Comparison of the advantages and disadvantages of several drawing die materials

       Alloy steel drawing die-easy to manufacture-poor wear resistance, short life-basically eliminated
Natural diamond-high hardness, good wear resistance-brittleness, difficult to process-wire die with diameter less than 1.2mm
Cemented carbide-good polishing performance, low energy consumption-poor wear resistance, difficult to process-various diameter wires
Polycrystalline synthetic diamond-high hardness, good wear resistance-difficult to process, high cost-small wire, wire
CVD coating material-high smoothness, good temperature resistance-complex process, difficult to process-small wire, wire
Ceramic materials-wear resistance, high temperature resistance, good corrosion resistance-thermal shock, poor toughness, difficult to process-no large-scale application
In the drawing process of small wire and wire, natural diamond, polycrystalline diamond and CVD coating die are commonly used wire drawing die materials. When drawing small diameter wires, the CVD coated diamond die overcomes the anisotropy of the natural diamond die, and at the same time has excellent strength and hardness, the highest drawing output, and the surface quality also meets the requirements. Tests have proved that the life of CVD coated diamond wire drawing die is equivalent to that of natural diamond die, the product qualification rate is high, and the surface quality is better than domestic polycrystalline diamond. Therefore, CVD coated diamond wire drawing die is an ideal choice for small diameter wire drawing.