Shield TBM cutter for underground tunnelling
Description:
A tunnel boring machine (TBM) is a machine used to excavate tunnels with a circular cross section
through a variety of soil and rock strata. There have a very big circle blade in the front of tunnel
boring machineequipped with various kinds of cutters, in order to promote stable and longer lasting
life of application, we have research and developed special tungsten carbide materials suited to your
application.The TBM technology is mainly used in underground ming and traffic tunnelling like metro,
railway and road tunneling.
Grade and Applications:
| Grade | Density | T.R.S | Hardness | Performance & application recommended |
| g/cm3 | MPα | HRA |
| MK4 | 15.1 | 1800 | 90.0 | Mainly used as small buttons for percussion bits to cut soft and medium
hard formations. |
| MK6 | 14.9 | 2000 | 90.5 | For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits
and scraping knife bits, usd in geological prospecting, coal mining and
oil well boring. |
| MK8 | 14.7 | 2400 | 89.7 | 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 | 2450 | 88.5 | 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 | 2450 | 87.8 | Suitable to strips, conical buttons for rotary percussion-resistant, geological prospecting buttons, cut soft and medium hard formations. |
| MK20 | 14.4 | 2550 | 87.0 | Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations. |
| MK25 | 14.5 | 2600 | 87.5 | Primarily for the buttons and inserts of rotary percussion bits to cut medium hard
and very hard formations. |
| MK30 | 14.4 | 2600 | 87.0 | Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations. |
| MK40 | 14.2 | 2650 | 86.5 | Predominatly for the buttons of tricone bits and inserts of rotary percussion bits to cut hard and vey hard formations. |
| MK50 | 14.0 | 2700 | 86.0 | For oil cone drill bits, for medium soft and medium -hard rocks. |
| MK60 | 14.0 | 2500 | 87.0 | Good strength and less wear resistance, for bits of rotary hammer rock drills and heavy rock drills, for hard and very hard rocks. |
Other grades may be offered by customers' requirements
Competitive Advantage:
1. Expertise in tungsten carbide for 15 years, we can assit you in choosing the optimum grade for your job
2. 100% new material.
3. Be more durable.
4. OEM & ODM Service.
5. All payment terms supported.
6. Fast delivery time & Convenient Transportation.
Product Tags:
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Shield Cemented Carbide Tool / TBM Cutter For Underground Tunneling Images
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