MANUFACTURE OF HIGH CONDUCTIVITY AND HIGH STRENGTH STRANDED WIRE

摘要

PURPOSE: To obtain a stranded wire with the improved conductivity, strength, and straightness, by annealing a copper, applying a wire drawing process, stranding plural wires into the stranded wire, continuously heating and cooling the stranded wire in a straight line condition, and then winding it. ;CONSTITUTION: After a copper or a copper alloy wire is annealed, a wire drawing process is applied at the room temperature the processing rate 905 or more, and plural copper or copper alloy wires after the wire drawing process are stranded into a stranded wire. Then, the stranded ire is continuously heated and cooled in a straight line condition, and then, it is wound into an objective stranded wire. In this case, since a distortion is generated by winding a high strength stranded wire, it is favorable to continuously heat and cool the stranded wire in an unwound straight line condition and to wind it after that. As the copper alloy, a copper alloy wire including 0.1 to 0.9% of Sn, and Cu and the unavoidable impurities of the remaining part, or a copper alloy including 0.1 to 0.5% of Zn, 0.05 to 0.5% of Mg, and Cu and the unavoidable impurities of the remaining part, is used favorably.;COPYRIGHT: (C)1994,JPO&Japio