Hunan Tianying Drilling Machine Manufacturing Co., Ltd. |
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Cemented Carbide Insert And Sealed Bearing Tricone Drill Bit For
Mining Industry
Click here for catalogueTCI DRILL BIT.pdf
What is Roller Cone Bit?
Roller Cone Bit - a drilling method that uses a roller bits. In roller-bit
drilling, rock is cut by hard-alloy teeth projecting from rolling
cutters, which rotate on the drill-bit bearings. Inturn, the drill
bit rotates at a high rate, and presses against the bottom hole
with a high axial force. The teeth of the rolling cutters roll over
the bottom hole and, owing to the large stresses that develop in
the area of contact between the teeth and the rock, cut the rock by
crushing and chipping. As the hardness of therock increases, the
rotation rate decreases and the axial force increases. Destroyed at
the mine the rock is removed to the surface by air compressor, mud
pump, or a combination of these methods.
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 | √ | √ | √ |
This Series Of Rock Roller Bits Can Apply For Drilling Hard To
Very-Hard Formation.
Application : For use in abrasive consolidated formations with compressive
strength above 400 Mpa such as taconite, quartzite and banded iron
formations
Cutting structure: These bits are characterized by closely spaced conical or
spherical inserts with medium to low projection. This configuration
promotes good penetration rates in hard, consolidated and very
abrasive formations. Smaller carbide inserts are provided on the
gage and inner rows or hard metal is deposited in the nose area to
contain shell erosion and improve performance.
Advantage:
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.