Hybrid dry and wet diamond core drilling from AGP
Published 4/3 at 10:41Wet drilling of reinforced concrete is a very familiar process and has well established advantages in terms of cost effectiveness. Likewise, dry drilling of soft materials, such as brick, has proven to be very convenient. The above two processes require different types of machines for optimal results. A relatively newer application is dry drilling of reinforced concrete. This process requires special bits which are relatively more expensive than wet bits but have special advantages in many situations.
Now the new concept of the hybrid dry and wet diamond core drilling motor has been introduced. These combine the dry drilling of reinforced concrete using soft percussion with wet drilling for large diameters. The operator has the choice of drilling either dry or wet, depending on conditions. General drilling will call for wet drilling, since it is more economical, and when there are special requirements, dry drilling can be used.
The situations which call for dry drilling of reinforced concrete would be in situations where water is not allowed to be used due to possible water damage to surrounding areas, as well as overhead (inverted) drilling. Likewise, when operating in below freezing conditions, or when less setup time is required, since the water feed and collection are not needed.
The new AGP DD10 rig mounted hybrid drilling motor is said to perform wet drilling just like before, but it has the addition of soft percussion and convertible port for vacuum connection. This has been done to increase versatility and cost effectiveness as the cost of the dry drilling of consumables becomes more competitive.
