Active Member
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[China]
Address: 1012-1 Mall, Huaren street, Tianyuan District, Zhuzhou City, Hunan province, China Zip code: 412000
Contact name:Emily
Zhuzhou Grewin Tungsten Carbide Tools Co., Ltd |
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What is the advantage of our drills?
1. Material: 100% virgin raw material with submicron grain size;
2. Grade: Various grades for choice;
3. Advanced production equipments and testing equipments
4. Precision Ground and polished;
5. High wear resistance,high hardness and impact toughness;
6. Advanced technology , automatic pressing , HIP sintering and
precision grinding;
7. Samples & small orders are acceptable
Super Raw Material
| HRC45 | HRC55 | HRC60 | HRC65 |
| Grain Size:0.6um Co:10 % Flexural strength:3350N/mm2 | Grain Size:0.6um Co:10 % Flexural strength:4000N/mm2 | Grain Size:0.5um Co:12 % Flexural strength:4300N/mm2 | Grain Size:0.4um Co:12.5 % Flexural strength:4300N/mm2 |
Coating
Coating | Color | Coating Temperature | Thickness (um) | HV | Application Temperature | Friction coefficient |
TiAlN | Purple-Gray | <600°C | 3-5 | 3300 | 800 °C | 0.3 |
| AlTiN | Black | <600 °C | 3-5 | 3500 | 900 °C | 0.3 |
| TiSiN | Copper | <600 °C | 3-5 | 3500 | 1500 °C | 0.4 |
| NaNo | Blue | <600 °C | 3-5 | 3800 | 1200 °C | 0.4 |
| CrN | Silver Gray | <480 °C | 2-2.5 | 2500 | 700 °C | 0.3 |
