How to make a high-performance, durable DTH drill bit?
2022-06-06
DTH drill bit is a drill bit used to drill holes. Generally, it has side teeth and middle teeth. The middle teeth are used for diving, and the side teeth are used to ensure the aperture. When in use, because the force on the side teeth is perpendicular to its length, the side teeth are easy to break under continuous use, causing the drill bit to be scrapped.
Hot spot of the week! What are the major global mining events this week?(5.15-5.21)
2022-05-25
Xinhua News Agency, May 15th, the 10th issue of "Seeking Truth" magazine published an important article by General Secretary Xi Jinping "Correctly Understanding and Grasping Major Theoretical and Practical Issues in my country's Development." The article points out that it is necessary to correctly understand and grasp the supply guarantee of primary products. The first is to enhance domestic resource production and security capabilities. Intensify exploration efforts, implement a new round of prospecting breakthrough strategic actions, and improve the level of development and protection of marine resources and mineral resources. The second is to give full play to the supporting role of state-owned enterprises and speed up the development and application of advanced mining technologies for oil and gas and other resources.
Design Type and Maintenance of DTH Bit
2022-05-11
At present, there are four main end face designs of high wind pressure DTH drills: convex end face, flat end face, concave end face and deep concave center end face. Cemented carbide is mostly made of spherical teeth, elastic teeth or both spherical teeth and elastic teeth.
Popularization of Some Knowledge Points on DTH Drill
2022-05-11
The size of the down-the-hole bit impactor mainly depends on the hole diameter and rock type. For blast holes, the diameter of DTH holes varies from 89mm to 252mm. The hole diameter less than 89mm mainly adopts the top hammer type, more than 252mm multi-purpose rotary excavation method. Generally speaking, the small diameter of a DTH impactor is its nominal size, that is, the small diameter of a 4 inch impactor is 4 inches in diameter. In general, there is sufficient annular space between the impactor and the hole wall and between the drill pipe and the hole wall for slag removal.
Where is the best global mining investment environment?
2022-04-21
According to the Mining.com website, the Fraser Institute of Canada (Fraser Institute) released the latest annual survey report on mining companies, and the resource-rich Western Australia has replaced Nevada as the best destination for the global mining investment environment.
Hot spot of the week! What are the major global mining events this week?(3.27-4.2)
2022-04-04
Xinhua News Agency, March 30, Premier Li Keqiang presided over the State Council executive meeting. The mining sector includes, first, a reasonable expansion of the scope of use of special bonds, focusing on projects in the fields of energy, ecological and environmental protection, transportation, etc., while supporting projects such as public services with certain benefits. The second is to start another batch of water conservancy projects that have been included in the plan and have mature conditions this year, including major water diversion projects such as the follow-up project of the South-to-North Water Diversion, backbone flood control and disaster reduction, danger removal and reinforcement of dangerous reservoirs, and irrigation area construction and renovation. These projects, together with other water conservancy projects, can complete an investment of about 800 billion yuan throughout the year.
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