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Gravity Casting | What Are Sand Castings?

Sand casting is a form of gravity casting where sand is used as the mold material. A sand casting is a relatively inexpensive casting process and can be used for producing either large or small parts.

How Sand Castings Are Made

The first step in the sand casting process is to create the mold itself. The sand mold is formed by packing sand into the mold. When the mold is removed, what remains is the cavity that will form the casting.

After the mold has been made, it is prepped for the molten metal to be poured. The surface of the cavity is lubricated to help in the removal of the casting. The mold halves are closed and securely clamped together.

Once the mold is securely clamped, the molten metal can be poured. The pouring can either be done manually by using a ladle or by a machine. Enough metal must be poured to fill the entire cavity.

As soon as the molten metal is poured into the mold it will begin to cool and harden almost immediately. One the entire cavity has been filled and hardened, the final casting is formed. Once that happens, the sand mold can be broken and the casting can be removed. The process, called shakeout, is usually performed by a vibrating machine that shakes the sand and casting out.

The final step is trimming. During the cooling process, the material will solidify and attach to the part. The excess material must be trimmed.

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Who does gravity casting?

Castings | What Are Sand Castings?

A casting is a type of metal component that is vital to countless industries. They are created through the casting process, which consists of pouring molten metal into a mold and then allowing it to cool and solidify. The casting process is extremely versatile and offers the freedom to form intricate metal parts. Due to the versatility of cast parts, there are a wide-range of casting types. Some popular casting types include investment castings, heat resistant castings, and sand castings. Today we will explain sand castings so you can decide whether or not these metal components can benefit your next project.

Sand Castings: Explained

A sand casting is different from other cast parts because it uses sand as the mold material. The sand is typically mixed with a bonding agent, such as clay, and is then moistening with water or another liquid in order to create the appropriate mold strength and plasticity. The surface of a sand casting might not be as smooth as other casting types. However, its rough surface and minor imperfections can be easily fixed with machining. Sand castings are one of the most common cast parts and can be utilized for both short-run and long-run productions. Some of the appealing advantages of this type of casting include its cost effectiveness, easy to change design, and manufacturing speed, just to name a few.

If you’re interested in using sand castings, or any other type of cast parts, for your next project, contact us. At Ferralloy, Inc. we can provide you with the highest quality metal components at a competitive price and delivered on time. If you are interested in learning more about our sand casting capabilities, or are interested in getting a quote for your next project, contact our international company today! We can answer your questions and help you get the best parts.