| 摘要 |
PURPOSE:To make a wire strand free from undue stress and twists and to improve productivity by juxtaposing cassette roller dies wherein the axial lines of roll dies are combined alternately at right angles and drawing the formed wire strand contg. a specific weight ratio of flux. CONSTITUTION:A formed wire strand 2 produced by forming a steel strip to a U shape, packing 20-40% weight ratio of flux in the inside and forming the same to a circular shape is uncoiled from a feed reel 1 and is drawn to a fine wire. Here, >=2 blocks of cassett roll dies 3 wherein a pair of rolls with small diameter grooves are set by deviating their rolling down directions alternately by each 90 deg. are arranged in series in combination with capstans 4, by which the strand 2 is drawn stepwise. |
