In foundries, metal is melted and poured into molds that are a negative of the final molded part. Often, the molds are expendable and are destroyed after each part is cast. Examples of expendable mold castings are sand, plastic, shell, plaster, and investment (lost-wax technique) moldings. Foundries cast parts out of steel, aluminum, and other metals using different casting methods depending on the part’s production rate, the intricacy of the finished part, and the metal being cast. The most common casting methodologies are sand casting, investment casting, ceramic mold casting, lost foam casting, among other foundry applications. Each of these uses a different type of mold, and all require heating in an industrial oven at one or more stages in the process.
In sand casting, for example, the sand molds are coated with a release agent (core “wash”) on the interior, which is dried in an oven prior to molding. Ceramic molds are dried in an oven to remove absorbed moisture. Metalcasting is used to manufacture engine blocks, automotive steering components, transmission housings, pistons, agricultural equipment, and many others. The most commonly processed metals are aluminum and cast iron, however, there is still a fair amount of bronze, brass, steel, magnesium, and zinc being produced in foundries.
Wisconsin Oven designs and manufactures standard and custom batch and conveyor ovens specifically for casting processes and are built to last in the demanding foundry environment.