Inclusion, oxygen content fluctuation, difference between surface oxides and possible hot rolling defects
The tension of oxygen-free copper rod is superior to that of oxygen-free copper rod in all wire diameters.In addition to the above organization reasons, oxygen-free copper rod has less impurities, stable oxygen content and no defects that may be caused by hot rolling. The thickness of oxide on the surface of copper rod can reach ≤15A.In the process of continuous casting and rolling production, if the process is unstable and the oxygen monitoring is not strict, the unstable oxygen content will directly affect the performance of the rod.If the oxide on the surface of the rod can be compensated in the continuous cleaning of the subsequent process, the situation will be better. However, the more troublesome thing is that quite a lot of oxides exist in the "subcutaneous", which has a more direct effect on the wire pulling and disconnection.Therefore, in the process of drawing the micro-fine line and the micro-fine line, in order to reduce the disconnection, sometimes we have to take the last way to the copper rod-peeling. Even twice peeling, the purpose is to remove subcutaneous oxides.
Post time: Apr-14-2020