Production technology of oxygen-free copper rod

Oxygen-free copper rod is generally produced by up-lead continuous casting, and the oxygen content is generally below 20ppm. Oxygen-free copper rods are pure copper without oxygen or any deoxidizer residue, but actually contain very trace amounts of oxygen and some impurities. According to the standard, the oxygen content is not more than 0.02%, the total impurity content is not more than 0.05%, and the purity of copper is more than 99.95%. Its production process is the metal in induction furnace after melting through graphite mold lead up continuous casting, and then cold rolling or cold working.

Oxygen-free copper rod is pure copper without oxygen and without any deoxidizer residue. But it actually contains very small amounts of oxygen and some impurities. According to the standard, the content of oxygen is not more than 0.02%, the total content of impurities is not more than 0.05%, and the purity of copper is more than 99.95%. According to oxygen content and impurity content, oxygen-free copper rod is divided into TU1 and TU2 copper rod. TU1 oxygen-free copper rod purity 99.99%, oxygen content is not more than 0.001%; The purity of TU2 oxygen-free copper is 99.95%, and the oxygen content is no more than 0.002%.

Product identification method:

Oxygen free and low oxygen copper wire from oxygen content is easy to distinguish, oxygen free copper is oxygen content in 10-20 PPM below, but some manufacturers can only do 50 PPM below, low oxygen copper rod in 200-400 PPM, oxygen content is generally controlled at about 250 PPM, oxygen free copper rod is generally adopted is lead method, low oxygen is continuous casting and rolling, The two products are relatively more suitable for the performance of enameled wire, such as softness, rebound Angle, winding performance. But relatively low oxygen bar to drawing conditions to be ruthless, stretching 0.2 filaments, same if wire drawing condition is not good, ordinary anaerobic rods korah and good low oxygen break line, but if in good condition of wire drawing, the same pole, low oxygen bar maybe can pull to double zero 5, and ordinary maximum tensile anaerobic rods to 0.1, Of course, the finest ones, such as double zero two, have to rely on imported oxygen-free copper rods. There are enterprises trying to use peeling way to deal with low oxygen rod to stretch 0.03 line, sound line generally like to use oxygen rod, this and oxygen rod is single crystal copper, low oxygen rod is polycrystalline copper.