There are three kinds of material used for wire drawing dies:
TC(tungsten carbide),
PCD(Polycrystalline diamond)
ND(Natural Diamond)
Different material wire drawing dies draw different materials wire, such as: copper, steel, Al., carbon, etc., according to your requirement.Different drawing angles for different materials.
Tungsten Carbide:
Lowest cost, good shock resistance, ease of production, large sizes available.Lower life expectancy.
Polycrystalline Diamond:
Excellence in life expectancy, wear resistance of diamond,high availability, cost effectiveness,Higher drawing force, smaller fines requires more filtration, maybe damaged by temperatures above 700ºC, wire surface condition less than from natural diamond.
Natural Diamond:
Wear resistance, excellent wire surface, high thermal conductivity, longer life expectancy,Sustainable to fractures from shock or wear, limited availability in required high quality and quantity, constantly escalating price.
| Case Size(mm) | Nib Size(mm) | Hole Size | Tolerance | ||
| OD(mm) | H(mm) | D(mm) | h(mm) | d(mm) | mm |
| 25x12 | 9x6 | 0.15~0.5 | 0~-0.02 | ||
| 30x16 | 13x10 | 0.5~2.6 | 0~-0.02 | ||
| 32x23 | 16x13 | 0.8~3.5 | 0~-0.02 | ||
| 32x23 | 16x14 | 1.0~3.5 | 0~-0.02 | ||
| 40x25 | 20x17 | 1.5~6.5 | 0~-0.02 | ||
| 40x26 | 22x18 | 1.8~6.5 | 0~-0.02 | ||
| 50x28 | 25x20 | 3.0~9.5 | 0~-0.02 | ||
| 70x35 | 30x22 | 5.5~12.5 | 0~-0.02 | ||
| 75x35 | 35x25 | 8.5~16.5 | 0~-0.02 | ||
| 80x35 | 40x25 | 16.5~21.5 | 0~-0.02 | ||
| 110x45 | 50x28 | 21.5~24.5 | 0~-0.02 | ||
| 120x50 | 60x35 | 24.5~34.5 | 0~-0.02 | ||
| 130x60 | 70x35 | 34.5~43.5 | 0~-0.02 | ||
| 140x60 | 80x35 | 34.5~45.5 | 0~-0.02 | ||
| 150x60 | 90x35 | 45.5~51 | 0~-0.02 | ||
| 160x75 | 100x40 | 51~56 | 0~-0.02 | ||
| 170x75 | 110x40 | 57~65 | 0~-0.02 | ||
| 180x80 | 120x45 | 66~69 | 0~-0.02 | ||
| 190x85 | 130x50 | 70~76 | 0~-0.02 | ||
