EFFECT OF SPINNING CONDITIONS ON THE SHAP E OF METALLIC WIRES PRODUCED BY THE IN-ROTATING-WATER SPINNING METHOD

Metal wires of Pb, Zn and Fe77.5Si7.5B15 were produced by the In-Rotat ing-Water Spinning Method. The effects of drum velocity (5.2 similar t o 8.5 m/s), jet ejection velocity (3.8 similar to 11.4 m/s), incidence angle (30 degrees and 60 degrees) and nozzle diameter (0.1 and 0.2 mm ) as well as the kind of metals on the formation of a wire were examin ed. Pb showed the best spinnability among the tested metals, although the cross section was relatively flat and marked ripples were formed o n the wire surface when the incidence angle and the jet velocity were relatively large. A long, straight Fe77.5Si7.5B15 wire was produced wh en the jet velocity was a little higher than the drum velocity. A high er jet velocity was required for a smaller nozzle diameter d(n). The p roduced Fe77.5Si7.5B15 wire had a smooth surface and a round cross-sec tion. However, the wire showed a shape like a string of beads for d(n) =0.1 mm.