PROBLEM TO BE SOLVED: To provide a power supply roller securing desired conductivity between a power supply roller and a wire, and minimizing the variation of a voltage to stably supply power in composite plating, even when an abrasive is attached to the power supply roller or to the wire in the composite plating.;SOLUTION: In this saw wire manufacturing device by composite plating, the outer peripheral face of the power supply roller 10 is coated with a conductive fiber web 11.;COPYRIGHT: (C)2004,JPO
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