Wear Proof And Powerful Rotary Rock Bit For Cut Break Or Crush The
Rock
Click here for catalogueTCI DRILL BIT.pdf
Features Of Rotary Rock Bit:
The medium hard formation TCI tricone bits features robust chisel
tungsten carbide inserts on the heel row and conical on the inner
rows.
This design provides a fast drilling rate and added cutting
structure durability in medium to medium hard formations.
The HSN rubber O-ring provides adequate sealing for bearing
durability.
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 |
We took the following factors into consideration when designing:
1. Journal Angle - Journal angle determines the overall aggressiveness of the
bottom hole profile. Soft formation rock bits employ a 33 degree
angle while hard formation rock bits employ a 36 degree angle.
2. Cone Offset - Increased rate of penetration (ROP) can be achieved by
offsetting the ceter line of the cone away from the center of bit
rotation. This produces more on-bottom action. The higher the
offset the greater the scraping and gouging action on bottom.
3. Cone Angle –Oversize angle controls the diameter of the cone at gage.
Soft to medium formation tricones employ a more round cone profile
and a larger cone angle. This creates a bottom hole action of
gouging and scraping.
Hard formation bits employ a smaller cone angle and a flatter cone
profile. This creates a bottom hole action of crushing.
4. Oversize Angle - Oversize angle controls the diameter of the cone at gage.
Soft formation tricones employ a higher oversize angle; thus,
escalating gage action and cone diameter.
Hard formation bits have very little or no oversize angle. This
reduces the action on gage and also reaming of gage inserts.
5. Intermesh - Intermesh is the distance the top of a tooth or button bit
insert extends into the grooves of adjacent cones. This spacing
allows for cleaning of formation and prevents packing.
6. Projection and Pitch - Projection is the height of the button or tooth. Pitch is the
space between teeth or inserts.
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.
