Date: 2026-11-10 hits: 105
Manufacturing Process
1. PCD blank preparation: Polycrystalline diamond composite blanks (diamond layer + tungsten carbide substrate) are cut and sliced according to die specifications.
2. Rough machining of blank: Turn and grind outer profile, insert blank into steel / carbide die casing for fixation.
3. Pre-hole drilling: Make initial through-hole by laser drilling, EDM or ultrasonic grinding to form basic bore profile.
4. Fine bore profiling: Use diamond lapping compound to grind inlet, lubrication zone, reduction zone, sizing zone and exit section by section. Control reduction angle, bearing length, concentricity and surface finish.
5. Cleaning & inspection: Remove lapping residues, inspect aperture, concentricity, inner-bore finish and appearance, mark and complete final inspection before storage.
Main Advantages
1.Extremely high wear resistance and long service life, much better than conventional carbide drawing dies, reducing die-change downtime and die consumption cost.
2. Stable wire dimension. Bore wears slightly during long-time drawing, maintaining tight wire outer diameter tolerance.
3. High inner-bore finish delivers smooth wire surface with fewer scratches, lowers wire breakage rate and improves electrical performance of copper & aluminum wire.
4. Suitable for high-speed drawing for copper, aluminum, steel and other metal wires, boosting production efficiency.
5. Excellent thermal stability, not easy to soften and deform under drawing heat.
