A fully cooled cast iron piece is then ejected from the mold. Pouring may be use gravity, a vacuum or pressurized gas to completely fill the mold which is then allowed to cool.Ĭooling is carefully controlled to encourage the development of the internal microstructure of a cast part or component.
Molds may also have core processes for the creation of parts and products with cavities or reentrant angles. The latter have a top portion known as a cope and a lower section called a drag. These molds are solid or split pattern, meaning composed of one or two pieces. The high heat also refines the melt which is then poured into a mold by hand or automatically.Īny number of casts can be made and housed at a given foundry for continuous or one time use. A specialized blast furnace known as a cupola is used to achieve the temperatures necessary to melt iron and additives such as scrap steel and iron.
The proper elemental and chemical composition is produced during the melting stage of casting.
The processes undertaken at an iron foundry begin with a selection of materials. Iron foundries draw business from such versatile industries as automotive, agriculture, water and sewage treatment, irrigation, ventilation, hydraulics, manufacturing, machinery building, electronics, transportation, construction and building. While some process several metals rather than just iron, it is often beneficial to have a specialty in order to stay relevant within the highly competitive field of metallurgy.
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