All About Metal Castings

lion door

Metal castings have applications in jewelry-making as well as their many different industrial uses. Liquid metal poured into molds can be used to create intricate pieces of jewelry with leaves and petals, or large pieces of metal, like the door to an aircraft carrier.
Metal castings can be divided into two broad categories: expandable metal castings and non-expendable metal castings. The words expendable and non-expendable refer to the molds that are used to form the metal castings. Expendable metal casting molds are only good for one use, after which many of them can be recycled. Non-expendable metal casting molds can be used multiple times before needing to be replaced. Each of these broad categories can be further broken down into the different types of molds used in each category. Wax and sand are examples of expendable metal casting molds. Many non-expendable mold castings are made from metal themselves. Non-expendable processes include die casting and semi-solid casting.

    Metal castings can be divided into two broad categories: expandable metal castings and non-expendable metal castings. The words expendable and non-expendable refer to the molds that are used to form the metal castings. Expendable metal casting molds are only good for one use, after which many of them can be recycled. Non-expendable metal casting molds can be used multiple times before needing to be replaced. Each of these broad categories can be further broken down into the different types of molds used in each category. Wax and sand are examples of expendable metal casting molds. Many non-expendable mold castings are made from metal themselves. Non-expendable processes include die casting and semi-solid casting.

     In addition to the different categories of metal castings, anyone interested in the topic should take the time to learn the different words that go along with making metal castings. The process has a terminology all its own. When you learn how to make metal castings, you'll learn that the taper that allows you to pull the metal casting out of the mold is called a draft, and that the liquid metal trav-els through a complex gating system to reach the mold. The process isn't complicated, but learning the vocabulary is an important part of understanding it.

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