Gravity casting refers to the process of injecting molten metal into the mold under the action of the gravity of the earth. Also known as casting. Gravity casting in a broad sense includes sand casting, metal casting, investment casting, mud casting, etc.

  Gravity casting in a narrow sense refers specifically to metal casting. This article focuses on the main advantages and disadvantages of gravity casting.

  Gravity casting has molds that can be reused many times. Every casting of liquid metal endows a casting with long life and high production efficiency. Metal mold castings not only have good dimensional accuracy and smooth surface, but also have the same casting strength as sand molds and are not easily damaged.

  However, gravity casting also has certain defects: due to the high processing cost of the heat-resistant alloy and its hollow cavity, the mold manufacturing cost is relatively high. Therefore, for small batch production, the cost allocated to each product is obvious. It is too high and generally unacceptable.

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