Lower Pressure Parabolic Shape Carbide Button Bits High Wear Resistance
Description of carbide parabolic shape button
| Grade | Density (g/cm3) | Hardness (HRA) | T.R.S (MPa) | Performance&application recommended |
| MK4 | 15.1 | 90.0 | 1800 | Mainly used as small buttons for percussion bits to cut soft and medium hard formations |
| MK6 | 14.9 | 90.5 | 2600 | For coring crowns,electric coal drill bits,coal cutting picks,oil cone bits and scraping knife bits,used in geological prospecting,coal mining and oil well boring |
| MK8 | 14.7 | 89.8 | 2800 | Suitable for coring crowns,electric coal drill bits,coal cutting picks,cone drill bits and scraping knife bits,used in geological prospecting,coal mining and oil well boring |
| MK10 | 14.7 | 89.0 | 2700 | Mostly used as the buttons of small and mediumsized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations |
| MK15 | 14.6 | 88.0 | 2750 | Suitable to strips,conical buttons for rotary percussion-resistant,geological prospecting buttons,cut soft and medium hard formations |
Type of carbide parabolic shape button
| Dismension |
| Diameter | Height | Crest Height |
| 9.2 | 13 | 5.0 |
| 10.2 | 15 | 5.0 |
| 11.2 | 16 | 5.8 |
| 12.3 | 17 | 6.7 |
| 13.3 | 18 | 6.8 |
| 14.3 | 20 | 7.3 |
| 16.3 | 24 | 8.4 |
| 18.3 | 27 | 10.5 |
Application of carbide parabolic shape button
Parabollic/Semi-Ballistic Button are usually used as gauge buttons and front buttons of DTH Bits,
suitable for medium abrasive and hard formations.
