Effect of spinning conditions on the shape of metallic wires produced by the in-rotating-water spinning method

Metal wires of Pb, Zn and Fe_77.5Si_7.5B₁₅ were produced by the In-Rotating-Water Spinning Method. The effects of drum velocity (5.2∼8.5 m/s), jet ejection velocity (3.8∼11.4 m/s), incidence angle (30° and 60°) and nozzle diameter (0.1 and 0.2 mm) as well as the kind of metals on the formation of a wire were examined. Pb showed the best spinnability among the tested metals, although the cross section was relatively flat and marked ripples were formed on the wire surface when the incidence angle and the jet velocity were relatively large. A long, straight Fe_77.5Si_7.5B₁₅ wire was produced when the jet velocity was a little higher than the drum velocity. A higher jet velocity was required for a smaller nozzle diameter d_n. The produced Fe_77.5Si_7.5B₁₅ wire had a smooth surface and a round cross-section. However, the wire showed a shape like a string of beads for d_n=0.1 mm.