Metal casting

Metal casting is a long-standing manufacturing process. It involves pouring liquid metal into a mold, waiting for the liquid metal to harden into the desired shape, then cooling it and removing it from the mold.
Modern metal casting is precise, automated, and supplemented by advanced tools, but its principles remain unchanged. Its widespread use proves the success of this method.
Operation mode
The metal casting process starts with mold making. Before pouring liquid metal, the pattern will form a partially shaped hollowed out part in the mold. Modern plate making methods use precise calculations to achieve the desired shape, which can include scaling to consider shrinkage and preparing excess material thickness for later CNC precision machining.
In many cases, molds can be damaged during the casting process. This is a foreseeable step in sand casting, where the castings formed by sand are decomposed to expose the finished product. New sand casting molds are easy to make and sand is often recycled to manufacture new molds.
Metal casting may also involve the use of wax in a process called investment casting. The manufacturer first establishes a wax model of the final product. Before the wax is heated and removed, it is covered by a ceramic layer, which shapes a mold with patterns shaped by the wax inside.
Both of these technologies have their own advantages. For example, sand casting is a simpler process and is easy to replicate. Investment casting requires more preparation work, but may perform better in manufacturing complex parts. Sand casting usually has higher costs; And investment casting requires more labor to change the established design. Manufacturers must determine the best usage process based on their budget and labor constraints, as well as the quality of the parts they want.
Metal casting materials
Metal casting is a universal process. It supports any metal disc component that can be achieved in liquid form, which is why engineers from various industries use various materials in metal casting. Aluminum, magnesium, and copper alloys are the most common alloys, but manufacturers also use zinc, steel, and other metals.
Casting Use Cases and Industry
Almost all commercially produced mechanical equipment today uses some form of casting. In mass production, casting is usually superior to CNC machining in terms of cost and output. Metal casting can create high threshold structural components for various use cases, such as washing machines, cars, metal pipelines, etc. Metal castings are widely used.