Hunan Boyun-Dongfang Powder Metallurgy Co., Ltd
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Tungsten Carbide Ground Rods with 3 Helix Coolant Holes 30° Length 330mm for Drilling tools
Our rods have different grade and right to use on different application; Specially we are produce the Nano Grain carbide (Grain＜0.2µm); Our rods are with high hardness and wear/corrosion resistance, all products with stable quality;
l Dimension: diameter from 6-20mm, length 330mm;
l with 30° helix holes rods;
Grade Information
| Grade | Co% | Grain Size of WC | Hardness |
Hardness |
Density | Flexural Strength | Fracture Toughness |
Elastic Mod- ulus | Coefficient of Thermal Expansion |
| HRA | HV30 | g/cm³ | MPa | GPa | MNm-3/2 | 0-6/℃ | |||
| ST15D | 9 | Sub-Micron | 91.2 | 1520 | 14.4 | 3500 | 13 | 500 | 5.3 |
| Diameter | Length | Hole Spacing | Hole | size | ||||||
| D(mm) | Toleance | L(mm) | Toleance | TK(mm) | Toleance | d(mm) | Toleance | “Thread (±0.5°)” |
a孔中心 偏离 |
|
| 6.0 | h5 | 330 | +0/+5 | 2.90 | +0/0.30 | 0.50 | ±0.10 | 32.65 -0.65/+0.67 | ±4° | |
| 10.0 | h5 | 330 | +0/+5 | 5.10 | +0/0.30 | 0.85 | ±0.15 | 54.41 -1.08/+1.11 | ±4° | |
| 14.0 | h5 | 330 | +0/+5 | 7.30 | +0/0.50 | 1.40 | ±0.15 | 76.18 -1.51/+1.56 | ±4° | |
| 18.0 | h5 | 330 | +0/+5 | 9.50 | +0/0.50 | 1.70 | ±0.20 | 97.95 -1.94/+2.00 | ±4° | |