Shirttail Enhancemented Rotary Rock Bit For Soft To Very Hard
Formations
Click here for catalogueTCI DRILL BIT.pdf
Features Of Rotary Rock Bit:
These bits are used to drill hard and abrasive formations. A more
wear-resistant grade of tungsten carbide insert is used to prevent
wear. Low cone offset with increased numbers of breakage resistant
cutters add to the required bit durability.
- Compression Strength: 60,000 – 100,000 psi
- Drilling Speeds: 50 – 90 rpm
- Jet Circulation: All sizes
- Weight on Bit (WOB): 4,000 – 7,500 lbs/in of bit diamete
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 | | | | | | | | | √ | √ | √ |
What is Rotary Rock Bit?
Rotary 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. Three types of cemented carbide
inserts are used for roller type bits being Chisel, Conical, and
Hemispherical. 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.
A roller bit will utilize nozzles from which the compressed air
escapes to lift the cuttings from the bottom of the hole.
Quality Control
In manufacturing, each process goes through an extensive and
painstaking testing ,
quality control is a process that ensures customers receive
products free from defects and meet their needs.
1, Raw material selection:To make a good drill bit, it is necessary
to select the best material and gatekeeping the quality of the
material. We purchase the high-quality steel and strictly control
the material composition and size, it main includes the detection
of the shape, diameter, reamed diameter, length composition, and
flaw of the raw material, Tungsten Carbide and Grease are also the
best raw materials on the market.Besides, we marked every different
piece of materials before transferred to the warehouse.
2, In strict accordance with the ISO9001 international standards
for production.
Carefully control every step of the production, complete each of
the production process,
the production process is including blanking, forging, rough
turning, heat treatment,fine turning, quenching, assembling,
welding, painting, then storage.
Each working process was full inspected, after the qualification,
then move to next working process, which to ensure the 100%
qualified rate.
3, Sampling observation, numbered, packing and arrange the
shipment.
Don’t see the bit you are looking for? Give us a call, we can
customize any bit to fit your unique circumstances.