Hunan Tianying Drilling Machine Manufacturing Co., Ltd.
Hunan Tianying Drilling Machine Manufacturing Co., Ltd. Tricone Drill Bit
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IADC435 Tricone Drill Bit For Drilling Very Soft Formation And Coal Mine
Click here for catalogueTCI DRILL BIT.pdf
What Is Tricone Drill Bit consists of ?
A roller cone or tricone rock 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 bits the above 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 properly
| 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 |
INTERRELATIONSHIP BETWEEN INSERTS REQUIREMENTS AND THE FORMATION
| Formation Characteristics | Insert Spacing | Insert Properties | Penetration and Cuttings Production | Cleaning Flow Rate Requirement |
| Soft | Wide | Long and sharp | High | High |
| Medium | Relatively wide | Shorter and stubbier | Relatively high | Relatively high |
| Hard | Close | Short and rounded | Relatively low | Relatively lower |
Advantage:
advantage of tci drill bit.pdf
The new and high efficient mining rock roller bit manufactured by Tianying is applicable to soft, hard and very hard formation. It has the characteristic of long lift, high efficiency and slag discharge easily. AND ITS DRILL DEPTH IS 2 OR 3 TIMES THAN THE COMMON ROLLER DRILL BITS.
Tianying's Best Service
1. 365×24 Year-round Service,We are committed to year-round 24-hour service even during holidays.
1. Provide professional technical services, including products introduction, selecting and problem solution etc.
3. Within 35 Working Days Quick Delivery.
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.