1.High quality 2.high- elastic 3.rigid 4.automatically adjustable 5.stable
PDC core coal mining drill bit introduction
PDC drill bit is super hard material combined with diamond and hard alloy under high temperature. It not only has the advantages of hard and durable from diamond, but also has the advantages of high impact resistance and big blade from hard alloy. It greatly improves the drilling efficiency and is the ideal drill bit for the drill operation of medium & hard as well as super hard rock. The carrier of PDC bits is forged and pressed by first-class steel. Its mechanical capacity is strengthened by fully automatic vacuum heat treatment equipment. The ordinary type adopts Chinese PDC as its blade, while the super-strong type adopts American blade made by GE. Choosing proper type makes high ratio of performance and price. Our PDC drill bits are widely used in all industries, such as coal mining, oil exploration, geological exploration, water and hydroelectric, railway and road, tunneling construction and so on. Two-wing PDC anchor bits (semi-round standard type) is applied to the hardness not bigger than f8. The working life is 10-30 times of the ordinary alloy bits, and the efficiency could be improved by 60%. Besides, the PDC bits don't requires figuring, which lows the labour intensity and helps to saves cost.
PDC core coal mining drill bit specification
| Drilling parameter | |||
| Dia. mm | Drilling pressure (Kg) | Rotate speed (rpm) | Pump volume (min) |
| 28 | 300—700 | 300—350 | 150—200 |
| 30 | 300—700 | 300—350 | 150—200 |
| 32 | 300—700 | 300—350 | 150—200 |
| 48 | 300—700 | 300—350 | 120—160 |
| 56 | 320—800 | 250—350 | 130—180 |
| 75 | 480—1200 | 200—300 | 150—200 |
| 94 | 640—1600 | 150—250 | 200—250 |
| 110 | 880—2200 | 120—200 | 200—300 |
| 152 | 1500—3000 | 100—200 | 500—850 |
| 190 | 1800—4000 | 100—200 | 600—1200 |
| 230 | 2200—4500 | 100—200 | 750—1400 |
| 270 | 2400-5000 | 100—200 | 1000-1500 |
PDC core coal mining drill bit photo
PDC core coal mining drill bit certificates
PDC core coal mining drill bit
