ME & WE
ZHANGYUXIN ZHANGYUXIN
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1. Description:
There are six different types of core bits that can be manufactured, depending on the application area and the cutting media used on the core bits:
Since PDC drill bits last many times longer than the equivalent bits with tungsten carbide insert, the operators can remain in the safe environment away form the unsupported roof.
The cutting edge keeps sharp within the life cycle of the bit.
2.Specification:
PDC Drill Bit type & rock formation
| Type | Rock formation | |
 | Standard PDC Drill Bit- half cutter | F＜8 |
| Standard PDC Drill Bit | F=6~10 |
| PDC Drill Bit- half cutter | F=10~12 |
| PDC Drill Bit | F=10~12 |
3.Application:
Mining & Coal Mining
Engineering construction
| Soft rock (coal, clay, mudstone) | Medium hard rock (sandstone, limestone, marble) | Hard rock (tunnel, quartzite, granite) | Remarks | ||
| PDC Drill Bit | | ✔ | ✔ | ||
| ✔ | ✔ | ✔ | ||
| ✔ | ✔ | ✔ | ||
| ✔ | ✔ | |||
| Coal Mining Drill Bits | | ✔ | Soft rock is suitable for use | ||
| ✔ | ✔ | ✔ | Fast drilling | |
| ✔ | ✔ | Long use time | ||
| PDC Core Bit | | ✔ | ✔ | Fast drilling | |
| ✔ | ✔ | Long use time | ||
4.Feature
Compared with tungsten carbide, PDC roof drill bit has the following advantages:
The consuming cost of PDC roof drill bit is low, while it is highly efficient. When the rock hardness f=6~8, the average ROP of the PDC roof drill bit is 4+ times that of the cemented carbide rock bolt bit.
When using PDC roof drill bit, the efficiency of drilling could be largely improved, and in ther meanwhile the longevity has been lengthened several times. When the rock hardness f=6~8, the average unit price per meter of tungsten carbide roof drill bit is 7+ times that of PDC.