| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing an inexpensive oxygen free copper material having a low softening temperature and a high electric conductivity, and to provide a copper material. SOLUTION: As for this method for producing the copper material, in a method for directly producing the copper material from the molten metal of oxygen free copper using an upper drawing continuous casting apparatus, Nb is added to the molten metal of oxygen free copper stored by a molten metal storing means in the upper drawing continuous casting apparatus, and the ratio of Nb included in the molten metal of oxygen free copper is controlled to 0.0006 to 0.06 wt.%. COPYRIGHT: (C)2009,JPO&INPIT
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