This is how the drill rod is produced.
2022-05-25
Inspection of hollow steel-blanking according to the length of the drill rod-machining threads at both ends of the rod body (MF drill rod needs to forge female thread ends first)-machining handle groove-
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.
How is the hollow steel used to make the drill rod produced?
2022-05-14
Production of hollow steel for drill rod: electric furnace smelting-LF furnace refining-bloom continuous casting machine casting billet
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.
Pay attention to lotus mountain drilling tools:
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