1.It has the wear resistance, hardness and good thermal conductivity 2.long useful life ,used in high-speed drawing of alloy Product Description
All natural diamonds are strictly selected, grinded and polished by ourselves. The production of our wire-drawing dies is based on special technical processes, which result in slighter attrition of our high-quality wire-drawing dies. Also as outcome of these special technical processes, our tungsten carbide enameling dies are characterized to have surpassing leak-tightness. Furthermore, our extrusion tips and extrusion dies are famed for their extremely high concentricity and precision.
| Reduction Angles & Bearing Length of Diamond Drawing Dies | |||||
| Area reduction | Lead/ Zinc/Argentine /Gold | Aluminum / Nickel / Copper | Brass / Bronze /Stainless steel | High carbon steel | Hot tungsten |
| 5-8% | 14° | 10° | 9° | 8° | 10° |
| 8-12% | 16° | 12° | 11° | 10° | 10° |
| 12-16% | 18° | 14° | 13° | 12° | 12° |
| 16-25% | 22° | 18° | 16° | 15° | 14° |
| 25-35% | 24° | 22° | 18° | 18° | 16° |
| Bearing length | 0.2 - 0.5d | 0.3 – 0.8d | |||
| Tolerance & Case of Diamond Drawing Dies | ||||
| Diameter | Tolerance | Roundness | Case | |
| inch | mm | mm | mm | mm |
| ≤ 0.0008 | ≤ 0.020 | 0.0006 | 0.0003 | Φ 25× 6 |
| 0.0008 – 0.0019 | 0.020 – 0.050 | 0.0006 | 0.0003 | Φ 25× 8 |
| 0.0020 – 0.0039 | 0.051 – 0.100 | 0.001 | 0.0005 | Φ 25× 8 |
| 0.0040 – 0.0079 | 0.101 – 0.200 | 0.001 | 0.0005 | Φ 25× 8 |
| 0.0080 – 0.0199 | 0.201 – 0.500 | 0.0015 | 0.0008 | Φ 25× 8 |
| 0.0200 – 0.0399 | 0.501 – 1.000 | 0.002 | 0.001 | Φ 25× 10 |
| 0.0400 – 0.0590 | 1.001 – 1.500 | 0.0025 | 0.0013 | Φ 25× 12 |
| 0.0591 – 0.0866 | 1.501 – 2.200 | 0.003 | 0.0015 | Φ 25× 14 |
| 0.0867 – 0.1299 | 2.201 – 3.300 | 0.004 | 0.002 | Φ 28× 16Φ 30× 16 |
| 0.1300 – 0.1810 | 3.302 – 4.600 | 0.005 | 0.0025 | Φ 28× 18Φ 30× 18 |
| 0.1811 – 0.2164 | 4.601 – 5.500 | 0.006 | 0.003 | Φ 43× 26 |
| 0.2165 – 0.3150 | 5.501 – 8.000 | 0.008 | 0.004 | Φ 43× 30 |
Polycrystalline Diamond Wire Drawing Dies
