Zhuzhou Jiabang Refractory Metal Co., Ltd
Zhuzhou Jiabang Refractory Metal Co., Ltd
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Raw Material Tungsten Cemented Carbide Shield Cutter For Tunnel Boring Machines
Zhuzhou Jiabang Refractory Metal Co., Ltd is professional producer for tungsten carbide shield cutters.
We produce the shield cutter with 100% virgin material in HIP and make sure the structure is stable and even.
By using our special production process, the tungsten carbide shield cutter is the right choice for the tunnel boring machines (TBM).
It has high wear resistance, high hardness and long lifespan.
Grades and Properties:
| Grades | Density g/cm³ | T.R.S Mp α | Hardness HRA | Performance &application recommended | Approx grades in China | ISO Grade |
| MK4 | 15.1 | 1800 | 90.0 | Mainly used as small buttons for percussion bits to cut soft and medium hard formations. | YG4C | K01-K05 |
| MK6 | 14.9 | 2100 | 90.5 | 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. | YG6 | K10 |
| MR06H | 14.94 | 3000 | 90.5 | Good strength and wear resistance, for bits of rotary hammer rock drills and heavy rock drills, for hard and very hard rocks. | YK05,KK06H | K10 |
| MK8 | 14.7 | 2800 | 89.8 | 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. | YG8 | K20 |
| MK10 | 14.7 | 2700 | 89 | Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations. | YG8C ZD15 | K20 |
| MK15 | 14.6 | 2750 | 88 | Suitable for strips, conical buttons for rotary percussion drill bits, geological prospecting buttons, cut soft and medium hard formations. | YK15 YG9C | K20-K30 |
| MK20 | 14.5 | 2800 | 87.5 | Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations. | YK20 YG10C | K30 |
| MK30 | 14.4 | 2850 | 87.0 | Largely used for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard and very hard formations. | YG11C | K20-K30 |
| MK40 | 14.2 | 2900 | 86 | Mainly used for the buttons of tricone bits, and inserts of rotary percussion bits to cut hard and very hard formations. | YK40 YG13C | K40 |
| MK50 | 14.0 | 3000 | 85 | For oil cone drill bits, for medium soft and medium-hard rocks. | YG15C | K40 |
| MK60 | 14.0 | 3000 | 87 | Good strength and less wear resistance, for bits of rotary hammer rock drills and heavy rock drills, for hard and very hard rocks. | YG15 | K40 |
Applications:
For underground tunnels, there are some constructions like subway. And there are also tunnels through the mountains.
All these will need tunnel boring machines. And on these machines, there is a circle blade. And our tungsten carbide shield cutters are mounted on the blade.
