Cemented carbide is a kind of composite material which is made of refractory metal hard compounds (WC, TiC, etc.) and bonding metals (CO, Ni, Fe, etc.) by powder metallurgy. Cemented carbide have high hardness, high wear resistance, high strength, high modulus of elasticity, low coefficient of thermal expansion, high red hardness and stable chemical properties.
Standard Specifications:
| Dimensions(mm) | Density (g/cm3) | Hardness (HRA) | TRS(Mpa) | |
| Diameter | Height | |||
| 20 | 25 | 14.50 | 87.50 | 2400 |
| 22 | 35 | 14.50 | 86.00 | 2480 |
| 24.8 | 33 | 14.50 | 86.50 | 2600 |
| 25 | 35 | |||
| 26.5 | 38 | |||
The Coal Mining Tungsten Carbide Buttons can be customized according to your drawing to match your drilling tools, too.
It has complex application environment, engaged in underground coal mining with unclear geological components, and high-power equipment such as propulsion force and shear force, which requires the tungsten carbide buttons to have good impact resistance, heat resistance and wear resistance.
Spherical buttons for tri-cone drill bits
| Type | Dimension | ||||
| D | H | SR | a° | e | |
| ZQ11.5*12.5KP | 11.25 | 12.5 | 6.0 | 18 | 2.0 |
| ZQ13*13.5KP | 13.25 | 13.5 | 6.7 | 18 | 2.5 |
| ZQ14*14.5KP | 14.5 | 14.5 | 7.2 | 18 | 2.5 |
Spherical buttons for high pressure DTH drilling
| Spherical buttons for high pressure DTH drilling | ||||||
| Type | Dimension | |||||
| D | H | SR | a° | P° | ||
| ZQ14*20K(P) | 14.2 | 20 | 7.2 | 18 | 27 | |
| ZQ16*22K(P) | 16.25 | 22 | 9 | 18 | 27 | |
| ZQ18*25K | 18.35 | 25 | 9.2 | 18 | 30 | |
Spherical buttons for shield machine hob
| Spherical buttons for shield machine hob | |||||
| Type | Dimension | ||||
| D | H | SR | a° | P° | |
| ZQ16*23KP | 16.25 | 23 | 9 | 18 | 1.8 |
| ZQ16*21KP | 16.25 | 21 | 9 | 18 | 1.8 |
Applications:
Polyconical, Parabolic and Mushroom Tungsten carbide buttons, are the general buttons shapes for coal mining series.
Suitable for welding coal mining, coal mining machine in mid-soft rock formation, tunnel excavation in hard rock formation, drilling on extra hard rock formation or tunnel excavation in complicated rock formation.
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