HFY1500 Core Drilling Rig
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HFY1500 Core Drilling Rig

  • Drilling Depth: 1500m
  • Drilling Diameter: BQ,NQ,HQ,PQ
  • Power: 37kw

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Features:

1.suitable for small diameter diamond core drilling, drilling large-diameter carbide project.
2.The drilling rig can be detachable, easy to move, suitable for use in mountainous area.
3.The clutch and gearbox of the drilling rig adopt EQ140 dongfeng auto parts. Therefore, it is very convenient to maintain and repair the drilling machine.
4.Equipped with sufficient instruments to display the situation in the hole. reasonable control handles, it is flexible and reliable for operating.
 
How does rotary drilling work?

Rotary drilling uses a rotating movement of a drill bit in order to generate wear in the ground (in order to drill into soft groud or mixed grouds):
- A rotary head, rotating thanks to hydraulic motors, is placed on a rig,
- a feed force is applied to the string,
- The rotary head makes the drill string to rotate,
- At the bottom of the drill string there is a bit, in contact with the ground, the bit creates the hole (the rotation of the bit generates wear).
- A fluid (water or drilling mud) is injected through the drill string till the bit. This fluid will flush the cutted material and bring them to the surface.
- As the bit drills down, the rotary head goes down the rig. Then added rods are inserted in order to go till the desired depth.
 
For drilling in hard rocks, rotary drilling is usually not the most adapted technic, for this it's better to use a drifter (also called hard rock drill).

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