Drill College

What is down the hole drilling? Understanding the Process and Applications

August 8, 2025
Ame Drill

Down the hole drilling (DTH) essentially involves a DTH drilling hammer at the bottom of a drill string. It relies on three elements for drilling holes: bit loading (weight), rotation, and air. These active elements combine to be efficient at crushing rock. As the drill string slowly rotates, the drilling hammer is forced into the rock repeatedly. Striking power is provided by compressed air driving a piston inside the hammer.

The Benefits of RC Drilling Tools: Discover Why They’re Essential for Modern Exploration

August 8, 2025
Ame Drill

RC drilling has clear advantages over other top hammer drilling methods.Achieves greater penetration in hard rock than air core drilling, thanks to the percussive force and the strength of the RC drill bit.

How Reverse Drilling is Applied: Techniques and Applications

August 8, 2025
Ame Drill

Reverse drilling is applied and consists of Reverse Circulation (RC) bit and Reverse Circulation (RC) hammer, commonly employed in open-cut mines and used for pit grade control and in delivering useful insight for mine planning and blasting. It has an optimal depth of between 300 and 500 meters.

How Reverse Circulation Drilling Works: A Comprehensive Guide

August 8, 2025
Ame Drill

Reverse circulation drilling, or RC drilling, is a form of percussion drilling that uses compressed air to flush material cuttings out of the drill hole safely and efficiently.

How to Select the Best DTH Drilling Bits: A Comprehensive Guide

August 8, 2025
Ame Drill

The best DTH drilling bits are manufactured to match the shank and diameter of the DTH hammers. The bodies of quality bits are precision machined from alloy steel, heat treated to a specified hardness, providing surface compression for fatigue resistance, and then fitted with precision carbide buttons.

How to match the hammer to the correct pipe diameter

August 8, 2025
Ame Drill

Pipe diameter should be close to the hammer diameter to provide optimum flushing, reducing the chances of getting stuck in the hole.

How to choose the correct top hammer drilling tools

August 8, 2025
Ame Drill

Suitable for down-the-hole (DTH) drilling tools. The pneumatic percussion technique requires consideration of more than one type of tool to drill efficiently and profitably. A variety of factors, from hammer size to determining whether or not an economy hammer represents the best value, all figure into the hammer’s overall cost of operation on a given job.

How to Choose Correct Anchor Bits?

April 15, 2025
Ame Drill

This article explains how to choose the right anchor bit type based on rock conditions to ensure efficient drilling and reduce deviation in various formations.

How to Choose correct Bit Head Design for DTH drill bits?

March 6, 2025
Ame Drill

Learn how to choose the right DTH drill bit head design—flat, concave, or convex—based on rock conditions to improve drilling efficiency and reduce costs.

Do you want to save drilling costs? Then resharpen button bits in time!

February 27, 2025
Ame Drill

Button bits have the advantages of high drilling speeds, stable and long service life, and are widely used in mining, quarrying, water wells, construction and other fields.