Customized Copper Round Bar H57 H58 H59 For Industrial Machinery

Copper rods are much more widely used than pure iron. Every year, 50% of copper is electrolytically purified into pure copper for use in the electrical industry. The red copper mentioned here must be very pure, with a copper content of more than 99.95%. A very small amount of impurities, especially phosphorus, arsenic, aluminum, etc., will greatly reduce the conductivity of copper. Oxygen in copper (a small amount of oxygen is easily mixed in copper smelting) has a great influence on conductivity, and the copper used in the electrical industry must generally be oxygen-free copper. In addition, impurities such as lead, antimony, and bismuth will prevent the crystallization of copper from combining together, resulting in hot embrittlement, which will also affect the processing of pure copper. This kind of pure copper with high purity is generally refined by electrolysis: impure copper (ie blister copper) is used as the anode, pure copper is used as the cathode, and copper sulfate solution is used as the electrolyte. When the current passes, the impure copper on the anode gradually melts, and the pure copper gradually precipitates on the cathode. The copper obtained in this way has a purity of 99.99%.