Copper, historically the second metal used after iron, has been present since prehistoric times, believed to have been utilized around 4000 BC. The use of copper-tin bronze is known to date back to around 2400 BC. The production of bronze during this time marked a significant stage in the history of civilization, as it allowed for the full utilization of superior mechanical properties of metal in everyday tools. The alloy brass, consisting of copper and zinc, is estimated to have been used before the Roman Empire.
Sand Casting: Sand casting is one of the most widely used casting methods. It involves pouring molten metal into a compressed sand mold to obtain the void in the desired shape. A tree or metal model close to the final cast shape is used to achieve the mold's void. The compressed sand model is tapered to avoid deformation during model removal.
Basic stages of sand casting:
Centrifugal Casting: Centrifugal casting is used in the production of large structures with even inner and outer surfaces, such as oil transmission pipes, water pipes, or tanks for storing milk or chemicals. It has become quite common in the manufacturing of streetlight poles for lighting streets. It is also used in the casting of deep-drawn molds of stainless steel sheets.
Shell Moulding Casting: Shell molding is an improved form of sand casting where molten metal or alloy is poured into a very thin shell mold. It involves making a metal model of the two halves of the part to be cast, attaching them to a plate. The metal plate, along with sprues and risers, is heated to 250-350 °C. A specially prepared mixture of sand and organic resin is brought into contact with the heated model to obtain a two-piece shell mold. The two halves are brought together, and molten metal or alloy is poured inside. Parts cast with this method have very clean surfaces.
Permanent Mould Casting (Die Casting): In this casting method, molten metal is poured into metal molds. Before casting, metal molds are heated, and their inner surfaces are coated with special mold paint using an EN 10204 3.1 certificate. This casting method is more economical than sand casting.
Copper is utilized in various applications, including:
If you are looking for a copper production company, Sağlam Metal is among the best ones. We conduct sales of copper and copper alloys for the Turkish and global markets.