R.C. Drilling, also known as "Center Sample Recovery" or "Dual Wall Drilling," uses a dual wall pipe in which the drilling medium, typically high pressure air, is passed between the outer and inner tubes down to the face of the drilling bit and returned up the center tube along with the sample the drill bit cut.RC series Reverse Circulation DTH Hammer is the most competitive product of our company, it is mainly used for deep exploration drilling and stope ore grade control.
Reverse Circulation Dualwall drill rods are used in drilling and consist of an exterior drill rod and an inner tube. The inner tubes overlap and seal with "O" rings as the drill rod portions are fastened together. This offers a continuous route for the drill tailings to travel from the bit face to the surface.
Hard rock drilling may be done quickly and affordably using Reverse Circulation DTH Hammer drilling. A large-diameter RC drill bit was creatively constructed and numerically optimized with respect to the suction ability since the air RC drill bit is the driving force behind the Reverse Circulation DTH Hammer drilling system to create the reverse circulation. The findings indicate that a drill bit's ability to suction can be improved by raising the suction-nozzle elevation angle and deflection angle. When the air flow rate is at 1.205 kg/s, the drill bit performance achieves its peak condition, and as the air mass flow rate rises, it begins to degrade.
It has the following characteristics:
Based on prior knowledge of conventional hammers, along with Reverse Circulation DTH Hammer characteristics, improved internal structure, and optimal energy transfer, the series of hammers drilling with quick, smooth, and continuous sampling is guaranteed.
The RC hammer's interior structure is fairly straightforward and made up of robust components to provide a long lifespan and simple maintenance.
Without taking the hammer apart, the collecting tube may be changed thanks to its integrated construction. After being carbureted, it possesses high abrasion resistance.
Equipped with bits designed with patent, simply by replacing the drill bit, the same Reverse Circulation DTH Hammer can drill holes of different sizes ensuring that the sample is not contaminated. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.
