High production output, efficiency and quality in the production of copper wire
Xinjiang Amer Qian Golding Cable Co., Ltd. from China, a subsidiary of Amer Group, produces copper wire on a a CONTIROD® casting and rolling plant from SMS group. The new plant of the CR-3500 type has been the fourth plant for the Amer Group over the last decade.
The high-performance wire rod line CR-3500 is designed for the production of up to 35 tons of ETP copper wire (Electrolytic Tough Pitch) per hour corresponding to an annual production output of about 225,000 tons.
For the CONTIROD®* CR-3500 SMS group employs state-of-the-art technologies, for example Lambda control on the shaft furnace, frequency-controlled three-phase drives, and deoxidation and cooling line with separate media circuits. The above features enhance the comprehensive process efficiency while product quality is improved at the same time. Fuel, working material and power consumption can be significantly reduced. As a result, CONTIROD®* is marked with the SMS group ecoplants label.
In addition to the proven Lambda control, an improved charging and distributing system for cathodes and return scrap is employed on the shaft melting furnace. This technology minimizes the consumption of natural gas by efficient heat transfer and increases product quality.
Molten copper is continuously cast in an almost horizontal way via the Hazelett twin-belt caster to a casting ingot with a cross-sectional area of 6,510 square millimeters. A homogeneous casting structure and an even oxygen distribution in the casting ingot are key factors for a high-quality wire rod. A chamfer plane and a spraying unit optimally prepare the casting ingot for the additional rolling process.
In the rolling line with altogether twelve individually driven mill stands the rectangular casting ingot is rolled down to eight millimeters round wire. Due to a specific force control from the individual mill stands, a top wire quality with fine-grained homogeneous rolling structure can be attained.
*CONTIROD® is a registered trademark of Aurubis Belgium.