In casting, a core is a component used to shape the interior of a cast part. Cores are typically made of a material that can be easily removed from the cast part after it has solidified. The core is placed inside the mold prior to pouring the liquid material, and it remains in place while the material solidifies. Once the material has hardened, the core is removed, leaving a cavity in the interior of the part that corresponds to the shape of the core.
Cores are commonly used in casting to create complex interior geometries that would be difficult or impossible to achieve with a single piece mold. For example, a cast part may need to have an interior passage or a series of interconnected cavities. In such cases, a core can be used to shape the desired interior geometry.
There are several types of cores used in casting, including sand cores, metal cores, and foam cores. Sand cores are the most common and are made from a mixture of sand and binders. Metal cores are used for high-temperature applications and are made from metals such as iron or steel. Foam cores are lightweight and are commonly used for lightweight or complex geometries.
In summary, cores are an important tool in the casting process, allowing for the creation of complex interior geometries and shapes in cast parts.
