for casting, such as steel, a variety of aluminum alloy, copper alloy, iron alloy, platinum alloy castings and so on. For those brittle alloy materials with low plasticity (such as ordinary cast iron), casting is the only feasible forming process. In industrial production, cast iron is the most widely used material, with the account for more than 70% of total output.

3. Metal castings have a certain accuracy of size

Under normal circumstances, metal castings have more precise forming size than ordinary forgings and welding parts.

4. Low cost

overall economic performance, energy, material consumption of casting are less than other metal forming methods.

Metal castings are up to 40% to 80% of quality in general machinery, while the manufacturing cost is only 25% to 30% of the total cost of the machine.

The reasons for its low cost are as follows:

a. The production methods are flexible, the mass production can be organized as mechanized production.
b. The waste and old metal materials and renewable resources cab be used.
c. Compared with the forging, the metal casting has less power consumption.
d. Casting has certain dimensional accuracy, the allowance is small, and it saves processing time and metal materials.

The above analyses are the main advantages of metal casting, and they are also the main reasons that make metal castings so popular.

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Butterfly Valve Body

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