Natural diamonds, abbreviated as ND, are naturally formed within the earth at high-pressure and high-temperature conditions. Because of its extremely rigid lattice, it can be contaminated by a few types of impurities such as boron and nitrogen.
MN Dies strictly control diamond selection, crystal orientation,diamond grinding,mount,laser drilling,lathe case,ultrasonic polishing,wire polishing, geometry inspect
This laser drilling machine is a computer control programmable and can make the hole according to different request of hole profile and reduction angle.The advantage is stable laser beam, less burn and consistent profile.
MN Dies supply semifinished and finished nature diamond dies.
| Nib material | ND
|
PCD
|
TC
|
SSCD
|
| Size range availability (1) | ||||
| Min. | 0.007 mm | 0.040 mm | 0.127 mm | 0.007 mm |
| Max. | 2.0 mm | 35.0 mm | n/a | 2.150 mm |
| Approx. relative durability (2) | ||||
| Non-ferrous | 17 – 33x | 50 – 500x | 1x | 17 – 33x |
| Ferrous | 4 – 9x | 8 – 70x | 1x | 4 – 9x |
| Approx. relative price (3) | ||||
| 0.460 mm | 5x | 3 – 8x | 1x | 3x |
| 1.001 mm | 15x | 7 – 8x | 1x | 15x |
| 10 mm | – | 20 – 26x | 1x | – |
| Physical properties (4) | ||||
| Elastic modulus | 700 – 1220 | 850 – 1150 | 450 – 650 | 1120 |
| Thermal conductivity | 300 – 1000 | 500 – 600 | 100 | 800 – 2000 |
| Item | Soft wire product | Hard wire product |
| Bell angle (α) | 70°±20° | 60°±20° |
| Approach angle (β) | 35°±5° | 30°±5° |
| Reduction angle (γ) | 18°±2° | 12°±2° |
| Bearing length (D) | 20-50 | 40-60 |
| Back relief angle(θ) | 20-50 | 15°±5° |
| Exit angle (φ) | 50°±20° | 50°±20° |
Typical Markets:Magnet wire, tungsten wire, plated-copper wire, stainless steel wire and precious metals wire.
Used in fine and ultrafine wire sizes, or for drawing wire of critical surface quality.
ND dies are frequently used for drawing:
