What kind of drill should be used in quartzite formations?

What kind of drill should be used in quartzite formations?

The first choice of cost-effective drill bit or HFD, the drill bit for the down hole drilling machine is considered a consumable product, the hardness of the quartz sand is relatively large, all the side teeth of the down hole drilling bit must choose a large diameter and a large number of, such as the use of 16MM diameter will be more wear-resistant; the core tooth selection of the ball gear, a large number of, crushing the rock efficiency is higher;

In addition, the wear of the drill bit is not only because of the quality of the drill bit, but also related to the torque of the drill bit, drilling speed, impact force, and slag discharge of the fiber rod.

In different rock conditions to use different torque, can not always work under the high torque of the down hole drilling rig;

In addition, the drill bit drilling speed is too fast will also lead to bit wear, then you need to appropriately increase the propelling force of the propelling beam, and vice versa, reduce the propelling force;

To reasonably select the air compressor with moderate exhaust volume according to the hole diameter and hole depth, to ensure that the air output of the air compressor can blow the broken rock debris out of the hole in a timely manner, if the air output of the air compressor is small, you can lift the drill appropriately after a period of time, and continue to drill after discharging the waste residue in the hole. Different operators have different wear and tear on the drill bit, skilled operators, most of them will observe the drilling situation from time to time, and adjust the drilling torque, drilling speed, etc. according to experience, to increase the service life of the drill bit.