1. A steel mold is sufficient when pulling soft metals (such as gold and silver), and the steel mold can have multiple holes with different diameters.
2. Tungsten carbide die-drawn steel wire (steel wire) generally uses a tungsten carbide die (Tungsten carbide nib). The typical structure of this die is a cylindrical (or slightly tapered) cemented carbide die core. The ground is embedded in a circular steel case. The inner hole of the mold core has Bell radius, Entrance angel, deformation (working) cone (approach angle), sizing belt (bearing) and Exit angle (back relief).
3. Steel wire dies-for drawing non-ferrous metal wires, such as copper and aluminum, wire drawing dies similar to steel wire dies are often used, and the shape of the inner hole is somewhat different.
4. Polycrystalline molds-Polycrystalline molds (man-made diamonds) can be used to draw thin wires, as well as wire drawing molds that use natural diamonds.
