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Natural diamond (nd) is formed naturally in the earth's crust under high temperature and high pressure.It is the most hard material in known materials.Due to its extremely rigid lattice structure,impurities such as boron or nitrogen may be infiltrated into the formation process.
Natural diamonds (nd) are carefully selected,no impurities,no cracks,high hardness and wear resistance to ensure a long service life of the mold.
The Selection of Natural Diamond Dies
New Die Range |
Recut Range |
|||
mm |
inches |
stone# |
mm |
inches |
0.050-0.099 |
0.0019-0.0039 |
1# |
0.100-0.200 |
0.0039-0.0079 |
0.100-0.199 |
0.0039-0.0078 |
2# |
0.201-0.300 |
0.0079-0.0118 |
0.200-0.299 |
0.0079-0.0118 |
3# |
0.301-0.400 |
0.0119-0.0157 |
0.300-0.399 |
0.0118-0.0157 |
4# |
0.401-0.500 |
0.0158-0.0197 |
0.400-0.499 |
0.0157-0.0196 |
5# |
0.501-0.600 |
0.0197-0.0236 |
0.500-0.599 |
0.0197-0.0236 |
6# |
0.601-0.700 |
0.0237-0.0276 |
0.600-0.799 |
0.0236-0.0315 |
8# |
0.801-0.900 |
0.0315-0.0354 |
0.800-0.999 |
0.0315-0.0393 |
10# |
0.901-1.099 |
0.0355-0.0433 |
1.000-1.199 |
0.0394-0.0472 |
12# |
1.101-1.299 |
0.0433-0.0511 |
Natural diamond is the material with the best surface finish of all materials.Its high hardness and wear resistance ensure the service life of the die.Among all materials,the thermal conductivity is the highest.It can be used in high temperature processing process.It can withstand temperature up to 1700 degrees.It is easy to debug and smooth in the drawing process.
Tolerance
Diameter(inch) |
Diameter(mm) |
Tolerance(mm) |
Roundness(mm) |
≤0.00157 |
≤0.040 |
0.0003 |
0.0002 |
0.00158-0.00393 |
0.041-0.099 |
0.0005 |
0.0003 |
0.00394-0.01968 |
0.100-0.499 |
0.001 |
0.0005 |
0.01969-0.03936 |
0.500-0.999 |
0.0015 |
0.0008 |
0.03937-0.05905 |
1.000-1.499 |
0.002 |
0.001 |
0.05906-0.08661 |
1.500-2.199 |
0.003 |
0.0015 |
0.08662-0.12992 |
2.200-3.299 |
0.004 |
0.002 |
0.12993-0.18110 |
3.300-4.599 |
0.005 |
0.0025 |
0.18111-0.22834 |
4.600-5.799 |
0.006 |
0.003 |
0.22835-0.29921 |
5.800-7.599 |
0.007 |
0.0035 |
0.18111-0.41338 |
4.600-10.499 |
0.008 |
0.004 |
The natural diamonds we use are strictly selected to ensure their purity.
The natural diamond wire drawing die is made of high quality die core,which has the advantages of uniform texture,strong wear resistance,high finish,high precision and long service life.It can ensure the surface finish and accuracy of wire rod and the production range of die inner diameter in the long drawing process 0.03mm-2.00mm.
Typical Die Reduction Angles for Various Metals
Elongation |
Area Reduction |
Lead Zinc Silver Gold |
Hard-Alalloys Nickel Copper |
Brass Cualloys Stainless Steel |
High Carbon Steel |
Hot Drawing of Tungsten |
5-9% |
5-8% |
14 |
10 |
9 |
8 |
10 |
9-14% |
8-12% |
16 |
12 |
11 |
10 |
10 |
14-19% |
12-16% |
18 |
14 |
13 |
12 |
12 |
19-33% |
16-25% |
22 |
18 |
16 |
15 |
14 |
33-54% |
25-35% |
24 |
22 |
18 |
18 |
16 |
Tolerance of Reduction Angle:+/-2°
Natural diamond (ND) wire drawing dies is mainly used for drawing fine and ultra-fine wires,or it is widely used in applications requiring excellent wire surface finish and good heat dissipation performance.
