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Grade | Cobalt Contant | Hardness(HRA) ±0.5 | Grain Size(um) | Application Fields |
RK06 | 6 | 90.4 | 2.0 | Buttons for high-pressure DTH bits are suitable for various carbide cylindrical buttons. With good impact resistance performance, abrasion resistance performance and universality, the buttons can be widely applied on rock layers. |
RK07C | 7 | 89.8 | 2.0 | As for the buttons for high pressure DTH bits with suppliemental bramd, their impact resistance performance is better than that of RK06 and they are suitable for drilling hard rocks. |
RK08C | 8 | 88.5 | 2.4 | As for the buttons for high-pressure DTH bits with supplement brand, their impact resistance performance is better than that of RK07C and they are suitable for drilling hard rocks. |
RK06D | 6 | 90.0 | 2.0 |
The buttons for medium and low pressure DTH bits aree suitable for medium and hard rock layers.
|
RK08D | 8 | 89.2 | 2.0 | The buttons for medium and low pressure DTH bits aree suitable for medium and hard rock layers. |
RK10C | 10 | 88.0 | 2.4 | Suitable for cone drill used in mining area and oil field, middle hard or hard layers. |
RK13C | 13 | 87.5 | 2.4 | Suitable for cone drill used in mining area and oil field, middle hard or hard layers. |
RK15C | 15 | 86.2 | 2.4 | Suitable for cone drill used in mining area and oil field, solidity or hard layers. |
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