Customized cemented carbide shield cutter for tunnel boring machine
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 machine equipped 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:
Other grades may be offered by customers' requirements
| Grade | Density | T.R.S | Hardness | Performance & application recommended |
| g/cm3 | MPα | HRA | ||
| MK4 | 15.1 | 1800 | 90 | 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 | ||||
| MK20 | 14.4 | 2550 | 87 | Primarily for the buttons and inserts of rotary percussion bits |
| medium-hard and hard formations. | ||||
| MK25 | 14.5 | 2600 | 87.5 | Primarily for the buttons and inserts of rotary percussion bits |
| medium hard and very hard formations. | ||||
| MK30 | 14.4 | 2600 | 87 | 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 | 2700 | 86 | For oil cone drill bits, for medium soft and medium -hard rocks. |
| MK60 | 14 | 2500 | 87 | Good strength and less wear resistance, for bits of rotary |
| rock drills and heavy rock drills, for hard and very hard rocks. |
Competitive Advantage:
1. Expertise in tungsten carbide for 15 years, we can assit you in choosing the optimum grade for your job.
2. We produce only with advanced tungsten carbide material to ensure high level of quality
3. You're guarranteed to find the right one for your application with various grade and types available
4. All our product are in-house made under strict quality controlled conditions.
1. All raw materials are tested in terms of density, hardness and T.R.S before use.
2. Every piece of product goes through in-process and final inspection.
3. Every batch of product can be traced.
4. 100% of our products pass final inspection before being put on the market.
