IADC635 Roller Cone Bit With Durable And Efficient Cutting Structures For Mining
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IADC 6 SERIES DRILL BITS
The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.
This design provides a fast drilling rate and added cutting structure durability in medium to medium hard for mations.
The HSN rubber O-ring provides adequate sealing for bearing durability.
Application
Tricone drill bit is the best all-purpose drill bit and can be used for many different types of rock formations, such as Soft Rock Formations (consist mainly of sand, clay, limestone or shale), Medium Rock Formations (calcites, dolomites, hard limestones, and some hard shale), Hard and Abrasive Formation (hard shale, calcites, mudstones, chert, pyrite, granite, quartzite, and cherty lime stones).
Common fault analysis of Tricone bits
| Common fault |
Fault description |
Method |
| Early wear of the shirttail |
Abrasive formations, bent drill rod, seriously worn stabilizer and insufficient air for drilling rate attained etc, are all the causes which result in premature shirttail wear. In this case, the configuration of cones is good and the amount of inserts wear is small. Shairttail wear can also allow the big roller bearings to fall out resulting in bit failure. |
The designer should strength the shirttail with certain measures to increase the wear-resistance capacity of shirttails. |
| Early wear and loose movement of the bearing |
Excessive weight on bit, insufficent air to clean the hole and/or cool the bearing, leads to bearings overheating due to improper cooling and poor cuttings removal can shorten the service life of bit bearing. |
Reduce bit pressure and increase air pressure |
| Cutting structure failure |
Excessive WOB or Rotation speed; Wrong bit selection; Cuttings blowing in bad conditions caused repeating crushing. |
Correctly select operating parameters and rotary types for specific working conditions |
Advantage:
- Rotary drill bits are manufactured using aircraft quality steel and premium carbide grades developed to suit the toughest application.
- Computerized designs using solid modeling, computerized manufacturing processes using the latest in CNC equipment and computer process controlled heat treatment ensure consistent, high quality, drill bits.
- A tailor made cutting structure provides our customer with the best combination of bit life and rate of penetration to yield the lowest cost per meter.
- The gauge will have Carbide Gauge Inserts to prevent early erosion of the steel. In very harsh or abrasive conditions additional protection is offered by applying Hard Facing alloy material to reinforce critical wear areas of the bit.
Don’t see the bit you are looking for? Give us a call, we can customize any bit to fit your unique circumstances.
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Durable Mining Roller Cone Bit Durable / Efficient Cutting Structures IADC635 Images
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