Eastern Copper :: Production Process

• Casting
• Drawing
• Forging
• Extrusion
• Hot Rolling
• Machining
• Cold Rolling

Other operations such as Annealing, Pickling, Winding, Straightening or Cutting
to length are needed in each process for the manufacture of the semi-finished products.

Continuos extrusion
Eastern Copper uses the Continuous Extrusion process, which is a unique process for copper sections. Oxygen Free/ETP Grade Copper Wire Rods are used as feedstock into the Continuous Extrusion machine. The copper rod is passed into the rotating extrusion wheel and fed into the extrusion zone, where pressure and temperature encourage the material to plasticize, making it available for extrusion.
At this point the material is introduced into a die chamber and is forced to extrude through a die suitably designed for the section required. The pressure and temperature required for extrusion are principally generated by main drive motor, which turns the extrusion wheel. The copper rod is extruded to size, as per customer's specification such as copper bars, rod, profiles, or copper tapes. While hot, the copper is quenched directly to water, resulting in grain structure, a process superior to any other, which prevents oxidation of the surface.