Active Member
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[China]
Address: 8#,jianshan road,Tianying drill industrial park, zhuzhou. hunan provice, China
Contact name:
Hunan Tianying Drilling Machine Manufacturing Co., Ltd. |
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Special Sizes Can Be Customized Roller Cone Bits For Various
Formation
Click here for catalogueTCI DRILL BIT.pdf
The Features
A roller cone 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
All of our bits are manufactured according to strict standards, set
forth by the American Petroleum Institute (API).
And classified according to characteristics set forth by the
International Association of Drilling Contractors (IADC).
How to read an IADC Code properlyABOUT IADC.pdf
| First Digit | TOOTH |
| 1 | Steel tooth bits for Soft Formation |
| 2 | Steel tooth bits for Medium Formation |
| 3 | Steel tooth bits for Hard Formation |
| 4 | TUNGSTEN CARBIDE INSERT BITS For varying formation hardness with 4 being the softest and 8 the hardest. |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| Second Digit | FORMATION |
| 1 | 1,2,3 and 4 are further breakdown of formation with 1 being the softest and 4 the hardest. |
| 2 | |
| 3 | |
| 4 | |
| Third Digit | BEARING/SEAL TYPE |
| 1 | Standard open bearing roller bit |
| 2 | Standard open bearing roller bit, air-cooled |
| 3 | Standard open bearing roller bit with gauge protection |
| 4 | Sealed roller bearing bit |
| 5 | Sealed roller bearing bit with gauge protection |
| 6 | Journal sealed bearing bit |
| 7 | Journal sealed bearing bit with gauge protection |
| Fourth Digit | ADDITIONAL FEATURES |
| A | Air application |
| R | Reinforced welds |
| C | Center jet |
| S | Standard steel tooth |
| D | Deviation control |
| X | Chisel insert |
| E | Extended jet |
| Y | Conical Insert |
| G | Extra gage protection |
| Z | Other insert shape |
| J | Jet Deflection |
Application
For use in moderately abrasive consolidated formations with compressive strength ranging between 140 – 485 Mpa such as hard limestone, quartzite, granodiorite, and medium grade metamorphic formations
Advantage:
1. Strictly select the material to ensure the reliable quality. Bad
steel and tungsten carbide inserts won't be used.
2. Strictly act according to the ISO9001 standard, and control by
full-scale inspection.
3. Sales and support people are highly trained in the latest rock
drilling technology and can offer you expert advice on what
products will best fit a specific end use application.
More advantage as here:advantage of tci drill bit.pdf
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
Don’t see the bit you are looking for? Give us a call, we can
customize any bit to fit your unique circumstances.
The above represents commonly available sizes and types, we do
produce other sizes and types of rock drill bits which do not
appear on . Please contact us for more information.
