Basic Characteristics and Types of Drawing Dies

The center of all drawing dies has a hole of a certain shape, round, square, octagonal or other special shapes. When the metal is pulled through the die hole, the size becomes smaller, and even the shape changes. Basic categories 1. When pulling soft metals (such as gold and silver), the steel mold is sufficient. There can be multiple holes with different apertures on the steel mold. ? 2. Cemented carbide die Tungsten carbide nib is generally used for drawing steel wire (steel wire). The typical structure of this kind of die is a cylindrical (or slightly tapered) cemented carbide die core closely embedded in a round steel case. There are bell radius, entrance angle, deformation (working) cone Calibrating band (bearing) and back relief. 3. Steel wire mould - drawing non-ferrous metal wires, such as copper and aluminum, also use drawing dies similar to steel wire moulds, and the inner hole shape is somewhat different. 4. Polycrystalline die - the thin wire can be used for polycrystalline die (artificial diamond), and wire drawing die for natural diamond. Note: The article comes from the network. If there is infringement, please contact to delete it