| 摘要 |
PROBLEM TO BE SOLVED: To provide a diamond die capable of restraining disconnection.SOLUTION: A wire rod passes through a bell 16b in a diamond die 1, an approach 16c, a reduction 16d, a bearing 16e, a back relief 16f and an eject 16g along the axis in this order, and a cross-sectional shape of the bell 16d and the approach 16c is a disk shape, and an opening angle of a bottom surface 11b of a disk is 180°±20°, and in a cross section along the axis of the bearing 16e, assuming the length in the axial direction of the bearing on the short side as A and the long side as B, the relationship of (B/A)<1.1 is established.SELECTED DRAWING: Figure 1 |
