| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a trolley wire with which the trolley wire excellent in wear resistance and electrical conductivity can be provided at a low cost. SOLUTION: Molten metal constituted of 1.5-2.5 mass% Ni, 0.3-1.0 mass% Si, 0.2-1.5 mass% Ag, 0.02-0.1 mass% P and the balance Cu with inevitable impurities, is prepared. This molten metal is cooled in a mold at≥8°C/sec cooling speed to obtain a cast material, and a cold wire drawing is applied to this cast material at≥75% working ratio to obtain a drawn wire material, and a heat treatment is applied to this drawn wire material at 400-550°C for 0.5-60 hr to obtain a heat-treated material. Then, a cold-working is applied to this heat-treated material at≥20% working ratio. COPYRIGHT: (C)2005,JPO&NCIPI
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