Hunan Tianying Drilling Machine Manufacturing Co., Ltd.
| Payment Terms | L/C, T/T |
| Supply Ability | 1000 pcs per Month |
| Delivery Time | 10-15 working days |
| Packaging Details | Wooden case , signle item per case |
| Machine Type | Mining rotary drill bits |
| Material | Antiwear Cemented Carbide and Tomlin grease |
| Size | 7 7/8 inch or 200mm |
| Thread Type | API 4 1/2" REG ，API 6 5/8" REG |
| Processing Type | Forging |
| Bearing type | Sealed Bearing |
| Brand Name | Tianying |
| Model Number | IADC 745 |
| Certification | ISO 9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 1000 pcs per Month |
| Delivery Time | 10-15 working days | Packaging Details | Wooden case , signle item per case |
| Machine Type | Mining rotary drill bits | Material | Antiwear Cemented Carbide and Tomlin grease |
| Size | 7 7/8 inch or 200mm | Thread Type | API 4 1/2" REG ，API 6 5/8" REG |
| Processing Type | Forging | Bearing type | Sealed Bearing |
| Brand Name | Tianying | Model Number | IADC 745 |
| Certification | ISO 9001 | Place of Origin | CHINA |
| High Light | tci drag drill ，tricone drilling bits | ||
All Kinds Of Sizes Tricone Rock Bit Drilling Through Soft To Ultrahard Formations
Click here for catalogueTCI DRILL BIT.pdf
Hard to Very-Hard Formation
Application : For use in moderately abrasive consolidated formations with compressive strength ranging between 140 – 485 Mpa such as hard limestone, quartzite, granodiorite, and medium grade metamorphic 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.
IADC 8 SERIES DRILL BITS
The hard formation TCI tricone bits can be used to drill hard and abrasive formations. Wear resistance tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge. Maximum numbers of hemispherical shaped inserts are used in all rows to provide cutter durability and long life.
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:
High quality----strictly act according to the ISO9001 standard, and all bits are manufactured according to strict standards, set forth by the American Petroleum Institute (API).
Propessional Equipment---- No matter raw material selection, or processing technology are selected is the industry leading technical equipment.
16 Years History---- From 2003 to 2019, customers are located all over the world and win a good reputation.
Don’t see the bit you are looking for? Give us a call, we can customize any bit to fit your unique circumstances.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1958
Total Annual:
8000000-10000000
Employee Number:
100~200
Ecer Certification：
Site Member
Professional. Duarable, Efficient, TIANYING TCI Tricone Bit! Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one state-appointed factory of mining tools especially for tricone bit. we are established in 1958 and located at Zhuzhou city of Hunan provice. one fam... Professional. Duarable, Efficient, TIANYING TCI Tricone Bit! Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one state-appointed factory of mining tools especially for tricone bit. we are established in 1958 and located at Zhuzhou city of Hunan provice. one fam...
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