Product Details
Advanced Cutting Structure designed Mining Drill Bits More Footage
Can Drilled
Click here for catalogueTCI DRILL BIT.pdf
What is Mining Drill Bits?
- A Mining Drill Bit consists of a bit body with three moveable conical rollers
equipped with cemented carbide inserts.
- The idea is the crush the rock by rolling the inserts against the
rock with appropriate rotation speed and feed force.
- Carbide inserts are distributed over the three rollers in such a
manner that the entire bottom of the hole is worked on when the
drill bit is rotated.
- Roller bits for hard and abrasive rock generally have spherical
cemented carbide inserts closely spaced.
- Roller bits for softer rock may have the chisel and conical carbide
teeth or quality milled steel teeth as the cutters.
- Three types of cemented carbide inserts are used for roller type
bits being Chisel, Conical, and Hemispherical.
- A roller bit will utilize nozzles from which the compressed air
escapes to lift the cuttings from the bottom of the hole.
Application
Tricone drill bit is one of the main tools for blast hole and well
drilling, mainly used for large-scale open-pit mining, such as
open-pit coal mines, iron mines, copper mines and molybdenum mines,
also the non-metallic mines. With the increasing in variety of
type, it’s also widely used in quarrying, foundation clearing,
hydrogeological drilling, coring, tunneling in railway
transportation department and shaft drilling in underground mines.
The rock breakage by the tricone bit which used in mine is working
with both the impact of teeth and the shear caused by slippage of
the teeth, which bring high rock breaking efficiency and the low
operation cost.
CUTTING SELECTION GUIDE
| MPa | 0 | 70 | 140 | 210 | 276 | 345 | 411 | 485 | 552 | 620 | 690 |
| Ksi | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
| IADC435 | | √ | √ | | | | | | | | |
| IADC535 | | | √ | √ | √ | √ | | | | | |
| IADC545 | | | √ | √ | √ | √ | | | | | |
| IADC635 | | | | | √ | √ | √ | √ | | | |
| IADC645 | | | | | √ | √ | √ | √ | | | |
| IADC725 | | | | | | | √ | √ | √ | √ | |
| IADC735 | | | | | | | √ | √ | √ | √ | |
| IADC745 | | | | | | | √ | √ | √ | √ | |
| IADC835 | | | | | | | | | √ | √ | √ |
Main Products We Provide
We mainly provide Tricone Bits(TCI Drill Bits) for open pit mining.
a). Type: Tungsten Carbide Insert (TCI)
b). Formation Application: Soft to Hard Formation
c). Size Available: 7 7/8''~26''
d). Popular IADC Code: IADC545,645,725,735,745,825,835
Company Profile
Professional. Duarable, Efficient, TIANYING TCI Tricone Bit!
Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one
state-appointed factory of mining tools especially for tricone bit.
we are established in 1958 and located at Zhuzhou city of Hunan
provice. one famous heavy industrial base of China. covering the
land area of more than 800 acres with total asset of RMB130 Million
and over 100 staffs.


we have advanced full-equipped tricone bits and rockdrilling
tillsmanufacturing workshops, high frequency welding workshop.heat
treatment workship. mould equipment making workshop and the various
departments of measurement. quality control. technology R&D
center. the tatal main equipments amount to over 300 sets andthe
annual production volume for tricone bits is 5000pcs for other rock
drilling tools is over 1400000 pieces.


we have partners all over the world like America.
Europe.Australia.South Africa. UAE. Brazil and so on.
To get Tianying TCI Drill Bit news direct, follow us on LinkedIn, Facebook and Twitter.