Hammer

The pneumatic percussion type of drilling is carried out using a rotary impact method, when a pneumatic hammer is used in the process - a submersible drill hammer. Today, models are available with valveless and valved air distribution; they operate on the energy of compressed air, at a pressure of 0.5 to 1.5 MPa. Most models are used for wells with a diameter of 80-165 mm. This method can be used for core or solid drilling. With solid drilling, the piston-driver of a down-the-hole drill hammer hits the shank of the bit with a translational-return motion. When cored, it transfers impacts to the core projectile. When drilling is carried out, the hammer should rotate at a speed of 30 to 70 rpm. The movement occurs using a rotator mounted on the machine; simultaneously with it, the drill string and bit move in a circular motion. The drilling speed using a down-the-hole drill hammer depends on the energy of a single impact, the design features for rock destruction and the rotation speed. For work, 3- or 4-blade chisels with carbide plates are usually used. In some cases, roller bits. Advantages of using an air hammer. The operating principle of an air hammer is similar to the operation of a jackhammer. The first models of this instrument were supplemented with many similar or similar elements. Modern models are more advanced. Today, the best mechanism for a down-the-hole hammer is considered to be a flat valve air distribution. In this case, the design operates uninterruptedly using an air-water mixture. As a drilling tool, the air hammer has a number of advantages. It is much simpler than a submersible hammer drill, but is more reliable and has fewer parts that wear out quickly. Any model of a modern air hammer operates on a water-air mixture, and therefore the design itself is quite simple. Drilling with this method is suitable for fractured, destroyed, abrasive rocks of medium and high density. No jamming of drill bits during operation. High degree of face cleaning from sludge. High level of productivity. Convenience and speed of tool replacement during operation. Pneumatic hammer drilling with casing is often used in cases where auger drilling is associated with the risk of emergency situations or simply does not bring the desired results. If you are in doubt about which model is needed for the job, our consultants will help you choose the right hammer drill. To do this, simply contact them in any way indicated on the site. You can clarify any questions you have by calling 8 (800) 775-28-06 with the managers of the Construction Equipment company.