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Do you know this knowledge about rock drill rods?
The drill rod is the latest tool for human beings to conquer rocks and minerals. It is composed of a slender rod system. Under the conditions of severe wear of rocks and minerals and erosion and corrosion of high-pressure water flow (or compressed air) and mine water, it is subjected to tension,
Jan 6th,2025
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Do you know this knowledge about rock drill rods?
The drill rod is the latest tool for human beings to conquer rocks and minerals. It is composed of a slender rod system. Under the conditions of severe wear of rocks and minerals and erosion and corrosion of high-pressure water flow (or compressed air) and mine water, it is subjected to tension, compression, bending, twisting and high-frequency impact of about 2000-9000 times per minute by the rock drill. Each impact energy is as high as 25-500J. It often fails in the form of stress corrosion fatigue fracture, and its service life is only tens of minutes. Therefore, rock drill tools are the most demanding mechanical tools of all human beings, with the shortest service life, high technical content, and a large number of consumable tools necessary for basic industries. Mining workers in more than 100 countries and regions around the world work 8 hours a day, and more than half of their time is spent drilling holes in rocks and minerals. The annual consumption of rock drill tools required is about 50 times that of the domestic market in my country. my country produces about 7000t of cemented carbide for drill rods annually, ranking first in the world, and its quality is close to the international advanced level.
At present, the drill rod specifications commonly used at home and abroad are: H19, H22, H25, H28, H32, H35, H38, H45mm hexagonal, and D32, D38, D45, D51mm round hollow steel drill rods. The drill rod length is generally 0.4 to 6.4m.
